Sharp FO-2970M Service Manual
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- Sharp FO-2970M | Service Manual - Page 1
FO-2970MU SERVICE MANUAL No. 00ZFO2970USME FACSIMILE MODEL FO-2970M SELECTION CODE U DESTINATION U.S.A. Chapters 1, 3, 7 and 8 of this manual are omitted because they are partly common to the FO-2950MU. Please refer to previous service manual UX-4000MU/FO-2950MU/C (00ZUX4000USME) for these - Sharp FO-2970M | Service Manual - Page 2
to the service manual of FO-2950MU [5] Refer to the service manual of FO-2950MU [6] Refer to the service manual of FO-2950MU [7] Refer to the service manual of FO-2950MU CHAPTER 2. ADJUSTMENTS [1] Adjustments 2-1 [2] Diagnostics and service soft switches 2-4 [3] Troubleshooting 2-27 [4] Error - Sharp FO-2970M | Service Manual - Page 3
Automatic fallback to lower speeds. Transmission time* Approx. 3 seconds Toner cartridge yield (4% page coverage, letter paper) Initial starter cartridge (included with fax machine): Approx. 1,875 pages Replacement cartridge (FO-29ND): Approx. 3,750 pages Drum cartridge yield Initial starter - Sharp FO-2970M | Service Manual - Page 4
. At any other time, press this key to print out the Help List, a quick reference guide to the operation of your fax machine. 20 HOLD/SEARCH key When dialing, press this key to search for an auto-dial fax number. During a phone conversation, press this key to put the other party on hold. 21 - Sharp FO-2970M | Service Manual - Page 5
voltage (FACTORY ONLY) 1. Install the power supply unit in the machine. 2. Set the recording paper and document. 3. When the document voltage check - • Capacitor: 1000pF/3KV (VCKYQY3FB102K) • Diode: SHV-03 (VHDSHV03///-1) FO-2970MU Output +5V +24VH +24V* Voltage limits 4.75V~5.25V 23.04V~24.96V - Sharp FO-2970M | Service Manual - Page 6
FO-2970MU 2 DC bias output voltage adjustment Adjust VR2 so that the output voltage is -310V ±5V For measurement, use the high voltage tester (effective value - Sharp FO-2970M | Service Manual - Page 7
MODE (Soft Switch No. SW2 DATA No. 1) Use this to set the fax machine to the type of telephone line you are on. • The factory setting is : PULSE SELECTED (step 4) End, using the "STOP" key. KEY: STOP FO-2970MU CNRTH CNFUSE F100 CNMT IC6 CNPRT CNPN CNCIS CNLIUA CNSP CNLIUB Control PWB (Bottom - Sharp FO-2970M | Service Manual - Page 8
FO-2970MU [2] Diagnostics and service soft switches 1. Operating procedure Two kinds of diagnoses are supported. 1-1. Fax diagnosis This diagnosis is concerned with the main body of fax which is used for production and service support. Entering the diagnostic mode Press FUNC 9 8 7 , and the - Sharp FO-2970M | Service Manual - Page 9
FO-2970MU 2. Diagnostic items description 2-1. Fax diagnosis 1) Soft switch mode The soft will be complete. 7) Signal send mode This mode is used to send various signals to the circuit during FAX communication. Every push of START key sends a signal in the following sequence. [ 1] No signals (CML- - Sharp FO-2970M | Service Manual - Page 10
FO-2970MU 9) Auto feeder mode The auto feed function can be checked by inserting and discharging the document. (After entering this mode, when a document is placed in the machine set The function is used to simplify the registration of FAX/TEL No. during 1aging. The diagnosis mode is activated. - Sharp FO-2970M | Service Manual - Page 11
0 0 1 2 3 L I FE1=000123 key L I FE2=000123 L I FE3=000123 FEEDER L F= 0 0 0 1 2 3 TONER L F = 0 0 0 1 2 3 The cursor blinks at the top data. Seven counters can be selected with the "#" and " or cleared in addition to the ordinary memory clear. FO-2970MU Rapid key 07: Life all clear The mode - Sharp FO-2970M | Service Manual - Page 12
FO-2970MU Rapid key 10: Life clear mode The mode is used NE L F C L EAR DRUM L I F E C L E AR # key L I FE1 CLEAR key L I FE2 CLEAR L I FE3 CLEAR FEEDER LF CLEAR TONER L I F E C L EAR 2 1 In the state of , select the counter value you want to clear using the "#" key or the " " key, and then - Sharp FO-2970M | Service Manual - Page 13
the following key entries in sequence. Press FUNCTION 9 8 7 START 0 1 START FO-2970MU SFT S W 1 = 0 0 0 0 0 0 0 0 SFT S W 1 = 1 0 0 0 0 0 0 0 SFT S W 1 = 1 0 0 0 0 0 0 0 SFT S W 1 = 1 0 0 0 0 0 0 0 SFT S W 1 = 1 0 0 0 0 0 0 0 SFT S W 2 = 0 0 0 0 0 0 0 0 S F T S W 65 = 0 0 0 0 0 0 0 0 Press - Sharp FO-2970M | Service Manual - Page 14
