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Ricoh FW780 Service Manual

Ricoh FW780 Manual

Ricoh FW780 manual table of contents:

  • Ricoh FW780 | Service Manual - Page 1
    A163/A251/A252 B047/B048 SERVICE MANUAL RICOH GROUP COMPANIES 001317MIU
  • Ricoh FW780 | Service Manual - Page 2
  • Ricoh FW780 | Service Manual - Page 3
    ® A163/A251/A252/B047/B048 SERVICE MANUAL RICOH GROUP COMPANIES ®
  • Ricoh FW780 | Service Manual - Page 4
  • Ricoh FW780 | Service Manual - Page 5
    A163 SERVICE MANUAL 001317MIU
  • Ricoh FW780 | Service Manual - Page 6
  • Ricoh FW780 | Service Manual - Page 7
    ... within this document to maintain a level of confidentiality that is in the best interest of Ricoh Corporation and its member companies. NO PART OF ..., domain names or product illustrations, including desktop images, used in this document are trademarks, registered trademarks or the property of their ...
  • Ricoh FW780 | Service Manual - Page 8
  • Ricoh FW780 | Service Manual - Page 9
    ... and spare parts of office equipment distributed by Ricoh Corporation. Users of this manual should be either service trained or certified by successfully completing a Ricoh Technical Training Program. Untrained and uncertified users utilizing information contained in ...
  • Ricoh FW780 | Service Manual - Page 10
  • Ricoh FW780 | Service Manual - Page 11
    LEGEND PRODUCT CODE A163 A251 A252 B047 B048 GESTETNER N/A N/A N/A A040 A041 COMPANY RICOH FW740 FW750 FW760 FW770 FW780 SAVIN N/A N/A N/A 7700W 7800W DOCUMENTATION HISTORY REV. NO. * 1 2 3 4 DATE 5/95 5/96 6/98 8/2001 COMMENTS Original Printing...
  • Ricoh FW780 | Service Manual - Page 12
  • Ricoh FW780 | Service Manual - Page 13
    ...PREVENTION OF PHYSICAL INJURY 1. Before disassembling or assembling parts of the copier and peripherals, make sure ... check has to be made with exterior covers off or open while the main switch is turned ... with the specified ones at the specified intervals. 3. Toner and developer are non-toxic, but if ...
  • Ricoh FW780 | Service Manual - Page 14
    ... SAFETY STANDARDS 1. The copier and its peripherals must be installed and maintained by a customer service representative who ... incinerate the toner cartridge or the used toner. Toner dust may ignite suddenly when exposed to open flame. 2. Dispose of used toner, developer, and organic photoconductors...
  • Ricoh FW780 | Service Manual - Page 15
    ... UNIT VENTILATION ...2-5 3. EXPOSURE ...2-6 3.1 OVERVIEW ...2-6 3.2 PAPER AND ORIGINAL FEED ...2-7 3.2.1 Basic Operation (Manual Feed) ...2-7 3.2.2 Original Jam Check ...Control ...2-12 4. DEVELOPMENT ...2-13 4.1 OVERVIEW ...2-13 4.2 DRIVE MECHANISM ...2-14 4.3 CROSS-MIXING ...2-15 4.4 TONER DENSITY ...
  • Ricoh FW780 | Service Manual - Page 16
    ... End condition ...2-17 4.4.3 Toner Density Sensor ...2-18 4.5 DEVELOPMENT BIAS ...2-19 4.5.1 Basic Concept...2-19 4.5.2 Manual Image Density Bias ...2-19 ......2-24 6.1 OVERVIEW ...2-24 6.2 COLLECTION OF USED TONER ...2-25 7. QUENCHING ...2-26 8. FUSING AND PAPER EXIT...2-27 8.1 ...
  • Ricoh FW780 | Service Manual - Page 17
    ... POWER ON INITIAL SETTING MODE ...4-30 4. JAM CODE LIST ...4-31 4.1 ACCESS PROCEDURE ...4-31 4.2 ...31 5. SPECIAL TOOLS AND LUBRICANTS ...4-33 6. SERVICE REMARKS...4-34 6.1 DRUM UNIT ...4-34 ...34 6.2 CHARGE CORONA ...4-35 6.3 OPTICS ...4-36 6.4 DEVELOPMENT...4-36 6.5 TRANSFER AND SEPARATION ...4-37 6.6...
  • Ricoh FW780 | Service Manual - Page 18
    Rev. 06/2004 6.8 ORIGINAL FEED ...4-39 6.9 PAPER FEED ...4-39 6.10 ROLL FEEDER...4-... SENSOR REPLACEMENT ...5-5 3. DEVELOPMENT ...5-6 3.1 DEVELOPMENT UNIT REMOVAL...5-6 3.2 DEVELOPER REMOVAL ...5-8 3.3 TONER DENSITY SENSOR... for Non-image Area ...5-12 4. DRUM UNIT ...5-13 4.1 DRUM UNIT REMOVAL ...5-13...
  • Ricoh FW780 | Service Manual - Page 19
    ...-OFF PAWL UNIT REMOVAL ...5-18 4.7 GRID VOLTAGE ADJUSTMENT ...5-19 4.8 DRUM CURRENT ADJUSTMENT ...5-20 4.8.1 Charge Current Adjustment ...5-22 ... 8.2 IMAGE BIAS ADJUSTMENT ...5-40 8.3 TONER DENSITY ADJUSTMENT ...5-41 8.4 REGISTRATION ADJUSTMENT ...5-41 TROUBLESHOOTING 1. COPY QUALITY TROUBLESHOOTING ...
  • Ricoh FW780 | Service Manual - Page 20
    ... LINE OR BAND ...6-4 1.5 ENTIRELY BLANK COPY ...6-5 1.6 PAPER CREASING ...6-6 2. SERVICE CALL CONDITION ...6-7 2.1 SC ... E-3: Hot Roller Thermistor Open...6-8 2.4 SC Code E-4: Hot Roller Thermistor Short ...6-8 2.5 SC ... E-8: Fusing Warm-up Error ...6-10 2.9 SC Code E-9: Toner Density Sensor Abnormal ...
  • Ricoh FW780 | Service Manual - Page 21
    ... REMOVAL ...7-16 7.1.1 Front Cover Removal ...7-16 7.1.2 Left and Right Cover ...7-16 7.2 CUTTER UNIT REMOVAL ...7-17 7.3 PAPER FEED ROLLER REPLACEMENT ...7-18 7.4 PAPER ...) ± 5 mm (for 420 to 1189 mm) ...7-20 7.6 ROLL FEED PAPER SKEW ADJUSTMENT ...7-21 SM vii A163
  • Ricoh FW780 | Service Manual - Page 22
  • Ricoh FW780 | Service Manual - Page 23
    OVERALL MACHINE INFORMATION
  • Ricoh FW780 | Service Manual - Page 24
  • Ricoh FW780 | Service Manual - Page 25
    ... Multi-Copy: Automatic Reset: Photoconductor: Drum Charge: Reproduction Ratio: Exposure System: Exposure Lamp: Development: Toner Replenishment: Toner Consumption... dry toner system (Type 410, 2 bags) Cartridge system (750g toner/cartridge) 1,860 A1 or D copies per cartridge (6% ...
  • Ricoh FW780 | Service Manual - Page 26
    ... Fusing: Fusing Lamp: Self-diagnostic Codes: Power Source: Manual feed (roll feeder optional) ... and Machine Configuration Main frame A163 copier Configuration Optional equipment Roll feeder (... Table (A714) --- Other Optional Equipment • Paper Spool • Drum anti-condensation heater Specifications ...
  • Ricoh FW780 | Service Manual - Page 27
    2. PAPER PATH D E A B C A: Original Path B: Paper from the manual feed C: Paper from the roller feed D: Paper exit E: Original Path from Rear Feeder A163 1-3 SM
  • Ricoh FW780 | Service Manual - Page 28
    ... In the dark the charge corona unit applies a negative charge to the drum. The grid plate ensures the charge is applied uniformly. The charge ... from the moving original through the fiber optic array. The charge on the drum surface is dissipated in direct proportion to the intensity of the reflected ...
  • Ricoh FW780 | Service Manual - Page 29
    ... the drum surface, at the exact timing, to align the copy paper and the developed image on the drum surface. Then a strong negative charge is applied to the back side of the paper. The negative charge pulls the toner particles from the drum surface onto the paper. 6. Paper ...
  • Ricoh FW780 | Service Manual - Page 30
    ... Fusing Exit Rollers 6. Hot Roller 7. Pressure Roller 8. Gas Spring 9. OPC Drum 10. T/S Corona Unit 11. Main Drive Unit 12. Table 13. Paper Spool SM 1-6 14. Roll Feeder 15. Paper Registration Rollers 16. Development Unit 17. Toner Cartridge 18. Manual Feed Table 19. Charge ...
  • Ricoh FW780 | Service Manual - Page 31
    ... Feed Roller Pulley 3. Development Unit 4. Development Unit Relay Gear 5. Development Drive Chain 6. Paper Registration Roller Clutch 7. Drum Drive Relay Gear 8. Main ... 12. Fusing Drive Sprocket/Gear 13. Toner Collection Coil Drive Gear 14. Drum Drive Gear 15. Original Feed ...
  • Ricoh FW780 | Service Manual - Page 32
    ... Supply Turns on to supply toner to the development unit. Solenoids Pick-off Pawl Switches... against the drum. 6 Supplies power to the copier. Cuts ac power when the original or paper feed... prohibits the key operation. Detects the density of toner in the developer. Detects when the original lead edge...
  • Ricoh FW780 | Service Manual - Page 33
    ...Provides light to reflect the original's image onto the drum (fluorescent lamp). Provides heat to the fusing ...power for the charge corona, charge grid, and development bias. Provides high voltage power... Anticondensation Keeps moisture from forming inside the copier (option). Others Total Counter Keeps...
  • Ricoh FW780 | Service Manual - Page 34
    SM 1-10 A163
  • Ricoh FW780 | Service Manual - Page 35
    DETAILED SECTION DESCRIPTIONS
  • Ricoh FW780 | Service Manual - Page 36
  • Ricoh FW780 | Service Manual - Page 37
    ...negative electrical charge in the dark. (The electrical resistance of the OPC drum is high in the absence of light.) The electric charge on... photoconductor surface, a smaller voltage remains. • The OPC drum used in this model has high sensitivity, good color reproduction, and good reproduction of...
  • Ricoh FW780 | Service Manual - Page 38
    ... constantly when the main motor [B] is on. When the main motor turns on, the drive is transmitted to the drum in the following way: main motor drive gear [C] ⇒ idle ... is tightened, the right flange presses firmly against the drum so that the drum is held tightly between the flanges. The drum and ...
  • Ricoh FW780 | Service Manual - Page 39
    2. CHARGE 2.1 OVERVIEW [A] [B] Charge Charge/ Grid Power Pack Grid This model uses a single wire corona unit [A] to charge the OPC (organic photoconductor) drum [B]. The corona unit generates a corona of negative ions when a high negative voltage is ...
  • Ricoh FW780 | Service Manual - Page 40
    ...860 volts. This ensures that the charge does not fluctuate and an even charge is applied to the drum surface. The copy grid voltage and charge voltage amounts can be adjusted using SP # --11 and SP #--10 respectively. The grid drive signal applied to CN340...
  • Ricoh FW780 | Service Manual - Page 41
    ... the corona charge stays in the charge corona area, it may cause uneven corona charging to the drum. To prevent this, ozone is vacuumed out through the exhaust fan [A], and changed to oxygen by the ozone filter before being blown out of the copier. A163 2-5 SM
  • Ricoh FW780 | Service Manual - Page 42
    ... [A] reflects off the original and through the fiber optics [B] to the OPC drum [C]. During exposure, the original moves across the exposure glass at the same speed as the drum's peripheral velocity. The platen plate [D] presses the original [E] flat against the ...
  • Ricoh FW780 | Service Manual - Page 43
    ... (Manual Feed) Rev. 5/95 [A] [B] [C] When the entrance sensor [A] of the manual feed table detects the leading edge of the copy paper, the main motor starts rotating and the drum process (exposure lamp, change corona,...etc.) begins. The registration clutch ...
  • Ricoh FW780 | Service Manual - Page 44
    ... turns off. At the appropriate time, the copy paper starts to be fed again. The original passes ...image is reflected through the fiber optics array [G] to the drum as the original passes between the platen plate ... either the original or copy paper exits, the image creation process (drum process) stops....
  • Ricoh FW780 | Service Manual - Page 45
    3.2.2 Original Jam Check Timing [A] There is only one sensor (original registration sensor) in the original path. Therefore, original jam cannot be detected during the time that a maximum original length (2m) passes this sensor. The original jam check is done after the leading edge of the ...
  • Ricoh FW780 | Service Manual - Page 46
    ... are driven through the original feed drive pulley and belt by the main motor as mentioned in the drum drive section. The paper registration rollers [A] are rotated by the main motor [B] through the gears [C] and the paper registration clutch [D]. SM 2-10 A163
  • Ricoh FW780 | Service Manual - Page 47
    ... 15% to 100%. The basic light intensity level is determined by the image density selected at the operation panel (manual ID control). The CPU uses the light sensor to monitor the actual light intensity. The light sensor [C] directly detects the lamp's light ...
  • Ricoh FW780 | Service Manual - Page 48
    ...0.78 0.892 0.899 0.938 1.02 1.24 1.45 Manual ID Level 8 9 10 11 12 13 14 Light Sensor Output [V] 1.53 1.73 1.93 2.13 2.33 2.52 2.72 3.4.1 Manual ID Control The user can select one of 14 ... the light sensor) varies. This is shown in the above table. The development roller bias also varies. (See the ...
  • Ricoh FW780 | Service Manual - Page 49
    ... the developer past the doctor blade [C]. The doctor blade trims the developer to the desired thickness and creates backspill to the cross...developed. Negative bias is applied to the development roller to prevent toner from being attracted to non-image areas on the drum that may have residual negative...
  • Ricoh FW780 | Service Manual - Page 50
    4.2 DRIVE MECHANISM [C] [D] [B] [A] [H] [F] [G] [I] [E] When the main motor [A] is on, the paddle roller [B], development roller [C], and mixing auger [D] in the development unit are driven through the development drive chain [E] and gears [F]. The toner agitator shaft [G] is rotated ...
  • Ricoh FW780 | Service Manual - Page 51
    4.3 CROSS-MIXING [C] [B] [F] [A] [E] [D] "Cross-mixing" keeps the developer's toner and carrier evenly mixed and evenly distributes the ... One part (the magnetic brush) goes on to develop the latent image on the drum. However, the other part is trimmed off by the doctor blade and directed to the ...
  • Ricoh FW780 | Service Manual - Page 52
    ...5: 100% The toner density sensor is used for toner density control. It measures the ratio of toner to carrier in the developer. Toner is ... after 250 copies. To compensate the triboelectric charge characteristic, the value of the toner supply control changes as shown. During the initial conditioning,...
  • Ricoh FW780 | Service Manual - Page 53
    .... 4.4.2 Recovery From Toner (Near) End Condition After replacing the toner cartridge (opening and closing the original feed unit), the main motor rotates the development unit for 1 minute. For 30 seconds during this period, toner is supplied at 100% of the supply ...
  • Ricoh FW780 | Service Manual - Page 54
    ... changes, causing the current through the transformer to change. As the amount of toner in the developer increases, the effect of the carrier particles decreases and ... applied to CN104-A10 decreases. Conversely, when the toner concentration drops as toner is used up, the effect of the carrier on the ...
  • Ricoh FW780 | Service Manual - Page 55
    4.5 DEVELOPMENT BIAS 4.5.1 Basic Concept When the drum is exposed, most of the negative charge is eliminated from the areas where light ... the positively charged toner from being attracted to the background areas of the latent image. Bias (Volts) Manual ID Bias Manual ID Setting 4.5.2 Manual Image...
  • Ricoh FW780 | Service Manual - Page 56
    ... rotates, mylar strips [B] on the ends of the agitator force toner through small holes (0.5 mm in diameter) ... one side of the toner cartridge. The toner particles thus ejected from the cartridge fall into the development ... agitator turns at 75 rpm and the toner supply rate is approximately 22.5 grams ...
  • Ricoh FW780 | Service Manual - Page 57
    ...TRANSFER LAMP (PTL) After the latent image is developed but before the image is transferred to the copy... component holds the toner on the paper to prevent it from scattering the drum during paper separation. The two pick-off pawls [E] ensure that thin paper, paper with low stiffness, or upward curled...
  • Ricoh FW780 | Service Manual - Page 58
    ... is energized after the registration clutch turns on to feed the copy paper to the drum. The pick-off shaft [B] then rotates clockwise and the pick-off pawls [C] touch the drum surface. Just after the leading edge of the copy paper passes the pick-off pawls, the pick-off solenoid turns ...
  • Ricoh FW780 | Service Manual - Page 59
    ...+24 volts supply into the high voltages used by the transfer and separation coronas. The main board... wire. The main board turns on the separation corona using PWM signals (S.AC Drive and S....paper or film) may be wrapped around the drum. This may cause the paper to be jammed or transported incorrectly....
  • Ricoh FW780 | Service Manual - Page 60
    6. CLEANING 6.1 OVERVIEW [A] [C] [B] This copier uses the counter blade system for drum cleaning. The blade [A] is angled against the drum rotation. ... remaining on the drum after the image is transferred to the copy paper. The toner that is wiped off by the cleaning blade drops onto the toner ...
  • Ricoh FW780 | Service Manual - Page 61
    ... copying is disabled. After disposing of the toner in the toner collection bottle and closing the paper path section, pressing of the Clear Modes/Stand by key ...using SP53. SP52 shows the length of copies made since the used toner was emptied. When "0" is input in SP53, the value of SP52 ...
  • Ricoh FW780 | Service Manual - Page 62
    .... 5/95 7. QUENCHING [B] [A] After the drum [A] is cleaned by the cleaning blade, light from the quenching lamp [B] neutralizes any charge remaining on the drum. The quenching lamp turns on and off at the same time as the main motor. The main board turns on the quenching lamp LEDs by dropping ...
  • Ricoh FW780 | Service Manual - Page 63
    ... FUSING AND PAPER EXIT 8.1 OVERVIEW [F] [C] [J] [B] [H] [I] [G] [D] [A] [E] After separation from the drum, copy paper rides on the transport plate [A]. The small separation rollers ... section on fusing temperature control.) The fusing exit sensor [J] is used for jam detection. A163 2-27 SM
  • Ricoh FW780 | Service Manual - Page 64
    8.2 DRIVE MECHANISM 8.2.1 Fusing Unit Drive [I] [J] [A] [J] [B] [G] [C] [H] [D] [F] [E] The hot roller [A] is turned by the hot roller drive gear [B] as shown. The pressure roller [C] is friction driven by the hot roller. The fusing rollers turn constantly when the main motor [D] is on, ...
  • Ricoh FW780 | Service Manual - Page 65
    ... failure of the +24 volt power supply. When +24 volts is applied at CN202-1 and CN106-B15 drops to LOW, RA201 is energized and its ac contacts stay open. If the +24 volts power from CN 106-A2 stops, the ac contacts of RA201 close, stopping the drive circuit and turning off the fusing lamp. A163 2-...
  • Ricoh FW780 | Service Manual - Page 66
    ... the +24 volt supply to ac drive board. The fusing lamp then turns off. The overheat protection circuit becomes effective at about 215°C. TF1 provides overheat protection in case a short bypasses the control and drive circuits. This fuse will open if it reaches approximately 192°C. SM 2-30 A163
  • Ricoh FW780 | Service Manual - Page 67
    8.4 TEMPERATURE CONTROL Hot Roller Temp. (°C) Pressure Roller Temp. ( °C) Operating Temperature Lower Limit Lower Limit The main board monitors the temperature of the hot roller through TH1 and the temperature of the pressure roller through TH2. The CPU determines whether or not to turn ...
