Page 3 - iii; Contents
iii 4026-0XX Contents 1 Notices and Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . vi Laser Notice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . viSafety Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xviOzone In...
Page 4 - iv
iv Diagnostic Aids . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1 Power-On Self Test (Post) . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1Diagnostic Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3 Printer Diagnostic Test . . ....
Page 6 - Service Manual; Notices and Safety Information; Laser Notice
vi Service Manual 4026-0XX Notices and Safety Information Laser Notice The printer is certified in the U.S. to conform to the requirements ofDHHS 21 CFR Subchapter J for Class I (1) laser products, andelsewhere is certified as a Class I laser product conforming to therequirements of IEC 825. Class I...
Page 7 - vii
Notices and Safety Information vii 4026-0XX Laser product labels are located on the back of the printer and onthe printhead. CLASS 1 LASER PRODUCTLASER KLASSE1 NACH IEC825LUOKAN 1 LASERLAITEAPPAREIL A LASER DE CLASSE1TO IEC 825
Page 8 - viii
Page 9 - ix; Laser
Notices and Safety Information ix 4026-0XX Laser Der Drucker erfüllt gemäß amtlicher Bestätigung der USA dieAnforderungen der Bestimmung DHHS (Department of Health andHuman Services) 21 CFR Teil J für Laserprodukte der Klasse I (1).In anderen Ländern gilt der Drucker als Laserprodukt der Klasse I,de...
Page 10 - Avvertenze sui prodotti laser
x Service Manual 4026-0XX Avvertenze sui prodotti laser Questa stampante è certificata negli Stati Uniti per essere conformeai requisiti del DHHS 21 CFR Sottocapitolo J per i prodotti laser diclasse 1 ed è certificata negli altri Paesi come prodotto laser diclasse 1 conforme ai requisiti della norma...
Page 11 - xi; Declaração sobre Laser
Notices and Safety Information xi 4026-0XX Declaração sobre Laser A impressora está certificada nos E.U.A. em conformidade com osrequisitos da regulamentação DHHS 21 CFR Subcapítulo J para aClasse I (1) de produtos laser. Em outros locais, está certificadacomo um produto laser da Classe I, em confor...
Page 12 - xii; Lasermeddelelse
xii Service Manual 4026-0XX Lasermeddelelse Printeren er godkendt som et Klasse I-laserprodukt, ioverenstemmelse med kravene i IEC 825. Klasse I-laserprodukter betragtes ikke som farlige. Printerenindeholder internt en Klasse IIIB (3b)-laser, der nominelt er en 5milliwatt galliumarsenid laser, som a...
Page 13 - xiii
Notices and Safety Information xiii 4026-0XX Laser-notis Denna skrivare är i USA certifierad att motsvara kraven i DHHS 21CFR, underparagraf J för laserprodukter av Klass I (1). I andraländer uppfyller skrivaren kraven för laserprodukter av Klass I enligtkraven i IEC 825. Laserprodukter i Klass I an...
Page 14 - xiv; Avís sobre el Làser
xiv Service Manual 4026-0XX Avís sobre el Làser Segons ha estat certificat als Estats Units, aquesta impressoracompleix els requisits de DHHS 21 CFR, apartat J, pels producteslàser de classe I (1), i segons ha estat certificat en altres llocs, és unproducte làser de classe I que compleix els requisi...
Page 15 - xv; Japanese Laser Notice
Notices and Safety Information xv 4026-0XX Japanese Laser Notice Chinese Laser Notice
Page 16 - xvi; Korean Laser Notice
xvi Service Manual 4026-0XX Korean Laser Notice Safety Information • The maintenance information for this product has been preparedfor use by a professional service person and is not intended tobe used by others. • There may be an increased risk of electric shock and personalinjury during disassembl...
Page 17 - xvii; Consignes de Sécurité; Existe mayor riesgo de descarga eléctrica y de daños
Notices and Safety Information xvii 4026-0XX • Während des Auseinandernehmens und der Wartung desGeräts besteht ein zusätzliches Risiko eines elektrischenSchlags und körperlicher Verletzung. Das zuständigeFachpersonal sollte entsprechende Vorsichtsmaßnahmentreffen. • Ersatzteile müssen gleiche oder ...
