Lexmark E312 Service Manual

Lexmark E312 - Optra B/W Laser Printer Manual

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  • Lexmark E312 | Service Manual - Page 1
    OptraTM E310/E312 4044-XXX • Table of Contents • Start Diagnostics • Safety and Notices • Trademarks • Index Lexmark and Lexmark with diamond design are trademarks of Lexmark International, Inc., registered in the United States and/or other countries.
  • Lexmark E312 | Service Manual - Page 2
    errors. supply in any way it believes appropriate without incurring any obligation to you. You can purchase additional copies of publications related to this product by calling 1-800-553-9727. In other countries, contact your point of purchase. Lexmark and Optra are trademarks of Lexmark
  • Lexmark E312 | Service Manual - Page 3
    Start 2-1 Service Error Codes 2-2 User Error Message Table 2-6 Power-On Self Test (POST 2-9 Symptom Tables 2-10 Service Checks 2-12 Cooling Fan Service Check 2-12 Cover Open Switch Service Check 2-13 Dead Machine Service Check 2-14 Fuser Service Check 2-17 Main Motor Service Check 2-21
  • Lexmark E312 | Service Manual - Page 4
    model E312 5-9 LVPS (model E312 5-14 High Voltage Power Supply (model E310 5-16 High Voltage Power Supply (model E312 5-18 Interconnect Board (model E310 5-21 Parts Catalog 6-1 Assembly 1: Covers 6-2 Assembly 2: Frame 6-6 Assembly 3: Fuser 6-10 Assembly 4: Main Drive 6-14 Assembly 5: Paper
  • Lexmark E312 | Service Manual - Page 5
    nominally a 5 milliwatt gallium arsenide laser operating in the wavelength region of 770-795 nanometers. The laser system and printer are designed so there is never any human access to laser radiation above a Class I level during normal operation, user maintenance, or prescribed service condition. v
  • Lexmark E312 | Service Manual - Page 6
    4044-XXX Laser Advisory Label vi
  • Lexmark E312 | Service Manual - Page 7
    4044-XXX Class 1 Laser Statement Label vii
  • Lexmark E312 | Service Manual - Page 8
    4044-XXX Laser Der Drucker erfüllt gemäß amtlicher Bestätigung der USA die Anforderungen der Bestimmung DHHS (Department of Health and Human Services) 21 CFR Teil J für Laserprodukte der Klasse I (1). In anderen Ländern gilt der Drucker als Laserprodukt der Klasse I, der die Anforderungen der IEC (
  • Lexmark E312 | Service Manual - Page 9
    classe IIIb (3b) all'arseniuro di gallio della potenza di 5mW che opera sulla lunghezza d'onda compresa tra 770 e 795 nanometri. Il sistema laser e la stampante sono stati progettati in modo tale che le persone a contatto con la stampante, durante il normale funzionamento, le operazioni di servizio
  • Lexmark E312 | Service Manual - Page 10
    CFR Subchapter J, voor andere landen in IEC 825. Laserprodukten van klasse I worden niet als ongevaarlijk aangemerkt. De printer is voorzien van een laser van klasse IIIb (3b), dat wil zeggen een gallium arsenide-laser van 5 milliwatt met een golflengte van 770-795 nanometer. Het lasergedeelte en de
  • Lexmark E312 | Service Manual - Page 11
    med kravene i IEC 825. Klasse I-laserprodukter betragtes ikke som farlige. Printeren indeholder internt en Klasse IIIB (3b)-laser, der nominelt er en 5 milliwatt galliumarsenid laser, som arbejder på bølgelængdeområdet 770-795 nanometer. Lasersystemet og printeren er udformet således, at mennesker
  • Lexmark E312 | Service Manual - Page 12
    utsätts för laserstrålning över Klass I-nivå vid normal användning, underhåll som utförs av användaren eller annan föreskriven serviceåtgärd. Laser-melding Skriveren er godkjent i USA etter kravene i DHHS 21 CFR, underkapittel J, for klasse I (1) laserprodukter, og er i andre land godkjent som et
  • Lexmark E312 | Service Manual - Page 13
    4044-XXX Avís sobre el Làser Segons ha estat certificat als Estats Units, aquesta impressora compleix els requisits de DHHS 21 CFR, apartat J, pels productes làser de classe I (1), i segons ha estat certificat en altres llocs, és un producte làser de classe I que compleix els requisits d'IEC 825.
