Page 1: Infoprint 1120 And
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Page 2: Table Of Contents
Infoprint 1120 and 1125 Contents Notices and Safety Information ..... . . ix Laser Notices........ix Safety Information .
Page 3 Infoprint 1120 and 1125 Transfer Roll Service Check ..... 2-103 Diagnostic Aids ........3-1 Diagnostic Mode .
Page 4 Infoprint 1120 and 1125 Fuser Operation........3-27 Paper Feed Jams .
Page 5 Infoprint 1120 and 1125 Multipurpose Tray/Lower Deflector Assembly Removal . 4-45 Operator Panel Assembly Removal....4-47 Operator Panel Cable/Cover Switch Removal..4-48 Optional 250/500 Paper Tray Assembly Removal.
Page 6 Infoprint 1120 and 1125 Assembly 8: Integrated Paper Tray - 500 Sheet ..7-18 Assembly 9: Main Drive ......7-20 Assembly 10: Developer Drive .
Page 7 Infoprint 1120 and 1125 viii Service Manual...
Page 8: Notices And Safety Information
Infoprint 1120 and 1125 Notices and Safety Information Laser Notices The following laser notice labels may be affixed to this printer as shown: Laser Advisory Label Notices and Safety Information...
Page 9 Infoprint 1120 and 1125 Class 1 Laser Statement Label Service Manual...
Page 10: Laser Notice
Infoprint 1120 and 1125 Laser Notice The printer is certified in the U.S. to conform to the requirements of DHHS 21 CFR Subchapter J for Class I (1) laser products, and elsewhere is certified as a Class I laser product conforming to the requirements of IEC 60825.
Page 11 Infoprint 1120 and 1125 Avis relatif à l’utilisation de laser Pour les Etats-Unis : cette imprimante est certifiée conforme aux provisions DHHS 21 CFR alinéa J concernant les produits laser de Classe I (1). Pour les autres pays : cette imprimante répond aux normes IEC 60825 relatives aux produits laser de Classe I.
Page 12 Infoprint 1120 and 1125 Avisos sobre el láser Se certifica que, en los EE.UU., esta impresora cumple los requisitos para los productos láser de Clase I (1) establecidos en el subcapítulo J de la norma CFR 21 del DHHS (Departamento de Sanidad y Servicios) y, en los demás países, reúne todas las condiciones expuestas en la norma IEC 60825 para productos láser de Clase I (1).
Page 13 Infoprint 1120 and 1125 Laserinformatie De printer voldoet aan de eisen die gesteld worden aan een laserprodukt van klasse I. Voor de Verenigde Staten zijn deze eisen vastgelegd in DHHS 21 CFR Subchapter J, voor andere landen in IEC 60825. Laserprodukten van klasse I worden niet als ongevaarlijk aangemerkt.
Page 14 Infoprint 1120 and 1125 Huomautus laserlaitteesta Tämä kirjoitin on Yhdysvalloissa luokan I (1) laserlaitteiden DHHS 21 CFR Subchapter J -määrityksen mukainen ja muualla luokan I laserlaitteiden IEC 60825 -määrityksen mukainen. Luokan I laserlaitteiden ei katsota olevan vaarallisia käyttäjälle. Kirjoittimessa on sisäinen luokan IIIb (3b) 5 milliwatin galliumarsenidilaser, joka toimii aaltoalueella 770 - 795 nanometriä.
Page 15 Infoprint 1120 and 1125 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 Klasse I-laserprodukt i samsvar med kravene i IEC 60825. Klasse I-laserprodukter er ikke å...
Page 16 Infoprint 1120 and 1125 Japanese Laser Notice Chinese Laser Notice xvii Notices and Safety Information...
Page 17: Safety Information
This product is designed, tested and approved to meet strict global safety standards 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. •...
Page 18 Lexmark spécifiques. Les caractéristiques de sécurité 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...
Page 19 Lexmark. Puede que las características de seguridad de algunas piezas no sean siempre evidentes. Lexmark no se hace responsable del uso de otras piezas de recambio. •...