Page 18 - xviii; Informações de Segurança
xviii Service Manual 4026-0XX personales durante el desmontaje y la reparación de lamáquina. El personal cualificado debe ser consciente de estepeligro y tomar las precauciones necesarias. • Los dispositivos de seguridad de algunas piezas no siemprepueden reconocerse a simple vista. Por lo tanto, lo...
Page 19 - xix; Chinese Safety Information; This product does not produce measurable amounts of ozone gas.
Notices and Safety Information xix 4026-0XX Chinese Safety Information Korean Safety Information Ozone Information This product does not produce measurable amounts of ozone gas.
Page 20 - xx; Preface; This manual is divided into the following chapters:
xx Service Manual 4026-0XX Preface This manual is divided into the following chapters: • “General Information” contains a general description of theprinter, options, and the maintenance approach used to repair it.General environmental and safety instructions as well as specialtools and test equipmen...
Page 21 - General Information 1-1; General Information; Magnetic Phillips Screwdriver
4026-0XX General Information 1-1 1. General Information This printer is a letter-quality page printer designed to attach to anIBM Personal Computer or other computers compatible with the IBMPersonal Computer (with 386 processor or higher). The printer is available in models 4026-06A, 06C, 06D, and 0...
Page 22 - Acronyms
4026-0XX 1-2 Acronyms CSU Customer Setup DRAM Dynamic Random Access Memory EP Electrophotographic Process EPROM Erasable, Programmable Read-OnlyMemory ESD Electrostatic Discharge FRU Field Replaceable Unit HVPS High Voltage Power Supply LASER Light Amplification by Stimulated Emissionof Radiation LC...
Page 23 - Diagnostic Information 2-1; Diagnostic Information; NEVER; manually actuate or disable the top cover; , disable the printhead shutter actuator
4026-0XX Diagnostic Information 2-1 2. Diagnostic Information Start CAUTION: NEVER manually actuate or disable the top cover interlock switch and the printhead shutter actuator at the sametime. To perform some of the service checks and tests, such astroubleshooting paper feed problems, you need to a...
Page 24 - Service Error Codes
4026-0XX 2-2 Service Error Codes When a service error occurs the printer stops printing and alloperator panel LEDs blink in a continuous pattern, indicating aservice error, until the printer is powered off. Press and release the operator panel button to display the serviceerror code. Locate the blin...
Page 25 - Diagnostic Information 2-3
4026-0XX Diagnostic Information 2-3 Controller Card Failure Replace Controller board Optional Memory Error Replace the optional memory SIMM.If this does not correct the problem,replace the controller board. Fan Failure Error Go to the “Fan Service Check” on page 2-17 . ROM Checksum Error Replace the...
Page 27 - Diagnostic Information 2-5
4026-0XX Diagnostic Information 2-5 Engine Board CommunicationsFailure Error Replace the engine board. If thisdoes not correct the problem,replace the controller board. Controller SRAM Failure Error Replace Controller board Blinking Operator Panel LED Action
Page 28 - User Error Message Table
4026-0XX 2-6 User Error Message Table When a user error message occurs the printer stops printing andone or two operator panel LEDs are on solid or blinking until theprinter is powered off. Locate the printer’s LED Status in thefollowing table and take the indicated action. User Error Message LED St...
Page 29 - Diagnostic Information 2-7
4026-0XX Diagnostic Information 2-7 Memory Full/Com-plex Page/ResolutionReduction Warning/Data TransmissionError Error on solid andPress Button on solid The printer memory isfull or the page is toocomplex to print. Theprinter is forced toreduce the resolutionof a formatted page to300 dpi before prin...
Page 30 - User Secondary Error Message Table
4026-0XX 2-8 User Secondary Error Message Table Press and release the operator panel button two times to display theuser secondary error LED status. Each press and release actionmust be performed within a half second. Locate the printer’s LEDstatus in the following table and take the indicated actio...