  • Lexmark E312 | Service Manual - Page 14
    4044-XXX Japanese Laser Notice Chinese Laser Notice xiv
  • Lexmark E312 | Service Manual - Page 15
    with the use of specific Lexmark components. The safety features of some parts may not always be obvious. Lexmark is not responsible for the use of other replacement parts. • The maintenance information for this product has been prepared for use by a professional service person and is not intended
  • Lexmark E312 | Service Manual - Page 16
    é de certains éléments ne sont pas toujours évidentes. Lexmark ne peut être tenu responsable de l'utilisation d'autres pièces de rechange. • Les consignes d'entretien et de réparation de ce produit s'adressent uniquement à un personnel de maintenance qualifié. • Le démontage et l'entretien de ce
  • Lexmark E312 | Service Manual - Page 17
    Funktionen der Bauteile und Optionen sind nicht immer offensichtlich. Sofern Teile eingesetzt werden, die nicht von Lexmark sind, wird von Lexmark keinerlei Verantwortung oder Haftung für dieses Produkt übernommen. • Die Wartungsinformationen für dieses Produkt sind ausschließlich für die Verwendung
  • Lexmark E312 | Service Manual - Page 18
    aprovado para satisfazer os padrões globais de segurança na utilização de componentes específicos da Lexmark. As funções de segurança de alguns dos componentes podem não ser sempre óbvias. A Lexmark não é responsável pela utilização de outros componentes de substituição. • As informações de seguran
  • Lexmark E312 | Service Manual - Page 19
    4044-XXX Chinese Safety Information Korean Safety Information xix
  • Lexmark E312 | Service Manual - Page 20
    4044-XXX xx
  • Lexmark E312 | Service Manual - Page 21
    Personal Computer or other computers compatible with the IBM Personal Computer (with 386 processor or higher) and Macintosh Computers via the USB connection. Product Name MT/Model Speed Base Memory Emulations Connectivity Resolution Starter Toner Cartridge Optra E310 4044-001 8 pages per minute
  • Lexmark E312 | Service Manual - Page 22
    ESD FRU HVPS LASER LCD LED LVPS MROM NVRAM OEM PC POST ROM SIMM SRAM UPR USB V ac V dc Customer Setup Dynamic Random Access Memory Electrophotographic Process Erasable, Programmable Read-Only Memory Electrostatic Discharge Field Replaceable Unit High Voltage Power Supply Light Amplification by
  • Lexmark E312 | Service Manual - Page 23
    malfunctioning printer. The lights on the operator panel can indicate either a user error message or service error message. When a service error occurs, the printer stops printing and all operator panel LEDs blink in a continuous pattern, indicating a service error, until the printer is powered off
  • Lexmark E312 | Service Manual - Page 24
    button to view the secondary service error code. Go to "Secondary Service Error Codes" on page 2-5. Laser Diode Failure Inspect the printhead cable and replace as necessary. Replace the printhead assembly. If this does not correct the problem, replace the engine/LVPS board. 2-2 Service Manual
  • Lexmark E312 | Service Manual - Page 25
    /LVPS board. Optional Memory Error Replace the optional memory SIMM. If this does not correct the problem, replace the controller board. ROM Checksum Error Replace the ROM SIMM. If this does not correct the problem, replace the controller board. Base Memory Error Replace the controller board
  • Lexmark E312 | Service Manual - Page 26
    SIMM w/Flash. If this does not correct the problem, replace the controller board. Font Checksum Failure Error Replace the ROM SIMM. If this does not correct the problem, replace the controller board. Engine/LVPS Board Communications Failure Error Replace the engine/LVPS board 2-4 Service Manual
  • Lexmark E312 | Service Manual - Page 27
    viewing the primary service error code displays the secondary service error code. The following table contains the secondary service error codes. Blinking Operator Panel LED Fuser Failure - Over Temperature Action Go to the "Hot Fuser Service Check" on page 2-21. Fuser Failure - Under Temperature
  • Lexmark E312 | Service Manual - Page 28
    printer is powered off. Locate the printer's LED Status in the following table and take the indicated action. User Error Message Paper Jam Load Manual Paper cover. If the error message is still present, go to the"Paper Feed Service Check" on page 2-24. Load media into the manual slot and push the
  • Lexmark E312 | Service Manual - Page 29
    Page/Resolution Reduction Warning/ Font Error/ Resource Save Off Deficient Memory Flash Memory Full LED Status Error on solid and Press Button on solid Error blinks and Press Button on solid Action The printer memory is full or the page is too complex to print. The printer is forced to reduce the
  • Lexmark E312 | Service Manual - Page 30
    Page Memory Full Resolution Reduction LED Status Ready, Error, and Press Button on solid Ready, Data, Error, and Press Button on solid Ready, Data blinking and the Error, Press Button on solid Action Switch the printing mode to a different printing mode using the Lexmark driver for Windows, or
  • Lexmark E312 | Service Manual - Page 31
    printer lacks sufficient memory to enable Resource Save. It is recommended that the user install additional memory or set each link buffer to the Auto value. Power-On Self Test (POST) When you turn the printer On, it performs a Power sequentially. 5. Once the fuser has reached operating temperature,
  • Lexmark E312 | Service Manual - Page 32