  • Ricoh FW780 | Service Manual - Page 68
    ... hot roller temperature reaches the ready temperature, the copier enters the ready condition, and copying is... can be adjusted to match the paper type more exactly, either by a service technician using SP ... Mode. First, select the temperature mode to be adjusted, using the Copy Media key. Then hold the...
  • Ricoh FW780 | Service Manual - Page 69
    ... between 130°C and 145°C. When the hot roller or pressure roller temperature is below the lower limit, copying is disabled. After fusing, paper shrinks slightly, and expands again after a few minutes. The shrinkage and expansion are different at different fusing unit temperatures. Therefore, if ...
  • Ricoh FW780 | Service Manual - Page 70
    ... ENERGY SAVER FUNCTION When the copier is not in use, the energy saver function reduces the power ... is approximately 14%. The waiting time until the copier returns to the ready condition is approximately 60 .... Press the Clear Mode/Standby key. The copier is returned to the ready condition after a warm...
  • Ricoh FW780 | Service Manual - Page 71
    8.6 FUSING ENTRANCE GUIDE HEIGHT [A] Paper creasing may occur depending on the type of paper used. The fusing entrance guide [A] height is changed by adjusting a lever (there are three settings). A163 2-35 SM
  • Ricoh FW780 | Service Manual - Page 72
    ... paper between the slide shafts [A] and cutter guide stay [B], the holders [C] hold the slide shafts ... position by keeping the gap constant. To stop paper dropping from the roll cutting rail, the holders .... The guide shaft [D], made of resin, protects the paper knife blade from damage by metal parts ...
  • Ricoh FW780 | Service Manual - Page 73
    INSTALLATION
  • Ricoh FW780 | Service Manual - Page 74
  • Ricoh FW780 | Service Manual - Page 75
    1. ENVIRONMENT 1. Temperature Range: 2. Humidity Range: 3. Ambient Illumination: 4. Ventilation: 15oC to 30oC (59oF to 86oF) 20% to 80% RH Less than 1,500 Lux (do not expose to direct sunlight). Minimum space 20 m3 Room air should turn over at least 30 m3/hr/person. Less than 0.15 mg/m3 (4 x 10-3 ...
  • Ricoh FW780 | Service Manual - Page 76
    ... 600 mm 1. Front: 2. Back: 3. Right: 4. Left: 1,000 mm (39 in) 600 mm (24 in) 600 mm (24 in) 600 mm (24 in) 1.2 MACHINE LEVEL 1. Front to back: Within 5 mm (0.2") of level 2. Right to left: Within 5 mm (0.2") of level Make sure that the machine is level using a carpenter's level. A163 3-2 SM
  • Ricoh FW780 | Service Manual - Page 77
    1.3 POWER SOURCE 1. Input Voltage Level: 115 V/60 Hz More than 15 A (for U.S.A. version) 220 V/230 V/240 V/50 Hz More than 7 A (for European version) 2. Permissible Voltage Fluctuation: ±10% 3. Do not set anything on the power cord. NOTE: a) Make sure the plug is firmly inserted in the outlet. b)...
  • Ricoh FW780 | Service Manual - Page 78
    1.4 INSTALLATION PROCEDURE Copier Check the accessories and their quantities according to the following list: Guide Wire ...2 pcs Copy Tray ...1 pc Copy Guide ...1 pc A163 3-4 SM
  • Ricoh FW780 | Service Manual - Page 79
    ... [E] [C] [E] [A] 1. Lower the feet [A] so that the table does not move while the copier is being installed on the table. 2. Place the copier [B] on the ... holes [E]). Warning: The copier is not attached to the table. Pushing the copier too hard may cause it to drop onto the floor. While moving the...
  • Ricoh FW780 | Service Manual - Page 80
    ... and remove two strips of shipping tape [B]. 4. Remove the right upper cover [C] (2 screws). 5. Remove the drum protection sheet [D], and remove the screw [E] to apply cleaning blade pressure to the drum. Remove paper from transport section. Close the paper path section. ...
  • Ricoh FW780 | Service Manual - Page 81
    Rev. 5/95 [A] [E] [C] [B] [D] 6. Open the original feed unit [A], manual feed table [B], and toner supply cover [C]. Remove a sheet [D] covering the developer entrance. Pour 1 kg of the developer [E] into the development unit evenly across its width as shown, then close all...
  • Ricoh FW780 | Service Manual - Page 82
    ... necessary to access the SP mode when loading the second Kg of developer (in step 11). Turn off the main switch to stop.../Stop key again for longer than 3 seconds. The wrench and toner end indicators will blink (SP INPUT/OUTPUT mode). 10. Select 23 using the + key [D] and press the RF Select key [E]. ...
  • Ricoh FW780 | Service Manual - Page 83
    .../Stop key again for longer than 3 seconds. The roll paper end and call service indicators will blink (SP mode). 14. Select ...key [E] + key RF Select key [F] Five minutes later, the copier will automatically return to the normal operating mode from SP mode. (New developer initialization) SM 3-9 A163...
  • Ricoh FW780 | Service Manual - Page 84
    [A] [B] [C] 15. Install the toner cartridge [A] as shown. 16. Remove the sealing tape [B] from the cartridge and turn the knob [C] until it stops. A163 3-10 SM
  • Ricoh FW780 | Service Manual - Page 85
    [A] [C] [B] 17. Attach the guide wires [A] to the copy tray [B]. 18. Install the copy tray [B] and copy guide [C]. 19. Reinstall all the covers. 20. Check the copy quality and copier operation. SM 3-11 A163
  • Ricoh FW780 | Service Manual - Page 86
    1.5 INSTALLATION PROCEDURE Table Check the accessories and their quantities according to the following list: Top Plate ...1 Left Side Plate ...1 Right Side Plate ...1 Middle Plate ...1 Rear Cover ...1 Screws with Spring Washer - M4x8 ...14 A163 3-12 SM
  • Ricoh FW780 | Service Manual - Page 87
    ...[C], left [D], and right side plate [E] (6 screws). 2. Turn the table up-side down in the direction of A. 3. Install the middle plate [F] and rear cover [G] (4 screws each). 4. Tighten all the screws until the spring washers [H] of screws are flattened. 5. Flip the table the correct way. SM 3-13 ...
  • Ricoh FW780 | Service Manual - Page 88
    ... accessories and their quantities according to the following list: Cutter Guide ...1 pc Cutter Knife ...1 pc Roll Paper Arm ...2 pcs Roll Paper ... ...2 pcs [A] [B] [A] [B] 1. Remove the small caps [A] from the lower front cover. 2. Attach the roll shaft holders [B] as shown. A163 ...
  • Ricoh FW780 | Service Manual - Page 89
    ... pin [E] in the lower slot of the roll paper arm [F].) 4. Install the cutter guide on the roll shaft holder [G]....paper. 6. Fit the roll flanges [I] onto the roll paper shaft (both ends). 7. Push the roll flanges [I] inside to fix the roll paper position. 8. Set the roll paper shaft on the roll shaft ...
  • Ricoh FW780 | Service Manual - Page 90
  • Ricoh FW780 | Service Manual - Page 91
    SERVICE TABLES
  • Ricoh FW780 | Service Manual - Page 92
  • Ricoh FW780 | Service Manual - Page 93
    ...Alcohol Alcohol Alcohol Alcohol Clean with lens paper if necessary Clean using water if necessary Water or ...glass 4 Reflection plate C. Development 1 Developer C C C C C C C C C C C C 2 Cartridge holder 3 Entrance seal 4 Development filter D. Around drum 1 Corona wires 2 Grid wires 3 Charge...
  • Ricoh FW780 | Service Manual - Page 94
    ... if damaged Empty used toner I 2 Cleaning seal 3 Toner tank I I I I I I I I I I I I I I F. Paper Feed 1 Registration roller 2 Paper feed guide plate 3 Manual feed table G. Fusing 1... using suitable solvent if necessary Clean using alcohol 2 Pressure roller 3 Thermistors 4 Hot roller...
  • Ricoh FW780 | Service Manual - Page 95
    ... 4.3KM 6.4KM 8.6KM (7.2K) (10.8K) (14.4K) ) A1 sideways/D size 10.8KM (18K) Notes Clean using suitable solvent if necessary 8 Exit guide plate Others 1 Chain I 2 Gears I 3 Ozone filter F. Roll Feeder 1 Feed Roller R I R I R I R I R I...
  • Ricoh FW780 | Service Manual - Page 96
    ... Original Feed (every 3.6K) Clean the original table using alcohol. Inspect the 1st and 2nd press rollers... the fiber optics array using lens paper if necessary. 4. Around Drum (every 3.6K) NOTE...corona wires.) 2. Clean the T/S corona end blocks, casing using a dry cloth. 3. Clean the pick-off pawls ...
  • Ricoh FW780 | Service Manual - Page 97
    ...7.2K) Clean the charge corona end blocks and casing. Around Drum (every 18K) Replace the charge corona wires and T/S corona wires.... if it is damaged. Cleaning Unit (every 20K) Replace the cleaning blade. 6. Development Unit (every 3.6K) 1. Clean the cartridge holder using a dry cloth if it is ...
  • Ricoh FW780 | Service Manual - Page 98
    ... using water. 2. Clean the paper feed guide plates using water. 3. Clean the manual table using ... suitable solvent. 2. Clean the hot roller strippers using suitable solvent. Fusing Unit (every 48K...(every 3.6K) 1. Inspect the drive chain. Lubricate using G501 if necessary. 2. Inspect the drive gears...
  • Ricoh FW780 | Service Manual - Page 99
    ...2.1 SERVICE TABLES TEST POINTS Function VAA (+24V) Vcc (+5V) GND Toner density sensor (CN104-A10) Light sensor... changed in the field. Charge corona can be adjusted using SP #--10. T&S Power Pack Number ...not be changed in the field. They can be adjusted using SP #--12 to --17. SM 4-7 A163
  • Ricoh FW780 | Service Manual - Page 100
    ... TOOLS SERVICE PROGRAM MODE The service program (SP) mode is used to check electrical data, change mode or adjustment values. 3.1.1 Service Program Mode Access... the and How to access the SP mode for customers and sales representatives modes 1 to 35 are accessible by a customer with this...
  • Ricoh FW780 | Service Manual - Page 101
    ...the SP mode and select the program number. 2. Press the key to select the paper length indicator (the four digit indicator beside the mark). 3. The present setting is displayed in the paper length indicator. 4. Select the setting using the key to enter the selected setting. 5....
  • Ricoh FW780 | Service Manual - Page 102
    ... Service Program Mode Table 1: A "*" before the mode number means that the mode can be accessed ... the time to when the paper is automatically fed out after it has been set on the manual table... after the entrance sensor 1: 0.7 second detects the paper leading edge. 2: 1 second 3: 3 seconds 4: 4 seconds...
  • Ricoh FW780 | Service Manual - Page 103
    ...(Long → Short) 1: Up (Short → Long) To change the paper length increase/decrease speed, the customer holds... rate of speed increase/decrease. Selects the fixed paper size pattern chosen when the "Preset Cut" ... selected in SP No. 22, this data is used as fixed paper size when the "Preset Cut" key is...
  • Ricoh FW780 | Service Manual - Page 104
    ... adjust the toner sensor output, "E=11" is indicated. 0: Release SC 1: SC condition New Developer ... Used Release Fusing Unit Service Call Not Used Roll Feeder Identification Roll Feeder... returns to its initial (power on) condition. 41 To adjust the paper feed speed of the roll feeder. To adjust the...
  • Ricoh FW780 | Service Manual - Page 105
    ...To adjust the cutting length of 1100 mm in the plain paper mode. Data 0: Standard --50.0←0ମ. adjust the cutting length of 1100 mm in the translucent paper mode. To adjust the cutting length of 1100 mm ... length after clearing the tF=XX,XXX used toner counter. This counter is (Beeper) automatically ...
  • Ricoh FW780 | Service Manual - Page 106
    Mode No. Used Toner Counter Clear 53 54 Developer Warm-up Setting Data .... Determines the warm-up time to increase the 0: 1 minute Q/M of the developer. This warm-up is done 1: 2 minute 2: 3 minute if the ... 80 sheets 9: 90 sheets Function Clear used toner counter. Paper Length Limit Setting 55 ...
  • Ricoh FW780 | Service Manual - Page 107
    ..." key is 1: Special Toner pressed. Toner sensor voltage is displayed Supply Mode on the "Paper Length" indicator...letter Example: vEr_1994_06_06_01 Year Date 63 Not Used SP Mode Display Speed Setting 64 ...Display 65 Indicates the ROM version. Month Internal Use Only RAM Abnormal Condition Check 66...
  • Ricoh FW780 | Service Manual - Page 108
    ... 85 Displays the total length of copied paper after do = XX,XXX the OPC drum is installed. This counter should be cleared when the OPC drum is replaced. (...done. Displays the total length of copied paper [m] dt = XX,XXX after a new toner cartridge is installed. This counter is ...
  • Ricoh FW780 | Service Manual - Page 109
    ...Service Call Records 93 Et = XXX Displays the total number of service calls (SC) by location. SC codes displayed ...SP92: E6, E7, E8 Displays the last five service calls one after E1 = XX (The last error code) the other. ↓ ... error code) ↓ Beeper (XX= Error Code) 94 to 99 Not Used SM 4-17 A163
  • Ricoh FW780 | Service Manual - Page 110
    ... on the decal attached 3: OPC Counter inside the upper right cover. (SP76) Please refer to page 4-26 to know the default 4: Developer settings for each destination.... 10: Not Used * Note: 1 This counter is not used for the toner density step control (described on page 2-16). * Note: ...
  • Ricoh FW780 | Service Manual - Page 111
    ... No. Function Data 11: Change the setting to the U.S.A. version 12: Not Used 13: Not Used ... unit in which the edge margin and 0: mm paper length is indicated by. 1: Inch 0: Standard --9.9 ← 0 → 9.9 mm ...Inch/mm Exchange Not Used Registration Adjustment Adjusts the paper registration. SM 4-19 ...
  • Ricoh FW780 | Service Manual - Page 112
    ... is higher than 180°C), "HHH" is indicated. Determines the drum charge voltage. 200: Standard In this mode, the... Film = OFF 9: Standard 0 ← 9 → 15 Low High Drum Charge Setting --10 Copy Grid Setting ...Low High turned on and off using the Copy Media key. Translucent paper = ON Translucent Film = ...
  • Ricoh FW780 | Service Manual - Page 113
    ...Voltage Setting --16 Separation DC Voltage at the Paper Leading --17 Edge Setting Determines ... for the Image Area Setting --20 Determines the development bias voltage for 3: Standard the image area.... using the Copy Media key. Translucent paper = ON Translucent Film = OFF Determines the development...
  • Ricoh FW780 | Service Manual - Page 114
    ...3.75V 2.50V 2.50V 3.25V 2.00V --22 23 to 24 Not Used Toner Density Sensor Voltage Setting --30 Toner Sensor --31 ...voltage for non-image area can be turned on and off using the Copy Media key. Translucent paper = ON Translucent Film = OFF Displays the toner sensor output voltage for the last copy...
  • Ricoh FW780 | Service Manual - Page 115
    ...stand-by condition or copy cycling (the toner sensor output voltage, paper length and copy ...Normal temperature. This mode cannot be used 1: Forced Ready during the development idling. Condition Fluorescent ... operation without an original. This mode can be used if the optional roll feeder is installed ...
  • Ricoh FW780 | Service Manual - Page 116
    ... 1 manual feed table before the "Set Paper" 1: Manual Feed indicator lights. Attention Mode 1 Manual... "+" margin can be --66 Margin made in the part copy mode Toner Full Supply In the Special Toner ... even if the original trailing edge comes first. Using this mode, several originals can be combined on ...
  • Ricoh FW780 | Service Manual - Page 117
    Fixed Paper Size Pattern Data (SP No.22) In mm Mode 0: 1189, 841, 594, 420, 297 1: 2000, 1189, 841, 594, 420, 297, 245 2: 2000, 1900, 1800, 1700, 1600, 1500, 1400, 1300, 1200, 1100, 1000, 900, 800, 700, 600, 500, 400, 300, 245 3: 2000, 1900, 1800, 1700, 1600, 1500, 1400, 1300, 1200, 1189, 841, 594,...
  • Ricoh FW780 | Service Manual - Page 118
    13: 14: 15: 16: 17: 18: 19: 80.0, 77.5, 75.0, 72.5, 70.0, 67.5, 65.0, 62.5, 60.0, 57.5, 55.0, 52.5, 50.0, 44.0, 34.0, 22.0, 17.0, 11.0, 9.6 80.0, 78.0, 76.0, 74.0, 72.0, 70.0, 68.0, 66.0, 64.0, 62.0, 60.0, 58.0, 56.0, 54.0, 52.0, 50.0, 48.0, 46.0, 44.0, 42.0, 40.0, 38.0, 36.0, 34.0, 32.0, 30.0, ...
  • Ricoh FW780 | Service Manual - Page 119
    3.2 INPUT/OUTPUT CHECK MODE The input check mode allows you to check the current status of electrical components (such as sensors, switches, etc.) from the operation panel. The output check mode allows you to turn the individual electrical components (such as motors, solenoids, etc.) ON/OFF from ...
  • Ricoh FW780 | Service Manual - Page 120
    ... TABLE The on/off status of the selected electrical component is displayed on the paper length indicator ("ON" or "OFF" is displayed.). If a program number not used is selected, "NOT...12 Right Cutter Switch --13 Left Cutter Switch --14 Paper End Sensor A163 4-28 SM
  • Ricoh FW780 | Service Manual - Page 121
    ... Component key again. Main Motor Toner Supply Clutch Pick off solenoid ...Corona Grid Voltage Transfer Charge Corona Not Used Separation Charge Corona Not Used Bias Voltage for the Image Area Bias Voltage for the Non-image Area Main... + Quenching Lamp 24 to 25 Not Used 26 Roll Feeder Dehumidity Heaters...
  • Ricoh FW780 | Service Manual - Page 122
    ...: 1. Turn on the main switch while holding the Emergencey stop key down and indicators blink). 2. Input the operation panel setting that the customer requires (paper size, image density, etc.). 3. Turn off the main switch. The setting, just before the main switch is turned off, is memorized as the ...
  • Ricoh FW780 | Service Manual - Page 123
    ... When a document (original) jam or paper jam occurs, the cause of the jam is displayed by using the following jam code. 4.1 ACCESS PROCEDURE 1. When a document jam or paper... feeder. Registration sensor OFF check at the paper leading SP82 edge. (Manual Feed and Registration sensor ON ...
  • Ricoh FW780 | Service Manual - Page 124
    Code PJ90 PJ98 PJ99 Cause of Jam SP Mode No. Roll feeder. SP80 motor does not turn off after paper is fed 500 mm more (Others) than the... sensor does not turn off after paper is fed 2500 mm. Original registration sensor does not turn off after paper is fed 2500 mm. NOTE: To display total jam...
  • Ricoh FW780 | Service Manual - Page 125
    ... Test Lead Accessory Kit Grease -- Mobil Temp.78 Grease-G501 Current Measuring Drum Test Chart OS-A1 (2 sheets/set) Spring Hook Setting Powder PART NO. 54209507 54209508 54479078 52039501 A0239520 A0239504 54199653 54429101 REMARKS BECKMAN RMS3030 BECKMAN ...
  • Ricoh FW780 | Service Manual - Page 126
    ... SERVICE REMARKS DRUM UNIT 6.1.1 Drum The organic photoconductor drum is comparatively more sensitive ... in the protective sheet when inserting or pulling the drum unit out of the copier to avoid exposing it to bright ... a sheet of paper under the drum to catch any falling toner. 10. Dispose of used ...