FO-2970MU 4. Soft switch description • Soft switch SW DATA NO. NO. ITEM 1 Recall interval 2 3 4 SW1 5 Recall times 6 7 8 1 Dial mode 2 Reception mode 3 ECM mode 4 CNG detection in stand-by mode SW2 5 Polling security 6 Automatic cover sheet 7 Junk fax function in manual reception 8 - Sharp FO-2970M | Service Manual - Page 15
detection timer (Distinctive ring setting off only) Distinctive ringing setting Factory setting : OFF FO-2970MU Switch setting and function 1 0 Initial setting Remarks No Yes 0 Yes No (depends on remote machine) 0 0 0 V.17 V. 29 V. 27ter 14400 12000 9600 7200 9600 7200 4800 2400 No - Sharp FO-2970M | Service Manual - Page 16
FO-2970MU SW DATA NO. NO. ITEM End buzzer 1 2 3 Communication error treatment in RTN sending mode (reception) SW11 4 CNG transmission after auto dialing 5 Error criterion 6 Pulse to tone change by key 7 CNG transmission in manual transmission 8 Reserved 1 DTMF signal transmission level - Sharp FO-2970M | Service Manual - Page 17
FO-2970MU SW DATA NO. NO. ITEM 1 2 3 4 SW16 5 6 7 8 1 2 3 4 SW17 5 6 7 8 1 2 3 4 SW18 5 0 1 Off High Middle Low 0 0 1 1 0 1 0 1 Off High Low Low 0 0 1 1 0 1 0 1 FAX No Cannot change Yes Automatic printout Off Fine No. 1 No. 2 No. 3 No. 4 Normal 0 0 Normal 0 0 PC Yes - Sharp FO-2970M | Service Manual - Page 18
FO-2970MU SW DATA NO. NO. 1 2 3 4 SW21 5 6 7 8 1 2 3 4 SW22 5 6 7 8 1 2 3 SW23 4 5 6 7 8 1 2 3 SW24 4 5 6 7 8 1 2 3 4 SW25 5 6 7 pulses No. 7 0 0 1 1 No. 8 0 1 0 1 TAD connect Yes No Fax switching when A.M. full Yes No Selection time of quiet detection 30 sec 40 sec 50 sec 60 sec - Sharp FO-2970M | Service Manual - Page 19
6 Reserved 7 Reserved 8 Reserved Switch setting and function 1 0 Binary input 8421 No. = 1 2 3 4 0 1 0 0 (4 sec) Binary input No. = 8421 5678 0 1 0 1 (5 sec) FO-2970MU Initial setting 0 1 0 0 0 1 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Remarks OPTION 2 - 15 - Sharp FO-2970M | Service Manual - Page 20
FO-2970MU SW DATA NO. NO. 1 2 3 4 SW32 5 6 7 8 1 2 3 4 SW33 5 6 7 8 1 2 3 4 SW34 5 6 7 8 1 2 3 4 SW35 5 6 7 8 1 2 3 4 SW36 5 6 7 8 1 2 3 4 SW37 5 6 7 8 1 2 3 4 SW38 5 6 7 8 Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved - Sharp FO-2970M | Service Manual - Page 21
Reserved 1 Reserved 2 Reserved 3 Reserved 4 Reserved SW45 5 Reserved 6 Reserved 7 Reserved 8 Reserved ITEM Switch setting and function 1 0 2 - 17 FO-2970MU Initial setting 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Remarks - Sharp FO-2970M | Service Manual - Page 22
FO-2970MU SW DATA NO. NO. 1 Reserved 2 Reserved 3 Reserved 4 Reserved SW46 5 Reserved 6 Reserved 7 Reserved 8 Reserved 1 Reserved 2 Reserved 3 Reserved 4 Reserved SW47 5 Reserved 6 Reserved 7 Reserved 8 Reserved 1 Reserved 2 Reserved 3 - Sharp FO-2970M | Service Manual - Page 23
0. 33600 (bps) is set for N = 15. V.34 mode function in case of manual communication On Off V.34 mode function On Off V.34 control channel communication speed 2400 bps 1200 Reserved Reserved Reserved Reserved Reserved Reserved Reserved 2 - 19 FO-2970MU Initial setting 0 0 1 0 0 0 - Sharp FO-2970M | Service Manual - Page 24
FO-2970MU SW DATA NO. NO. 1 Reserved 2 Reserved 3 Reserved 4 Reserved SW60 5 Reserved 6 Reserved 7 Reserved 8 Reserved 1 Reserved 2 Reserved 3 Reserved 4 Reserved SW61 5 Reserved 6 Reserved 7 Reserved 8 Reserved 1 Reserved 2 Reserved 3 - Sharp FO-2970M | Service Manual - Page 25
FO-2970MU • Soft switch function description SW1 No. 1 ~ No. 4 Recall interval Choice fax function in manual reception It is set whether JUNK-FAX is functioned in the manual receiving mode or not. SW2 No. 8 Anti junk fax function This function is used to receive data from a specific remote machine - Sharp FO-2970M | Service Manual - Page 26
FO CSI signal contains the sender's phone number registered in the machine. If this switch is set to "1", no sender's problem, if set to 1. SW7 No. 5 EOL detect timer 25 seconds or 13 seconds are selected for the detection timer of EOL (end of line). This is effective against communication trouble - Sharp FO-2970M | Service Manual - Page 27