    Check" on page 2-17. Go to the "Hot Fuser Service Check" on page 2-21. Go to the "Paper Feed Service Check" on page 2-24. Base Printer Symptom Table Symptom Dead Machine (no power) Fan noisy or not working Fuser parts melted Fuser lamp doesn't light Toner not fused to the paper Action Go to the
  • Lexmark E312 | Service Manual - Page 33
    Light print White or black lines or bands Toner on back of page Incorrect characters print Paper jams Main Motor noisy or does not move Paper never picks Paper feeds continuously Paper skew Printer 25. Go to "Paper Feed Service Check" on page 2-24. Go to "Parallel Port Service Check" on page 2-35. Go
  • Lexmark E312 | Service Manual - Page 34
    servicer access to the various circuit boards underneath the printer while supplying necessary power to the rest of the printer. Cooling Fan Service Check FRU Model E310 If the voltage is not present, replace the engine board. If the voltage is present, replace the cooling fan. 2-12 Service Manual
  • Lexmark E312 | Service Manual - Page 35
    4044-XXX Cover Open Switch Service Check Note: Make sure a toner cartridge is installed and the cover closes all the way, engaging the cover open switch lever. The lever can easily be positioned incorrectly if the top cover has been removed and replaced. FRU Models E310 & E312 Cover Open Switch
  • Lexmark E312 | Service Manual - Page 36
    limits: 100 V ac - 127 V ac for the low voltage model printer 200 V ac - 240 V ac for the high voltage model printer FRU Model E310 & E312 LVPS Fuse 2-14 Service Manual Action Check the fuse on the LVPS for continuity. Replace with the appropriate fuse if blown. If a fuse blows again after being
  • Lexmark E312 | Service Manual - Page 37
    /CN403/CN404/ CN405/CN407/CN408 If any of the measured voltages are incorrect, replace the interconnect board. Place the printer on its rear side. Position the LVPS board on a flat surface with all the cables connected. Turn the printer power switch to the on position. Check the AC line voltage at
  • Lexmark E312 | Service Manual - Page 38
    -14. Check the voltage measurements at connector CN503. If any voltage measurements are incorrect, replace the LVPS. Reconnect the LVPS cable to connector CN7 on the engine board. Disconnect all incorrect after connecting one of the cables, replace the FRU that you connected. 2-16 Service Manual
  • Lexmark E312 | Service Manual - Page 39
    XXX Fuser Service Check Cold Fuser Service Check When toner is partially fused to the paper, it is usually caused by low fuser for the low voltage model printer 200 V ac - 240 V ac for the high voltage model printer Turn the printer off and wait a few minutes for the fuser lamp to cool. Turn
  • Lexmark E312 | Service Manual - Page 40
    4044-XXX The fuser lamp does light FRU Model 310 Thermistor Model 312 Thermistor Models E310 & E312 Fuser Lamp Action If the fuser lamp comes on and a fuser failure LED error code displays, be sure the thermistor is contacting the hot roll and the thermistor cable is firmly seated in connector CN1
  • Lexmark E312 | Service Manual - Page 41
    4044-XXX The fuser lamp does not light FRU Model E310 Fuser Lamp Lamp Cable Thermistor LVPS Action Turn the printer off and disconnect the fuser lamp wires from the fuser. Check for continuity across the fuser lamp wire contacts. If there is continuity, go to step 1: Continuity. If there is no
  • Lexmark E312 | Service Manual - Page 42
    the line voltage. If it does not, replace the LVPS. If line voltage is present, check the fuser lamp cable for continuity. Replace if defective.Make sure the fuser thermistor is correctly connected to CN10 on the engine board. If the problem persists, disconnect the thermistor cable from CN1o on
  • Lexmark E312 | Service Manual - Page 43
    thermistor if the resistance is lower than 1k ohm or shorted. Make sure the correct voltage fuser lamp is installed. Replace if necessary. Main Motor Service Check FRU Model E310 Interconnect Board Main Motor Main Motor Cable Action Check the interconnect board for the following voltages: CN405
  • Lexmark E312 | Service Manual - Page 44
    Motor Main Motor Cable Action Check the engine board for the following voltages: CN2-3 +24 V dc CN2-4 +24 V dc If these voltages are not correct, replace the engine board. If these voltages are correct, check the main motor cable for continuity. If continuity exists on each wire
  • Lexmark E312 | Service Manual - Page 45
    to the operator panel and the controller board. Disconnect the cable and check it for continuity. Replace if necessary. If the cable measures continuity, measure the following voltages with the printer on at idle: U5-1: Ground U5-2: +5 V dc U5-3: +5 V dc U5-5: +5 V dc U5-6: Ground If these voltages
  • Lexmark E312 | Service Manual - Page 46
    the operator panel if continuity is not present. If continuity is present, replace the operator panel cable. Paper Feed Service Check Paper Jam error indication during POST FRU Models E310 & E312 Exit Sensor Flag Models E310 & E312 Input Paper Feed Sensor Action If the exit sensor flag is not
  • Lexmark E312 | Service Manual - Page 47
    the solenoid may not stop the pick roller from rotating. Replace the pick roller clutch assembly if necessary. Make sure the E310 & E312 Roller Guides Action Check for correct position of roller guides on pick roller assembly. Paper picks but stops half way through the printer FRU Model E310
  • Lexmark E312 | Service Manual - Page 48
    CN6 connector on the engine board. Disconnect the cable and check for the following voltages: CN6-3 +5 V dc CN6-4 Ground If these voltages are not correct, replace the engine board. If correct, replace the input paper feed sensor. 2-26 Service Manual