  • Ricoh FW780 | Service Manual - Page 127
    15. When the drum unit is removed from the copier, do not close the paper path section if ...the paper path section is released. If you close the paper path section, take care not to ...a dry cloth, make sure that the wire does not become stretched. Do not use sand paper or a solvent. 2. Do not touch the ...
  • Ricoh FW780 | Service Manual - Page 128
    ... development roller. 2. Clean the drive gears after removing used developer. 3. Initial conditioning (SP#36) is...section deform the copier machine, which may cause paper jam and copy image problem. .... If these conditions happen, do the developer initialization again, the toner density sensor cannot be ...
  • Ricoh FW780 | Service Manual - Page 129
    ... the cleaning blade, release the pressure several times manually, and then hold down the cleaning blade ... bottle every service call and clear the memory counter SP#52 for used toner overflow ... opening and closing the paper path section. Instruct customers to deal with the toner collection bottle if ...
  • Ricoh FW780 | Service Manual - Page 130
    ...value) is indicated. 4. Make a copy using a less fusible kind of paper like film, translucent ... than the proper setting for the particular kind of paper. For example, if the proper setting is Mode ... regarding the proper settings for particular types of paper and the adjustment procedure for non-listed...
  • Ricoh FW780 | Service Manual - Page 131
    ... black areas on the copy using a cotton cloth approximately 5 times. 6. Check whether the toner is peeled off ... water or alcohol. 6.9 PAPER FEED Service Tables A163 1. Do not touch the manual feed ... crease. It should be replaced. 6.10 ROLL FEEDER 1. The copier is not attached to the table and roll ...
  • Ricoh FW780 | Service Manual - Page 132
  • Ricoh FW780 | Service Manual - Page 133
    REPLACEMENT AND ADJUSTMENT
  • Ricoh FW780 | Service Manual - Page 134
  • Ricoh FW780 | Service Manual - Page 135
    ... Middle, and Right Lower Rear Covers 1. Open the paper path section. 2. Remove the right lower cover [E] (2 screws), right lower middle cover [F], and toner collection bottle [G]. 3. Remove the right lower... cover, push in the rear cover hooking portion [J] over the copier bottom plate as shown. SM ...
  • Ricoh FW780 | Service Manual - Page 136
    ... 2.1 ORIGINAL FEED UNIT REMOVAL 1. Remove the left and right upper covers. 2. Remove the copy tray [A]. 3. Push the projections [B] into the holes [C] ... original feed unit as shown and remove the operation panel [D] (2 connectors). 4. Open the original feed unit [E] and unhook the stoppers [F] at ...
  • Ricoh FW780 | Service Manual - Page 137
    ... 2. Remove the exposure glass bracket [A] (2 screws). 3. Remove the rear original guide plate [B] (2 screws). 4. Remove the exposure glass [C] by sliding it .... NOTE: Make sure that the exposure glass is under the rear original guide plate when reassembling. 2.3 EXPOSURE LAMP REMOVAL 1. Remove the ...
  • Ricoh FW780 | Service Manual - Page 138
    2.4 FIBER OPTICS ARRAY REMOVAL [C] [B] [D] [A] 1. Follow the steps from 1 to 3 of the exposure lamp removal. 2. Remove the original registration sensor bracket [A] (1 screw). 3. Lift up the fiber optics array [B] and remove it from the left side by sliding it out to the right side as shown. ...
  • Ricoh FW780 | Service Manual - Page 139
    2.5 LIGHT SENSOR REPLACEMENT Rev. 5/95 [A] 1. Remove the exposure lamp. 2. Replace the light sensor [A] (1 screw, 1 connector). 3. Perform light sensor adjustment. See page 5-39 SM 5-5 A163
  • Ricoh FW780 | Service Manual - Page 140
    ... [A] [C] 1. Remove the left and right upper cover. 2. Open the paper path section and original feed unit. 3. Remove the toner supply cover [A]. 4. Remove the manual entrance feed cover [B] (2 pins). 5. Remove the paper feed driven unit [C] (2 screws and 1 ...
  • Ricoh FW780 | Service Manual - Page 141
    ...[D] [F] [G] [F] 6. Remove the 4 shoulder screws [A] and 2 screws [B] fixing the development unit. 7. Disconnect the 14p connector [C] and remove it out of the...unit [E]. CAUTION: Do not loosen the painted screws [F] which determine the development doctor blade height and do not push the doctor blade...
  • Ricoh FW780 | Service Manual - Page 142
    ...NOTE: Be careful not to bend the bias terminal. 1. Remove the development unit and place it on a large sheet of paper [A] as shown. 2. Remove the toner supply unit ...of the developer has been dumped out. 6. Clean the development unit prior to reassembling. Especially, clean the right ...
  • Ricoh FW780 | Service Manual - Page 143
    3.3 TONER DENSITY SENSOR REPLACEMENT [C] [E] [D] [B] [A] 1. Remove the development unit. 2. Disconnect the harness connector [A] and take the harness from the 2 clamps [B]. 3. Remove the 2 screws [C] of the toner density sensor holder. 4. Pull out the harness from the ...
  • Ricoh FW780 | Service Manual - Page 144
    3.4 PTL REPLACEMENT [B] [A] 1. Remove the paper feed driven unit (follow the steps from 1 to 5 of the development unit removal). 2. Remove the PTL assembly [A] (4 screws, 3 connectors, and 4 clamps [B]). A163 5-10 SM
  • Ricoh FW780 | Service Manual - Page 145
    3.5 DEVELOPMENT BIAS VOLTAGE ADJUSTMENT NOTE: This adjustment is required when the charge/bias/grid power pack ... off the main switch, and remove the rear cover. 2. Connect the ground terminal of the multimeter to the machine ..., press the key. key and then change the voltage using and SM 5-11 A163
  • Ricoh FW780 | Service Manual - Page 146
    ...± 10V 1. Access SP mode and select No. --21. 2. Press the key to turn on the bias voltage. 3. Check the multimeter. If the voltage is not that of the standard voltage, press the keys. 4. If the voltage is within the standard, press the key. key and then change the voltage using and A163 5-12 SM
  • Ricoh FW780 | Service Manual - Page 147
    ... belt [B] and disconnect the harness connector [C]. 4. Remove the drum unit [D]. 5. Place the drum unit on the flat floor. NOTE: (1) ... reinstalling the drum unit, hook the drum unit guides [E] on the pins [F] of the copier side plates. (2) Hold both ends of the drum unit to carry it. SM 5-13 A163
  • Ricoh FW780 | Service Manual - Page 148
    ... 2 bearing holders [B] (2 screws each). NOTE: Be careful not to scratch the drum with the pick-off pawls when removing or reinstalling the drum. 4. Remove the...new one. NOTE: when reinstalling the gear [F], make sure that the direction of the projection of the gear is on the drum side. A163 5-14 SM
  • Ricoh FW780 | Service Manual - Page 149
    Rev. 5/95 4.3 CLEANING BLADE REPLACEMENT [E [A] [B] [D] [C] [F] 1. Remove the drum unit. 2. Remove the charge corona unit (Pg 5-16) 3 Remove... installing or replacing the cleaning blade, release the pressure [E] several times manually, and then hold down the cleaning blade gently along its entire...
  • Ricoh FW780 | Service Manual - Page 150
    4.4 CHARGE CORONA UNIT REMOVAL [A] [A] [B] 1. Remove the drum unit. 2. Remove the ground springs [A]. 3. Remove the charge corona unit [B] (2 connectors). NOTE: When reinstalling the charge corona unit, make sure that the 2 connectors (C for the charge corona, G for the grid bias) are set ...
  • Ricoh FW780 | Service Manual - Page 151
    ... your hands may cause uneven charge on the drum. (3) Do not expand and bend the ... rough material (sand paper,...etc.) as this will damage the corona wire. (5) Do not use any solvent to clean the wire as this will cause uneven charge on the drum. (6) Make sure that the wire junction [E] is positioned ...
  • Ricoh FW780 | Service Manual - Page 152
    4.6 PICK-OFF PAWL UNIT REMOVAL [A] [B] 1. Remove the drum unit and place it as shown. 2. Remove the pressure spring [A] and pick-off pawl unit [B] (2 screws ...: When installing and/or removing the pick-off pawl unit, do not press too strongly. Otherwise, the drum unit may deform. A163 5-18 SM
  • Ricoh FW780 | Service Manual - Page 153
    ...pack is replaced. 1. Turn off the main switch and remove the rear cover. 2. Connect the ground terminal of the multimeter to the machine ground, and connect the voltage ...to turn on the grid voltage. key and then change the voltage using and 7. Check the multimeter. If the voltage is not that of the ...
  • Ricoh FW780 | Service Manual - Page 154
    ... currents because they have already been adjusted for a wide range of environments at the factory. b) Drum current adjustment is necessary whenever the power ... replaced: adjustment may also be necessary to correct problems with paper separation, incomplete toner transfer, or image density. c) Make ...
  • Ricoh FW780 | Service Manual - Page 155
    4. Install the drum unit [B] on the machine. [B] CAUTION: Be careful not to turn on the main motor. If the main motor accidentally turns on, some parts around the drum may be damaged. SM 5-21 A163
  • Ricoh FW780 | Service Manual - Page 156
    ... corona terminal becomes --5kV. 1. Connect all the terminals of the current measurement drum to the machine ground. 2. Disconnect the charge corona terminal of the charge/...of the standard voltage, press the key and then change the voltage using keys so that the charge current is dc --1000 ± 20 µA. ...
  • Ricoh FW780 | Service Manual - Page 157
    ... so that the transfer current is dc 6. Check the multimeter. Press the voltage using --100 ± 5 µA. and 7. If the voltage is within that of the standard ... and then change the key. 10. Check the multimeter. Press the voltage using --150 ± 5 µA. and keys so that the transfer current is dc 11. ...
  • Ricoh FW780 | Service Manual - Page 158
    ... ADJUSTMENT STANDARD: ac 250 ± 10 µA (Normal Paper) ac 350 ± 10 µA (Film and leading ...and then change the current 6. Check the multimeter. Press the using ± 10 µA. and keys so that the ac separation ... corona. key. 10. Check the multimeter. Press the using ± 10 µA. and key and then change...
  • Ricoh FW780 | Service Manual - Page 159
    ... turn on the separation corona. Rev. 5/95 15. Check the multimeter. Press the using ± 2.5 µA. and key and then change the current keys so that the ... to turn on the separation corona. key. 19. Check the multimeter. Press the using ± 2.5 µA. and key and then change the current keys so that ...
  • Ricoh FW780 | Service Manual - Page 160
    5. 5.1 FUSING FUSING UNIT REMOVAL [H] [H] [I] [E] [B] [F] [C] [D] [A] [F] [B] 1. Remove the copier rear cover. [G] 2. Open the exit cover [A] and remove the shoulder screws [B] at ... the right hinge [F] between the two pulleys [G] and raise the left hinge [H] using tape [I]. A163 5-26 SM
  • Ricoh FW780 | Service Manual - Page 161
    ... 8. While pressing down the fusing pressure release bar [D], pull out the fusing unit. NOTE: While pressing down the fusing pressure release bar [D], set the fusing unit on the guides [E] and align the cuts [F] to the side plates [G] at both ends when reinstalling the fusing unit. SM 5-27 A163
  • Ricoh FW780 | Service Manual - Page 162
    Rev. 5/95 5.2 HOT ROLLER REPLACEMENT [B] [F] [B] [C] [D] [C] [E] [G] [J] [K] [I] [A] [G] [A] [J] [I] [H] NOTE: Be careful not to damage the hot roller thermistor when removing and reinstalling the hot roller. 1. Remove the fusing unit. 2. Remove the pressure springs [A]. 3. Remove the ...
  • Ricoh FW780 | Service Manual - Page 163
    ... roller. 1. Remove the hot roller. 2. Push the projection [C] of the fusing entrance guide stopper and remove the fusing entrance guide [D]. 3. Remove the pressure roller stripper unit [E] (4 screws). 4. Lift up the pressure roller (access the pressure roller ...
  • Ricoh FW780 | Service Manual - Page 164
    [A] [B] [C] 5.4 PRESSURE ROLLER THERMISTOR REPLACEMENT 1. Follow step 1 to 5 of the fusing unit removal. 2. Remove the pressure roller thermistor [A] (1 screw). 5.5 PRESSURE ROLLER STRIPPER UNIT REPLACEMENT 1. Follow step 1 to 5 of the fusing unit removal. 2. Remove the pressure roller ...
  • Ricoh FW780 | Service Manual - Page 165
    [A] [E] [D] [E] [E] [G] [C] [B] [A] [F] [G] 5.7 HOT ROLLER THERMISTOR REPLACEMENT 1. Remove the fusing unit. 2. Remove the 4 screws [A] of the fusing stay. 3. Disconnect the thermofuse connector [B] from the fusing lamp harness [C]. 4. Remove the hot roller thermistor [D] (1 screw and 1 spring,...
  • Ricoh FW780 | Service Manual - Page 166
    ... Turn off the main switch. 2. Remove the copier rear cover. 3. Remove the pressure roller thermistor screw... and wait for longer than 10 minutes. 6. Using a digital thermometer and probe [B], measure the...find out the current mode), adjust the temperature using SP#-7. 8. Repeat steps 5 to 7 and confirm ...
  • Ricoh FW780 | Service Manual - Page 167
    6. 6.1 T & S CORONA UNIT T & S CORONA UNIT REMOVAL [A] [B] [C] [C] [D] 1. Open the paper path section [A] and take out the T & S ... T & S corona unit is set correctly by pressing it down when reinstalling. 2) Remove the connector cover [D] (1screw) for connecting the 2 connectors. SM 5-33 A163
  • Ricoh FW780 | Service Manual - Page 168
    ...material (sand paper, etc.) as this will damage the corona wire. (4) Do not use any solvent to clean the wire as this will cause uneven charging of the drum. 6.2.1 Preparation 1. Remove the T & S corona unit. 2. Remove the paper guides [A] and endblock covers [B]. A163 5-34 ...
  • Ricoh FW780 | Service Manual - Page 169
    6.2.2 Separation Corona Wire Replacement 1. Remove the separation corona wire [C]. 2. Hook the new separation corona wire on the terminal [D] of the right endblock. NOTE: Make sure that the wire junction [E] is positioned inside the right endblock. 3. Hook the other side of the separation corona ...
  • Ricoh FW780 | Service Manual - Page 170
    ... not to damage the mylars [A] on the rear feed table. 1. Open the fusing exit cover [B] and exit unit [C]. 2. Remove the copy tray [D]. 3. Remove the rear feed table ...Unhook the blower duct [F] and remove. 5. Unhook the fan support plate [G] and remove. 6. Replace the ozone filter [H]. ...
  • Ricoh FW780 | Service Manual - Page 171
    7.2 ANTICONDENSATION HEATER INSTALLATION [C] [A] [B] [C] 1. Remove the rear cover of the machine (2 screws). 2. Remove the T&S corona unit. 3. Install the anticondensation heater [A] (3 screws). 4. Put the harness of the heater into the cutout [B] of the frame. 5. Connect the connector of the ...
  • Ricoh FW780 | Service Manual - Page 172
    ... by the following factors: (1) Light Intensity (2) Bias Voltage (3) Toner Density (4) Grid Voltage (5) Charge Corona Current The items... Any adjustment out of the adjustment standards will result in over toning, toner scattering, dirty background, or light image density problems. The grid voltage and ...
  • Ricoh FW780 | Service Manual - Page 173
    ... Call When: 2. When replacing the following part • Exposure lamp • Light sensor • Drum Purpose: Adjustment ... off the main switch. 2. Clean the following parts: Item No. (1) (2) (3) Section Optics (Exposure ... 3. Remove the middle right cover. 4. Make several copies at manual image density level ...
  • Ricoh FW780 | Service Manual - Page 174
    ... in black solid areas is acceptable. When: 2. Dirty background, where the problem is not caused by excess toner and cannot be solved by adjusting the light sensor voltage. To improve the copy image. SP #-20 Change the development bias voltage for image density control by SP #-20....
  • Ricoh FW780 | Service Manual - Page 175
    ... overall image density of the copies. To change toner concentration inside development unit. SP #-22 Change ... start timing by SP #-5. 1. Make several copies by using the manual feed or roll feeder and check the registration. 2. Adjust the registration using SP #-5 if the registration is not within ...
  • Ricoh FW780 | Service Manual - Page 176
  • Ricoh FW780 | Service Manual - Page 177
    TROUBLESHOOTING
  • Ricoh FW780 | Service Manual - Page 178
  • Ricoh FW780 | Service Manual - Page 179
    1. COPY QUALITY TROUBLESHOOTING 1.1 LOW IMAGE DENSITY Is the used paper moist or extremely dry? No Yes Replace the paper. Is the toner ... level (level 0) ? (Refer to Page 2-16.) Yes No Is there sufficient toner in the cartridge? Yes No Replace the toner cartridge. Is the...
  • Ricoh FW780 | Service Manual - Page 180
    1.2 UNEVEN COPY IMAGE Make a solid black copy using SP# --51. Is the image density even? Yes No Is the developer level in the development unit? ... set on the slots of the end blocks. Clean the optics. If the problem is not fixed, replace the exposure lamp. A163 6-2 SM
  • Ricoh FW780 | Service Manual - Page 181
    ... good Change the light sensor setting to a lighter position using SP# --6. No good Is the bias voltage correct? ... lower than the threshold between level 0 and 1? (Check using SP#--32 referring to Page 2-16.) No Yes Check the main board and toner supply clutch. Is the image density of solid areas high...
  • Ricoh FW780 | Service Manual - Page 182
    ... and on . If the problem is not fixed, check the T& S corona leakage.*NOTE Check the part of the following ... array, exposure glass) • Cleaning blade • Development unit • Drum NOTE: If the separation corona ... not turn on, a black band appears 250 mm from the paper leading edge. A163 6-4 SM
  • Ricoh FW780 | Service Manual - Page 183
    1.5 ENTIRELY BLANK COPY Is the used paper moist? No Yes Replace the paper. Are the terminals of the charge corona unit ... leakage occur in the T & S endblocks? No Yes Replace the defective parts. Are the development drive gears broken? No Yes Replace the broken gears. Check the drum drive mechanism....
  • Ricoh FW780 | Service Manual - Page 184
    1.6 PAPER CREASING Is the used paper moist? No Yes Change the paper. Is the paper feed direction the same as the paper fiber direction? No Yes Change the paper transport direction, if possible.(NOTE 1.) Decrease the fusing temperature using SP mode #1 to #3. (NOTE 2.) NOTE: 1. If there is rib ...
  • Ricoh FW780 | Service Manual - Page 185
    ... on. Accessing SP38 and changing the date from "1" to "0" must be done to clear these service call conditions. 2.1 SC Code E-1: Exposure Lamp Abnormal -DefinitionThe light ... and CN104-B1, -B2, -A29 -A30) 2.2 SC Code E-2: Fusing Thermofuse Open -DefinitionThe temperature detected by the ...
  • Ricoh FW780 | Service Manual - Page 186
    ... Main board (CN106-A2, -A5, -B11, -B14, -B15) 2.4 SC Code E-4: Hot Roller Thermistor Short -DefinitionThe resistance of the the hot...-A2, -A5, -B11, -B14, -B15) 2.5 SC Code E-5: Pressure Roller Thermistor Open -DefinitionThe resistance of the pressure roller thermistor is more than 0.53 MΩ.
  • Ricoh FW780 | Service Manual - Page 187
    2.6 SC Code E-6: Pressure Roller Thermistor Short -DefinitionThe resistance of the pressure roller thermistor is less than 0.55 KΩ.