Page 20 Este produto foi concebido, testado e 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.
Page 21: Ozone Information
Infoprint 1120 and 1125 Chinese Safety Information Korean Safety Information Ozone Information This product does not produce measurable amounts of ozone gas. xxii Service Manual...
Page 22: Preface
Infoprint 1120 and 1125 Preface This manual is divided into the following chapters: • “General Information” contains a general description of the printer, options, and the maintenance approach used to repair it. General environmental and safety instructions as well as special tools and test equipment are listed in this chapter.
Page 23 Infoprint 1120 and 1125 xxiv Service Manual...
Page 24: General Information
The Lexmark T laser printers are letter quality page printers designed to attach to IBM-compatible personal computers and to most computer networks. The Lexmark T laser printers are available in the following models: Model Name Type IBM Model IBM Name...
Page 25: Options
400 Sheet UAT (Universally Adjustable Tray) 2000 Sheet High Capacity Feeder Envelope Feeder Duplex Unit - 250 Sheet (For T520 & T520n) Duplex Unit - 500 Sheet (For T522 & T522n) Hard Disk - 5.0 & GB Forms Hard Disk - 5.0 & GB or Larger...
Page 26: Maintenance Approach
Infoprint 1120 and 1125 Maintenance Approach The diagnostic information in this manual leads you to the correct field replaceable unit (FRU) or part. Use the service error codes, user status messages, user error messages, service checks, and diagnostic aids to determine the printer problem and repair the failure.
Page 27: Acronyms
Infoprint 1120 and 1125 Acronyms Customer Setup DRAM Dynamic Random Access Memory Enhanced Data Out Electrophotographic Process EPROM Erasable, Programmable Read-Only Memory Electrostatic Discharge Field Replaceable Unit Gigabyte HVPS High Voltage Power Supply LASER Light Amplification by Stimulated Emission of Radiation Liquid Crystal Display Light-Emitting Diode LVPS...
Page 28: Diagnostic Information
Infoprint 1120 and 1125 2. Diagnostic Information Start CAUTION: Remove the power cord from the printer or wall outlet before you connect or disconnect any cable or electronic board or assembly for personal safety and to prevent damage to the printer. Use the handholds on the side of the printer.
Page 29: Service Error Codes
Error Code Action 900 RIP Software Contact the next support level or call Lexmark. 901 Engine Flash Indicates that the flash which the engine board code is programmed into is bad. Replace the engine board.
Page 30 Infoprint 1120 and 1125 Error Code Action 914 DC Pick Check the integrated paper tray (tray 1) for correct paper Motor: No loading. Reload the paper and POR the printer. If the encoder error continues, go to the “Input Tray(s) Service Check” feedback on page 2-62.
Page 31 Infoprint 1120 and 1125 Error Code Action 931-935 These errors represent a problem with the printhead. Go Printhead Error to the “Printhead Service Check” on page 2-87. 932 - Printhead: Lost Hsync 933 - Mirror Motor Locks/Lost Hsync 934 - Mirror Motor Lost Lock 935 - Mirror Motor unable to reach...
Page 32 Infoprint 1120 and 1125 Error Code Action 940 Service LV The low voltage power supply zero crossover test failed. Power Supply • Check the LVPS for correct installation. Ensure that the connector on the LVPS assembly is firmly seated with the connector on the interconnect card connector. This error may also be caused by a noisy AC input power source.
Page 33 Infoprint 1120 and 1125 Error Code Action 956 Configuration Indicates a problem with the Configuration ID. This error occurs because the engine received a configuration ID from the controller software which is not valid for the level of engine code existing in the printer. Setting the configuration ID correctly should fix this error.
Page 34 Infoprint 1120 and 1125 Error Code Action 980 <device> The engine is experiencing unreliable communications Comm to the specified device. 981 <device> The engine protocol violation detected by the specified device. 982 <device> Communications error detected by the specified device. Comm 983 <device>...