  • Lexmark E312 | Service Manual - Page 49
    occasionally picks or picks multiple sheets at once FRU Models E310 & E312 Pick Roller Assembly Models E310 & E312 Paper Separator Assembly Models E310 & E312 Pick Roller Pad Assembly Action Check pick roller assembly for wear. Replace as necessary. Check the friction pad on the paper separator
  • Lexmark E312 | Service Manual - Page 50
    . A worn transfer roller causes the printer to run hotter than required for the media being printed. Excessive heat can cause paper treeing problems, poor stacking or curl. Print Quality Service Check Blank page FRU Action Models E310 & E312 Toner Cartridge Printhead Printhead Cable HVPS Engine
  • Lexmark E312 | Service Manual - Page 51
    Incorrect laser exposure or incorrect charging of the photoconductor causes an all black page. FRU Models E310 & E312 HVPS Contacts Model E310 Engine/LVPS Board HVPS Cable HVPS Model E312 Engine Board HVPS Cable HVPS Action Check the contacts for contamination and correct installation. Replace as
  • Lexmark E312 | Service Manual - Page 52
    /LVPS Board Check the contacts for correct installation and contamination where contact is made with the toner cartridge and HVPS Board. Clean as necessary. If this does not correct the problem, replace the following FRUs one at a time in the order shown: HVPS Board Engine Board 2-30 Service Manual
  • Lexmark E312 | Service Manual - Page 53
    roll in the toner cartridge may have an unbalanced pressure against the PC drum. Try a new toner cartridge. Check the springs in the left and right transfer roller bearings. The bearing assemblies should support the transfer roller, applying even pressure to the PC drum. Replace either or both
  • Lexmark E312 | Service Manual - Page 54
    .1 mm Action The PC drum or gear driving the PC drum may be contaminated or damaged. Inform the customer to replace the toner cartridge. The charge roller or gear driving the charge roller may be contaminated or damaged. Inform the customer to replace the toner cartridge. The supply roller or gear
  • Lexmark E312 | Service Manual - Page 55
    temperature to fuse the toner to the paper. Go to the "Cold Fuser Service Check" on page 2-17. Make sure recommended paper is being used. Action Make sure the toner cartridge is installed correctly and is not low on toner. If the problem continues, install a new toner cartridge. Check the transfer
  • Lexmark E312 | Service Manual - Page 56
    of printed pages. Inspect the transfer roller for contamination and replace as necessary. Incorrect characters print Make sure the correct printer driver software is installed. Incorrect software can cause incorrect characters to print and the image may not fit the page. 2-34 Service Manual
  • Lexmark E312 | Service Manual - Page 57
    XXX Parallel Port Service Check 1. Perform a print test to make sure the printer prints correctly. 2. Be sure the printer cable is printer driver is set up correctly and the correct bidirectional parallel cable is installed, yet the printer still fails to print on command from the host, replace
  • Lexmark E312 | Service Manual - Page 58
    4044-XXX 2-36 Service Manual
  • Lexmark E312 | Service Manual - Page 59
    repairs have corrected the problem. Memory Test The following tests run sequentially when performing this test: Standard Memory Test Optional Memory Test The memory test runs automatically during POST if a different size optional memory SIMM is installed since the last printer power on. Perform the
  • Lexmark E312 | Service Manual - Page 60
    Offset Printer Page Count Installed Memory PQET Setting (on/off) Toner printer off. 2. Open the top cover. 3. Turn the printer power on. 4. When the Error LED comes on solid, double-click the operator panel button. 5. Once the Error printer automatically returns to the Ready mode. 3-2 Service Manual
  • Lexmark E312 | Service Manual - Page 61
    User Mode Print Test Page displays the user default values, installed options, printer features, various typefaces, and the installed printer base code level. 1. Turn the printer power on. The Ready LED comes on solid (printer is in the ready state). 2. Press and release the operator panel button
  • Lexmark E312 | Service Manual - Page 62
    is in the configuration mode. 8. To exit the configuration mode, turn the printer power off. Configuration Mode Operator Panel Overlays When in configuration mode, the first menu item and its setting are displayed. The first menu item is the Parallel Port and is indicated by 3-4 Service Manual
  • Lexmark E312 | Service Manual - Page 63
    4044-XXX the solid Ready LED. The setting of the menu item is indicated by the status of the Press Button LED. To change the menu item setting, briefly press the operator panel button. Once the setting you want is indicated by the status of the Press Button LED, perform a long button press to save
  • Lexmark E312 | Service Manual - Page 64
    port is not being used, disabling it frees allocated memory to be used to process print jobs. Perform the printer power off. Parallel NPA Parallel NPA mode allows two way communication between the host and the printer all data received by the printer must be in NPA packets. Any non-packet data is rejected as
  • Lexmark E312 | Service Manual - Page 65
    a long button press. All LEDs blink once, indicating the setting is saved. 6. Exit the configuration mode by turning the printer power off. Parallel Protocol The printer supports two parallel protocol settings: standard and fastbytes. When the protocol is set to standard, information is received at