  • Ricoh FW780 | Service Manual - Page 188
    2.8 SC Code E-8: Fusing Warm-up Error -DefinitionThe temperature detected by the hot roller thermistor does not reach the target ready temperature ... (CN106-A2, -A5, -B11, -B14, -B15) AC harness 2.9 SC Code E-9: Toner Density Sensor Abnormal -DefinitionThe toner density sensor voltage is ...
  • Ricoh FW780 | Service Manual - Page 189
    ... Main board (CN106-A12, -A13) 2.11 SC Code E-11: Toner Density Sensor adjustment Error -DefinitionThe toner density sensor voltage ...: If clearing the SC condition, the previous data of SP#-30 is still used until its next initialization. Toner density sensor Developer Flow of the ...
  • Ricoh FW780 | Service Manual - Page 190
    ... 6.3A 250V 6.3A Symptom No power. No indication. Beeper sounds. E=10 is indicated. Not used. USA version Fuse No. FU1 FU2 FU3 FU4 Specification 125V 8A 250V 5A ... 5A 250V 5A Symptom No power. No indication. Beeper sounds. E=10 is indicated. Not used. FU5 125V 1A Counter No symptoms A163 6-12 SM
  • Ricoh FW780 | Service Manual - Page 191
    ROLL FEEDER
  • Ricoh FW780 | Service Manual - Page 192
  • Ricoh FW780 | Service Manual - Page 193
    1. SPECIFICATIONS Roll Paper Size: Width: 210 mm to 914 mm, 81/2" to 36" Length: 150 ...mm/s 1 to 99 Microprocessor +24 volts and +5 volts from the copier Maximum 110 W 1,080 mm x 475 mm x 295 mm... 29 kg, 63.8 lb Cut Size: Cutting Time: Paper Transport Velocity: Repeat Quantity: Control: Power Source: ...
  • Ricoh FW780 | Service Manual - Page 194
    2. MECHANICAL COMPONENT AND DRIVE LAYOUT 4 3 2 1 5 7 6 8 5 6 7 1. Paper Feed Motor 2. Idle Pulley 3. Timing Belt 4. Cutter Motor 5. Paper Feed Rollers 6. Paper Roll Spool 7. Paper Roll 8. Cutter Unit A163 7-2 SM
  • Ricoh FW780 | Service Manual - Page 195
    ...Motor). Index No. 32 39 Indicates "Door Open" on the operation panel and disables the key operation. ... right home position. 38 40 33 Sensors Paper End Leading Edge Humidity Detects when the... Controls all roll cutter unit functions in accordance with copier CPU. Others Upper RF Antihumidity Heater ...
  • Ricoh FW780 | Service Manual - Page 196
    A163 7-4 SM
  • Ricoh FW780 | Service Manual - Page 197
    ...[C] to the paper leading edge sensor [D] according to the signal from the copier. When the paper feed motor starts, the copier CPU starts measuring the length of the paper. (The paper length is measured by counting the number of steps as the paper feed motor [stepper motor] turns.) SM 7-5 A163
  • Ricoh FW780 | Service Manual - Page 198
    ... reaches the exit rollers [A], the paper is directed to the copier registration roller [B]. The registration roller stops ... by the original, the registration roller and roll paper feed motor start to rotate. The copy ... 410 mm, the roll cutter unit cuts the paper after the second rotation of the roll ...
  • Ricoh FW780 | Service Manual - Page 199
    4.2 CUTTER UNIT OPENING AND CLOSING MECHANISM [B] [A] [D] [C] The gear [A] from the paper feed motor disengages from the cutter unit gears [B] when the roll cutter unit is ... and the wheel [D] on the right side can be rotated manually to position the leading edge of the roll paper. SM 7-7 A163
  • Ricoh FW780 | Service Manual - Page 200
    4.3 CUTTER OPERATION [C] [B] [C] [A] The cutter unit uses a sliding rotary cutting blade [A] which is pulled past a fixed blade by a drive wire. The rotary cutting blade allows the cutter unit to cut paper in both directions. There are home position switches [B] at both ends of the ...
  • Ricoh FW780 | Service Manual - Page 201
    5. SERVICE TABLES 5.1 TEST POINTS Function GND VA (24 V) VC (5 V) TP No. TP903 TP901 TP902 5.2 BLOWN FUSE CONDITION Component F901 (250V/1.0A) Unit RF Main board Symptom The AC line for the R/F antihumidity heaters is cut. The heaters are not turned on. SM 7-9 A163
  • Ricoh FW780 | Service Manual - Page 202
    ...PROCEDURE Roll Feeder (A571) CAUTION: Unplug the copier power cord before starting the following ... quantities according to the following list: Harness Cover ...2 pcs Angle Bracket ...1 pc Spacer... ...2 pcs NOTE: When the Roll Feeder is installed on the copier, the table (A714) is required. A163 7-10...
  • Ricoh FW780 | Service Manual - Page 203
    ...while the roll feeder is being installed on the table and the copier. NOTE: Do not place the roll ... roughly, to prevent the left and right covers from being damaged. 2. Remove the shipping tapes [C] and ... cushions [D]. 3. Remove the left and right covers [E and F] (3 screws each). 4. Remove the front ...
  • Ricoh FW780 | Service Manual - Page 204
    ... 5. Open the copier paper path section and remove the copier left lower cover [A] ...), lower right front cover [B] (2 screws), lower right middle cover [C], toner collection bottle [D], ... cover [E] (2 screws). 6. Remove the small caps [F] from the copier rear cover using cutting pliers. 7. Remove the ...
  • Ricoh FW780 | Service Manual - Page 205
    [A] [D] [C] [B] NOTE: Take care not to drop the manual feed table when removing the bracket [A]. 8. Remove the lower front cover [B] (2 screws), reinforcement plate [C] (1 screw), bracket [A] (4 screws) (which is changed by the harness), and the manual feed table [D]. [C] SM 7-13 A163
  • Ricoh FW780 | Service Manual - Page 206
    [A] [B] [D] [E] [F] 9. Mount the roll feeder unit on the copier (hook the mounting arms [A] on both sides into the mounting rail [B]). NOTE: Lift the unit by holding the plate [C] just under the size marks. 10. Install the angle bracket [D] and spacer [E] (4 screws). 11. Install the small cap [F]...
  • Ricoh FW780 | Service Manual - Page 207
    ... feeder heater harness [D] through the holes in the table rear cover (right [E] and left [F]) 14. Connect the roll feeder harness to the copier main board {2 connectors [G] and 1 grounding wire [H]...Manual Feed Table 18. Reattach all the covers and manual feed table excluding the roll feeder ...
  • Ricoh FW780 | Service Manual - Page 208
    ... Clear/Stop key again and hold it down for longer than 3 seconds. The roll paper end and call service indicators will blink (SP mode). 21. Select 40 using the + and - keys. Enter "1" by pressing the following keys. Function Select key [E] + key RF Select...
  • Ricoh FW780 | Service Manual - Page 209
    ... (2 screws). NOTE: If the screw holes for the front cover become worn by the screws, extra holes are ... the original screw holes. 7.1.2 Left and Right Cover NOTE: Be careful not to drop and damage ... screws each). NOTE: When reattaching the left and/or right covers, unlock and lift the cutter unit for ...
  • Ricoh FW780 | Service Manual - Page 210
    ... REMOVAL [C] [D] [A] [B] [A] 1. Remove the roll feeder left and right covers. 2. Remove the 4 screws [A] of the cutter unit. 3. Take out the cutter unit [B] (1 connector [C]). NOTE: When reinstalling the cutter unit, attach the cutter unit cover [D] with the cutter unit. A163 7-18 SM
  • Ricoh FW780 | Service Manual - Page 211
    ...[F] 1. Remove the cutter unit. 2. Unlock and lift the paper feed roller unit [A] using the release lever [B]. 3. Remove the release lock lever [B] (2 screws). 4. Remove the feed roller guide plate [C] (6 screws). 5. Replace the paper feed roller [D] (2 allen screws [E], 1 gear ...
  • Ricoh FW780 | Service Manual - Page 212
    7.4 PAPER FEED MOTOR TIMING BELT TENSION ADJUSTMENT [A] [B] If the timing belt tension for the paper feed motor is not correct, the paper cut length varies for each copy paper. Readjust the timing belt tension for the paper feed if this occurs. 1. Remove the small cap [A] (2 screws). 2. ...
  • Ricoh FW780 | Service Manual - Page 213
    ...roll feeder is installed to correct cutting errors. The cut error correction data is determined in the factory ... varies depending on the copier on which it is installed and/or paper type used. If required... copying because the fusing unit dries the paper and reduces its length temporarily. 7.5.1 Preset...
  • Ricoh FW780 | Service Manual - Page 214
    ... ROLL FEED PAPER SKEW ADJUSTMENT [B] [A] [C] [E] [E] [D] 1. Mark a line [A] on the exposure glass [B]. 2. Make 594 x...roll feeder unit. NOTE: 594 mm wide paper is easier to adjust than 841 ... [C] and [D]. 4. Loosen the 2 screws [E] which determine the paper spool height. 5. If C > D, lower the right ...
  • Ricoh FW780 | Service Manual - Page 215
    ...Manual The A251/A252 machines are based on the A163 copier. Only the differences from the base copier are described in the following pages. Therefore, this documentation should be treated as an insert version of the base copier's service manual. It should always be utilized together with the base...
  • Ricoh FW780 | Service Manual - Page 216
  • Ricoh FW780 | Service Manual - Page 217
    ... FEED (A252 ONLY) ...2-2 2.4 DEVELOPMENT...2-4 2.4.2 TONER DENSITY CONTROL...2-4 2.8 FUSING AND PAPER EXIT ...2-5 2.8.1 OVERVIEW (A252 COPIER) ...2-5 3. ... 4.4 JAM CODE LIST...4-11 4.4.2 JAM CODE TABLE...4-11 4.6 SERVICE REMARKS ...4-15 4.6.12 AC DRIVE BOARD...4-15 5. REPLACEMENT AND ADJUSTMENT ...
  • Ricoh FW780 | Service Manual - Page 218
    ... ADJUSTMENT ...5-11 5.8.4 REGISTRATION ADJUSTMENT ...5-11 6. TROUBLESHOOTING...6-1 6.2 SERVICE CALL CONDITIION...6-1 6.2.12 SC CODE E-14: ZERO CROSS SIGNAL DETECTION ABNORMAL ...6-1 6.2.13 SC CODE E-15: MAIN SWITCH ABNORMAL (U.S.A. VERSION ONLY) ...6-1 6.3 ...
  • Ricoh FW780 | Service Manual - Page 219
    ... with the specified ones at the specified intervals. 3. Toner and developer are non-toxic, but if ... STANDARDS 1. The copier and its peripherals must be installed and maintained by a customer service representative .... Do not recharge or burn this battery. Used RAM packs must be handled in accordance ...
  • Ricoh FW780 | Service Manual - Page 220
    ... NOTES FOR DISPOSAL 1. Do not incinerate the toner cartridge or the used toner. Toner dust may ignite suddenly when exposed to open flame. 2. Dispose of used toner, developer, and organic photoconductors according to local regulations. (These are non-toxic supplies.)...
  • Ricoh FW780 | Service Manual - Page 221
    ... MACHINE INFORMATION TAB POSITION 8 TAB POSITION 7 TAB POSITION 6 A251/A252 TROUBLESHOOTING TAB POSITION 5 A251/A252 REPLACEMENTS AND ADJUSTMENT TAB POSITION 4 A251/A252 SERVICE TABLES TAB POSITION 3 A251/A252 INSTALLATION TAB POSITION 2 A251/A252 ...
  • Ricoh FW780 | Service Manual - Page 222
  • Ricoh FW780 | Service Manual - Page 223
    ..., A251, A252 and A174 WIDE FORMAT COPIERS. Configuration Copy Speed First ... Copy Paper Feed Syncronized Cut Mode Fusing Lamp Self Diagnostic Codes... 2 Vacuum, 1 Exhaust Drive Layout Drum Area Drum Drive Charge Charge Corona... Development Drive Manual Image Density (ID) Auto Image Density Control Toner...
  • Ricoh FW780 | Service Manual - Page 224
  • Ricoh FW780 | Service Manual - Page 225
    OVERALL INFORMATION
  • Ricoh FW780 | Service Manual - Page 226
  • Ricoh FW780 | Service Manual - Page 227
    ... sideways) 24 seconds (A1/D sideways): A251 copier 30 seconds (A1/D sideways): A252 copier ... via fiber optic array Fluorescent lamp (26 W) Dual-component dry toner system Cartridge system (750 g toner/cartridge) 1,860 A1 or... and pick-off pawls Cleaning blade Manual feed (roll feeder optional) Heat and...
  • Ricoh FW780 | Service Manual - Page 228
    ... copier Roll cutting rail (A570-06) Side guides (A569-06) Roll feeder (A571-06, 07) A252 copier Copy tray (A836-10) Side guide (A569-06) Additional equipment Table (A714-... counter cannot be installed on these copiers. Other Optional Equipment • Paper Spool • Drum anti-condensation heater ...
  • Ricoh FW780 | Service Manual - Page 229
    PAPER PATH - A251 copier - - A252 copier - E A E A B D F D B C C A252V500.PCX A252V504.WMF A: Original Path (A251 copier) B: Paper from the manual feed C: Paper from the roller feed D:... Path from Rear Feeder F: Original Path (A252 copier): Switching back SM 1-3 A251/A252 Overall...
  • Ricoh FW780 | Service Manual - Page 230
    ... Fusing Exit Rollers Hot Roller Pressure Roller Gas Spring OPC Drum T/S Corona Unit Main Drive Unit Table Paper Spool 14. 15. 16. 17. 18. 19. 20.... 23. 24. 25. Roll Feeder Paper Registration Rollers Development Unit Toner Cartridge Manual Feed Table Charge Corona Unit ...
  • Ricoh FW780 | Service Manual - Page 231
    MECHANICAL COMPONENT 28 31 29 32 30 26 27 A252V505.WMF 26. 27. 28. 29. Original Guide Rear Copy Tray (Option Copy Tray) Original Feed Motor Original Entrance Roller 30. Original Rear Roller 31. Original Entrance Press Roller 32. Original Rear Press Roller SM 1-5 A251/A252 Overall ...
  • Ricoh FW780 | Service Manual - Page 232
    ...13 14 15 16 1 2 3 10 4 5 6 9 A252V503.WMF 8 7 - A252 copier only 17 19 18 A252V501.WMF 1.... Pulley Development Unit Development Unit Relay Gear Development Drive Chain Paper Registration Roller Clutch Drum... Gear Fusing Drive Sprocket/Gear Toner Collection Coil Drive Gear Drum Drive Gear Original ...
  • Ricoh FW780 | Service Manual - Page 233
    ...to supply toner to the development unit. 30 31 Moves the pick-off pawls against the drum. 6 Supplies power to the copier. Cuts AC power when the original or paper feed unit ... and prohibits the key operation. Detects the density of toner in the developer. Detects when the original lead edge ...
  • Ricoh FW780 | Service Manual - Page 234
    ... Provides light to reflect the original's image onto the drum (fluorescent lamp). Provides heat to the fusing ...power for the charge corona, charge grid, and development bias. Provides high voltage power ... overheat. 9 Keeps moisture from forming inside the copier (option). 13 Others Total Counter ...
  • Ricoh FW780 | Service Manual - Page 235
    DETAILED DESCRIPTIONS
  • Ricoh FW780 | Service Manual - Page 236
  • Ricoh FW780 | Service Manual - Page 237
    ...DRIVE Detailed Descriptions [I] [H] [G] [D] [F] [E] [B] [C] A252D502.WMF [A] - A252 copier only [K] [J] A252D503.WMF The OPC drum [A] is 80 millimeters in diameter ... main motor [B] is on. When the main motor turns on, the drive is transmitted to the drum as follows: main motor drive gear [C] ⇒...
  • Ricoh FW780 | Service Manual - Page 238
    EXPOSURE 2.3 EXPOSURE 2.3.2 PAPER AND ORIGINAL FEED (A252 ONLY) [D] [J] [B] [C] [G] [H] 26 mm [K] [F] [I] 15 ....WMF A252D501.WMF In this machine (A252 copier), first, the leading edge [A] of the original is inserted ... starts rotating and the quenching lamp, development bias, and PTL begin. Then...
  • Ricoh FW780 | Service Manual - Page 239
    ... entrance sensor. The paper feed resumes and the copy paper is transported to the drum [I]. To measure the original length for synchro-cutting, the copier CPU measures the time from when the original registration sensor detects the leading edge of the ...
  • Ricoh FW780 | Service Manual - Page 240
    ...from Toner End Condition After replacing the toner cartridge (opening and closing the original feed unit), the main motor rotates the development unit for 60 seconds. During this period, ... level reaches 3. Then, the main motor rotates the development unit for another 30 seconds. Then copies ...
  • Ricoh FW780 | Service Manual - Page 241
    ... copy paper is delivered to the lower paper exit. Detailed Descriptions The location of the fusing exit sensor is different from the A163 and A251 copier. Except for this difference, the A252 copier ... A251 and A163 copiers. Please refer to A163 copier service manual for details. SM 2-5...
  • Ricoh FW780 | Service Manual - Page 242
  • Ricoh FW780 | Service Manual - Page 243
    INSTALLATION
  • Ricoh FW780 | Service Manual - Page 244
  • Ricoh FW780 | Service Manual - Page 245
    INSTALLATION REQUIREMENTS 3. INSTALLATION 3.1 INSTALLATION REQUIREMENTS 3.1.1 ENVIRONMENT 1. Temperature Range: 2. Humidity Range: 3. Ambient Illumination: 4. Ventilation: 5. Ambient Dust: 15°C to 30°C (59°F to 86°F) 20% to 80% RH Less than 1,500 lux (do not expose to direct sunlight). ...
  • Ricoh FW780 | Service Manual - Page 246
    ... 1. Front: 1,000 mm (39 in) 2. Back: 3. Right: 4. Left: 600 mm (24 in) 600 mm (24 in) 600 mm (24 in) 3.1.3 MACHINE LEVEL 1. Front to back: Within 5 mm (0.2") of level 2. Right to left: Within 5 mm (0.2") of level Make sure that the machine is level using a carpenter's level. A251/A252 3-2 SM
  • Ricoh FW780 | Service Manual - Page 247
    INSTALLATION REQUIREMENTS 3.1.4 POWER SOURCE 1. Input Voltage Level: 120 V, 60 Hz More than 15 A (for U.S.A. version) 220 ~ 240 V, 50/60 Hz More than 7 A (for European version) 2. Permissible Voltage Fluctuation: ±10% 3. Do not set anything on the power cord. Installation NOTE: 1) Make sure the...
  • Ricoh FW780 | Service Manual - Page 248
    INSTALLATION PROCEDURE 3.2 INSTALLATION PROCEDURE 3.2.1 COPIER Accessory Check Check the accessories and their ...according to the following list: - A252 copier Original Guide ...6 pcs Operating Instruction Holder ...1 pc... Copy Tray ...1 pc Copy Guide ...1 pc Operating Instruction Holder ...1 pc A251...
  • Ricoh FW780 | Service Manual - Page 249
    ...[C] [E] [A] A252I500.WMF 1. Lower the feet [A] so that the table does not move while the copier is being installed on the table. 2. Place the copier [B] on the table... the copier too hard may cause it to drop onto the floor. While moving the copier, push the table. SM 3-5 A251/A252 Installation
  • Ricoh FW780 | Service Manual - Page 250
    ... [E] [D] [F] [E] 3. Open the paper path section [A]. 4. Remove the right upper cover [B] (2 screws). 5. Remove the drum... the screw [D] to apply cleaning blade pressure to the drum. 6. Open the fusing exit section. Remove... two strips of shipping tape [G]. (Close the paper path section and fusing exit...