Page 31 - Diagnostic Information 2-9
4026-0XX Diagnostic Information 2-9 Resolution Reduction Ready, Data blinkingand the Error, PressButton on solid Switch from the GL/2or raster mode toQuick Print Plus modeusing the Lexmarkdriver for Windows, orpress the operatorpanel button toresume printing, or doa front panel reset bypressing and ...
Page 33 - Diagnostic Information 2-11; “POST Symptom Table” on page 2-12
4026-0XX Diagnostic Information 2-11 18. The polygon motor (printhead motor) turns off. 19. The Data LED turns off. 20. The Ready LED stays on solid. If your printer did not successfully complete POST, locate thesymptom in the “POST Symptom Table” on page 2-12 and take the appropriate action. If the...
Page 34 - POST Symptom Table
4026-0XX 2-12 POST Symptom Table Symptom Action POST completes except one ormore LEDs do not come on. Go to the “Operator Panel ServiceCheck” on page 2-27. None of the LEDs come on. Go to the “Operator Panel ServiceCheck” on page 2-27. The printer is dead (No LEDscome on, no motor turns) Go to the “...
Page 35 - Diagnostic Information 2-13; Symptom Table
4026-0XX Diagnostic Information 2-13 Symptom Table Locate your symptom in the following table and take the appropriateaction Symptom Action Dead printer Go to the “Low Voltage Power Sup- ply Service Check” on page 2-22 . Fan not working Go to the “Fan Service Check” on page 2-17 . Fan noisy Go to th...
Page 37 - Diagnostic Information 2-15; Service Checks; Charge Brush Service Check; photoconductor unit
4026-0XX Diagnostic Information 2-15 Service Checks Charge Brush Service Check Note: The charge brush charges the photoconductor and is locatedinside the photoconductor unit. FRU Action 1 Photoconduc-tor Unit Spots and marks can be caused by a defectivecharge brush inside the photoconductor unit . I...
Page 39 - Diagnostic Information 2-17; Exit Sensor Service Check
4026-0XX Diagnostic Information 2-17 Exit Sensor Service Check Fan Service Check FRU Action 1 Engine Board Disconnect the exit sensor cable from theengine board. Check for +4.5 V dc to +5.5 V dcat CN8-1. If incorrect, replace the engine board. 2 Exit Sensor Be sure the exit sensor is snapped in plac...
Page 40 - Cold Fuser Service Check; If all the Cold Fuser Service Check items are correct, go to the
4026-0XX 2-18 Cold Fuser Service Check If all the Cold Fuser Service Check items are correct, go to the “Hot Fuser Service Check” on page 2-20 Note: Toner buildup on the fuser input guide, paper separator, hotroll and backup roll causes paper jams. When toner is partially fused to the paper it is us...
Page 41 - Diagnostic Information 2-19
4026-0XX Diagnostic Information 2-19 3 Thermistor If the fuser lamp comes on and a fuser failureLED error code displays, be sure the thermistoris contacting the hot roll and the thermistorcable is firmly seated in connector CN2 on theengine board. Check for excessive toner buildup on the surfaceof t...
Page 42 - “Paper Feed Service Check” on page 2-34
4026-0XX 2-20 Hot Fuser Service Check Note: If you replace the fuser assembly for overheating, alsoreplace the engine board. CAUTION: FUSER PARTS MAY BE HOT. Input Sensor Service Check If the paper never leaves the tray or fails to be picked from the tray,go to the “Paper Feed Service Check” on page...
Page 43 - Diagnostic Information 2-21
4026-0XX Diagnostic Information 2-21 3 Input SensorFlag Check the flag for damage, especially at thefront edge, Be sure the flag moves freely.Replace the flag as necessary. 4 Input Sensor Be sure the input sensor is correctly installedand the sensor/solenoid cable is properly con-nected. Disconnect ...
Page 44 - Low Voltage Power Supply Service Check; Check and reseat all cables.; Dead Printer
4026-0XX 2-22 Low Voltage Power Supply Service Check Note: The controller board, HVPS and printhead assembly receivepower from the LVPS through the engine board. If the machine is dead, be sure the controller board is correctlyseated in the engine board connector. Check and reseat all cables. Dead P...