Page 35 Infoprint 1120 and 1125 Sub Error Codes for 9XX and 2XX Error Codes The sub error codes are helpful troubleshooting a paper path problem, especially paper jams in the base printer, envelope feeder and duplex unit. When a 9XX or 2XX error displays, press and hold Return and press Select to enter for sub error codes.
Page 36 Infoprint 1120 and 1125 Base Printer Sub Error Codes Each status byte has a different level of troubleshooting value for each area of the printer. The following table displays up to 8 status bytes of data. Some or all of these bytes may be used to help diagnose a printer problem.
Page 37 Infoprint 1120 and 1125 First 6 Bytes Sub Error Code Explanation Data - Note: xx can be any value. 84 xx 02 x1 This error is the most common type of paper jam. Possible causes are (x1=media size): *Multi sheet feeding. *A tray size sensing problem.
Page 38 Infoprint 1120 and 1125 First 6 Bytes Sub Error Code Explanation Data - Note: xx can be any value. 84 xx 0f x1 The option Tray pass thru sensor was never deactivated. x2 x3 (x-1=media size) (x-2=media source) (x-3=media source where paper jam was detected) *Check the pass thru sensor and flag for correct operation.
Page 39 Infoprint 1120 and 1125 First 6 Bytes Sub Error Code Explanation Data - Note: xx can be any value. 84 xx 1A There is media over the Tray 4 pass thru sensor during warm-up. Check for media over the sensor. If no media is present, check the pass thru sensor, flag, and cables.
Page 40 Infoprint 1120 and 1125 First 6 Bytes Sub Error Code Explanation Data - Note: xx can be any value. 84 xx 20 x1 The imaged page is not the expected page. (x1=Media Size, x2=Media Source) Check the pass thru sensor to make sure it is operating properly.
Page 41 Infoprint 1120 and 1125 First 6 Bytes Sub Error Code Explanation Data - Note: xx can be any value. 89 00 01 The exit sensor in the fuser is activated by a piece of media indicating there is a piece of media in the machine during POST.
Page 42 Infoprint 1120 and 1125 First 6 Bytes Sub Error Code Explanation Data - Note: xx can be any value. 89 xx 0D The fuser exit sensor bounced. Check the exit sensor for correct operation. Check the fuser DC cable to J14 on the system board.
Page 43 Infoprint 1120 and 1125 First 6 Bytes Sub Error Code Explanation Data - Note: xx can be any value. 8E x1 0B The DC auto compensator failed or stalled when trying to feed a sheet of media. 8E xx 11 It took too long for the DC auto compensator motor to come up to speed.
Page 44 Infoprint 1120 and 1125 Base Printer (Fuser) Sub Error Codes The following Sub Error Codes could be a help in diagnosing Fuser Assembly failures: First 6 Bytes Sub Error Code Explanation Data - Note: xx can be any value 920 Service - Fuser Error (Under temperature while printing) EN 08 xx yy xx=Actual Fuser Temperature yy=The temperature that the fuser wants to reach.
Page 45 Infoprint 1120 and 1125 First 6 Bytes Sub Error Code Explanation Data - Note: xx can be any value EN 42 xx yy xx=Actual Fuser Temperature -- 1 yy=The temperature that the fuser wants to reach. EN z1 z2 -- - zz=00 The fuser temperature did not change enough from the fuser lamp temperature at turn on.
Page 46 Infoprint 1120 and 1125 First 6 Bytes Sub Error Code Explanation Data - Note: xx can be any value 925 Service - Fuser Error (Wrong Fuser Lamp Installed) Note: The Sub Error Codes below are only for an incorrect lamp being installed.
Page 47 Infoprint 1120 and 1125 First 6 Bytes Sub Error Code Explanation Data - Note: xx can be any value 84 xx 1D x1 The envelope feeder pass thru sensor activated but never deactivated. (x1=Media Size)(x2=Media Source) This error can be caused by an envelope over the pass thru sensor.
Page 48 Infoprint 1120 and 1125 Duplex Unit Sub Error Codes Status byte 4 contains the most valuable information to help isolate a failing part or assembly in the duplex unit and is the only byte contained in the following table. Status Explanation Byte 4 No duplex error.