5S 3S 0.25S 0.25S 0.25S 0.2S 0.2S 0.25S 0.25S 4.8S 0.2S 5.3S FO-2970MU SW11 No. 1, No. 2 End buzzer The sounding length of the buzzer for normal from the SW11 No. 7 CNG transmission in manual transmission CNG signal sending ON/OFF in case of manual transmission is set. SW11 No. 8 Reserved - Sharp FO-2970M | Service Manual - Page 28
FO-2970MU SW17 No. 1, No. 2 Speaker volume (3 stages) Used to adjust sound volume from a speaker not pressed. In the copy mode, however, the fine mode is automatically selected unless the Resolution key is manually set to another mode. SW19 No. 1 , No. 2 Density adjustment (when Fine/STD mode) This - Sharp FO-2970M | Service Manual - Page 29
status is detected for a certain period of time, the machine judges it as a transmission from a facsimile machine and automatically switches to the FAX mode. SW27 No. 5 ~ No. 8 Quiet detect start Set to "0". SW48 No. 1 ~ No.8 Reserved Set to "0". SW49 No. 1 Reserved Set to "1". 2 - 25 FO-2970MU - Sharp FO-2970M | Service Manual - Page 30
FO-2970MU SW49 No. 2 ~ No.8 Reserved Set to "0". SW59 No. 5 ~ No. 8 Reserved Set to "0". SW50 communication method is V.34 reception mode. SW55 No. 1 V.34 mode function in case of manual communication Used to select whether the V.34 mode is made valid when automatically transmitting/receiving. - Sharp FO-2970M | Service Manual - Page 31
dialing / Manual dialing / Others % ROM version: Our customer B1 B2 Other party Comment A1 A2 C1 D2 C2 E1 D1 E2 Our service Other party's service Tel No. Fax No. Model name Tel No. Fax No. Model name Phase: A. B. C. D. Ref.No.: Date: Please mark problem with an X No problem is - Sharp FO-2970M | Service Manual - Page 32
FO-2970MU [4] Error code table 1. Communication error code table G3 Transmission Code 0 Final page or physical page reception. Error occurred after or during inquiry from the remote (transmitting) machine as to whether reception is possible or not. Error occurred during or just after fallback. - Sharp FO-2970M | Service Manual - Page 33
error in V.34 line probing procedure E-31 Handshaking error in V.34 HDX training procedure FO-2970MU 2. Service call error massage The following service call errors may occur in FO-2970MU. Message 1 POLYGON ERROR 2 HEATER ERROR 3 HEATER HIGH ERROR 4 HEATER LOW ERROR Description Cause - Sharp FO-2970M | Service Manual - Page 34
FO-2970MU CHAPTER 4. DIAGRAMS [1] Block diagram 4 - 1 THERMISTER CNRTH ROM 8M bit TEL/LIU PWB CNLIU MODEM 33.6k bps CIS CABLE PERSONAL COMPUTER FAN MOTOR CNFM CNPW HEATER LAMP CNHT POWER PWB PRINTER PWB CNPL CNTNR PICK UP SOLENOID TONER SENSOR CNMMT PAPER FEED MOTOR CNLSU LASER UNIT - Sharp FO-2970M | Service Manual - Page 35
PRINTER MOTOR 4 LASER AUTO POWER SCANING MOTOR 5 CONTROL PWB 9 BEAM DETECTOR PWB 3 PC LSU UNIT TONER SENSOR 5 PICKUP SOLENOID 2 36 CNPL CNTNR CNLSU CNMMT CNMT CNPN FO-2970MU CN101 CNPW SPEAKER CIS 2 7 CNCIS CONTROL PWB CNSP 12 FJ HANDSET CNLIUA CNLIUA CNPRT 50 CNPRT - Sharp FO-2970M | Service Manual - Page 36
FO-2970MU [3] Point- to-point diagram and connector signal name 4 - 3 PICK UP SOLENOID PRINTER MOTOR LSU UNIT TONER SENSOR PC FAN MOTOR CNPL 1 +24V 2 5V 4 RS 5 E 6 LD0 7 LD1 8 LD2 9 LD3 10 P-CHK 11 TONER 12 PC IN USE 13 TEL LINE 14 FRTSNS 15 ORGSNS 16 SEN0 17 SEN1 18 SEN2 - Sharp FO-2970M | Service Manual - Page 37
UP SOLENOID PRINTER MOTOR TONER SENSOR LINE CABLE TEL the LCD display. FO-2970MU 3. Operational manual and automatic. Depression of the START key in the off-hook mode in the case of manual modem interface of the 1 fax CPU(SH2) which is COPY key is pressed when the machine is in stand-by with a - Sharp FO-2970M | Service Manual - Page 38
FO-2970MU [2] Circuit space and dedicated circuitry optimized for facsimile image processing and facsimile machine control and monitoring. PB0/A16 PB1/A17 PB2/IRQ0/POE0/ DIRECT MEMORY ACCESS CONTROLLER INTERRUPT ,, CONTROLLER USER BREAK BUS STATE CONTROLLER SERIAL COMMUNICATION INTERFACE - Sharp FO-2970M | Service Manual - Page 39
FO-2970MU SH7041 (IC5) Terminal descriptions Classification Code Terminal No. I/O Name this terminal, power-on-reset condition is attained. MRES 144 I Manual reset When applying low level to this terminal, manual reset condition is obtained. WDTOVF 44 O Watch dog timer overflow - Sharp FO-2970M | Service Manual - Page 40
FO-2970MU SH7041 (IC5) Terminal descriptions Classification Code Terminal No. I/O Name Function Data bus D0 ~ D15 (QFP-112) D0 ~ D31 (QFP-144) 45,46 56~60, - Sharp FO-2970M | Service Manual - Page 41