  • Lexmark E312 | Service Manual - Page 66
    CRLF/LFCR item on the configuration menu. The CRLF/ LFCR (Error) LED comes on solid. 3. The current CRLF/LFCR setting is 6. Exit the configuration mode by turning the printer power off. Parallel Mode 1 Parallel Mode 1 PC's have open collector outputs on their parallel port signals. 3-8 Service Manual
  • Lexmark E312 | Service Manual - Page 67
    power off. Parallel Mode 2 Parallel Mode 2 controls whether or not the parallel port data is sampled on the leading or trailing edge of strobe. The default is to sample on the leading edge of strobe, however, some IBM clone PC's assumes that a printer will sample on the trailing edge. Perform
  • Lexmark E312 | Service Manual - Page 68
    power off. USB Port This menu item allows the user to enable or disable the USB port. If the port is not being used, disabling it frees allocated memory to be used to process print jobs. the setting is saved. 5. Exit the configuration mode by turning the printer power off. 3-10 Service Manual
  • Lexmark E312 | Service Manual - Page 69
    mode item on the configuration menu. The USB NPA (Error) LED is blinking. 3. The current USB NPA setting problems. When a job is printed, the printer operator panel displays the Hex Trace indication, (Ready LED blinking), showing that the printer remains in the Hex Trace mode. Turn the printer power
  • Lexmark E312 | Service Manual - Page 70
    the printer power off. Restoring Factory Defaults Restoring factory defaults returns the printer settings to the original factory settings. Perform the following steps to invoke factory defaults: 1. Turn the printer power off. 2. Open the top cover. 3. Turn the printer power on. 4. When the Error
  • Lexmark E312 | Service Manual - Page 71
    mode. The cleaning mode helps eliminate small specs of toner present in the background when printing. Perform the following steps to perform the Engine Clean Cycle: 1. Turn the printer power off. 2. Open the top cover. 3. Turn the printer power on. 4. When the Error LED comes on solid, double-click
  • Lexmark E312 | Service Manual - Page 72
    moves through the printer. Images are created with toner on an OPC drum within the toner cartridge. A transfer roller then draws the toner off the OPC drum onto the paper. Once the toner is affixed to the paper by the fuser, the paper exits either the top or front of the printer. 3-14 Service Manual
  • Lexmark E312 | Service Manual - Page 73
    4044-XXX Paper Path Diagnostic Aids 3-15
  • Lexmark E312 | Service Manual - Page 74
    4044-XXX 3-16 Service Manual
  • Lexmark E312 | Service Manual - Page 75
    to electrostatic discharge (ESD). To prevent damage to ESD-sensitive parts, follow the instructions below in addition to all the usual precautions, such as turning off power before removing logic boards: • Keep the ESD-sensitive part in its original shipping container (a special "ESD bag") until you
  • Lexmark E312 | Service Manual - Page 76
    4044-XXX Removal Procedures CAUTION: Be sure to unplug the power cord whenever you are working on the printer with one of the covers removed. Be sure to remove the print cartridge before you perform removal procedures. Screw Identification Table Type 1 Screw Type 2 Screw Type 3 Screw Type 4 Screw
  • Lexmark E312 | Service Manual - Page 77
    4044-XXX 2. Remove the face up cover. 3. Open the front cover. Repair Information 4-3
  • Lexmark E312 | Service Manual - Page 78
    4044-XXX 4. Remove the screw from the support on each side of the printer. Note: If you want to remove the front cover only, remove the two screws and then remove the panel board and board cover. 4-4 Service Manual
  • Lexmark E312 | Service Manual - Page 79
    4044-XXX Rear and Top Cover 1. Remove the three screws, press the retaining tabs and remove the rear cover. 2. Remove the front cover and face up cover. 3. Remove the two screws and remove the top cover. Repair Information 4-5
  • Lexmark E312 | Service Manual - Page 80
    4044-XXX Side Covers 1. Remove the front cover, face up cover, top cover and rear cover. 2. Remove the two screws securing the rear of each side cover. 3. Release the side cover tabs as shown and remove the left and right side covers. 4-6 Service Manual
  • Lexmark E312 | Service Manual - Page 81
    4044-XXX Frame Assembly 1. Remove all covers. 2. Remove the HVPS. 3. Remove the two screws and remove the solenoid. 4. Remove the six screws and remove the frame assembly. Repair Information 4-7
  • Lexmark E312 | Service Manual - Page 82
    Assembly 1. Remove all covers. 2. Remove the wire cover mounting screw (A). 3. Remove the two fuser lamp wire mounting screws (B). 4. Unplug the connector from the engine/LVPS board. 5. Remove the two fuser mounting screws (C). 6. Release the two snaps holding the fuser down. 4-8 Service Manual
  • Lexmark E312 | Service Manual - Page 83
    4044-XXX 7. Slide the fuser in the direction of the arrows and remove the fuser. Note: The backup roller can fall from the printer if the printer is turned on its side with the fuser removed. Repair Information 4-9
  • Lexmark E312 | Service Manual - Page 84
    4044-XXX HVPS 1. Remove all covers. 2. Remove the HVPS board mounting screws. 4-10 Service Manual
  • Lexmark E312 | Service Manual - Page 85
    HVPS. 4. Unplug the cable from the lower connector inside the HVPS and remove the HVPS. Note: The high voltage contacts can fall from the printer with the HVPS removed. Three contacts with the shorter springs are installed in the hole marked L+S. The contact with the longer spring is installed in