  • Ricoh FW780 | Service Manual - Page 251
    ... Remove two shipping cushions [A]. 9. Open the original feed unit [B], manual feed table [C], and toner supply cover [D]. Remove a sheet [E] covering the developer entrance. Pour 1 kg of the developer [F] into the development unit evenly across its width as shown. NOTE: Close ...
  • Ricoh FW780 | Service Manual - Page 252
    ... from the development entrance. Then, pour in another kg of developer. 11. Press the following keys on the operation panel: Clear ... key again for longer than 3 seconds. The wrench and toner end indicators will blink (SP INPUT/OUTPUT mode). 13. Select 23 using the + key and - key [D] and press the RF ...
  • Ricoh FW780 | Service Manual - Page 253
    ... for longer than 3 seconds. The roll paper end and call service indicators will blink (SP mode). 17. Select 36 using the + and - keys. Enter "1" by pressing the following keys....key RF Select key [F] Five minutes later, the copier will automatically return to the normal operating mode from ...
  • Ricoh FW780 | Service Manual - Page 254
    INSTALLATION PROCEDURE [A] [B] [C] A252I507.WMF 18. Install the toner cartridge [A] as shown. 19. Remove the sealing tape [B] from the cartridge and turn the knob [C] until it stops. A251/A252 3-10 SM
  • Ricoh FW780 | Service Manual - Page 255
    INSTALLATION PROCEDURE [A] [B] [D] [C] A252I506.WMF A252I509.WMF A252 copier only (step 20) 20. Install the ... (step 21 and 22) 21. Attach the guide wires [B] to the copy tray [C]. 22. Install the ... and copy guide [D]. 23. Reinstall all the covers. 24. Check the copy quality and copier operation....
  • Ricoh FW780 | Service Manual - Page 256
    INSTALLATION PROCEDURE 3.2.2 TABLE (A836) Accessory Check Check the accessories and their quantities according to the following list: Top Plate ...1 Left Side Plate ...1 Right Side Plate ...1 Middle Plate ...1 Rear Cover ...1 Screws with Spring Washer - M4 x 8 ...14 A251/A252 3-12 SM
  • Ricoh FW780 | Service Manual - Page 257
    ... Turn the table up-side down in the direction of A. 3. Install the middle plate [F] and rear cover [G] (4 screws each). NOTE: If the optional copy tray is installed after copier installation, install the front copy tray stay [I] and rear copy tray stay [J] ...
  • Ricoh FW780 | Service Manual - Page 258
    ... Stay...1 Rear Copy Tray Stay ...1 Copy Tray Support...1 Copy Tray Guide...2 Copy Tray Sheet ...3 Nylon Clamp ...1 Rear Copy Tray...3 Copy Tray ... Rear Copy Tray Sheet - Center ...1 NOTE: The copy tray is an option for the A252 copier. When the copy tray is installed on the copier, ...
  • Ricoh FW780 | Service Manual - Page 259
    ... to the table installation procedure. If the copy tray is installed after the copier installation, remove the roll feeder and copier from the table, ...do step 1. 2. Install the copy tray guides [C] (1screw each). 3. Install the copy tray support [D] (2 truss screws). SM 3-15 A251/A252 Installation
  • Ricoh FW780 | Service Manual - Page 260
    ... illustration. 5. Hook the rear copy trays [E] onto the rear copy tray stay [D]. 6. Secure the copier power supply cord [F] to prevent the cord from interfering with the paper path (1 nylon clamp [G] and 1 screw). A251/A252 3-16 SM
  • Ricoh FW780 | Service Manual - Page 261
    ....WMF [A] [B] [A] [B] A836I508.WMF 7. Adhere the rear copy tray sheet - center (long) [A] and the two rear copy tray sheets - short [B] onto the exit cover as shown. 8. Adhere the copy tray stoppers [C] to the front side of the table middle plate [D]. SM 3-17 A251/A252 Installation [C]
  • Ricoh FW780 | Service Manual - Page 262
    ... 3.2.4 ROLL FEEDER (A571) CAUTION Unplug the copier power cord before starting the following... quantities according to the following list: Harness Cover ...2 pcs Angle Bracket ...1 pc Spacer...) ...2 pcs NOTE: When the Roll Feeder is installed on the copier, the table (A714 or A836) is required. A251...
  • Ricoh FW780 | Service Manual - Page 263
    ...while the roll feeder is being installed on the table and the copier. NOTE: Do not place the roll ... roughly, to prevent the left and right covers from being damaged. 2. Remove the shipping tapes [C] and ... cushions [D]. 3. Remove the left and right covers [E and F] (3 screws each). 4. Remove the front ...
  • Ricoh FW780 | Service Manual - Page 264
    ....WMF 5. Open the copier paper path section and remove the copier left lower cover [A] ... lower right front cover [B] (2 screws), lower right middle cover [C], toner collection bottle [D],... cover [E] (2 screws). 6. Remove the small caps [F] from the copier rear cover using cutting pliers. 7. Remove the...
  • Ricoh FW780 | Service Manual - Page 265
    ... [A] [B] [D] [C] A571I506.WMF NOTE: Take care not to drop the manual feed table when removing the bracket [A]. 8. Remove the lower front cover [B] (2 screws), reinforcement plate [C] (1 screw), bracket [A] (4 screws) (which is changed by the harness...
  • Ricoh FW780 | Service Manual - Page 266
    INSTALLATION PROCEDURE [A] [B] [D] [E] [F] A571I507.WMF [C] A571I508.WMF 9. Mount the roll feeder unit on the copier (hook the mounting arms [A] on both sides into the mounting rail [B]). NOTE: Lift the unit by holding the plate [C] just under the size marks. 10. Install the angle bracket [D] ...
  • Ricoh FW780 | Service Manual - Page 267
    ...is white. When installing the gray core version on the A252 copier, unwind one loop, as shown. For A252 copier... grounding wire [H] (1 screw with spring washer)}. For A251 copier 14. Connect the roll feeder harness to... screw each). 18. Reattach all the covers and manual feed table excluding the roll ...
  • Ricoh FW780 | Service Manual - Page 268
    ... Clear/Stop key again and hold it down for longer than 3 seconds. The roll paper end and call service indicators will blink (SP mode). 22. Select 40 using the + and - keys. Enter "1" by pressing the following keys. Function Select key [E] + key RF Select...
  • Ricoh FW780 | Service Manual - Page 269
    SERVICE TABLES
  • Ricoh FW780 | Service Manual - Page 270
  • Ricoh FW780 | Service Manual - Page 271
    ... copier. Please refer to the A163 copier service manual. Service Program Mode Table Data 0: ... sensor for 2: 3 seconds the rear feed is actuated (A252 copier only). 3: 4 seconds 4: 5 seconds 5: 6 seconds 6: 7 seconds .... Semi-synchro Cut Selects whether the roll paper cut key must 0: Pressing the roll ...
  • Ricoh FW780 | Service Manual - Page 272
    SERVICE TOOLS Mode No. Function Synchro-cut Adjusts the cut length in the semi-synchro Length ... following modes Pattern Setting in the inch mode: Refer to the A163 copier manual and page 4-13 of .... (developer counter at the last developer initialization dtE = XX Toner End Displays the total number of ...
  • Ricoh FW780 | Service Manual - Page 273
    ... Counter Function Displays the total number of toner near end conditions (dtn). Also... counter (SP78) at the last toner end condition (Hdt). Data dtn = XX Hdt... of service calls (SC) in the paper length indicator and SC Call by Location codes... 92 93 Not Used Not Used SM 4-3 A251/A252 Service Tables...
  • Ricoh FW780 | Service Manual - Page 274
    SERVICE TOOLS Mode No. RAM Clear Function Clears selected data items from the... are shown on the decal attached inside the upper right cover. Please refer to page 4-14 for the default settings for...This counter is not used for the toner density step control (described on page 2-16 in the A163 manual). *...
  • Ricoh FW780 | Service Manual - Page 275
    ... Change the settings to the Regma version 16: Change the settings to the K+E version 17: Factory use 18: Not Used 19: ...version 26: Clear all the memory and change the settings to the K+E version 27: Factory use 28: Not Used 29: Not Used 30: Clear all the memory -1 SM 4-5 A251/A252 Service Tables
  • Ricoh FW780 | Service Manual - Page 276
    SERVICE TOOLS Mode No. Total Counter Unit Setting -2 Function Selects the unit in... after clearing the toner end condition. Adjusts the speed of the original feed motor (A252 copier only... only). If the setting of SP#-74 is 1, this setting is used for the paper registration for the front original feed ...
  • Ricoh FW780 | Service Manual - Page 277
    ...SP#-39. -37 Not Used Synchro-cut Length Manual -38 Adjustment (297 ...using the Copy Media key. Translucent paper = ON Translucent Film = OFF Even if the SP... mm longer than the original (A252 copier only). Adjusts the synchro cut length... Synchro-cut Rear Feed Mode -70 SM 4-7 A251/A252 Service Tables...
  • Ricoh FW780 | Service Manual - Page 278
    SERVICE TOOLS Mode No. Cut Length Display Mode Function In semi-synchro cut... key at the trailing edge of the original from the 2nd copy paper. Before the 2nd original is inserted in the original ... from the original insertion, it is necessary to check for paper left between the copier and roll feeder. ...
  • Ricoh FW780 | Service Manual - Page 279
    ...Original Entrance Sensor (A252 copier only) Original Rear Sensor (A252 copier only) Not Used R/F Leading Edge Sensor Roll Feeder Door Switch Right Cutter Switch Left Cutter Switch Paper End Sensor Exit Cover Open (Status is "ON" when the door is open.) SM 4-9 A251/A252 Service Tables
  • Ricoh FW780 | Service Manual - Page 280
    SERVICE TOOLS Output Check Mode Table Press the Bypass Select key to turn ... 27 28 Electrical Component Main Motor Toner Supply Clutch Pick off solenoid ... Grid Voltage Transfer Charge Corona Not Used Separation Charge Corona Not ... Paper Feed Motor Original Feed Motor (Forward and Reverse) (A252 copier ...
  • Ricoh FW780 | Service Manual - Page 281
    JAM CODE LIST 4.4 JAM CODE LIST 4.4.2 JAM CODE TABLE Code dJ01 dJ02 dJ03 dJ05 dJ06 dJ07 dJ08 dJ10 dJ11 dJ17 dJ18 dJ21 dJ22 dJ23 dJ25 dJ26 ... A252 only A252 only A252 only A252 only A252 only A252 only A252 only A252 only A252 only Service Tables A252 only A252 only A252 only  SM 4-11 A251/A252
  • Ricoh FW780 | Service Manual - Page 282
    JAM CODE LIST Code dJ45 pJ51 pJ52 pJ53 pJ55 pJ60 pJ61 ... paper leading edge. Registration sensor ON check at the paper leading edge. Registration sensor OFF ... trailing edge. Registration sensor ON check at the paper trailing edge. Exit sensor OFF ... does not turn off after paper is fed 500 mm more than ...
  • Ricoh FW780 | Service Manual - Page 283
    JAM CODE LIST Fixed Paper Size Pattern Data (SP No. 22) In mm Mode 0: 1189, 841, 594, 420, 297 1: 2000, 1189, 841, 594, 420, 297, 245 2: ...70.0, 67.5, 65.0, 62.5, 60.0, 57.5, 55.0, 52.5, 50.0, 48.0, 42.0, 36.0, 34.0, 24.0, 22.0, 18.0, 17.0, 12.0, 11.0, 9.6 SM 4-13 A251/A252 Service Tables
  • Ricoh FW780 | Service Manual - Page 284
    JAM CODE LIST 12: 80.0, 77.5, 75.0, 72.5, 70.0, 67.5, 65.0, 62.5, 60.0, 57.5, 55.0, 52.5, 50.0, 48.0, 42.0, 36.0, 24.0, 18.0, 12.0, 9.6 13: 80.0, 77.5, 75.0, 72.5, 70.0, 67.5, 65.0, 62.5, 60.0, 57.5, 55.0, 52.5, 50.0, 44.0, 42.0, 34.0, 22.0, 17.0, 11.0, 9.6 14: 80.0, 78.0, 76.0, 74.0, 72.0, 70.0, 68...
  • Ricoh FW780 | Service Manual - Page 285
    ... 4.6.12 AC DRIVE BOARD Noise Filter AC Drive Board TB202 TB201 A252M500.WMF Service Remark for 220 ∼ 240 V Version Make sure that the harnesses are connected to the ... noise filter harness neutral line (white wire) white connector to TB202 on ac drive board. SM 4-15 A251/A252 Service Tables
  • Ricoh FW780 | Service Manual - Page 286
    SERVICE REMARKS AC Drive Board TB202 TB201 A252M500.WMF Service Remarks for 120 V Version Make sure that the harness is connected to the ac drive board as shown correctly 1. Set the power supply cord harness hot line (black wire) yellow connector to TB201 on ac drive board. 2. Set the power supply...
  • Ricoh FW780 | Service Manual - Page 287
    REPLACEMENT AND ADJUSTMENT
  • Ricoh FW780 | Service Manual - Page 288
  • Ricoh FW780 | Service Manual - Page 289
    ... FEED UNIT REMOVAL (A252 ONLY) 1. Remove the left and right upper covers. 2. Remove the upper original guide [A]. 3. Push the projections [B] into the holes ...shown and remove the operation panel [D] (1 screw and 2 connectors). 4. Open the original feed unit [E] and unhook the stoppers ...
  • Ricoh FW780 | Service Manual - Page 290
    ...5.2.3 FIBER OPTICS ARRAY REMOVAL (A252 ONLY) 1. Remove the exposure glass. 2. Open the toner supply cover [E] and remove the front original guide plate [F] (1 screw). 3. Remove the rear original guide plate [G] (4 screws and 1 pin [H]). 4. Lift up the fiber optics array ...
  • Ricoh FW780 | Service Manual - Page 291
    OPTICS 5.2.4 EXPOSURE LAMP REMOVAL [B] [A] [A] A252R511.WMF 2. Turn the exposure lamp [A] 1/4 of a turn and remove. NOTE: Make sure that the direction of the aperture [B] of the exposure lamp is towards the fiber optics array side (rear side). SM 5-3 A251/A252 Replacement Adjustment 1. ...
  • Ricoh FW780 | Service Manual - Page 292
    OPTICS 5.2.5 LIGHT SENSOR REPLACEMENT (A252 ONLY) [A] A252R503.WMF 1. Follow the steps from 1 to 2 of the fiber optics array removal. 2. Replace the light sensor [A] (1 screw, 1 connector). A251/A252 5-4 SM
  • Ricoh FW780 | Service Manual - Page 293
    OPTICS 5.2.6 SYNCHRO-CUT LENGTH ADJUSTMENT (A252 ONLY) This adjustment should be carried out when the original registration and/or original entrance sensor is replaced. 1. Measure the actual length of A3 (297) and A0 (1189) originals. 2. Access SP#-35 (synchro-cut length auto adjustment, 297 mm) ...
  • Ricoh FW780 | Service Manual - Page 294
    ...5.4.1 DRUM UNIT REMOVAL [A] [B] [B] [A] [F] [E] [C] A252R504.WMF [D] A252R505.WMF 1. Remove the development unit. 2. Remove the 2 screws [A] at both ends. 3. Remove the... reinstalling the drum unit, hook the drum unit guides [E] on the pins [F] of the copier side plates. 2) Hold both ends of the ...
  • Ricoh FW780 | Service Manual - Page 295
    ....WMF NOTE: Close the paper path section to remove and reinstall the fusing unit. 1. Remove the copier rear cover. 2. Open the exit cover [A] and remove the shoulder ... the two pulleys [I] and raise the left hinge [J] using tape [K]. SM 5-7 A251/A252 Replacement Adjustment [A]...
  • Ricoh FW780 | Service Manual - Page 296
    ... screws). 8. While pressing down the fusing pressure release bar [E], pull out the fusing unit. NOTE: When reinstalling the fusing unit, press down the fusing pressure release bar [E], set the fusing unit on the guides [F] and align the cuts [G] to the side plates [H] at both ends. A251/A252 5-8 SM
  • Ricoh FW780 | Service Manual - Page 297
    ... wires with rough material (sand paper, etc.) as this will damage the corona wire. 4) Do not use any solvent to clean the wire as this will cause uneven charging of the drum. Preparation 1. Remove the T & S corona unit. 2. Remove the paper guides [A] and endblock covers [B]. SM 5-9...
  • Ricoh FW780 | Service Manual - Page 298
    ... 1. Remove the separation corona wire [C]. 2. Hook one end of the new separation corona wire on the terminal [D] of the right endblock. 3. Hook the center part of the separation corona wire on the spring [E] of the left endblock. 4. Set the wire on the slots [F]. 5. While pushing the spring in the ...
  • Ricoh FW780 | Service Manual - Page 299
    ... rear original feed) Change the registration roller start timing by SP#-5 and/or SP#-27 1. Make several copies by using the manual feed or roll feeder and check the registration. 2. Adjust the registration using SP#-5 and/or SP#-27 if the registration is not within ...
  • Ricoh FW780 | Service Manual - Page 300
  • Ricoh FW780 | Service Manual - Page 301
    TROUBLESHOOTING
  • Ricoh FW780 | Service Manual - Page 302
  • Ricoh FW780 | Service Manual - Page 303
    ... CALL CONDITION The following service conditions are newly added as the A251 and A252 copiers. For other SC ... SP38 and change the data from "1" to "0". 6.2.12 SC CODE E-14: ZERO CROSS SIGNAL DETECTION ... reset signal. - Points to check • Main switch • Main board Troubleshooting SM 6-1 A251/A252
  • Ricoh FW780 | Service Manual - Page 304
    BLOWN FUSE TABLE 6.3 BLOWN FUSE TABLE 6.3.1 POWER SUPPLY UNIT Europe Version Fuse No. FU301 FU302 FU303 FU304 Specification 250 V 5A 250 V 6.3 A 250 V 6.3 A 250 V 6.3 A Symptom No power. Flourescent lamp does not light. Black copy. No indication. Beeper sound. E = 10 is indicated. U.S.A. Version ...
  • Ricoh FW780 | Service Manual - Page 305
    B047/B048 SERVICE MANUAL - Insert Version - The B047/B048 machines are based on the A163/A251/A252 copiers. Only the differences from the base copier ... documentation should be treated as an insert version of the base copier's service manual. It should always be utilized together with ...
  • Ricoh FW780 | Service Manual - Page 306
  • Ricoh FW780 | Service Manual - Page 307
    INSERTION PROCEDURE OF SERVICE MANUAL 1. Replace the book spine tag with the new one. 2. Insert the B047/B048 service manual after the A163/A251/A252 manual.
  • Ricoh FW780 | Service Manual - Page 308
  • Ricoh FW780 | Service Manual - Page 309
    ... 1. OVERALL MACHINE INFORMATION ...1-1 1.1 1.2 1.3 1.4 1.5 1.6 SPECIFICATIONS...1-1 PAPER PATH...1-3 DRUM PROCESSES ...* MECHANICAL COMPONENTS ...1-4 DRIVE ... ID CONTROL...* Manual ID Control...* 2.4 DEVELOPMENT ...2-4 2.4.1 OVERVIEW ...* 2.4.2 DRIVE MECHANISM...* 2.4.3 CROSS-MIXING ...* 2.4.4 TONER ...