FO-2970MU SH7041 (IC5) Terminal descriptions Classification Code Terminal No. I/O Name Function Serial TxD0, 131, O Transmitting data Output terminal for transmitting data of SC10 to 1. communication - Sharp FO-2970M | Service Manual - Page 42
FO-2970MU (2) Panel control block The following controls are performed by the Gate IEEE 1284 i/f for PC scanning and PC fax. 6 Sending motor control This function outputs the sending motor control signals of 2 or 1-2 phase excitation to the motor driver. 7 Buzzer and Ringer control This function - Sharp FO-2970M | Service Manual - Page 43
128 129 130 131 132 133 134 135 136 137 I/O OR OR OR - OR OR OR IOR IOR IOR IOR - - - - OSC3M OSCI IU IS O O O O O O O - O O O O O O O - O O O O O I O O ICS O - FO-2970MU Signal name PA3 PA4 PA5 GND PA6 PA7 PA8 PD4 PD5 PD6 PD7 VDD VDD GND GND PEPCKO PEPCKI EXINT1Z RESETZ PCASZ PWRZ PRASZ - Sharp FO-2970M | Service Manual - Page 44
FO-2970MU LR38784A (IC15) Terminal description Pin No. I/O 138 - Signal name VDD Pin No. I/O 184 IOR 139 IOR 140 IOR 141 I 142 I MA MB DOPZ PINZ - Sharp FO-2970M | Service Manual - Page 45
Main motor Motor driver Heater lamp control circuit Driver Thermistor High voltage generating circuit Driver Driver Solenoid PUS Driver CPU (SH7041) correction of fusing temperature and high voltage output 5 - 9 FO-2970MU Laser scanning unit Laser start position sensor Laser diode - Sharp FO-2970M | Service Manual - Page 46
FO-2970MU 3) Unit control a. Main motor drive circuit This machine uses the 4-phase pulse motor, and figure below. CONTROL PWB PRINTER PWB CPU (SH7041) 116 MA 60 MEN137 MB 13 7,14 8 1 IC2 17 Motor 4 driver 2 CNMMT 1 MA 2 MA3 MB 4 MB- ASIC (LR38784A) 130 PUS 142 PIN- 143 POUT- +24V 4 IC1 - Sharp FO-2970M | Service Manual - Page 47
C20 from a filter circuit which dulls the waveform of PWMSIN signal. e. Electrical connection CONTROL PWB PRINTER PWB ASIC IC15 (LR38784A) 131 MC ON 5 12 Q7 Driver IC1 129 TC/Bias ON 3 14 Q3 Q9 Q8 +24VP T2 Transformer +24VP Q5 T1 Transformer Q6 CPU (SH7041) 115 PW MSIN Q4 CNPRT Fig - Sharp FO-2970M | Service Manual - Page 48
FO-2970MU f. Laser scanning unit This unit controls the laser beam power and laser beam scanning. The control is performed with the signals inputted outputted to - Sharp FO-2970M | Service Manual - Page 49
outputted only when the LEND process for controlling the print left margin is made and when the print image is drawn on the photoconductor. FO-2970MU • Laser control signal LEND signal is controlled based on HSYNC signal. For simultaneous APC control, SAMP signal is also controlled. These timings - Sharp FO-2970M | Service Manual - Page 50
FO-2970MU g. Electrical connection ASIC (LR38784A) CONTROL PWB 136 SAMP 146 VIDEO 135 SYNC134 APCSTT 133 PMD- PRINTER PWB +24V CNLSU 1 +24V 2 DG 3 VIDEO 4 SAMP 5 SYNC6 - Sharp FO-2970M | Service Manual - Page 51
at 155 °C. (Heater OFF over 155 °C. Heater ON below 155 °C. FO-2970MU • After printing, temperature is not controlled. • Fan motor starts revolving time should be within 28 seconds. In case of the base machine printing (Single sheet continuous printing) 120s 155°C Printing finished HLON - Sharp FO-2970M | Service Manual - Page 52
FO- PRINTER PWB CNPW POWER PWB ASIC (LR38784A) 131 HLON 2 IC1 15 HLON- 127 PWRLY 1 Driver 16 PWRLY- CPU (SH7041) 118 RTH +5V CNRTH 1 +5V 2 RTH +24VS +24V 155°C. Two temperature fuses are provided to protect the heat machine from an abnormally high temperature in the fusing section. The heater - Sharp FO-2970M | Service Manual - Page 53
POUT 0.54 OFF Cleaning OFF 3.0 OFF 68% DC ON 0.5 OFF OFF OFF DREADY DPAGE After rotation of printing STOP Fig. 18 FO-2970MU Continuous printing processing *1 Waiting according to fixing temperature (Environmental temperature) *2 Top margin READY DPAGE VSYNC PRSTT MM 3.5 PMD APCSTT LEND - Sharp FO-2970M | Service Manual - Page 54
FO - 0.45 = 20.5178 mm) following PIN On detection. The base machine resolution in the sub-scanning direction is 391.16 dpi; If the value is packaged in a 100-pin PQFP. 2) FEATURES • Two-wire, half-duplex fax modem that supports transmission/recep tion speeds up to 33,600bps - V.17, V.27ter, V.29, - Sharp FO-2970M | Service Manual - Page 55