Page 46 - Fuse F1 continues to open after being replaced
4026-0XX 2-24 Fuse F1 continues to open after being replaced FRU Action 1 Fuse F1 If fuse F1 continues to open after beingreplaced, disconnect CN7 from the engineboard and turn the printer power on. If F1 opens,replace the LVPS. If F1 does not open with CN7 disconnected,check the following: Turn the...
Page 47 - Diagnostic Information 2-25; Main Drive Motor Service Check
4026-0XX Diagnostic Information 2-25 Main Drive Motor Service Check FRU Action 1 Main DriveMotor Disconnect CN6 from the engine board. Checkthe motor for shorts between each pin on CN2and the motor case. If continuity is indicated,replace the motor. Check the resistance between the following pinson ...
Page 49 - Diagnostic Information 2-27; Operator Panel Service Check
4026-0XX Diagnostic Information 2-27 Operator Panel Service Check FRU Action 1 OperatorPanel Assem-bly LEDsBe sure the operator panel cable is properlyseated in J5 on the controller board. Run POST and check each LED for properoperation. If more than one LED does not light or an indi-vidual LED stay...
Page 50 - Optional Paper Tray Two Service Check; Check the following before servicing tray two:; Wrinkled or damaged paper
4026-0XX 2-28 Optional Paper Tray Two Service Check Check the following before servicing tray two: • Be sure tray one is working correctly. • Be sure the second paper tray is correctly installed and the sec-ond paper tray connector on the base printer properly contactsthe second paper tray connector...
Page 51 - Diagnostic Information 2-29
4026-0XX Diagnostic Information 2-29 2 Paper LiftPlate Assem-bly Check the lift plate assembly, release button,button spring, release arm and all related hard-ware for proper operation. Be sure the lift plateD-roll pad mounted on the top of the lift plate isnot worn, contaminated or missing. Repair ...
Page 53 - Diagnostic Information 2-31
4026-0XX Diagnostic Information 2-31 Paper Tray Two selected in the application. Paper does not feedfrom Tray Two but instead feeds from Tray One. Tray Two reset toTray One in printer utility. FRU Action 1 Engine Board Be sure the voltage at CN9-8 on the engineboard measures approximately 0 V dc. If...
Page 54 - Paper Take-Up Solenoid Service Check
4026-0XX 2-32 Paper Take-Up Solenoid Service Check FRU Action 1 Solenoid Be sure the solenoid/engine board cable isfirmly seated in connector CN3 on the engineboard. Be sure the solenoid cable is firmly seated in thesolenoid/engine board cable connector at thesolenoid. Check the solenoid for proper ...
Page 55 - Diagnostic Information 2-33
4026-0XX Diagnostic Information 2-33 2 Engine Board Disconnect the solenoid/input sensor cable fromCN3 on the engine board. Check the voltage atCN3-5. The voltage should measure approxi-mately +24 V dc. If incorrect, replace the engineboard. If the voltage reads approximately +24 V dc,check the volt...
Page 59 - Diagnostic Information 2-37; Paper Feed Frame Assembly Service Check
4026-0XX Diagnostic Information 2-37 Paper Feed Frame Assembly Service Check 3 Paper FeedExit Shaft/RollerAssembly Check the paper feed exit shaft, rollers, andgear for proper operation. Repair as necessary. 4 Paper FeedExit ShaftGround Ter-minal Be sure the paper feed exit shaft ground termi-nal is...
Page 60 - Print Quality Service Check; Set the print darkness setting to normal.
4026-0XX 2-38 Print Quality Service Check Before you perform the Print Quality Service Check, do thefollowing: • The toner cartridge can cause a variety of print quality prob-lems. Be sure the toner cartridge is in good condition, workscorrectly, and is not low on toner. If in doubt, install a new t...