  • Lexmark E312 | Service Manual - Page 86
    4044-XXX Interconnect Board (model E310) 1. Remove the LVPS. 2. Unplug all connectors from the interconnect board. 3. Remove the screws and remove the interconnect board. 4-12 Service Manual
  • Lexmark E312 | Service Manual - Page 87
    4044-XXX Engine/LVPS Board (model E310) 1. Turn the printer upside down. 2. Remove all screws securing the SIMM access panel. 3. Remove the SIMM access panel. Repair Information 4-13
  • Lexmark E312 | Service Manual - Page 88
    4044-XXX 4. Unplug all the connectors from the engine/LVPS board. 5. Remove the five screws and remove the engine/LVPS board. 4-14 Service Manual
  • Lexmark E312 | Service Manual - Page 89
    4044-XXX Engine/LVPS Board (model E312) 1. Turn the printer upside down. 2. Remove all screws securing the SIMM access panel. 3. Remove the SIMM access panel. Repair Information 4-15
  • Lexmark E312 | Service Manual - Page 90
    the printer and disconnect all the cables from the LVPS. 6. Remove the screws mounting the LVPS to the shield and remove the LVPS. 7. Disconnect all the cables from the engine board. 8. Remove the screws mounting the engine board to the lower frame and remove the engine board. 4-16 Service Manual
  • Lexmark E312 | Service Manual - Page 91
    4044-XXX Main Drive Assembly 1. Remove all covers. 2. Remove the six main drive assembly mounting screws. 3. Unplug the connector and remove the main drive assembly. Repair Information 4-17
  • Lexmark E312 | Service Manual - Page 92
    4044-XXX Pick Roll Assembly 1. Remove all the covers. 2. Remove the high voltage power supply. 3. Remove the roller bearing. 4-18 Service Manual
  • Lexmark E312 | Service Manual - Page 93
    4044-XXX 4. Remove the roller access cover on the left side of the pick roller assembly. 5. Remove the upper frame. 6. Remove the pick up roller gear and clutch. 7. Lift the pick roll assembly from the printer. Repair Information 4-19
  • Lexmark E312 | Service Manual - Page 94
    4044-XXX Printhead Assembly 1. Remove the top cover. 2. Unplug all the connectors from the printhead. 3. Remove the four mounting screws and remove the printhead. Note: Be sure to transfer the snap-on torroids when replacing the printhead cable. 4-20 Service Manual
  • Lexmark E312 | Service Manual - Page 95
    4044-XXX Transfer Roll 1. Remove the front cover and face up cover. 2. Remove the black cover on the left end of the transfer roll. 3. Press the latches on the bearings to release them from the lower frame. 4. Lift the transfer roll from the printer. Repair Information 4-21
  • Lexmark E312 | Service Manual - Page 96
    4044-XXX 4-22 Service Manual
  • Lexmark E312 | Service Manual - Page 97
    4044-XXX 5. Connector Locations Controller Board (model E310/E312) Connector J1 Printhead U5 Operator Panel (signals at idle) J7 Engine/LVPS Board Pin No. Signal 1 N/A 2 Ground 1 Ground 2 +5 V dc 3 +5 V dc 4 N/A 5 +5 V dc 6 Ground 1 +5 V dc 2 +5 V dc 3 +5 V
  • Lexmark E312 | Service Manual - Page 98
    4044-XXX Connector J7 (continued) Pin No. Signal 15 +5 V dc 16 +5 V dc 17 +5 V dc 18 Ground 19 Ground 20 Ground 21 Ground 22 Ground 23 +5 V dc 24 +5 V dc 5-2 Service Manual
  • Lexmark E312 | Service Manual - Page 99
    4044-XXX Connector Locations 5-3
  • Lexmark E312 | Service Manual - Page 100
    ) Connector CN201 Power Switch CN202 Fuser Lamp CN1 Thermistor CN2 HVPS/Printhead Pin No. Signal 1 AC In 2 AC In 1 AC In 2 AC In 1 THERM 2 +3.9 V dc 1 +24 V dc SWITCH 2 +24 V dc 3 Ground 4 +24 V dc 5 VDO 6 MHV 7 LDON 8 SUPPLY 9 Ground 10 DEV350 5-4 Service Manual
  • Lexmark E312 | Service Manual - Page 101
    4044-XXX Connector CN2 (continued) Pin No. Signal 11 HSYNC 12 THVPWM 13 EXT CLK 14 Ground 15 Ground 16 THVEA 17 LREADY 18 DEV300 19 P MOTOR 20 +5 V dc 21 AGND 22 AGND 23 THVREAD 24 AGND Connector Locations 5-5
  • Lexmark E312 | Service Manual - Page 102
    Ground 11 CLUTCH J 12 PEMPTY J 13 +24 V dc 14 PNARROW J 15 +5 V dc 16 +24 V dc 17 PTL J 18 +5 V dc 19 PMOTOR EXT J 20 EXT CLK J 5-6 Service Manual
  • Lexmark E312 | Service Manual - Page 103
    4044-XXX Connector CN5 Controller Board Pin No. Signal 1 EBUSY 2 Not Used 3 EMSG 4 EXITPAP 5 CCLK 6 PRINT 7 VDI 8 Not Used 9 PSYNC 10 READY 11 HSYNC 12 Not Used 13 +5 V dc 14 CMSG 15 +5 V dc 16 +5 V dc 17 Ground 18 +5 V dc 19 Ground 20 Ground 21 Ground 22
  • Lexmark E312 | Service Manual - Page 104
    4044-XXX 5-8 Service Manual
  • Lexmark E312 | Service Manual - Page 105
    4044-XXX Engine Board (model E312) Connector CN1 Controller Board Pin No. Signal 1 EBUSY 2 Not Used 3 EMSG 4 EXITPAP 5 CCLK 6 PRINT 7 VDI 8 Not Used 9 PSYNC 10 READY 11 HSYNC 12 Not Used 13 +5 V dc 14 CMSG 15 +5 V dc 16 +5 V dc 17 Ground, Floating 18 +5 V dc 19
  • Lexmark E312 | Service Manual - Page 106
    V dc 4 +24 V dc 5 OUTA* 6 OUTB* 1 +24 V dc Switch 2 Not Used 3 Fan 1 +24 V dc Switch 2 Clutch 1 PEMPTY 2 +5 V dc 3 Ground, Floating 1 P Feed 2 P Width 3 +5 V dc 4 Ground, Floating 5-10 Service Manual
  • Lexmark E312 | Service Manual - Page 107
    CN7 LVPS CN8 Pre-Transfer LED (PTL) CN9 DCV CN10 Thermistor Pin No. Signal 1 +5 V dc 2 +5 V dc 3 Ground, Floating 4 Ground, Floating 5 Fuser On 6 +24 V dc Switch 7 Ground 8 Ground 9 +24 V dc 10 +24 V dc 1 PTL 2 Ground, Floating 1 Not Used 2 Not Used 3 Not Used
  • Lexmark E312 | Service Manual - Page 108
    1 +24 V dc 2 +24 V dc Switch 3 +24 V dc 4 +24 V dc Switch 5 LREADY 6 THVEA 7 VDO 8 THV PWM 9 HSYNC 10 MHV PWM 11 DEVEA-A 12 Supply EA 13 LDON 14 DEVEA-B 15 Ground, Floating 16 Ground, Floating 17 Ground, Floating 18 +5 V dc 19 Ground 20 +5 V dc 21 Ground 22