  • Ricoh FW780 | Service Manual - Page 310
    ... from Toner End Condition...2-5 Toner Density Sensor ...* 2.4.5 DEVELOPMENT BIAS ...* Basic Concept...* Manual Image Density Bias... CORONA CIRCUIT...* 2.6 CLEANING ...* 2.6.1 OVERVIEW ...* 2.6.2 USED TONER COLLECTION ...2-6 2.7 QUENCHING...* 2.8 FUSING AND PAPER EXIT ...2-7 2.8.1 OVERVIEW ...2-7 2.8.2...
  • Ricoh FW780 | Service Manual - Page 311
    Both copiers (step 24 and 25)...3-12 3.2.2 TABLE (B439) ...3-13 Accessory ...25 4.4.1 ACCESS PROCEDURE ...* 4.4.2 JAM CODE TABLE...4-25 Fixed Paper Size Pattern Data (... LUBRICANTS ...* 4.6 SERVICE REMARKS ...4-29 4.6.1 DRUM UNIT ...* Drum ...* 4.6.2 CHARGE CORONA...* 4.6.3 OPTICS ...* 4.6.4 DEVELOPMENT ...
  • Ricoh FW780 | Service Manual - Page 312
    ...OTHERS...* 4.6.12 AC DRIVE BOARD ...4-29 Service Remark for 220 ~ 240 V Version...4-29 ...COVER REMOVAL ...* Right Upper Cover ...* Right Lower Front, Right Lower Middle, and... (A252 ONLY) ...* 5.3 DEVELOPMENT ...* 5.3.1 DEVELOPMENT UNIT REMOVAL...* 5.3.2 DEVELOPER REMOVAL ...* 5.3.3 TONER DENSITY SENSOR...
  • Ricoh FW780 | Service Manual - Page 313
    ...BLACK LINE OR BAND...* 6.1.5 ENTIRELY BLANK COPY ...* 6.1.6 PAPER CREASING...* 6.2 SERVICE CALL CONDITIONS ...6-1 6.2.1 SC ... E-3: Hot Roller Thermistor Open ...6-1 SC Code E-4: Hot Roller Thermistor Short ...6-2 SC ... E-8: Fusing Warm-up Error ...6-3 SC Code E-9: Toner Density Sensor Abnormal...6-3 SM ...
  • Ricoh FW780 | Service Manual - Page 314
    ... E-10: Main Motor Abnormal...6-3 SC Code E-11: Toner Density Sensor Adjustment Error ...6-3 SC Code E-13: Total Counter Abnormal...6-4 SC Code E-14: Zero Cross Signal Detection Abnormal...6-4 SC Code E-15: Main Switch Abnormal ...6-4 SC Code E-17: Unstable Fusing Temperature ...6-4 SC Code E-18:...
  • Ricoh FW780 | Service Manual - Page 315
    ... check has to be made with exterior covers off or open while the main switch is turned ... with the specified ones at the specified intervals. 3. Toner and developer are non-toxic, but if ... STANDARDS 1. The copier and its peripherals must be installed and maintained by a customer service representative ...
  • Ricoh FW780 | Service Manual - Page 316
    ... NOTES FOR DISPOSAL 1. Do not incinerate the toner cartridge or the used toner. Toner dust may ignite suddenly when exposed to open flame. 2. Dispose of used toner, developer, and organic photoconductors according to local regulations. (These are non-toxic supplies.)...
  • Ricoh FW780 | Service Manual - Page 317
    ...B048 OVERALL INFORMATION B047/B048 DETAILED DESCRIPTIONS B047/B048 INSTALLATION B047/B048 SERVICE TABLES ROLL FEED UNIT B435/B436 TAB POSITION 8 TAB POSITION 7 TAB POSITION 6 B047/B048 TROUBLESHOOTING TAB POSITION 5 B047/B048 REPLACEMENT AND ADJUSTMENT TAB POSITION 4 TAB ...
  • Ricoh FW780 | Service Manual - Page 318
  • Ricoh FW780 | Service Manual - Page 319
    ...FW760 A252 FW870 A174 FW770 B047 FW780 B048 Configuration Table Top Machine ...) 24 sec. Multiple Copy N/A Paper Feed (Standard) Manual Bypass Options * 1 Roll ... * Roll Cutting Rail * Table Dimensions (W x D x H) Copier Only 174 lb. 79 Kg....mm 176 lbs 80 kg Weight Copier Only 174 lb. 79 Kg...
  • Ricoh FW780 | Service Manual - Page 320
  • Ricoh FW780 | Service Manual - Page 321
    OVERALL INFORMATION
  • Ricoh FW780 | Service Manual - Page 322
  • Ricoh FW780 | Service Manual - Page 323
    .../D sideways) 21 seconds (A1/D sideways): B047 copier 25 seconds (A1/D sideways): B048 copier... via fiber optic array Fluorescent lamp (26 W) Dual-component dry toner system Cartridge system (750 g toner/cartridge) 1,860 A1 or... and pick-off pawls Cleaning blade Manual feed (roll feeder optional) Teflon ...
  • Ricoh FW780 | Service Manual - Page 324
    ... Codes: Power Source: Power Consumption: 16 codes, displayed on the copy counter 115 V/60 Hz,...2 rolls) Side guide (B438) Additional equipment - - - - Copy tray (B440) - B048 copier NOTE: ... Optional Equipment • Roll Holder Unit (B394) • Drum anti-condensation heater Specifications are subject to...
  • Ricoh FW780 | Service Manual - Page 325
    ... - B047 copier E A B D - B048 copier E A B D C C B047V102.WMF B048V102.WMF A: Original Path B: Manual Feed Path C: Roll Feeder Path D: Paper Exit...times). Both versions can be equipped with either a single or a double paper roll. SM 1-3 B047/B048 Overall Information 1.2 PAPER...
  • Ricoh FW780 | Service Manual - Page 326
    ... Exit Rollers 6. Hot Roller 7. Pressure Roller 8. Gas Spring 9. OPC Drum 10. T/S Corona Unit 11. Main Drive Unit B047/B048 1-4 12. Roll Feed Unit (1 roll or 2 rolls) 13. Roll Paper 14. Paper Registration Rollers 15. Manual Feed Table 16. Development Unit 17. Toner Cartridge 18. 2nd Original Feed ...
  • Ricoh FW780 | Service Manual - Page 327
    MECHANICAL COMPONENTS 27 26 25 28 29 23 24 B048V101.WMF 23. Original Guide 24. Optional Copy Tray 25. Original Entrance Roller 26. Original Entrance Press Roller 27. Original Roller Feed Motor 28. Original Rear Press Roller 29. Original Rear Roller SM 1-5 B047/B048 Overall Information
  • Ricoh FW780 | Service Manual - Page 328
    ... unit. 30 31 Moves the pick-off pawls against the drum. 6 Supplies power to the copier. Cuts AC power when the original or paper feed unit are opened. ...is opened. "Door Open" is displayed on the operation panel when the used toner cover is open. 17 18 12 48 Sensors Door Open ...
  • Ricoh FW780 | Service Manual - Page 329
    ...Provides light to reflect the original's image onto the drum (fluorescent lamp). Provides heat to the fusing ...power for the charge corona, charge grid, and development bias. Provides high voltage power ... overheating. 9 Keeps moisture from forming inside the copier (option). 13 Others Total Counter...
  • Ricoh FW780 | Service Manual - Page 330
  • Ricoh FW780 | Service Manual - Page 331
    DETAILED DESCRIPTIONS
  • Ricoh FW780 | Service Manual - Page 332
  • Ricoh FW780 | Service Manual - Page 333
    ... B047D501.WMF NOTE: For clarity's sake, the following description will refer to the paper's edges as edge [A] (furthest edge from the operator) and edge [B] (closest to the operator). Original Positioning In the B048 copier, edge [A] of the original is placed onto the original table. This ...
  • Ricoh FW780 | Service Manual - Page 334
    ...feed motor starts rotating. [B] This delay gives the user time to align edge [A] against the original ... and the copy paper is transported to the drum [I]. To measure the original length for cutting, the copier's CPU ... (a stepper motor) turns. Just before the paper is cut, the feed motor speed doubles....
  • Ricoh FW780 | Service Manual - Page 335
    ... registration sensor, edge [B] is delivered to the original registration sensor position. Everything pauses until the user presses the start key. Original feed and paper feed then resume. Detailed Descriptions SM 2-3 B047/B048
  • Ricoh FW780 | Service Manual - Page 336
    DEVELOPMENT 2.4 DEVELOPMENT 2.4.4 TONER DENSITY CONTROL The toner supply amount ratio is determined by the following conditions... VTS < 3.50 3.50 ≤ VTS TS Level (Toner Supply Ratio) 0: No supply 1: 7.5% 2: 7.5% 4: 15% 5: 100% Toner density control table has been changed for B047/B048 copiers. ...
  • Ricoh FW780 | Service Manual - Page 337
    DEVELOPMENT Recovery from Toner End Condition After replacing the toner cartridge (opening and... reaches 3. The main motor continues to rotate the development unit for another 30 seconds. Then... 3, the CPU stops the machine and displays the toner end condition. This prevents the operator from resetting...
  • Ricoh FW780 | Service Manual - Page 338
    ... [A] [B] B047D101.WMF B047/B048 copiers have a used toner overflow sensor [A] and a used toner cover switch [B]. When the .... The used toner cover switch detects when the used toner cover is open. "Door open" is displayed on the operation panel, and the start key is disabled. B047/B048 2-6 SM
  • Ricoh FW780 | Service Manual - Page 339
    ... turned on, the machine assumes that it has not been used recently, and the main motor must rotate to generate the necessary triboelectric charge on the toner and developer. In the A163/A251/A252 copiers...Please refer to A163/A251/A252 copier service manual for additional details. SM 2-7 B047/...
  • Ricoh FW780 | Service Manual - Page 340
    FUSING AND PAPER EXIT 2.8.3 TEMPERATURE CONTROL Hot Roller Temperature Control Hot Roller Temp. (°C) 198 Mode 8 Mode 7 190 Mode 6 Mode 5 180 Mode 4 Mode 3 170 Mode 2 Mode 1 160 150 142 ~60 63 66 69 72 75 78 81 84 87 90 93 96 99 102 105 108 111 114 117 120~ Pressure Roller Temp. (°C) Mode 8...
  • Ricoh FW780 | Service Manual - Page 341
    ...compliant machines and the previous models. Mode Non-Energy Star Energy Star Starts timing once the last copy job is complete. When the specified time has passed, the copier turns off. The time can be adjusted from 1 to 240 minutes. Default: 30 minutes Auto Off Mode Not available RA CN102 -A3 V ...
  • Ricoh FW780 | Service Manual - Page 342
  • Ricoh FW780 | Service Manual - Page 343
    INSTALLATION
  • Ricoh FW780 | Service Manual - Page 344
  • Ricoh FW780 | Service Manual - Page 345
    INSTALLATION REQUIREMENTS 3. INSTALLATION 3.1 INSTALLATION REQUIREMENTS 3.1.1 ENVIRONMENT 1. Temperature Range: 2. Humidity Range: 3. Ambient Illumination: 4. Ventilation: 5. Ambient Dust: 15°C to 30°C (50°F to 86°F) 20% to 80% RH Less than 1,500 lux (do not expose to direct sunlight). Room ...
  • Ricoh FW780 | Service Manual - Page 346
    ... 1. Front: 1,000 mm (39 in) 2. Back: 3. Right: 4. Left: 600 mm (24 in) 600 mm (24 in) 600 mm (24 in) 3.1.3 MACHINE LEVEL 1. Front to back: Within 5 mm (0.2") of level 2. Right to left: Within 5 mm (0.2") of level Make sure that the machine is level using a carpenter's level. B047/B048 3-2 SM
  • Ricoh FW780 | Service Manual - Page 347
    INSTALLATION REQUIREMENTS 3.1.4 POWER SOURCE Important: The machine must be installed in a building/facility equipped with a protective device such as a circuit breaker, as the machine relies on such devices for protection against over-current and short circuits. 1. Input Voltage Level: 120 V, 60 ...
  • Ricoh FW780 | Service Manual - Page 348
    INSTALLATION PROCEDURE 3.2 INSTALLATION PROCEDURE 3.2.1 COPIER Accessory Check Check the accessories and their ... according to the following list: - B048 copier Original Guides...6 pcs Operating Instruction Holder...1 pc ... Decal (-27 only) ...1 pc Operating Instructions (-17 only)...1 pc B047/B048 ...
  • Ricoh FW780 | Service Manual - Page 349
    ... on the roll feeder. When B047 copier is placed on the roll feeder, first remove the lower front cover [A] and the manual feed table [B] for installation. 1. Remove the lower front cover [A] (2 screws), reinforcement plate [C] (1 screw), bracket [D] (4 screws) (which is ...
  • Ricoh FW780 | Service Manual - Page 350
    ...NOTE: The installation procedures are not shipped with the copier, always bring this manual with you. !CAUTION 1. Unplug... the installation, make sure the machine is level. 3. The copier is very heavy (85 kg, 187.... It takes at least two people to lift the copier safely. 4. Please be careful not to get...
  • Ricoh FW780 | Service Manual - Page 351
    ...and open the paper path section [E]. 7. Remove the right upper cover [F] (2 screws). 8. Remove the drum ...remove the screw [H]. This applies cleaning blade pressure to the drum. NOTE: Be sure to remove the protective sheet ... two strips of shipping tape [L]. Close the paper path section and fusing exit ...
  • Ricoh FW780 | Service Manual - Page 352
    ....WMF [D] B047I504.WMF 11. Open the original feed unit [A], manual feed table [B], and toner supply cover [C]. Remove the sheet [D] covering the developer entrance. Pour 1 kg of the developer [E] into the development unit evenly across its width as shown. NOTE: Close the ...
  • Ricoh FW780 | Service Manual - Page 353
    ...motor must rotate to generate a triboelectric charge on the developer and toner. However, to prevent damage to the hot roller,... stop the main motor. Pour in the second 1 kg of developer. 13. To begin main motor rotation, ... wrench and toner end indicators will blink (SP INPUT/OUTPUT mode). 15. Use the ...
  • Ricoh FW780 | Service Manual - Page 354
    ...seconds. The roll paper end and call service indicators will blink (SP mode). 19. Using the + and - keys, select 36. Enter "1" by ...RF Select key [F] This begins the developer initialization. Initialization takes about five minutes, after which the copier will automatically return to ...
  • Ricoh FW780 | Service Manual - Page 355
    ...Installation B047I507.WMF [C] 20. Install the toner cartridge [A] as shown. 1) Shake the cartridge 5 to 10 times and insert it into the toner hopper. 2) Peel off the green tape [B] ... toner supply holes. 3) Rotate the knob [C] of the cartridge clockwise until it stops. SM 3-11 B047/B048...
  • Ricoh FW780 | Service Manual - Page 356
    INSTALLATION PROCEDURE [B] [A] B047I506.WMF [C] [E] [D] B047I509.WMF B048 copier only (step 21) 21. Install the original ...[D] and copy guide [E]. Both copiers (step 24 and 25) 24. Reinstall all the covers. 25. Check the copy quality and copier operation. 26. Install the optional roll feeder. (...
  • Ricoh FW780 | Service Manual - Page 357
    INSTALLATION PROCEDURE 3.2.2 TABLE (B439) Accessory Check Check the accessories and their quantities according to the following list: Top Plate ...1 Left Side Plate ...1 Right Side Plate ...1 Middle Plate ...1 Rear Cover ...1 Screws with Spring Washers - M4x8 ...14 Installation SM 3-13 B047/B048
  • Ricoh FW780 | Service Manual - Page 358
    ... [C] (6 screws). 2. Turn the table up-side down. Be sure to rotate it as shown in the illustration. 3. Install the middle plate [D] and rear cover [E] (4 screws each). 4. Tighten all the screws until the spring washers [F] are completely flat. 5. Turn the table right-side up. B047/B048 3-14 SM
  • Ricoh FW780 | Service Manual - Page 359
    ... list: Copy Tray Stay ...1 Copy Tray Support...1 Copy Tray Guides...2 Copy Tray Sheets (with ... Stoppers...2 Screws with Flat Washers - M4x6...6 Tray Sheet Guides...3 Rear Copy Tray Sheets (no rubber pads)...3 NOTE: The copy tray is an option for the B048 copier. When the copy tray is installed on the...
  • Ricoh FW780 | Service Manual - Page 360
    ...[A] on the screws. Then secure it to the left and right side plates (2 screws for each: M4x6 with flat washers). NOTE: Be careful when installing the copy tray stay. Do not scratch the surface of the table. 4. Install the copy tray support [H] (2 screws: M4x6 with flat washers). B047/B048 3-16 SM
  • Ricoh FW780 | Service Manual - Page 361
    ....WMF B440I114.WMF [C] [C] B440I116.WMF 0±2mm B440I115.WMF 5. Remove the rear cover [A] (2 screws). 6. Attach the rear copy tray sheets [B] and the tray sheet guides [C] to the rear cover as shown. 7. Install the rear cover (2 screws). SM 3-17 B047/...
  • Ricoh FW780 | Service Manual - Page 362
    INSTALLATION PROCEDURE [A] [B] B440I120.WMF 60±10mm 60±10mm 80±10mm [C] [D] B440I123.WMF 8. Hook the rear copy trays [A] onto the copy tray stay [B]. 9. Attach the copy tray stoppers [C] onto the bottom of the middle plate [D]. B047/B048 3-18 SM
  • Ricoh FW780 | Service Manual - Page 363
    ... with Flat Washers - M3x6...2 pcs Left Joint Cover...1 pc Right Joint Cover ...1 pc Harness Clamp ...2 pcs Paper Holder 1 Roll ...2 pcs 2 Roll ...4 pcs Guide Plate...1 pc Front Joint Cover ...1 pc Cutter Blade Caution Decal (-27 only) ...1 pc Joint...
  • Ricoh FW780 | Service Manual - Page 364
    ... on the roll feeder. When B047 copier is placed on the roll feeder, first remove the lower front cover [A] and the manual feed table [B] for installation. 1. Remove the lower front cover [A] (2 screws), reinforcement plate [C] (1 screw), bracket [D] (4 screws) (which is ...
  • Ricoh FW780 | Service Manual - Page 365
    ... starting the installation, make sure the machine is level. 3. The copier is very heavy (85 kg, 187 ...installed. !CAUTION Do not open the paper tray until the copier is placed on top of the roll ...feet [D] into the roll feeder holes [E]. !WARNING The copier is not attached to the roll feeder. Pushing ...
  • Ricoh FW780 | Service Manual - Page 366
    ....WMF 3. Release the lock lever [A] and open the copier paper path section [B]. 4. Remove the copier's left lower cover [C] (2 screws), lower right front cover [D] (2 screws), lower right middle cover [E], and toner collection bottle [F] (1 connector). B047/B048 3-22 SM
  • Ricoh FW780 | Service Manual - Page 367
    ... tray [A] and install the left [B] and right [C] joint brackets (2 screws each: blue). 6. Remove the paper tray stopper [D] (1 screw). NOTE: After the copier has been placed on the roll feeder, the paper tray can be pulled out and the paper ...
  • Ricoh FW780 | Service Manual - Page 368
    ... [D] [G] B435I124.WMF [E] [H] B435I108.WMF [D] [I] B435I110.WMF 8. Remove the roll feeder's rear cover [A] (6 screws). 9. Remove the copier's rear cover [B] (2 screws). 10. Remove the small caps [C] from the copier's rear cover using cutting pliers. 11. Install the roll...
  • Ricoh FW780 | Service Manual - Page 369
    ... grounding wire [B] (1 screw: M4x8 with a spring washer) to the copier. NOTE: To ensure proper grounding, tighten the... washer is completely flat. 15. Install the harness covers [C] (1 screw for each: M4x10 with flat washers). ...screws: M4x8). 18. Put back the copier's rear cover. SM 3-25 B047/B048 ...