FO-2970MU FM336 (IC8) Terminal description PIN Signal Name I/O Type Interface 3 1 RESERVED 2 RS2 3 RS3 -- IA Host interface IA Host interface 4 RS4 5 /CS 6 /WR IA Host interface - Sharp FO-2970M | Service Manual - Page 56
FO-2970MU (5) Image signal process block CIS VIDEO SIGNAL CLOCK VREF+ VREF- LC82103 (IC4) Fig. 22 LOCAL BUS ASIC The CIS is driven by the LSI ( - Sharp FO-2970M | Service Manual - Page 57
1:HIGH SPEAKER SP MUTE (H:MUTE) BZCONT 0:LINE 1:BZ CI +5VA +24VA DG HOOK-SW PWB Fig. 23 FO-2970MU SIGTX SIXGRX IC8 MODEM(FM336) SPKR BZCONT BZOUT MIC MUTE RCVOL VOL C VOL B VOL A SP MUTE connection to the matching transformer T1 while the FAX or built-in telephone is being used. 5 - 21 - Sharp FO-2970M | Service Manual - Page 58
FO-2970MU 5) Matching transformer The matching transformer performs electrical insulation from the telephone line and impedance matching for transmitting the TEL/FAX (The circuit is located in the control PWB.) RCVOL H L L Set the line driver of MODEM (FM336) to - 6 dBm VOL A VOL B VOL C (The - Sharp FO-2970M | Service Manual - Page 59
(Example: Fax signal send) LIU PWB HS CML CONTROL PWB GAIN -C LINE EXT. HS DETECTOR CML H L CI DETECTOR TEL MUTE (H:MUTE) RX TX TXOUT RXIN 0:CID 1:RX TEL IN TELOUT 0:MID 1:HIGH SPEAKER SP MUTE (H:MUTE) BZCONT 0:LINE 1:BZ CI +5VA +24VA DG HOOK-SW PWB Fig. 24 FO-2970MU SIGTX - Sharp FO-2970M | Service Manual - Page 60
FO-2970MU F1 CN1 AC IN NOISE FILTER CIRCUIT RECTIFIED SMOOTHING CIRCUIT SWITCHING CIRCUIT T1 TRANSFORMER +5V CIRCUIT +24V CIRCUIT +5V +24VH SW101 +24V ZERO CROSS - Sharp FO-2970M | Service Manual - Page 61
1 TP107 BZCONT 3 R339 0 E DG ZC (9-4I) C324 N.M. DG F 0.1 x 9 G C37 C221 C180 C181 C160 C24 C25 C157 C179 1 H I (9-5E) (6-3F) CHAPTER 6. CIRCUIT SCHEMATICS AND PARTS LAYOUT FO-2970MU - Sharp FO-2970M | Service Manual - Page 62
VBAT RTCDT 10K RTCCK 10K 7 DATA 6 CLK XT 3 XTN 2 C305 10P RTCCE RTCIO 5 CE 1 INTN VCC 8 VSS 4 C291 0.1 1 R292 R293 N.M. 4.7K DG DG F G H I /RAS (1-4B) FO-2970MU - Sharp FO-2970M | Service Manual - Page 63
+5V 12 N.C. VCC 6 C254 C253 C250 0.1 0.1 0.1 15 N.C. 16 N.C. 32 N.C. VCC 21 VSS 42 C44 C365 0.1 0.1 VSS 37 C366 1 DG VSS 22 0.1 1M x 16bit DRAM DG FO-2970MU 6 - 3 A B C D E F G H I - Sharp FO-2970M | Service Manual - Page 64
FO-2970MU 6 - 4 A B Reading block 6 5 +5VR +5VR R340 2.2K R186 N.M. N.M. R116 2.2K R331 E B Q100 2SA1037K C 4 (9-5C) AO E DG B Q101 2SA1037K C D105 DA204K DG +5VR DG 3 2 1 C D R332 0 IC18B - Sharp FO-2970M | Service Manual - Page 65
A B C D E F G H I FO-2970MU 6 - 5 Modem block 6 +3.3V C45 0.1 C46 0.1 C47 0.1 C48 0.1 C371 0.1 +5V C49 0.1 DG C376 0.1 +5VA L101 C57 1 10 2 22/50 C50 0.1 C51 0.1 C52 0.1 DG 5 IC8 FM336 33600 bps FAX MODEM 38 VDD 50 VDD 71 VGG 69 VDD1 63 VDD1 13 VDD1 57 VDD1 84 VDD1 92 VDD1 - Sharp FO-2970M | Service Manual - Page 66
FO-2970MU C56 N.M. 6 - 6 A B C D E F G H I Analog block 6/9 6 +5VA2 C391 1000P R394 C (9-5A) TEL OUT 1K B Q105 2SC2412 R387 10K IC1A Q104 E +24VA NJM2902M DTC114 C (1-1D) MIC MUTE B C392 E N.M - Sharp FO-2970M | Service Manual - Page 67
C350 6 - 7 A B C Reset/Driver block 6 C323 N.M. +5V SW1 (1-5B) MRES 5 C407 1000P C228 1 1 M/R 2 SUB 3 GND VCC 5 VOUT 4 R241 1K N.M. C408 0.1 DG +5VPN DG R368 0 R369 0 R351 0 R296 FG4 FG3 FG2 FG1 0 DG R209 R210 R211 N.M. MG A B C D E F G H I 7/9 6 5 4 3 2 1 I FO-2970MU - Sharp FO-2970M | Service Manual - Page 68
FO-2970MU C251 C252 C119 6 - 8 A B C D E F G Other block 6 +5V (1-5I) A[21:0] 5 4 3 (1-6I) D[15:0] 2 1 5678 5678 5678 5678 5678 BR1 10K x 4 BR27 10K x 4 BR21 10K x 4 R270 10K BR14 - Sharp FO-2970M | Service Manual - Page 69
/SEN4 /B4SNS (2-2A) (2-3A) (2-6E) C257 B2B-PH-K-R C258 N.M. R306 20K B2B-PH-K-S C20 47/16 C307 C326 1 B22B-PHDSS-B DG 0.1 56P DG 1 DG N.M. 6 - 9 FO-2970MU C208 1 C237 1 C209 1 C238 2200P C210 2200P C241 1000P C211 1000P C242 1000P C212 1000P C243 1000P C213 2200P C236 1 C207 C235 C206 - Sharp FO-2970M | Service Manual - Page 70
FO-2970MU Control PWB parts layout (Top side) 6 - 10 - Sharp FO-2970M | Service Manual - Page 71
Control PWB parts layout (Bottom side) FO-2970MU 6 - 11 - Sharp FO-2970M | Service Manual - Page 72
FO-2970MU D4 D3 6 - 12 A B C D E F G [2] TEL/LIU and Hook SW PWB circuit ZD1 6 RD2.2FB2 MJ1-3 TIP AR1 RA-391P-V6-2 MJ1-4 RING 1 VA1 ERZVA5D471 5 2 L2 R- - Sharp FO-2970M | Service Manual - Page 73