Page 49: User Status Messages
Infoprint 1120 and 1125 User Status Messages User Status Message Status Action Ready The printer is ready to Press Menu to take receive and process the printer out of data. Ready and enter all the Menus except the TESTS MENU (Busy state).
Page 50 Infoprint 1120 and 1125 User Status Message Status Action Printing Menu Settings The printer is processing Press Stop to take the or printing a list of printer out of Ready. current settings menus The Not Ready because Print Menu message is displayed. Settings is selected from No more data is the menu.
Page 51 Infoprint 1120 and 1125 User Status Message Status Action Restoring Factory The printer is restoring No button actions are Defaults factory defaults. possible while this message is displayed. Performing Self Tests The printer is running No button actions are the normal series of possible while this start-up tests after it is message is displayed.
Page 52: User Error Messages
Infoprint 1120 and 1125 User Status Message Status Action Programming Disk The disk is being No button actions are (Do Not Power Off) programmed, which possible while this means fonts or macros message is displayed. are being written to disk. Note: If information is written to flash memory and to disk at...
Page 53 Infoprint 1120 and 1125 User Error Message Explanation 230 Paper Jam The paper is most likely jammed in the Duplex Check Duplex Unit. Remove the duplex front cover to access the jam area. If the paper is jammed in the rear of the duplex, then replace the duplex front cover and open the duplex rear door.
Page 54 Infoprint 1120 and 1125 User Error Message Explanation 32 Unsupported Print Error 32 is displayed when the top cover is closed Cartridge and an unsupported print cartridge is detected. It may take the printer 10-20 seconds to determine if the print cartridge is supported. Depending on the setting of the Machine Class ID the printer may be allowed to print pages during this 10-20 second interval.
Page 55 Infoprint 1120 and 1125 User Error Message Explanation 52 Flash Full This message is displayed when there is not enough free space in the flash memory to hold the resources that have been requested to be written to flash. 53 Unformatted Flash This message is displayed when the printer detects an unformatted flash at power on.
Page 56 Infoprint 1120 and 1125 User Error Message Explanation 62 Disk Full This error code is displayed when there is not enough free space on the disk to hold the resources that have been requested to be written to the disk. This message displays for both resource and PostScript Disk operators when the disk is full.
Page 57 Infoprint 1120 and 1125 User Line 2 Messages If none of the conditions exist that are listed in the following table, line 2 is blank. If any of the messages in the table are displayed the following actions can be taken: Press Menu to take the printer offline and access the Ready Menu group.
Page 58 Infoprint 1120 and 1125 User Message Explanation Tray X Empty If any of the input trays are empty, then “Tray X Empty” displays where X designates which tray (Tray 1 through 5) is empty. If multiple trays are empty, then they are prioritized in this order: Tray 5, Tray 4,...Tray 1.
Page 59 Infoprint 1120 and 1125 User Line 2 Link Messages If the printer is locked on a particular link, the link indication displays. If the printer is ready to process any link, no messages display. Link messages are listed in the following table. User Message Explanation Parallel...
Page 60 Infoprint 1120 and 1125 Check Device Connection Messages The messages in the following table display when the printer looses communications with one of the following devices. User Status Message Explanation Check Env Feeder Check Envelope Feeder Connection. Connection Check Tray X Check Tray X (X=1,2,3,4 or 5).
Page 61 Infoprint 1120 and 1125 User Status Message Explanation Turn Printer OFF to Enable This message displays when a printer option, Option Input Tray, or Envelope Feeder, has been attached while the printer is powered on. To use the option, the printer must first be powered off and back on again.
Page 62: Power-On Self Test (Post)
Infoprint 1120 and 1125 Power-On Self Test (POST) When you turn the printer on, it performs a Power-On Self Test. Check for correct POST functioning of the base printer by observing the following: 1. The LED comes on. 2. The operator panel displays one and a half row of pels, and then clears.
Page 63: Symptom Tables
Infoprint 1120 and 1125 Symptom Tables Symptom Table - Base Printer Symptom Action Dead Machine Go to the “Dead Machine Service Check” on page 2-43. Operator Panel - One or more Go to the “Operator Panel Buttons buttons do not work. Service Check”...