  • Ricoh FW780 | Service Manual - Page 370
    INSTALLATION PROCEDURE [A] [B] [C, D] 19. Hook the guide plate [A] on the copier and then secure it (2screws: ...Install the front joint cover [B] (2 screws: M3x6 with flat washers). 21. Reassemble the copier. 22. Install the left and right joint covers [C, D] (2 screws for each: M4x8 each). B047/...
  • Ricoh FW780 | Service Manual - Page 371
    ... seconds. 25. After 3 seconds, the roll paper end and call service indicators will blink (SP mode). 26. Select 40 using the + and - keys. Enter "1" (B435: 1 roll) or "2"... the corresponding indicator [G] is blinking (same for 2nd roll). Use the Function Select Key to switch between the two ...
  • Ricoh FW780 | Service Manual - Page 372
    INSTALLATION PROCEDURE 3.2.5 ROLL CUTTING RAIL (B437) The installation is identical to that of the A163 copier's roll cutting rail (A570). Please refer to the A163 service manual for details. The roll cutting rail and the roll feeder cannot both be ...
  • Ricoh FW780 | Service Manual - Page 373
    SERVICE TABLES
  • Ricoh FW780 | Service Manual - Page 374
  • Ricoh FW780 | Service Manual - Page 375
    ... SERVICE PROGRAM MODE Service Program Mode Table 1. A "*" before the mode number means that the mode can be... within the specified time limit, the copy paper is ejected. Sets the manual feed delay. The timer ... time has passed, the registration rollers start rotating. SM 4-1 B047/B048 Service Tables
  • Ricoh FW780 | Service Manual - Page 376
    SERVICE TOOLS Mode No. Leading Edge Increase/Decrease Speed Setting *8 Function This... Interval When the user hold downs the + or - key to change the leading edge margin, print number or paper length... original is placed on the original table in manual feed mode (B048 copiers only). After the selected ...
  • Ricoh FW780 | Service Manual - Page 377
    SERVICE TOOLS Mode No. Length Size Magnification Semi-synchro Cut Original Scanning Mode...mode (B047 copiers only). When using the default method, the user must manually press the roll paper cut key...0: Disable 1: Enable 0: Disable 1: Enable 0: No 1: All indicators on SM 4-3 B047/B048 Service Tables
  • Ricoh FW780 | Service Manual - Page 378
    ... again from the beginning. If the machine fails to adjust the toner sensor output, "E = 11" is displayed. Darker Image ... 38 39 Release Fusing Unit Service Call Not Used Roll Feeder Identification ... independently in the appropriate SP mode. Adjusts the roll paper's feed speed. 0: Release SC 1: SC ...
  • Ricoh FW780 | Service Manual - Page 379
    ... and/or minimum values, the maximum or minimum values are used instead. Note: The value for the 1st roll feed ... adjust the cutting length of 300 mm in the translucent paper mode. Note: The value for the 1st roll ... Cutting Length Adjustment (300 mm, translucent Film) SM 4-5 B047/B048 Service Tables
  • Ricoh FW780 | Service Manual - Page 380
    SERVICE TOOLS Mode No. Roll Feeder Cutting Length Adjustment (1,100 mm, Plain ... the cut length in the semisynchro cut mode (B047 copier only). Changes the main motor speed. 46... main motor speed is incorrect, rJ98 or rJ99 error messages will be displayed. Use this SP to make the necessary adjustments....
  • Ricoh FW780 | Service Manual - Page 381
    SERVICE TOOLS Mode No. Toner End Detection Setting Toner Overflow Detection Setting 51 ... the bottle. Manually clear the used toner counter. Used Toner Counter Clear 53 Developer Warm-up Setting 54 Paper Length Limit ... 3: 320.0 inch 4: 400.0 inch 5: 480.0 inch 55 SM 4-7 B047/B048 Service Tables
  • Ricoh FW780 | Service Manual - Page 382
    ... of copies. The default settings for the B047 and B048 copiers are different. Data 0: 99 sheets (B047) 1: ... a noise or a Wrong Paper Feed error. If this SP is set to 1, you can use the emergency stop key ... the maximum copy length for multiple copies (B048 copier only). While the Emergency Stop key is ...
  • Ricoh FW780 | Service Manual - Page 383
    SERVICE TOOLS Mode No. Fixed Paper Length Special Mode Function Selects the interval of each step ... voltage is lower than 1 V, toner is not supplied. Sets the display speed. 63 64 Not Used SP Mode Display ...X,XXX 66 Machine Operation Counter Not Used 67 68 SM 4-9 B047/B048 Service Tables
  • Ricoh FW780 | Service Manual - Page 384
    SERVICE TOOLS Mode No. Total Copy Length/ Number Display (Feet) Total ... XX,XXX This counter should be cleared when the OPC drum is replaced. (SP#-1) dE = XX,XXX This counter is...meters) on the current developer. Displays the total length of copies (in meters) on the current toner cartridge Indicates ...
  • Ricoh FW780 | Service Manual - Page 385
    ...) Preset Cut Adjustment (3,000 mm, translucent paper) Preset Cut Adjustment (3,000 mm, film) Number of Service Call by Location Service Call Records Adjust...by location. Displays the last five service calls. SCs are displayed one at a time. 91 92 to 99 Not Used SM 4-11 B047/B048 Service Tables
  • Ricoh FW780 | Service Manual - Page 386
    SERVICE TOOLS Mode No. RAM Clear Function Clears selected data items from ...cutter settings from the decal attached inside the upper right cover. Please refer to page 4-14 for the default settings ...This counter is not used for the toner density step control (described on page 2-16 in the A163 manual). ...
  • Ricoh FW780 | Service Manual - Page 387
    SERVICE TOOLS Mode No. RAM Clear Function Clears selected data items ... other Other 3 version 28: Not Used 29: Not Used 30: Clear all ...can be turned ON and OFF using the Copy Media key. Translucent paper: ON Translucent Film:...: Standard 0 ← 50 → 99 Darker Lighter SM 4-13 B047/B048 Service Tables
  • Ricoh FW780 | Service Manual - Page 388
    SERVICE TOOLS Mode No. Hot Roller Temperature Adjustment Pressure Roller Temperature Adjustment Hot...200: Standard 150 ← 200 → 249 Low High -7 -8 -9 Drum Charge Setting -10 Copy Grid Setting -... corona can be turned on and off using the Copy Media key. Translucent paper = ON Translucent Film = ...
  • Ricoh FW780 | Service Manual - Page 389
    SERVICE TOOLS Mode No. Separation AC Voltage setting Function Determines the AC separation corona ... corona can be turned on and off using the Copy Media key. Translucent paper = ON Translucent Film = OFF To...3→8 Low High SM 4-15 B047/B048 Service Tables 200: Standard 0 ← 200 → 249 Low High
  • Ricoh FW780 | Service Manual - Page 390
    ...after clearing the toner end condition. Adjusts the speed of the original feed motor (B048 copier ...Select 1 in this mode. 2. Exit from SP mode. 3. Select the manual feed and enter the copy quantity to 3 or more. 4. Place the sheet on the manual feed table and place the original on the original table....
  • Ricoh FW780 | Service Manual - Page 391
    ... of the original feed motor is corrected from the leading edge to 183 mm (B048 copier only). Adjusts the paper registration for the rear original feed (B048 ... or and off using the Copy Media key. Translucent paper = ON Translucent Film = OFF Displays the toner sensor output voltage ...
  • Ricoh FW780 | Service Manual - Page 392
    SERVICE TOOLS Mode No. Synchro-cut Length Auto Adjustment (297 mm) Function Adjusts ... on SP#-39. -37 Not Used Synchro-cut Length Manual Adjustment (297 mm) Adjusts the... a 1,189 mm original. Increasing the number will shorten the paper cut length. -9.9 ← 0 → 9.9 1 step = 0.1 mm (This value is over ...
  • Ricoh FW780 | Service Manual - Page 393
    SERVICE TOOLS Mode No. No Misfeed Detection Mode Free Run Mode... roll feeder is installed and selected paper length is more than 594 mm... length. Once the counter reaches this value, the used toner full condition is triggered. Not... 1 volt higher than the target value. SM 4-19 B047/B048 Service Tables...
  • Ricoh FW780 | Service Manual - Page 394
    SERVICE TOOLS Mode No. Fluorescent Lamp Abnormal Time Check 2 Light Sensor Voltage Display (...image areas can be turned on and off using the Copy Media key. Translucent paper = ON Translucent Film = OFF ...about 200 mm longer than the original (B048 copier only). 0: No 1: Manual Feed Attention Mode 1 0: ...
  • Ricoh FW780 | Service Manual - Page 395
    SERVICE TOOLS Mode No. Cut Length Display Mode Function In semi-synchro cut mode, the ... to the scanning start position, copy paper is cut and fed out of the copier. Whichever setting is selected, ... after the original passes through the original registration sensor. SM 4-21 B047/B048 Service Tables
  • Ricoh FW780 | Service Manual - Page 396
    SERVICE TOOLS Mode No. Fusing Temperature Recovery Setting Function Determines how the machine recovers when the fusing temperature drops below the target value. This is only triggered when making multiple copies using fusing mode 8 (highest temperature mode) (B048 copier only). Data 0: No recovery ...
  • Ricoh FW780 | Service Manual - Page 397
    ... normally.) Door Switch (Status is "ON" when the door is open.) Original Entrance Sensor (B048 copier only) Original Rear Sensor (B048 copier only) Not Used R/F Leading Edge Sensor Roll ... (2nd Roll) Exit Cover Open (Status is "ON" when the door is open.) Used Toner Cover Switch Toner ...
  • Ricoh FW780 | Service Manual - Page 398
    SERVICE TOOLS Program No. 8 9 10 11 12 13 14 15 16 to 19 ...+ Quenching Lamp Original Feed Motor (Forward) (B048 copier only) Original Feed Motor (Reverse) (B048... right cutter switches. The number of the movements (0 ~ 9999) is displayed in the paper length indicator. When the roll feeder is pulled out ...
  • Ricoh FW780 | Service Manual - Page 399
  • Ricoh FW780 | Service Manual - Page 400
    JAM CODE LIST Code dJ45 pJ51 pJ52 pJ53 pJ55 pJ60 pJ61 pJ62 pJ63 ... at the paper leading edge. Registration sensor ON is detected at the paper leading edge. Registration sensor OFF is detected at the paper trailing edge. Registration sensor ON is detected at the paper trailing edge. Exit sensor OFF is ...
  • Ricoh FW780 | Service Manual - Page 401
    JAM CODE LIST Fixed Paper Size Pattern Data (SP No. 22) In mm Mode 0: 1189, 841, 594, 420, 297 1: 3000, 2000, 1189, 841, 594, 420, 297, 280 ... 96.0, 80.0, 75.0, 70.0, 65.0, 60.0, 55.0, 50.0, 48.0, 44.0, 42.0, 36.0, 34.0, 24.0, 22.0, 18.0, 17.0, 12.0, 11.0 SM 4-27 B047/B048 Service Tables
  • Ricoh FW780 | Service Manual - Page 402
    JAM CODE LIST 10: 118.0, 96.0, 80.0, 77.5, 75.0, 72.5, 70.0, 67.5, 65.0, 62.5, 60.0, 57.5, 55.0, 52.5, 50.0, 47.5, 45.0, 42.5, 40.0, 37.5, 35.0, 32.5, 30.0, 27.5, 25.0, 22.5, 20.0, 17.5, 15.0, 12.5, 11.0, 10.0 11: 118.0, 96.0, 80.0, 77.5, 75.0, 72.5, 70.0, 67.5, 65.0, 62.5, 60.0, 57.5, 55.0, 52.5, ...
  • Ricoh FW780 | Service Manual - Page 403
    ... 4.6.12 AC DRIVE BOARD Noise Filter AC Drive Board TB202 TB201 B047S500 WMF Service Remark for 220 ∼ 240 V Version Make sure that the harnesses are connected to the ... noise filter harness neutral line (white wire) white connector to TB202 on ac drive board. SM 4-29 B047/B048 Service Tables
  • Ricoh FW780 | Service Manual - Page 404
    SERVICE REMARKS AC Drive Board TB202 TB201 B047S501.WMF Service Remarks for 120 V Version Make sure that the harness is connected to the ac drive board as shown correctly 1. Set the power supply cord harness hot line (black wire) white connector to TB201 on ac drive board. 2. Set the power ...
  • Ricoh FW780 | Service Manual - Page 405
    REPLACEMENT AND ADJUSTMENT
  • Ricoh FW780 | Service Manual - Page 406
  • Ricoh FW780 | Service Manual - Page 407
    ...reinstalling the gear [F], make sure that the direction of the projection of the gear is on the drum side. 2) When re-installing the bearing holders, make sure.... The mylar seals determine the position between the drum unit and copier side plate. This also helps to ensure an even image density on the ...
  • Ricoh FW780 | Service Manual - Page 408
    FUSING 5.5 FUSING [B] [A] B047R101.WMF 5.5.7 HOT ROLLER THERMISTOR REPLACEMENT 1. Remove the fusing unit. 2. Remove the hot roller thermistor [A] (1 screw, clamps). 5.1.8 FUSING THERMOFUSE REPLACEMENT 1. Remove the fusing unit. 2. Remove the fusing thermofuse [B] (2 screws, 6 clamps, and 2 ...
  • Ricoh FW780 | Service Manual - Page 409
    ... Turn off the main switch. 2. Remove the copier rear cover. 3. Remove the pressure roller thermistor screw... mode, and wait for at least 10 minutes. 6. Using a digital thermometer and probe [B], measure ...find out the current mode), adjust the temperature using SP#-7. 8. Repeat steps 5 to 7 and confirm ...
  • Ricoh FW780 | Service Manual - Page 410
    ...45 (roll feed) Change the start timing of the registration roller using SP#-5, SP#-27, and/or SP#-45 1. Make several copies using manual feed or the roll feeder and check the ... registration is not within the registration tolerance, adjust the registration using SP#-5, SP#-29 and/or SP#-45. ...
  • Ricoh FW780 | Service Manual - Page 411
    TROUBLESHOOTING
  • Ricoh FW780 | Service Manual - Page 412
  • Ricoh FW780 | Service Manual - Page 413
    SERVICE CALL CONDITIONS 6. TROUBLESHOOTING 6.2 SERVICE CALL CONDITIONS When a service call condition occurs, the Call... SP38 from "1" to "0" to clear these. 6.1.1 SC CODE DESCRIPTIONS SC Code E-1: Exposure Lamp Abnormal..., -A14, -B17, -B18) SC Code E-2: Fusing Thermofuse Open Definition After turning...
  • Ricoh FW780 | Service Manual - Page 414
    SERVICE CALL CONDITIONS 11 May, 2001 SC Code E-4: Hot Roller Thermistor Short ...SC Code E-5: Pressure Roller Thermistor Open Definition The resistance of the pressure roller thermistor is more than 0.53... (CN102-A4, -B12, -B13, -B14) SC Code E-7: Fusing Overheat Definition The temperature detected by...
  • Ricoh FW780 | Service Manual - Page 415
    SERVICE CALL CONDITIONS SC Code E-8: Fusing Warm-up Error Definition After turning on the... board (CN103-1, -2) SC Code E-11: Toner Density Sensor Adjustment Error Definition The new developer initialization ... sensor area • Main board (CN105-A5, -A6, -B25, -B26) SM 6-3 B047/B048 Troubleshooting
  • Ricoh FW780 | Service Manual - Page 416
    SERVICE CALL CONDITIONS 11 May, 2001 SC Code E-13: Total Counter Abnormal Definition ... to check • Main switch • Main board SC Code E-17: Unstable Fusing Temperature Definition While in.... Point to Check • The thermistor is out of position SC Code E-18: Fusing Lamp Continuous Light Definition ...
  • Ricoh FW780 | Service Manual - Page 417
    ... sounds. This symptom will occur when all of three fuses are open. U.S.A. Version Fuse No. FU301 FU302 FU303...sounds. This symptom will occur when all of three fuses are open. AC Drive Board Fuse No....power. No power is supplied to the de-humidify heater. No power. SM 6-5 B047/B048 Troubleshooting
  • Ricoh FW780 | Service Manual - Page 418
  • Ricoh FW780 | Service Manual - Page 419
    ROLL FEED UNIT B435/B436
  • Ricoh FW780 | Service Manual - Page 420
  • Ricoh FW780 | Service Manual - Page 421
    SPECIFICATIONS 1. OVERALL MACHINE INFORMATION 1.1 SPECIFICATIONS Roll Paper Size: Width: 210 mm to 914 mm, 81/2"... to 10 extra preset cut lengths can be set using SP23 ~ 32. -Selected Length Cut: 297 mm ...) 60 mm/s Microprocessor +24 volts and +5 volts from the copier Maximum 110 W 1,200 mm x 720 mm x ...
  • Ricoh FW780 | Service Manual - Page 422
    ... reverse side of the Point to Point index (Water proof paper). Name Motors Cutter Roll Feed Function ... the paper length pulse count. Indicates "Door Open" on the operation panel and disables the key operation.... all roll feed unit functions accordance with copier CPU. 49 Others RF Dehumidity Heater 1...
  • Ricoh FW780 | Service Manual - Page 423
    ... B436 Roll feed unit has two roll feed units (1st [A] and 2nd [B]). The cutter unit [C] uses a sliding rotary cutting blade. When turning on the main switch or when roll paper is replenished, the roll feed motor rotates and the leading edge of the roll paper ...
  • Ricoh FW780 | Service Manual - Page 424
    ... reaches the exit rollers [A], the paper is directed to the copier registration roller [B]. The registration roller stops... reaches the proper length, paper feed motor stops and the cutter unit cuts... brake ensures that the very stiff types of paper will not rotate the registration rollers as the excess...
  • Ricoh FW780 | Service Manual - Page 425
    ...paper runs out and the roll paper end sensor detects the black core of the roll,.... In this case, roll end is indicated instead of a paper misfeed indication. 2.1.3 DRIVE MECHANISM [D] [C] [F] [E] [G] [B] [H] B436D102.... [G]. Each feed roller can be driven manually by each knob [H]. SM 7-5 B435/B436 ...
  • Ricoh FW780 | Service Manual - Page 426
    MECHANICAL OPERATION 2.1.4 CUTTER OPERATION [B] [A] [C] B436D104.WMF The cutter unit uses a sliding rotary cutting blade [A] which is pulled past a fixed ...drive wire. The rotary cutting blade allows the cutter unit to cut paper in both directions. There are home position switches [B] at both ends...
  • Ricoh FW780 | Service Manual - Page 427
    ... [D] [F] [A] B436R102.WMF [F] [G] [E] B436R103.WMF 1. Remove the roll feed unit's front cover [A] (2 screws and 4 hooks) and left inner cover [B] (2 screws). Roll Feed Unit B435/B436 2. Remove the left tray lock lever [C] (1 screw and 1 spring) and ...
  • Ricoh FW780 | Service Manual - Page 428
    ROLL FEED LEADING EDGE SENSOR REPLACEMENT 3.2 ROLL FEED LEADING EDGE SENSOR REPLACEMENT [B] [C] [A] [D] B436R107.WMF 1. Pull out the roll feed unit. 2. Remove the sensor casing [A] (2 screws). 3. Replace the leading edge sensor [B] (1 screw and 1 connector). NOTE: When reinstalling the sensor...
  • Ricoh FW780 | Service Manual - Page 429
    ROLL FEED UNIT REMOVAL 3.3 ROLL FEED UNIT REMOVAL [B] [B] [A] B436R101.WMF 1. Pull out the roll feed unit [A]. 2. Remove the 4 screws [B] (right side 2 screws and left side 2 screws). 3. Lift the roll feed unit and place it gently onto the floor or other flat surface. SM 7-9 B435/B436 Roll ...