  • Lexmark E312 | Service Manual - Page 109
    4044-XXX Connector Locations 5-13
  • Lexmark E312 | Service Manual - Page 110
    E312) Connector CN501 Power Switch CN502 Fuser Lamp CN503 Engine Board Pin No. Signal 1 AC In 2 AC In 1 AC In 2 AC In 1 +5 V dc 2 +5 V dc 3 Ground, Floating 4 Ground, Floating 5 Fuser On 6 +24 V dc Switch 7 Ground 8 Ground 9 +24 V dc 10 +24 V dc 5-14 Service Manual
  • Lexmark E312 | Service Manual - Page 111
    4044-XXX Connector Locations 5-15
  • Lexmark E312 | Service Manual - Page 112
    4044-XXX High Voltage Power Supply (model E310) Connector CN1 Engine/LVPS Board Pin No. Signal 1 +24 V dc 2 +24 V dc SWITCH 3 +24 V dc 4 Ground 5 MHV 6 VDO 7 SUPPLY 8 LDON 9 DEV350 10 Ground 11 THVPWM 12 HSYNC 13 Ground 14 EXT CLK 15 THVEA 16 Ground 17 DEV300 18
  • Lexmark E312 | Service Manual - Page 113
    4044-XXX Connector CN2 Cover Open Switch CN3 Printhead CN4 Printhead Pin No. Signal 1 +24 V dc SWITCH 2 Not Used 3 +24 V dc 1 +24 V dc SWITCH 2 AGND 3 P MOTOR 4 LREADY 5 EXT CLK 1 HSYNC 2 +5 V dc SWITCH 3 Ground 4 LDON 5 VDO 6 Ground Connector Locations 5-17
  • Lexmark E312 | Service Manual - Page 114
    4044-XXX High Voltage Power Supply (model E312) Connector CN1 Engine Board Pin No. Signal 1 +24 V dc SWITCH 2 +24 V dc 3 +24 V dc SWITCH 4 + 24 V dc 5 THVEA 6 17 +5 Vdc 18 Ground, Floating 19 +5 V dc 20 Ground 21 Ground 22 Ground 23 PMOTOR 24 THVREAD 5-18 Service Manual
  • Lexmark E312 | Service Manual - Page 115
    4044-XXX Connector CN2 Cover Open Switch CN3 Printhead CN4 Printhead Pin No. Signal 1 +24 V dc SWITCH 2 +5 V dc SWITCH 3 +5 V dc 4 +24 V dc 1 +24 V dc SWITCH 2 AGND 3 P MOTOR 4 LREADY 5 EXT CLK 1 HSYNC 2 +5 V dc SWITCH 3 Ground, Floating 4 LDON 5 VDO 6 Not Used
  • Lexmark E312 | Service Manual - Page 116
    4044-XXX 5-20 Service Manual
  • Lexmark E312 | Service Manual - Page 117
    4044-XXX Interconnect Board (model E310) Connector Pin No. CN401 Paper Feed/Paper 1 Narrow Sensor 2 3 4 CN402 Clutch 1 2 CN403 Paper Empty 1 Sensor 2 3 CN404 Developer Fuse 1 2 CN405 Main Motor 1 2 3 4 5 6 Signal PFEED J PNARROW J +5 V dc
  • Lexmark E312 | Service Manual - Page 118
    AGND PFEED J Ground Ground PEMPTY J CLUTCH J PNARROW J +24 V dc +24 V dc +5 V dc +5 V dc PTL J EXT CLK J PMOTOR EXT J PTL J +5 V dc DEV FAN J N/A +24 V dc 5-22 Service Manual
  • Lexmark E312 | Service Manual - Page 119
    4044-XXX Connector Locations 5-23
  • Lexmark E312 | Service Manual - Page 120
    4044-XXX 5-24 Service Manual
  • Lexmark E312 | Service Manual - Page 121
    Catalog • SIMILAR ASSEMBLIES: If two assemblies contain a majority of identical parts, they are shown on the same list. Common parts are shown by one index number. Parts peculiar to one or the other of the assemblies are listed separately and identified by description. • AR: (As Required) in the
  • Lexmark E312 | Service Manual - Page 122
    4044-XXX Assembly 1: Covers 6-2 Service Manual
  • Lexmark E312 | Service Manual - Page 123
    15 1-15 1-15 NS Part Number 12G0021 12G0022 12G1939 12G0175 12G0024 12G0025 12G0126 12G0030 12G0031 12G0032 12G1850 12G0027 12G0181 12G0029 12G1846 12G1874 12G3668 12G0112 Units 1 1 1 1 1 1 2 1 1 1 1 1 6 2 1 1 1 1 1 Description Extender, Paper Support Support, Paper E310 Support, Paper E312 Cover
  • Lexmark E312 | Service Manual - Page 124
    4044-XXX Assembly 1: Covers (continued) 6-4 Service Manual
  • Lexmark E312 | Service Manual - Page 125
    4044-XXX AsmIndex 1-17 1-17 1-18 1-19 1-20 1-21 1-22 1-23 1-24 Part Number 12G0035 12G1938 12G0098 12G1847 12G0037 12G0040 12G0041 12G0176 Units 1 1 1 7 1 1 1 1 1 Description Tray Asm, Paper E310 Tray Asm, Paper E312 Cover Asm, Rear Screw, Type 1 PP 12G0101 Cover, Right Side Cover, Lower Front
  • Lexmark E312 | Service Manual - Page 126
    4044-XXX Assembly 2: Frame 6-6 Service Manual
  • Lexmark E312 | Service Manual - Page 127
    Cartridge Lock Lock, Print CartrIdge, Right Lock, Print Cartridge, Left Housing, Cover Open Sensor E310 Housing, Cover Open Sensor E312 Lever, Cover Open Sensor E310 Lever, Cover Open Sensor E312 Spring, Cover Open Sensor Board Asm, Cover Open Sensor E310 Board Asm, Cover Open Sensor E312 Parts
  • Lexmark E312 | Service Manual - Page 128
    4044-XXX Assembly 2: Frame (continued) 6-8 Service Manual
  • Lexmark E312 | Service Manual - Page 129
    Part Number Guide, HV Contact Contact Asm, HV-Transfer Roller Cover, Fuser Lamp Wiring Contact Asm, HV-Main Cable Asm, Power Switch E310 Cable Asm, Power Switch E312 Frame Asm, Lower E310 Frame Asm, Lower E312 Cover, Pick Roller Access Bearing Asm, Transfer Roller Left Gear, Transfer Roller Parts
  • Lexmark E312 | Service Manual - Page 130
    4044-XXX Assembly 3: Fuser 6-10 Service Manual
  • Lexmark E312 | Service Manual - Page 131
    14 Part Number 12G0074 12G1935 12G0122 12G1936 12G0075 12G0166 12G0167 12G0165 12G0160 12G0161 12G0159 12G0123 12G0103 12G1891 12G0157 12G0158 12G0171 Units 1 1 1 1 7 1 2 1 1 2 1 4 4 4 4 4 2 2 Description Fuser Assembly 110 V dc E310 Fuser Assembly 110 V dc E312 Fuser Assembly 220 V dc E310 Fuser
  • Lexmark E312 | Service Manual - Page 132
    4044-XXX Assembly 3: Fuser (continued) 6-12 Service Manual
  • Lexmark E312 | Service Manual - Page 133
    , Fuser, 220 V ac E310 Lamp, Fuser, 220 V ac E312 Plate, Hot Roll Ground Gear, Fuser Hot Roll Bearing, Right Hot Roll Bearing Asm, Backup Roll Roller Asm, Exit Paper Feed Bushing, Exit Paper Feed Roller Roller, Backup Hot Roll, Fuser Bearing, Left Hot Roll Frame, Fuser E310 Frame, Fuser E312 Parts
  • Lexmark E312 | Service Manual - Page 134
    4044-XXX Assembly 4: Main Drive 6-14 Service Manual