Page 64 Infoprint 1120 and 1125 Symptom Action Print quality - Skew Go to the “Paper Feed Service Check” on page 2-84. Print quality - Banding Go to the “Print Quality - Banding” on page 2-96. Print quality - Random marks Go to the “Print Quality - Random Marks”...
Page 65 Infoprint 1120 and 1125 Symptom Table: Paper Trays Symptom Action Paper feed problem with 250 Go to the “Input Tray(s) Service Sheet Paper Tray. Check” on page 2-62. Paper feed problem with 500 Sheet Paper Tray. Media fails to pass thru from the lower attached Paper Tray option to the next higher mounted option.
Page 66: Service Checks
Infoprint 1120 and 1125 Service Checks Note: Anytime the engine board is replaced, the Configuration ID must be reset in NVRAM on the new engine board. Go to “Setting Configuration ID” on page 3-20. Review the following information before performing any service checks.
Page 67: Charge Roll Service Check
Infoprint 1120 and 1125 Charge Roll Service Check Service Tip: Close and evenly spaced repetitive marks 47.19 mm (1.86 inch) apart or spots on the page can be caused by a damaged or contaminated charge roll. Service Tip: Check to make sure the right charge roll arm bushing is correctly installed and operates correctly.
Page 68 Infoprint 1120 and 1125 Action Right Side Charge Roll Link Check the right side charge roll link Right Charge Roll Bushing assembly for correct assembly operation. If incorrect, replace the charge roll link assembly with the charge roll link assembly kit. If correct, check the right charge roll link assembly bearing for signs of wear or contamination.
Page 69: Cover Open Switch/Cable Service Check
Infoprint 1120 and 1125 Cover Open Switch/Cable Service Check Action Toner Cartridge Check the toner cartridge to make sure it is correctly installed and that the right and left cartridge tracks are not loose or broken. Check to make sure the cover open switch activation tab on the toner cartridge is not broken and that the tab correctly activates the cover open...
Page 70: Dead Machine Service Check
Infoprint 1120 and 1125 Dead Machine Service Check Note: If a high-capacity input tray is installed, remove the option and check the base printer for correct operation. If the base printer operates correctly, go to “High-Capacity Feeder Input Tray Service Check”...
Page 71 Infoprint 1120 and 1125 Action LVPS Fuse F1 - Continues Replace fuse F1 if necessary. Turn to blow after LVPS installed the LVPS on/off switch off and in the printer. connect the AC line cord and turn the LVPS on. CAUTION: Before checking fuse F1 turn the LVPS Off and disconnect the AC line cord.
Page 72: Duplex Unit Service Check
Infoprint 1120 and 1125 Duplex Unit Service Check The printer does not recognize the Duplex Unit is attached. The printer does not recognize tray options below the duplex unit are installed. Action Fuse F1 on Duplex Unit If fuse F1 is blown, replace the fuse. System Board If fuse F1 continues to blow, check the stepper motor for a short...
Page 73 Infoprint 1120 and 1125 POST fails, 230 Paper Jam, Check Duplex message displays. Action Duplex D.C. Servo Drive Check the D.C. servo motor cables Motor for signs of cuts or other damage. Check the D.C. servo motor sensor cable connector for pin damage. If no problem is found, replace the FRUs in the following order: 1.
Page 74 Infoprint 1120 and 1125 230 Paper Jam - Check Duplex message displays. The page is not duplexed and only exits half way out of the redrive. Action Duplex Stepper Motor Check the stepper motor cable for cuts or pinched wiring. Check the routing of the motor leads along the left side of the bottom tray.
Page 75: Envelope Feeder Service Check
Infoprint 1120 and 1125 Envelope Feeder Service Check Service Tip: Check the envelope feeder paper path for any debris, pieces of envelope and so on. If any other options are installed make sure they are operating normally. If only the envelope feeder is failing to operate correctly, continue with this service check, otherwise verify the interconnect card is functioning properly.