Page 62 - White or Black Lines or Bands
4026-0XX 2-40 White or Black Lines or Bands Note: Poor image development, incorrect charging of the photocon-ductor, incorrect laser exposure, poor image transfer, or poor fusingcauses white/black bands or lines. 2 Cables/Con-nectors Be sure the printhead cables to the engineboard are properly seate...
Page 66 - Registration Service Check; Note: Use the Service Test Page to check the registration.; Transfer Assembly Service Check
4026-0XX 2-44 Registration Service Check Note: Use the Service Test Page to check the registration. Transfer Assembly Service Check Note: The transfer assembly left and right transfer bracket springsbias the transfer assembly toward the photoconductor unit. Be surethe transfer assembly is free to mo...
Page 67 - Diagnostic Information 2-45; Transfer Corona Service Check
4026-0XX Diagnostic Information 2-45 Transfer Corona Service Check ROM SIMM Service Check FRU Action 1 TransferCorona Be sure the transfer corona is clean. Clean withthe transfer cleaning tool located on the upperfuser cover. Check the high voltage contacts for pitting, con-tamination, or damage. Be...
Page 70 - Diagnostic Tests; Printer Diagnostic Test
4026-0XX 3-3 Diagnostic Tests Printer Diagnostic Test The following tests run sequentially when performing this test: Standard Memory Test Optional Memory Test Microcode Check LED Test Read/Write ASIC Register Test Read/Write ASIC SRAM Test Read/Write controller board SRAM Test Perform the following...
Page 71 - Service Diagnostic Test Page
4026-0XX Diagnostic Aids 3-4 Service Diagnostic Test Page The service diagnostic test page includes registration marks to aid inadjusting print registration and also includes the installed printerbase code level. The service test page displays the user defaultvalues for the following: Top Margin Off...
Page 73 - User Mode Print Test Page; Press and release the operator panel button.
4026-0XX Diagnostic Aids 3-6 User Mode Print Test Page The User Mode Print Test Page displays the user default values,installed options, printer features, various typefaces, and theinstalled printer base code level. 1. Be sure the Ready LED is on solid (printer is in the ready state). 2. Press and r...
Page 75 - Paper Feed Timing
4026-0XX Diagnostic Aids 3-8 Paper Feed Timing The following describes the timing of paper flow through the printerto aid in diagnosing paper jam problems. Detection of paper in theprinter paper feed path is accomplished by the low or high statuscondition of the paper entry and paper exit sensors. T...
Page 76 - Fuser Operation; Fuser Control
4026-0XX 3-9 Fuser Operation Fuser Control The thermistor detects the hot roll temperature and sends acorresponding analog signal to the engine board. The engine boardturns the lamp on or off depending on the analog signal from thethermistor. If the thermistor detects a high temperature failure but ...
Page 77 - Configuration Mode; Configuration Mode Operator Panel Overlay
4026-0XX Diagnostic Aids 3-10 Configuration Mode The configuration mode gives the ability to set the following printerfunctions through the operator panel: Hex Trace NPA Mode (Parallel) Parallel Protocol Advanced Status PPDA Activated Auto CRLF/LFCR Perform the following steps to enter the configura...
Page 78 - Operator Panel Configuration Mode Button Definition
4026-0XX 3-11 Operator Panel Configuration Mode Button Definition Term Description Result Brief Button Press Press the operatorpanel button no longerthan three seconds. This action movesthrough the configura-tion mode value list. Long Button Press Press and hold theoperator panel buttonfor more than...
Page 79 - Perform the following steps to enter the Hex Trace mode:
4026-0XX Diagnostic Aids 3-12 Hex Trace Use Hex Trace to isolate the cause of print problems. When a job isprinted, the printer operator panel displays the Hex Trace indication,(Ready LED blinking), showing that the printer remains in the HexTrace mode. Turn the printer power off or do a front panel...
Page 80 - Restoring Factory Defaults
4026-0XX 3-13 Restoring Factory Defaults Restoring factory defaults returns the printer settings to the originalfactory 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. The printer starts POST. 4. Th...