  • Ricoh FW780 | Service Manual - Page 430
    ...the roll feed unit. 2. Remove the left inner cover. 3. Remove the roll feed paper guide plate [A] (4 screws). 4. Remove the roller knob bracket [B] (1 screw... [J] is set in the cutout [K] of the stopper. 2) After putting all the parts back, turn the roller knob and verify that the ...
  • Ricoh FW780 | Service Manual - Page 431
    ROLL FEED MOTOR REPLACEMENT 3.5 ROLL FEED MOTOR REPLACEMENT [A] [B] 1. Pull out the roll feed unit. 2. Remove the left inner cover. 3. Remove the four screws [A] securing the roll feed motor, then remove the roll feed motor [B] (1 connector). SM 7-11 B435/B436 Roll Feed Unit B435/B436
  • Ricoh FW780 | Service Manual - Page 432
    ... ROLL END SENSOR REPLACEMENT [B] [A] [D] [C] 1. Remove the 2 screws [A] holding the clamps for the power supply cord. 2. Remove the roll feed rear cover [B] (6 screws). 3. Remove the roll end sensor bracket [C] (1 screw and 1 hook). 4. Replace the roll end sensor [D] (1 screw and 1 connector). ...
  • Ricoh FW780 | Service Manual - Page 433
    ... roll feeder is installed to correct cutting errors. The cut error correction data is determined in the factory ... varies depending on the copier on which it is installed and/or paper type used. If required, ... copying because the fusing unit dries the paper and reduces its length temporarily. Preset ...
  • Ricoh FW780 | Service Manual - Page 434
    SIDE REGISTRATION ADJUSTMENT 3.8 SIDE REGISTRATION ADJUSTMENT [A] [B] 1. Raise the lever [A] in the left roll holder [B]. 2. Adjust the roll paper side position. Lower the lever to fix the position. B435/B436 7-14 SM
  • Ricoh FW780 | Service Manual - Page 435
    TECHNICAL SERVICE BULLETINS
  • Ricoh FW780 | Service Manual - Page 436
  • Ricoh FW780 | Service Manual - Page 437
    ... APPLICABLE MODEL: FW740 05/12/95 SUBJECT: PARTS CATALOG UPDATES GENERAL: The following ... shoulde b incorporated into all existing FW740 Parts Catalog documentation. • UPDATE NO. 1 - SPRING ... - OPERATING SHEET - Please add the Operating Sheet to your Parts Catalog as indicated below. REFERENCE ...
  • Ricoh FW780 | Service Manual - Page 438
    TECHNICAL SERVICE BULLETIN CUSTOMER SERVICE GROUP BULLETIN NUMBER: FW740 - 002 10/11/95 APPLICABLE ... ITEM FSM 1 1 1 29 7 UNITS AFFECTED: All FW740 copiers manufactured after Serial Number A3844120069 will ... in OLD machines. 2 NEW machines. OLD parts can be used in OLD and NEW machines. NEW ...
  • Ricoh FW780 | Service Manual - Page 439
    ...intended as master of original for reproduction of additional bulletins. SUBJECT: FIELD SERVICE MANUAL - INSERT GENERAL: The Field Service Manual ... an arrow ⇒ • 1-1 • 4-11 Additional Information Additional Information Developer Type Addition of SP Mode 15 ELECTRICAL PAPER PATH FSM PARTS OTHER
  • Ricoh FW780 | Service Manual - Page 440
    ... automatically turn "OFF" the copier, a new type of Main Switch with an incorporated coil is used. The connector ... Main Switch ELECTRICAL AC Harness Relay PAPER PATH Upper DC Harness t FSM ...page 4-11 of the Field Service Manual with the updated page provided with this package. t PARTS Mode No....
  • Ricoh FW780 | Service Manual - Page 441
    ... set on the feed table A Jam or SC indicator is "ON" The Toner End indicator is "ON" or the Used Toner Bottle is full NOTE: When you use a..., please clear all memory (SP1-21) and input the factory data referring to the Field Service Manual. NOTE: For part numbers, refer to Tech Service Bulletin No. ...
  • Ricoh FW780 | Service Manual - Page 442
    Tech Service Bulletin No. FW740-004 Page 3 of 4 Continued...
  • Ricoh FW780 | Service Manual - Page 443
    Tech Service Bulletin No. FW740-004 Page 4 of 4
  • Ricoh FW780 | Service Manual - Page 444
    ... SERVICE BULLETIN CUSTOMER SERVICE GROUP BULLETIN NUMBER: FW740 - 005 1/26/96 t APPLICABLE MODEL: ... Lower DC Harness Upper DC Harness PAPER PATH NOTE: For more information regarding Energy ... 15 3 5 4 1 7 119* 6* t FSM s PARTS OTHER UNITS AFFECTED: All FW740 copiers manufactured after Serial ...
  • Ricoh FW780 | Service Manual - Page 445
    TECHNICAL SERVICE BULLETIN CUSTOMER SERVICE GROUP BULLETIN NUMBER: FW740 - 005 REISSUE 5 03/20/96 ... Lower DC Harness Upper DC Harness PAPER PATH NOTE: For more information regarding Energy ... 15 3 5 4 1 7 119* 6* t FSM s PARTS OTHER 5 UNITS AFFECTED: All FW740 copiers manufactured after Serial...
  • Ricoh FW780 | Service Manual - Page 446
    ... of original for reproduction of additional bulletins. SUBJECT: FIELD SERVICE MANUAL - INSERT GENERAL: The Field ... Manual page(s) listed below must be replaced with the page(s) supplied. Each bull etin... highlighted by an arrow ⇒ ELECTRICAL • 5-19 Updated Information PAPER PATH FSM PARTS OTHER...
  • Ricoh FW780 | Service Manual - Page 447
    ... 17 27 35 35 40 ITEM 9 38 PAPER PATH 26 1 9 28 14 FSM 7 * UNITS AFFECTED: All FW740 copiers manufactured ...in OLD machines. 2 NEW machines. OLD parts can be used in OLD and NEW machines. ... aft er the S/N cut-in or previously modified, use the new part numbers individually. OTHER Continued...
  • Ricoh FW780 | Service Manual - Page 448
    Tech Service Bulletin No. FW740 - 007 Page 2 of 2 • UPDATE NO. 2 - PARTS CATALOG CORRECTION - Add Spacer (A1634355) to your Parts Catalog as indicated below. Fusing Entrance Guide Plate 20 mm 25 mm Spacer - Fusing Entrance REFERENCE PART NUMBER A163 4355 DESCRIPTION...
  • Ricoh FW780 | Service Manual - Page 449
    ... SERVICE BULLETIN CUSTOMER SERVICE GROUP BULLETIN NUMBER: FW740 - 008 03/20/96 APPLICABLE ... should be incorporated into all existing FW74 0 Parts Catalog documentation. MECHANICAL Left Original Stopper ... Tubes Right Original Stopper PAPER PATH FSM REFERENCE PART NUMBER AA161118 * DENOTES NEW ...
  • Ricoh FW780 | Service Manual - Page 450
    ... SERVICE BULLETIN CUSTOMER SERVICE GROUP BULLETIN NUMBER: FW740 - 009 09/27/96 APPLICABLE... Parts Catalog additions are being issued for all FW740 Parts Catalogs. This informatio n should be incorporated into ... Philips Pan Head Screw Photointeruptor ELECTRICAL PAPER PATH FSM PARTS REFERENCE NEW ...
  • Ricoh FW780 | Service Manual - Page 451
    ... SERVICE BULLETIN CUSTOMER SERVICE GROUP BULLETIN NUMBER: FW740 - 010 09/27/96 APPLICABLE ...to adjust the fusing temperature based on the ype t of copy paper used and the specific environmental conditions in ...65%RH H/H ----- 30°C, 80%RH ELECTRICAL 1. Plain Paper Paper T6200/T6000 Azon Bond Azon ...
  • Ricoh FW780 | Service Manual - Page 452
    Tech Service Bulletin No. FW740 - 010 Page 2 of 2 2. Vellum Paper TA-70 Azon ... the maximum mode for the type of paper, such as Plain Paper, Vellum, or Film using SP #1, SP #2 or... (SP #3) 2. Make 3 white copies with the largest size of the paper available in the vertical grain direction. W hite copy ...
  • Ricoh FW780 | Service Manual - Page 453
    ... than the proper setting for the particular kind of paper. For example, if the proper setting is Mode... areas on the copy using a cotton cloth approximately 5 times. 6. Check whether the toner is peeled... Temperature Setting" back to the original settings. PARTS FIELD SERVICE MANUAL - INSERT The Field...
  • Ricoh FW780 | Service Manual - Page 454
    ... SERVICE BULLETIN CUSTOMER SERVICE GROUP BULLETIN NUMBER: FW740 - 012 10/15/96 ... GENERAL: PHOTOINTERUPTOR The Photointeruptor shown below is missing from the Parts Catalog. This information should be added to all existing FW740 Parts Catalog documentation. MECHANICAL ELECTRICAL PAPER PATH 14 ...
  • Ricoh FW780 | Service Manual - Page 455
    ... added to prevent the Pressure Roller from contacting the Paper Exit Cover when it is bent. NOTE: The proper fusing ... OLD machines. 2 NEW machines. OLD parts can be used in OLD and NEW machines. ... aft er the S/N cut-in or previously modified, use the new part numbers individually. OTHER Continued...
  • Ricoh FW780 | Service Manual - Page 456
    ... Roller Stripper Pressure Roller Stripper Ass'y Stopper Guide - Paper Exit Pressure Roller Stripper Stripper ...* 42* 43* UNITS AFFECTED: All FW740 copiers manufactured after Serial Number A3846060120 will ... Assembly has been registered as a service part. 29 REFERENCE PART NUMBER A1636111 A1636113 * ...
  • Ricoh FW780 | Service Manual - Page 457
    ...additional bulletins. SUBJECT: GENERAL: T/S CORONA UNIT A part number has been assigned to the T/S Corona... be incorporated into all existing FW740 Parts Catalog documentation. ‰ MECHANICAL REFERENCE NEW...) QTY 1 1 PAGE 25 25 ITEM * * ‰ ELECTRICAL ‰ PAPER PATH ‰ FSM „ PARTS ‰ OTHER...
  • Ricoh FW780 | Service Manual - Page 458
    ...following parts for proper operation and/or signs of arching. Replace the parts as necessary. 1. 2. 3. 4. 5. 6. Relay Receptacle - Charge Corona (AD021113). Charge ...and staggered. If the wires cross or touch each other, arcing or copy quality problems may occur. PAPER PATH ‰ SM „ PARTS ‰ OTHER
  • Ricoh FW780 | Service Manual - Page 459
    ... for the A163 series. Bulletin Cross Reference Ricoh Group Companies Last Bulletin No. ...: SPRING REPLACEMENT - CHARGE CORONA UNIT „ PARTS Note: This copy is intended as a master original ... to attach the Spring from above. SOLUTION: The angle on the opening of the Spring has been changed from 45°...
  • Ricoh FW780 | Service Manual - Page 460
    Tech Service Bulletin No. A163 - 001 Page 2 of 2 UNITS AFFECTED: All copiers manufactured after ... parts installed during production. MODEL NAME Gestetner N/A Ricoh FW740 Savin N/A SERIAL NUMBER N/A A3847050073 N/A ... in OLD machines. 2 NEW machines. OLD parts can be used in OLD and NEW machines. NEW ...
  • Ricoh FW780 | Service Manual - Page 461
    .... Auto Shut-Off Time Setting (115 V) PART NO. A1635208 A1635230 DESCRIPTION ROM Main ... Services BBS. NOTE: For more information about the Ricoh Technical Services BBS, order the Guide to Operation (P/N BBS00001) through...in OLD machines. 2 NEW machines. OLD parts can be used in OLD and NEW machines. ...
  • Ricoh FW780 | Service Manual - Page 462
    ...2f% ####6-'3,#h#*;KHN ####7%:-2#h#2f% SUBJECT: SMALL CAP „ PARTS %EJG#g#NNG NKfFFfML Note: This copy is... master original for reproduction of additional bulletins. GENERAL: The part number for the Small Cap (A163 RIC/.../A252) QTY 1 REFERENCE PAGE ITEM 3 19 RICOH GROUP COMPANIES CONTROL NO. 296
  • Ricoh FW780 | Service Manual - Page 463
    ...intended as a master original for reproduction of additional bulletins. SYMPTOM: Paper jams at the Registration Roller. CAUSE: The ground wire is positioned ...powering up the copier. Attach the Long Wire [C] to the copier. Attach the Short Wire [B] to the stand. RICOH GROUP COMPANIES CONTROL NO. ...
  • Ricoh FW780 | Service Manual - Page 464
    ...N/A SUBJECT: SYMPTOMS: 1. Background may appear on the copy. 2. The Used Toner Tank may fill up before ... toner will gradually drop. This may cause excess toner to be supplied to the Development Unit and cause the ....exe (FW740) can be downloaded through the Ricoh Technical Services FTP Site http://tsc....
  • Ricoh FW780 | Service Manual - Page 465
    TECHNICAL SERVICE BULLETIN BULLETIN NUMBER: APPLICABLE MODEL: GESTETNER - N/A RICOH - FW760 SAVIN - N/A SUBJECT: SYMPTOM: When feeding thick paper, the Original Feed Motor ... name A252MA1D.EXE) can be downloaded through the Ricoh Technical Services FTP Site http://tsc.ricohcorp.com....
  • Ricoh FW780 | Service Manual - Page 466
    ... - 007 11/20/2000 APPLICABLE MODEL: MODEL: GESTETNER - NA RICOH - FW740/750/760 SAVIN - NA SUBJECT: GENERAL: SERVICE MANUAL - INSERT Note: This ... Page - STM) Updated Information (Specifications Page - FSM)  2000 RICOH Corporation. All rights reserved. CONTROL NO. 006WID
  • Ricoh FW780 | Service Manual - Page 467
    ... Multi-Copy: Automatic Reset: Photoconductor: Drum Charge: Reproduction Ratio: Exposure System: Exposure Lamp: Development: Toner Replenishment: Toner Consumption... dry toner system (Type 410, 2 bags) Cartridge system (750g toner/cartridge) 1,860 A1 or D copies per cartridge (6% ...
  • Ricoh FW780 | Service Manual - Page 468
    ...-component dry toner system (Type 410, 2 bags) Cartridge system (750g toner/cartridge) 1,860 A1 or D copies per cartridge (6% original)...: Multi-Copy: Automatic Reset: Photoconductor: Drum Charge: Reproduction Ratio: Exposure System: Exposure Lamp: Development: Toner Replenishment: Toner Consumption: ...
  • Ricoh FW780 | Service Manual - Page 469
    ...14 UNITS AFFECTED: All A163/A251/A252 copiers manufactured after the Serial Numbers listed below... Ricoh FW750 Ricoh FW760 Savin SERIAL NUMBER NA Service parts only A7820010001 ... manufactured after the S/N cut-in or previously modified, use the new part numbers individually. Copyright  2002 RICOH...
  • Ricoh FW780 | Service Manual - Page 470
    TECHNICAL SERVICE BULLETIN BULLETIN NUMBER: A163/A251/A252 - 009 03/19/2002 ...master original for reproduction of additional bulletins. SUBJECT: SPACER ! PARTS GENERAL: Please add the following component, which... PAGE ITEM 19 44* Copyright  2002 RICOH Corporation. All rights reserved. CONTROL NO...
  • Ricoh FW780 | Service Manual - Page 471
    TECHNICAL SERVICE BULLETIN BULLETIN NUMBER: A163/A251/A252 - 011 11/05/2003 ...- N/A LANIER - N/A RICOH - FW740/750/760 SAVIN - N/A SUBJECT: LEFT AND RIGHT PAPER GUIDE GENERAL: ... space between each pawl. NOTE: When replacing with the modified parts for the first time, they must be installed together as...
  • Ricoh FW780 | Service Manual - Page 472
    ...PART NO. B0473858 B0473857 DESCRIPTION Left Paper Guide Guide: Paper: T&S Corona: Left Right Paper ...A251/A252 copiers manufactured after the serial numbers listed below will have the new style Guides installed ...FW740 Ricoh FW750 Ricoh FW760 SERIAL NUMBER Service Parts Only Service Parts Only Service...
  • Ricoh FW780 | Service Manual - Page 473
    ...issued for the A571 series. Bulletin Cross Reference Ricoh Group Companies Last Bulletin No.... as a master original for reproduction of additional bulletins. „ PARTS The following part correction is being issued for the A571...) QTY 1 REFERENCE PAGE ITEM 3 19 RICOH GROUP COMPANIES CONTROL NO. 304...
  • Ricoh FW780 | Service Manual - Page 474
    ...LGJ g NNE    U    h f   h    (14 KJN    h f SUBJECT: GENERAL: The following parts updates are being issued for all A836 ...PART NO. A8364465 A8364468 A1744493 NEW PART NO. A86364469 DESCRIPTION Rear Copy ... PAGE ITEM 3 16 3 19 3 20 RICOH GROUP COMPANIES CONTROL NO. 314...
  • Ricoh FW780 | Service Manual - Page 475
    ...APPLICABLE MODEL: MODEL: GESTETNER - NA RICOH - FW770/FW780 SAVIN - NA SUBJECT: ORIGINAL ... for reproduction of additional bulletins. ! GENERAL: The following parts corrections are being issued for all B047/B048 ... Optics (B048) 25 Copyright  2002 RICOH Corporation. All rights reserved. CONTROL ...
  • Ricoh FW780 | Service Manual - Page 476
    ...APPLICABLE MODEL: MODEL: GESTETNER - NA RICOH - FW770/FW780 SAVIN - NA SUBJECT: GENERAL:... original for reproduction of additional bulletins. ! SERVICE MANUAL The Service Manual pages listed below ... the revised areas ⇒. PAGES: • 4-25 Jam Code Table (Updated Information). Copyright  2002 ...
  • Ricoh FW780 | Service Manual - Page 477
  • Ricoh FW780 | Service Manual - Page 478
    ... A040/A041 LANIER - LW110/LW111 RICOH - FW770/FW780 SAVIN - 7700W/7800W SUBJECT: TONER HOPPER JOINT SHAFT ... part, disassemble the unit and clean it immediately. If the developer were to remain in the assembly, it would cause joint operation problems due to excessive mechanical load and parts wear. ...
  • Ricoh FW780 | Service Manual - Page 479
    ... Bulletin No. B047/B048 - 003 OLD PART NO. AD001036 A1633147 NEW ... Hopper Joint Shaft Unit - Toner Hopper Seal - 22x52x0.5 Spring - 10N QTY ...). UNITS AFFECTED: All B047/B048 copiers manufactured after the serial numbers listed ... A040 SAVIN 7700W Lanier LW110 RICOH FW780 Gestetner A040 SAVIN 7800W ...
  • Ricoh FW780 | Service Manual - Page 480
    ...- A040/A041 LANIER - LW110/LW111 RICOH - FW770/FW780 SAVIN - 7700W/7800W SUBJECT: RECEIVING...parts list and the illustration as shown below. The following parts corrections are being issued for all B047/B048 Parts... PAGE ITEM 7 12 7 104 Copyright  2003 RICOH Corporation. All rights reserved. Page 1...
  • Ricoh FW780 | Service Manual - Page 481
    ... - A040/A041 LANIER - LW110/LW111 RICOH - FW770/FW780 SAVIN - 7700W/7800W SUBJECT: FAN ... part update is being issued for all B047/B048 Parts Catalogs. PART NO. A1744203 CORRECT DESCRIPTION SEAL:FAN:... 1 REFERENCE PAGE ITEM 17 18 Copyright  2004 RICOH Corporation. All rights reserved. Page 1 of ...



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Ricoh FW780 Manual