Page 76 Infoprint 1120 and 1125 Action Autoconnect on the Check for any signs of damage to Envelope Feeder. the connector or contacts. If you find damage, replace the damaged cable/connector assembly. Disconnect the autoconnect cable at J1 on the envelope system board and measure the following voltages: J1-3 measures +5 V dc J1-5 measures +5 V dc...
Page 77 Infoprint 1120 and 1125 Operator panel displays 260 Paper Jam immediately when envelope feed is requested - POST incomplete. Action Pass thru Sensor Check for any debris, pieces of envelope and so on over the pass thru sensor. Check for correct installation of the pass thru sensor flag.
Page 78 Infoprint 1120 and 1125 Operator panel displays 260 Paper Jam after attempted feed but before envelopes are put in the hopper OR the operator panel continues to display "Load Envelopes" after envelopes are placed in the hopper. Service Tip: The kick rolls rotate during the attempted feed cycles. Action Envelope Out Hopper Check the envelope out sensor flag...
Page 79 Infoprint 1120 and 1125 990 Service Error, envelopes fail to feed from the hopper. Action D.C. Feed Motor Assembly Check the motor and motor cable for any signs of loose wires or poor connections. Check to make sure the motor cable is connected to the envelope system board.
Page 80 Infoprint 1120 and 1125 260 Paper Jam displays, unable to clear and envelopes fail to feed from the hopper. Kick rolls are rotating. Check the deflector gap adjustment before continuing this service check. Action Deflector Gap Adjustment Check the deflector gap adjustment. The adjustment may be too narrow.
Page 81 Infoprint 1120 and 1125 260 Paper Jam displays, envelope stops in feeder paper path. Action Kick Rolls/Feed Rolls/Drive Check all the rolls for any signs of Rolls oil, grease or other contamination. If you find a problem, clean the rolls. If this does not correct the problem, replace the envelope feeder.
Page 82 Infoprint 1120 and 1125 Main Fan Service Check Check the cable connections at J1 on the engine board and at the main fan assembly. The main fan runs continuously when the printer is powered on unless the printer is in the Power Saver mode. Action Main Fan Manually spin the fan and check that...
Page 83: Fuser Service Check
Infoprint 1120 and 1125 Fuser Service Check Cold Fuser Service Check Error codes 920, 921, and 922 may display for a cold fuser failure. A 920 error caused by low line voltage can sometimes be cleared by turning the machine off and then on again. A 925 service error indicates the wrong fuser lamp is installed.
Page 84 Infoprint 1120 and 1125 Action Fuser Lamp Remove the controller board. Run the Diagnostic Print Test and Fuser Top Cover Assembly observe the lamp through the left side frame. If the lamp does not come on, do the following: • Remove the redrive assembly. •...
Page 85 Infoprint 1120 and 1125 Hot Fuser Service Check Error Code 923: Indicates the fuser is too hot during printing or when the printer is idle. Error code 924: Indicates an open circuit has been detected in the fuser thermistor circuit. Note: Check the fuser sub error codes to help diagnose between a 923 and 924 error.
Page 86 Infoprint 1120 and 1125 Action Engine Board Perform the print test with the RIP controller board removed. Check the voltage on J16-3 on the engine board. The voltage should measure approximately 1.6 V dc as the thermistor goes from cold to hot. If incorrect, replace the engine board.
Page 87: Fuser Solenoid Service Check
Infoprint 1120 and 1125 Fuser Solenoid Service Check Service Tip: Try changing the envelope enhance level setting. A different setting may correct the problem. Note: Check the fuser envelope conditioner solenoid adjustment as described in the adjustment section “Fuser Solenoid Adjustment” on page 4-3.
Page 88: Input Sensor Service Check
Infoprint 1120 and 1125 Input Sensor Service Check Service Tip: Run the Base Sensor Test. Check the input sensor for proper operation. The display changes from open to closed as the sensor flag is manually moved in and out of the sensor. Service Tip: Run a Diagnostic Print Test in the continuous mode with the controller board removed.