Page 81 - Repair Information 4-1; Repair Information; WARNING: Read the following before handling electronic parts.; Handling ESD-Sensitive Parts
4026-0XX Repair Information 4-1 4. Repair Information WARNING: Read the following before handling electronic parts. Handling ESD-Sensitive Parts Many electronic products use parts that are known to be sensitive toelectrostatic discharge (ESD). To prevent damage to ESD-sensitiveparts, follow the inst...
Page 82 - Adjustment Procedures; Print Registration Adjustment
4026-0XX 4-2 Adjustment Procedures CAUTION: Be sure to unplug the power cord whenever you areworking on the printer with one of the covers removed. Print Registration Adjustment Print the service diagnostic test page after you replace the engineboard. Check the position of the bottom left and right ...
Page 83 - Repair Information 4-3; Removal Procedures; Screw Identification Table
4026-0XX Repair Information 4-3 Removal Procedures CAUTION: Be sure to unplug the power cord whenever you areworking on the printer with one of the covers removed. Use caution when the photoconductor unit is out of the machine. Donot expose it to light for more than 15 - 20 minutes. Screw Identifica...
Page 84 - Input Paper Tray
4026-0XX 4-4 Board Cage Removal 1. Remove the controller board. 2. Remove the engine board. 3. Remove the two remaining screws that hold the board cage to the mainframe. 4. Note the way the cables are routed to the engine board before removing the board cage. 5. Remove the board cage. Cover Removals...
Page 85 - Controller Board Removal
4026-0XX Repair Information 4-5 Top Cover 1. Unplug the power cord from the machine. 2. Remove the toner cartridge and P.C. drum. 3. Remove the left, right, and front covers. 4. Disconnect CN7, CN11, CN2, and CN8 from the engine board. 5. Remove the fuser lamp cable cover. 6. Remove the cable cover ...
Page 87 - Repair Information 4-7; Exit Paper Feed Roller Assembly Removal
4026-0XX Repair Information 4-7 Exit Paper Feed Roller Assembly Removal 1. Remove the transfer assembly. 2. Remove the fuser upper and lower frame assemblies. 3. Note the orientation of the notches in the left and right bushings. Reinstall with the notches facing away from the top cover. 4. Be sure ...
Page 89 - Repair Information 4-9; HVPS Board Removal
4026-0XX Repair Information 4-9 HVPS Board Removal 1. Unplug the power cord from the machine. 2. Remove the HVPS cover. 3. Disconnect CN1 from the HVPS board. 4. Disconnect the transfer assembly high voltage connector from T1 on the HVPS board. 5. Disconnect the red transfer assembly wire at TRET on...
Page 91 - Repair Information 4-11; Operator Panel Removal
4026-0XX Repair Information 4-11 Operator Panel Removal 1. Unplug the power cord from the machine. 2. Remove the toner cartridge and P.C. drum. 3. Disconnect the operator panel cable from the controller board. 4. Loosen the front operator panel mounting screw from the board cage. 5. Remove the rear ...
Page 93 - Repair Information 4-13; Paper Separator Removal
4026-0XX Repair Information 4-13 Paper Separator Removal 1. Remove the paper feed input tray assembly. 2. Remove the lift plate assembly. 3. Remove the manual feed guide plate. 4. Remove the engine board. 5. Remove the controller board. 6. Remove the paper feed frame assembly. 7. Use a screwdriver t...
Page 95 - Repair Information 4-15; Remove the transfer cable cover screw and transfer cable cover.
4026-0XX Repair Information 4-15 Models 4026-06C, 06F and 071 1. Open the top cover. 2. Remove the transfer cable cover screw and transfer cable cover. 3. Remove the two screws that hold the transfer unit to the rear of the top cover. 4. Unplug the wire to the transfer roll assembly. Pay attention t...