TEL/LIU and Hook SW PWB parts layout (Top side) FO-2970MU 6 - 13 - Sharp FO-2970M | Service Manual - Page 74
FO-2970MU TEL/LIU and Hook SW PWB parts layout (Bottom side) 6 - 14 - Sharp FO-2970M | Service Manual - Page 75
Q9 2SD1264 1 2 680 R34 5 VBB 11 LOGIC SPLY 15 VREF 9 RC2 12 RC1 IC2 A2918SWH ENABLE1 14 ENABLE2 7 MOTOR DRIVER IN1 13 IN2 8 6 R12 10K MEN (2-4C) MA (2-4C) MB (2-4C) C11 330P R19 20K C9 330P R18 +24VP (2-2C) ZC 11 +24V 12 ZC 9176B-12L-TL 1 DG MG FO-2970MU A B C D E F G H I - Sharp FO-2970M | Service Manual - Page 76
FO-2970MU A B C D E F G H I 6 - 16 Printer PWB circuit CNLSU 6 +24V 1 DG 2 VIDEO 3 SAMP 4 SYNC 5 APCSTT 6 PMCLK 7 PMD 8 PE 9 00 6216 009 100 808(9PIN) C38 390P +24V C47 - Sharp FO-2970M | Service Manual - Page 77
Printer PWB parts layout FO-2970MU 6 - 17 - Sharp FO-2970M | Service Manual - Page 78
FO-2970MU A B C D E F G H I [4] Power supply PWB circuit 6 1/1 6 CN1 NEUTRAL 3 5 C5 TRA1 C22 R23 R20 PC2 ZC R21 R1 C1 C2 (OPTION) CN2 3 1 LIVE F1 1 F2 Z1 RL1 - Sharp FO-2970M | Service Manual - Page 79
FO-2970MU Power supply PWB parts layout CN1 C1 D13 R2 D12 C15 C5 1 C3 NTC1 Z1 L1 F2 C2 R1 R5 C11 R10 R16 R101 - Sharp FO-2970M | Service Manual - Page 80
FO-2970MU 6 - 20 A B C D [5] Operation panel PWB circuit 6 CNPN-17 SEN0 1 2 3 CNPN-18 SEN1 4 CNPN-22 B4SNS N.M. DG CNPN-12 TONER CNPN-11 P-CHK Q2 DTC114ES Q1 DG DTC114ES Q3 (TONER) 2 1 LED2 RED R2 220 +5V (P-CHK) 2 1 LED1 RED R1 220 (TEL/FAX) 2 1 LED4 GREEN R6 220 - Sharp FO-2970M | Service Manual - Page 81
PARTS GUIDE FO-2970MU MODEL FO-2970M SELECTION CODE U DESTINATION U.S.A. CONTENTS 1 Cabinet, etc. 9 Fusing unit 2 Operation panel unit 10 Packing material & Accessories 3 Document guide upper unit 11 Control PWB unit 4 Drive unit 12 TEL/LIU and Hook SW PWB unit 5 Scanner frame unit 13 - Sharp FO-2970M | Service Manual - Page 82
FO-2970MU [1] Cabinet, etc. B1 35 B1 B1 36 8 28 31 B6 27 30 32 33 B2 47 45 34 B4 B4 14 23 B1 B4 Printer unit B3 B3 B5 48 24 29 41 B1 B5 B8 B1 25 B7 B1 B1 5 38 B1 12 18 20 B3 B3 Document guide B1 upper unit 2 4 1 B4 6 5 37 39 11 B1 3 B1 17 9 - 1 - - Sharp FO-2970M | Service Manual - Page 83
Control PWB unit E TEL/LIU and Hook SW PWB unit C Hook switch lever D Upper cabinet C Document guide lower D Bottom cabinet D Inner cabinet D Back cover C SW spacer C Decoration panel C Stopper bracket, 3x30) C Screw(3x8) C Screw(3x12) C Screw(3x6) C Screw(2x6) C Screw(3x8) C Screw FO-2970MU - 2 - - Sharp FO-2970M | Service Manual - Page 84
FO-2970MU [2] Operation panel unit 3 68 901 9 2 5 7 4 10 1 B1 B1 12 B1 11 B1 [3] Document guide upper unit 14 10 15 4 10 6 14 12 B2 B2 16 2 B2 13 6 7 9 B1 5 17 3 11 8 21 1 - 3 - 19 11 8 21 18 1 20 - Sharp FO-2970M | Service Manual - Page 85
key C Panel cable C FR sensor switch C ORG sensor switch C Screw(2x6) E Operation panel unit FO-2970MU [3] Document guide upper unit 1 LANGF2827SCZZ 2 LPLTG2707XHZZ 3 LPLTM3090SCZZ 4 LPLTP2790XHZZ 5 QCNW-285ASCZZ 6 MARMP2025SCZZ 7 MLEVP2331SCZA 8 MSPRC3153SCZZ 9 MSPRC3163SCZZ 10 MSPRC3164SCZZ - Sharp FO-2970M | Service Manual - Page 86
FO-2970MU [4] Drive unit B1 8 B1 9 7 2 5 1 6 4 3 [5] Scanner frame unit 10 8 13 1 12 4 7 10 11 B1 14 2 B1 11 Drive unit 3 6 9 5 - 5 - - Sharp FO-2970M | Service Manual - Page 87
,White(15/23Z) AC C Motor sheet AU B Transfer motor AC C Ground cable C AA C Screw(3x8) DESCRIPTION FO-2970MU [5] Scanner frame unit 1 QCNW-269ASCZZ 2 LBSHP2121SCZZ 3 LFRM-2213SCZC 4 LHLDZ2180XHZZ 5 LHLDZ2181XHZZ 6 RUNTZ2057SCZZ 7 NROLR2435SCZZ 8 NROLR2436SCZZ 9 PSHEZ3540SCZZ 10 - Sharp FO-2970M | Service Manual - Page 88
FO-2970MU [6] Printer frame 10 24 3 23 33 B2 37 A Upper frame 10 B2 9 15 21 B4 36 7 34 B2 B1 Fusing unit B2 B6 B6 B6 1 25 1 B4 Lower frame 31 B6 B1 B6 B6 12 11 28 8 5 B2 18 19 22 B4 13 26 B2 14 4 17 6 20 16 B3 B3 2 B3 29 30 B2 A 37 B5 B6 35 32 27 27 - 7 - - Sharp FO-2970M | Service Manual - Page 89
C Interlock sw lever AD C Ground cable D2 AA C Screw(4x6) AA C Screw(3x10) AA C Screw(3x8) AA C Screw(3x8) AB C Screw AA C Screw(3x6) DESCRIPTION FO-2970MU - 8 - - Sharp FO-2970M | Service Manual - Page 90
FO-2970MU [7] Upper frame B1 12 8 6 23 10 21 20 23 9 11 3 16 19 13 3 2 18 14 17 - 9 - 7 B2 B2 1 4 5 15 W1 W2 B3 W3 22 - Sharp FO-2970M | Service Manual - Page 91