  • Lexmark E312 | Service Manual - Page 135
    4-7 4-8 4-9 4-10 4-11 Part Number 12G0042 12G1877 12G0044 Units 1 1 1 5 1 1 1 6 1 1 1 1 Description Main Drive Assembly E310 Main Drive Assembly E312 Motor Asm, 12G0101 Gear, Fuser Drive PP 12G0102 Gear, Idler PP 12G0102 Gear, OPC Drive 1 PP 12G0102 Gear, OPC Drive 2 PP 12G0102 Parts Catalog 6-15
  • Lexmark E312 | Service Manual - Page 136
    4044-XXX Assembly 5: Paper Feed 6-16 Service Manual
  • Lexmark E312 | Service Manual - Page 137
    4044-XXX AsmIndex 5-1 5-2 5-3 5-4 5-5 5-6 5-7 5-8 5-8 5-9 5-10 Part Number 12G0063 12G0068 12G0062 12G0121 12G0104 12G0065 12G0067 12G1933 12G0066 12G0064 Units 1 1 1 , Pick Roller Roller Asm, Pick E310 Roller Asm, Pick E312 Bearing, Left Pick Roller Shaft Separator Asm, Paper Parts Catalog 6-17
  • Lexmark E312 | Service Manual - Page 138
    4044-XXX Assembly 5: Paper Feed (continued) 6-18 Service Manual
  • Lexmark E312 | Service Manual - Page 139
    5-11 5-12 5-13 5-13 5-14 5-15 Part Number 12G0105 12G1934 12G0072 12G0070 12G1889 12G0073 12G0071 Units 1 1 2 1 1 1 1 Description Shaft Asm, Input Paper Feed E310 Shaft Asm, Input Paper Feed E312 Separator, Secondary Paper E310 Roller Asm, Input Paper Feed E310 Roller Asm, Input Paper Feed E312
  • Lexmark E312 | Service Manual - Page 140
    4044-XXX Assembly 6: Electronics (model E310) 6-20 Service Manual
  • Lexmark E312 | Service Manual - Page 141
    Part Number 12G0087 1339526 1339517 1339519 Units 1 1 1 1 1339520 1 1339521 1 1339522 1 1339523 1 1339525 1 1342534 1 1342536 1 12G0097 1 12G0108 1 14 12G3786 1 12G3783 1 12G3784 1 12G0114 1 Description Board Asm, HVPS E310 Power Cord, U.S., Canada, Brazil (HV) Power Cord, Saudi Arabia Power
  • Lexmark E312 | Service Manual - Page 142
    4044-XXX Assembly 6: Electronics (model E310 continued) 6-22 Service Manual
  • Lexmark E312 | Service Manual - Page 143
    14 Part Number 12G0095 12G0089 12G0091 12G0090 12G0092 12G0100 12G0088 12G1828 12G0096 Units 1 1 1 1 1 1 1 1 1 Description Cable Asm, Engine/LVPS Board to Controller Board E310 Board Asm, Engine/LVPS-110 V ac E310 Board Asm, Engine/LVPS-220 V ac E310 Fuse, Power Supply-110 V ac Fuse, Power Supply
  • Lexmark E312 | Service Manual - Page 144
    4044-XXX Assembly 6: Electronics (model E312) 6-24 Service Manual
  • Lexmark E312 | Service Manual - Page 145
    10 6-11 6-11 6-12 6-13 Part Number 12G1896 Units 1 12G1940 1 12G0108 1 14 12G1872 1 12G0114 1 12G1926 1 12G1941 1 12G1898 1 12G1899 1 12G0090 1 12G0092 1 12G1937 1 12G1927 1 Description Board Asm, HVPS E312 Power Cord Reference Assembly 6: Electronics (model 310) Asm/Index 6-2. Cable Asm, Motor
  • Lexmark E312 | Service Manual - Page 146
    99A0545 Units Description 1 SIMM, 4MB DRAM Memory 1 SIMM, 8MB DRAM Memory 1 SIMM, 16MB DRAM Memory 1 SIMM, 32MB DRAM Memory 1 SIMM, 64MB DRAM Memory 1 SIMM, 1 Meg Flash Memory 1 SIMM, 2 Meg Flash Memory 1 SIMM, 4 Meg Flash Memory 1 Adapter, External Serial 6-26 Service Manual
  • Lexmark E312 | Service Manual - Page 147
    4044-XXX Assembly 8: Miscellaneous AsmIndex 8 8 Part Number Units 1 3 2 6 2 1 1 1 1 1 1 1 1 1 Description Parts Packet, Fasteners PP 12G0101 o Screw, Type 1 (m3x10) o Screw, Type 2 (m4x10) o Screw, Type 3 (m3x10) o Screw, Type 4 (m3x6) o Clip, E Parts Packet, Gears PP 12G0102 o Gear, Drive Feed
  • Lexmark E312 | Service Manual - Page 148
    4044-XXX 6-28 Service Manual
  • Lexmark E312 | Service Manual - Page 149
    Connectors 5-21 L Laser Notice v M Memory Test 3-1 O Options 1-1 P Paper Path 3-15 Parts Catalog 6-1 Covers 6-2 Electronics (model E310) 6-20 Electronics (model E312) 6-24 Frame 6-6 Fuser 6-10, 6-12 Main Drive 6-14 Miscellaneous 6-27 Options 6-26 Paper Feed 6-16 POST Symptom Table 2-10 Power-On Self
  • Lexmark E312 | Service Manual - Page 150
    Test Page 3-3 Engine/LVPS Board (model E310) 4-13 Part Numbers Engine/LVPS Board (model E312) 12G0021 6-3 4-15 12G0022 6-3 Frame Assembly 4-7 12G0024 6-3 Fuser Assembly 4-8 12G0025 6-3 HVPS 4-10 12G0027 6-3 Interconnect Board 4-12 12G0029 6-3 Main Drive Assembly 4-17 12G0030 6-3 Pick
  • Lexmark E312 | Service Manual - Page 151
    4044-XXX 12G0071 12G0072 12G0073 12G0074 12G0075 12G0076 12G0077 12G0078 12G0079 12G0080 12G0081 12G0082 12G0083 12G0084 12G0086 12G0087 12G0088 12G0089 12G0090 12G0091 12G0092 12G0094 12G0095 12G0096 12G0097 12G0098 12G0099 12G0100 12G0101 12G0102 12G0103 12G0104 12G0105 12G0106 12G0107 12G0108
  • Lexmark E312 | Service Manual - Page 152
    6-21 1339526 6-21 1342534 6-21 1342536 6-21 99A0517 6-26 99A0518 6-26 99A0519 6-26 99A0520 6-26 99A0521 6-26 99A0522 6-26 99A0523 6-26 99A0545 6-26 99A0724 6-26 I-4 Service Manual
  • Lexmark E312 | Service Manual - Page 153
    Lexmark Optra E310/312 4044-XXX Service Manual P/N 12G3613 05/00 Reader Comment Form You may use this form to communicate your comments about this publication, with the understanding that Lexmark may use or distribute whatever information you supply in any way it believes appropriate without
  • Lexmark E312 | Service Manual - Page 154
    NECESSARY IF MAILED IN THE UNITED STATES BUSINESS REPLY MAIL FIRST CLASS MAIL PERMIT NO. 2659 LEXINGTON, KY POSTAGE WILL BE PAID BY ADDRESSEE LEXMARK INTERNATIONAL INC DEPARTMENT D22A BUILDING 035 3 740 NEW CIRCLE ROAD NW LEXINGTON KY 40511 9954 Fold Here Tape Please Do Not Staple Tape
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4044-XXX
Optra
TM
E310/E312
Lexmark and Lexmark with diamond
design are trademarks of Lexmark
International, Inc., registered in the
United States and/or other countries.
• Table of Contents
• Start Diagnostics
• Safety and Notices
• Trademarks
• Index