Page 96 - Connector Locations 5-1; Connector Locations; Low Voltage Power Supply
4026-0XX Connector Locations 5-1 5. Connector Locations Low Voltage Power Supply Connector Pin No. Signal CN1 Engine Board 1 +24 V dc 2 GND 3 GND 4 +5 V dc 5 FUSER LAMP* CN2 Fuser Lamp/Thermal Fuse 1 HEAT N 2 NO CONNECTION 3 HEAT L
Page 97 - Connector Locations 5-2; High Voltage Power Supply
4026-0XX Connector Locations 5-2 High Voltage Power Supply Connector Pin No. Signal CN1 Engine Board 1 HV C 2 HV T* 3 HV SEL 2* 4 HV SEL 1* 5 HV B 6 BIAS MON 7 GND 8 +24 V dc T T HV to TRANSFERCORONA CHARGE TRET TRET HV to TRANSFERCORONA HOUSING
Page 99 - Connector Locations 5-4
4026-0XX Connector Locations 5-4 CN4A HVPS 1 HV C 2 HV T* 3 HV SEL2* 4 HV SEL1* 5 HV B 6 BIAS MON 7 GND 8 +24 V dc CN5A Laser DiodeDrive Board 1 S SCAN 2 CO 3 LD APC2 (LDVR2) 4 LD APC1 (LDVR1) 5 GND 6 L DATA* 7 +5 V dc CN6A Main Motor 1 PHASE A 2 PHASE A* 3 PHASE B 4 PHASE B* CN7A LVPS 1 +24 V dc 2 ...
Page 101 - Connector Locations 5-6
Page 102 - Controller Board
4026-0XX 5-7 Second Paper Tray Sensor Board (Option) Controller Board Connector Pin No. Signal CN1A Engine Board 1 CHECK2* 2 CHECK1* 3 CHECK0* 4 MM/INCH 5 2NDBIN* 6 PSIZEO 7 P EMP 2 8 GND 9 +5 V dc 10 NO CONNECTION 11 FEED2* 12 +24 V dc CN3A Paper Take-upSolenoid - 2nd PaperTray (Option) 1 +24 V dc ...
Page 103 - Connector Locations 5-8
4026-0XX Connector Locations 5-8 J4 Engine Board Pin No. Signal Pin No. Signal 1 NO CONNECTION 16 CMD 2 NO CONNECTION 17 CTBSY 3 NO CONNECTION 18 PRINT 4 NO CONNECTION 19 SRCLK 5 GND 20 GND 6 RESET* 21 GND 7 GND 22 R VIDEO* 8 GND 23 +5 V dc 9 GND 24 GND 10 RHSYNC* 25 +5 V dc 11 EPRDY* 26 GND 12 PRRD...
Page 105 - Connector Locations 5-10
Page 107 - How To Use This Parts Catalog; INDENTURE RELATIONSHIP OF PARTS
4026-0XX Parts Catalog 6-1 6. Parts Catalog How To Use This Parts Catalog • SIMILAR ASSEMBLIES: If two assemblies contain a majority ofidentical parts, they are broken down on the same list. Commonparts are shown by one index number. Parts peculiar to one orthe other of the assemblies are listed sep...
Page 118 - Assembly 3: Printhead
Page 120 - Assembly 4: Paper Feed Input Tray
Page 122 - Assembly 5: Paper Feed Frame
Page 128 - Assembly 7: Electronics
Page 132 - Assembly 8: Transfer Assembly
Page 141 - Assembly 11: Miscellaneous
4026-0XX Parts Catalog 6-35 Assembly 11: Miscellaneous Asm-Index PartNumber Units Description 11 69G9986 1 Parts Packet, C-Clips for printer and SecondPaper Drawer 11 69G9987 1 Parts Packet, Springs 11 69G9988 1 Parts Packet, Fuser Gears 11 69G9989 1 Parts Packet, Paper Feed Gears 11 69G9974 1 Parts...
Page 142 - Index
X-1 4026-0XX Index A Acronyms 1-2 Adjustment Procedure 4-2 Print Registration 4-2 C Configuration Mode 3-10 Connector Locations Controller Board 5-7 Engine Board 5-3 High Voltage Power Supply 5-2 Low Voltage Power Supply 5-1 Paper Entry Sensor 5-11 Paper Exit Sensor 5-11 Paper Feed Solenoid 5-11 Sec...