sheet 2 AC C Spacer BZ E Optical unit AA C Screw(3x8) AA C Screw(3x6) AA C Screw(3x8)(Red,Left type) AC C Washer AC C Washer AC C Washer DESCRIPTION FO-2970MU - 10 - - Sharp FO-2970M | Service Manual - Page 92
FO-2970MU [8] Lower frame 25 27 14 18 22 B2 W3 8 3 29 24 5 14 26 16 21 1 17 30 32 1 17 7 22 W3 30 11 W1 B3 31 12 15 B1 4 W2 B1 20 2 23 10 6 9 13 W2 B1 19 28 - 11 - - Sharp FO-2970M | Service Manual - Page 93
Tray spring AA C Separate spring AB C Fusing spring L AB C Fusing guide spring AB C DV bias spring AB C Fusing spring R AB C DR bearing L AC C Transfer gear AX C Transfer roller AA C Cover AM C Fusing guide AC C Dumper 1 AC C Pin AC C TR sheet AA C Screw(3x8) AA - Sharp FO-2970M | Service Manual - Page 94
FO-2970MU [9] Fusing unit 18 11 B2 17 2 4 901 15 4 15 18 13 9 B5 7 12 18 B7 10 14 W1 B6 6 16 3 1 B1 B4 B3 5 8 NO. - Sharp FO-2970M | Service Manual - Page 95
material & Accessories 14 10 16 8 9 AC Cord 17 5 19 11 FO-2970MU 6 1 7 18 2 15 4 3 12 13 Front NO. Original document support ass'y C Received document tray ass'y E Handset unit C Paper tray ass'y S Toner cartridge(Initial starter cartridge) D Rapid key labels E Sharp laser multifunction - Sharp FO-2970M | Service Manual - Page 96
FO-2970MU NO. PARTS CODE [11] Control PWB unit 1 UBATL2049SCZZ 2 RR-DZ1115AFZZ 3 RR-DZ1115AFZZ 4 RR-DZ1115AFZZ 5 RR-DZ1115AFZZ 6 RR-TZ3016SCZZ 7 RR-TZ3016SCZZ 8 RR-TZ3016SCZZ 9 RR-TZ3016SCZZ - Sharp FO-2970M | Service Manual - Page 97
AC C Capacitor(10WV 1µF) AC C Capacitor(10WV 1µF) AA C Capacitor(50WV 2200PF) AA C Capacitor(50WV 1000PF) AA C Capacitor(50WV 1000PF) - 16 - DESCRIPTION FO-2970MU [C114] [C115] [C116] [C117] [C118] [C120] [C121] [C123] [C124] [C125] [C126] [C127] [C129] [C130] [C131] [C133] [C142] [C143 - Sharp FO-2970M | Service Manual - Page 98
FO-2970MU NO. PARTS CODE [11] Control PWB unit 161 VCKYCY1HB102K 162 VCKYCY1HB102K 163 VCKYCY1HB102K 164 VCCCCY1HH470J 165 VCKYCY1EF104Z 166 VCKYCY1EF104Z 167 VCKYCY1EF104Z 168 VCKYCY1HB102K 169 - Sharp FO-2970M | Service Manual - Page 99
IC,32bit RISC MICROPROCESSOR(SH7041) B IC,DRIVER(ULN2003A) B IC,ANALOG SW(HCF4053) B IC,33600bps FAX MODEM(FM336) B IC,SPEAKER AMP( C Resistor(1/10W 1MΩ ±5%) C Resistor(1/10W 100Ω ±5%) C Resistor(1/10W 270Ω ±5%) - 18 - FO-2970MU [C411] [CA1] [CA2] [CA3] [CA4] [CNCIS] [CNFUSE] [CNLIUA] [CNMT] [CNPN - Sharp FO-2970M | Service Manual - Page 100
FO-2970MU NO. PARTS CODE [11] Control PWB unit 321 VRS-CY1JB271J 322 VRS-CY1JB103J 323 VRS-CY1JB330J 324 VRS-CY1JB101J 325 VRS-CY1JB680J 326 VRS- - Sharp FO-2970M | Service Manual - Page 101
C Resistor(1/10W 0Ω ±5%) AA C Resistor(1/10W 10KΩ ±5%) AA C Resistor(1/10W 4.7KΩ ±5%) AA C Resistor(1/10W 0Ω ±5%) AA C Resistor(1/10W 0Ω ±5%) - 20 - DESCRIPTION FO-2970MU [R270] [R271] [R272] [R273] [R274] [R275] [R276] [R277] [R278] [R279] [R280] [R281] [R282] [R283] [R284] [R285] [R286 - Sharp FO-2970M | Service Manual - Page 102
FO-2970MU NO. PARTS CODE [11] Control PWB unit 481 VRS-CY1JB000J 482 VRS-CY1JB000J 483 VRS-CY1JB103J 484 VRS-CY1JB103J 485 VRS-CY1JB103J 486 VRS- - Sharp FO-2970M | Service Manual - Page 103
(50WV 1000PF) AA C Capacitor(50WV 100PF) AA C Capacitor(50WV 4700PF) AA C Capacitor(50WV 100PF) AA C Capacitor(50WV 100PF) AA C Capacitor(50WV 100PF) - 22 - FO-2970MU [D1] [D2] [DB1] [IC1] [L1] [L2] [L3] [L4] [L5] [MJ1] [MJ2] [MJTEL] [PC1] [PC2] [Q1] [Q101] [Q102] [Q103] [Q104] [R1] [R2 - Sharp FO-2970M | Service Manual - Page 104
FO-2970MU NO. PARTS CODE [13] Printer PWB unit 18 VCKYPA1HB391K 19 C IC protector(ICP-N25) AC C Terminal(N2046) AE B IC,TRANSISTOR ARRAY(ULN2003) AR B IC,MOTOR DRIVER(A2918SWH) AC C Terminal(N2046) AG B Photo transistor(SG206S) AG B Photo transistor(SG206S) AB B Transistor(DTC114 - Sharp FO-2970M | Service Manual - Page 105
capacitor(50WV 0.1µF) C Electrolytic capacitor(330PF) C Electrolytic capacitor(330PF) C Ceramic capacitor(50WV 0.1µF) C Electrolytic capacitor(330PF) C Electrolytic capacitor(33PF) - 24 - FO-2970MU [R17] [R18] [R19] [R20] [R21] [R22] [R23] [R24] [R25] [R26] [R27] [R28] [R29] [R30] [R31] [R32] [R33 - Sharp FO-2970M | Service Manual - Page 106
FO-2970MU NO. PARTS CODE [14] Power supply PWB unit 18 0KY0K207B0020 19 0KY0K251A0020 20 0KY0K214L0120 21 0KY0D251A0020 22 0KY0D466A0600 23 0KY0D251A0020 24 0KY0D251A0020 25 0KY0D157A0060 - Sharp FO-2970M | Service Manual - Page 107
AC 2 QSW-Z2262AXZZ AE 3 QSW-M2294XHZZ AE (Unit) 901 DCEKP223CSC01 BF C Tact switch C FR sensor switch C ORG sensor switch E Operation panel PWB unit(without sensor) FO-2970MU [SW] [FR SNS] [ORG SNS] - 26 - - Sharp FO-2970M | Service Manual - Page 108
FO-2970MU I n d e x PARTS CODE [C] CCASP2121SC08 CCNW-270ASC01 CFRM-2214SC51 CHLDZ0040PS73 CPLTP0274PS51 CPLTP3084SC02 CPLTP3085SC02 CPLTP3088SC02 [D] DCEK-224CSC01 ″ DCEKC182PSCZZ ″ DCEKL259CSC01 ″ DCEKP223CSC01 ″ DHAI-0139GCZZ DUNT-205CSCZA DUNTK0152PSZZ DUNTK369BSCOG DUNTW221CSC01 [G] - Sharp FO-2970M | Service Manual - Page 109
FO-2970MU PARTS CODE QCNW-289ASCOG QCNW-290ASCZZ QCNW-342ASCZZ ″ QCNW-343ASCZZ QCNW-387ASCZZ QFS-P2010SCZZ QFS-T0005GCZZ QJAKZ2060SC0B ″ QJAKZ2079XH0D QSLP-0028GCZZ QSLP-0029GCZZ QSLP-0030GCZZ - Sharp FO-2970M | Service Manual - Page 110
FO-2970MU PARTS CODE VCKYCY1EF104Z VCKYCY1HB102K No. PRICE NEW PART RANK MARK RANK 11-56 AA C 11-57 AA C 11-58 AA C 11-59 AA C 11- - Sharp FO-2970M | Service Manual - Page 111
FO-2970MU PARTS CODE VRD-HT2EY122J VRD-HT2EY151J VRD-HT2EY153J ″ VRD-HT2EY203J ″ ″ ″ VRD-HT2EY221J ″ VRD-HT2EY223J VRD-HT2EY300J VRD-HT2EY334J VRD-HT2EY392J VRD-HT2EY472J ″ ″ VRD-HT2EY473J - Sharp FO-2970M | Service Manual - Page 112
FO-2970MU PARTS CODE VRS-CY1JB471J VRS-CY1JB472J VRS-CY1JB473J ″ ″ VRS-CY1JB513J VRS-CY1JB562J VRS-CY1JB621J VRS-CY1JB622J VRS-CY1JB623J ″ VRS-CY1JB680J VRS-CY1JB681J VRS-HT3AAR56J ″ - Sharp FO-2970M | Service Manual - Page 113
FO-2970MU CAUTION FOR BATTERY REPLACEMENT (Danish) ADVARSEL ! Lithiumbatteri-Eksplosionsfare ved fejlagtig le constructeur. Mettre au rébut les batteries usagées conformément aux instructions du fabricant. (Swedish) VARNING Explosionsfare vid felaktigt batteribyte. Använd samma batterityp - Sharp FO-2970M | Service Manual - Page 114
FO-2970MU COPYRIGHT © 2000 BY SHARP CORPORATION ALL RIGHTS RESERVED. No part of this publication may , recording, or otherwise, without prior written permission of the publisher. SHARP CORPORATION Communication Systems Group Quality & Reliability Control Center Higashihiroshima, Hiroshima 739
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 |
FO-2970MU
FO-2970MU
FO-2950MU
Control PWB
DCEKC182PSCZZ
DCEKC388NSCZZ
TEL/LIU PWB
DCEKL259CSC01
DCEKL222CSC01
Modem speed
33,600 bps
14,400 bps
No. 00ZFO2970USME
Parts marked with "
" is important for maintaining the safety of the set. Be sure to replace these parts with specified ones for maintain-
ing the safety and performance of the set.
This document has been published to be used
for after sales service only.
The contents are subject to change without notice.
SHARP CORPORATION
SERVICE MANUAL
Laser Wave Length
: 780
±
15 nm
Laser Pulse Times
: (13.95
±
3
μ
s)/7mm
Laser Output Power : 0.4 mW
±
0.05mW
CAUTION
This laser facsimile is a class 1 laser product that complies with 21CFR 1040.10 and 1040.11 of the CDRH or IEC60825-1 standard.
This means that this machine does not produce a hazardous laser radiation. The use of controls, adjustments or performance of
procedures other than those specified herein may result in hazardous radiation exposure.
This laser radiation is not a danger to the skin, but when an exact focusing of the laser beam is achieved on the eyes retina, there is
danger of spot damage to the retina.
The following cautions must be observed to avoid exposure of the laser beam to your eyes at the time of servicing.
1)
When a problem in the laser optical unit has occurred, the whole optical unit must be exchanged as a unit, not an individual part.
2)
Do not look into the machine with the main switch turned on after removing the toner/developer unit and drum cartridge.
3)
Do not look into the laser beam exposure slit of the laser optical unit with the connector connected when removing and installing
the optical system.
4)
The cover of Laser Printer Unit contains the safety interlock switch.
Do not defeat the safety interlock by inserting wedges or other items into the switch slot.
FACSIMILE
MODEL
FO-2970M
Difference between FO-2970MU and FO-2950MU
Chapters 1, 3, 7 and 8 of this manual are omitted because they are partly common to the FO-2950MU. Please refer to
previous service manual UX-4000MU/FO-2950MU/C (00ZUX4000USME) for these chapters.
SELECTION CODE
DESTINATION
U
U.S.A.