Page 89: Input Tray(S) Service Check
Infoprint 1120 and 1125 Input Tray(s) Service Check 250-Sheet and 500-Sheet Trays Service Tip: Try all the other input paper sources to make sure they are properly feeding paper. For 990 Error Code- Service Tray X, X= displays the number of the tray that has a problem or needs service.
Page 90 Infoprint 1120 and 1125 24X Paper Jam message displays, Paper jammed over the Pass Thru Sensor. (The printer displays the value of X for the paper tray where the error occurs. Example: 241 is a Paper Jam Tray 1) Action Pass Thru Sensor and Flag The tray x option system board did Assembly...
Page 91 Infoprint 1120 and 1125 Tray X Low message displays when Tray X is full or has adequate paper in the tray. Action Paper Low Sensor Run the Tray X Sensor Test and Assembly check the sensor for proper Paper Low Sensor Flag operation.
Page 92 Infoprint 1120 and 1125 Printer does not recognize Tray X is installed. Action Autoconect Cables Check the autoconnect from the Tray X System Board printer or option above tray x. Check for signs of cuts, pinched wiring or damage to the contacts in the connector.
Page 93: High-Capacity Feeder Input Tray Service Check
Infoprint 1120 and 1125 High-Capacity Feeder Input Tray Service Check Note: Voltage measurements in the high capacity feeder input tray service checks must be made with the high-capacity feeder attached to the base printer to obtain accurate results. Service Tip: Be sure the paper size switch is set to the correct paper size setting and the rear paper guides are in the correct locations for the size of paper installed in the high-capacity feeder tray.
Page 94 Infoprint 1120 and 1125 The base printer does not recognize that the high-capacity input tray is installed. Action High-Capacity Feeder Check the high capacity feeder input Autoconnect Mechanical tray to make sure it is mounted Check correctly and is not pushed down into the frame assembly or damaged.
Page 95 Infoprint 1120 and 1125 Action High Capacity Feeder Check the voltage on J8-1 (green). Option Control Board The voltage measures +24 V dc. If incorrect, check the autoconnect system for any problems. +24 V dc must come from the base printer through the autoconnect system to the high capacity input for the high capacity feeder to be recognized.
Page 96 Infoprint 1120 and 1125 24X Paper Jam message displays, Paper jammed over the Pass Thru Sensor. (X=The printer displays the value of X for the paper tray where the error occurs. Example: 242 is a Paper Jam Tray 2) Action Pass Thru Sensor and Flag The tray x option system board did Assembly...
Page 97 Infoprint 1120 and 1125 Tray X Paper Low Message displays when Tray X is full or has adequate Paper in the tray. Action Paper Low Switch Run the sensor diagnostics for tray X Paper Low Switch Cable (X=the number that represents the High Capacity Feeder Input high capacity input tray).
Page 98 Infoprint 1120 and 1125 The elevator tray fails to stop at the correct position and continues to drive into the bottom frame. Action Lower Limit Switch Check continuity of the lower limit Lower Limit Switch Cable switch. If incorrect, replace the switch.
Page 99 Infoprint 1120 and 1125 Paper from the high capacity feeder input tray does not reach the pass thru sensor. Service Tip: Be sure the paper in tray is within specifications. Action Autocompensator Check the autocompensator pick Assembly arm rollers for sign of glazing, toner or other buildup.
Page 100 Infoprint 1120 and 1125 The elevator moves in one direction only. Action DC Drive Motor Check the voltages at J1 on the high Assembly High capacity system board. The voltages Capacity Feeder measure as follows: System Board Static (Motor Not Running) J1-1 (Brown): approximately 0 V dc J1-2 (yellow): approximately 0 V dc Motor Running Forward...
Page 101 Infoprint 1120 and 1125 Paper size switch not selecting paper size that is selected. Action Paper Size Switch Check for continuity between the High Capacity Feeder common pin (J5-1) and the pin of the Option Control Board paper size selected. J5-1 (Black): Common Lead J5-2 (Blue) B5 J5-3 (Green) Executive...
Page 102 Infoprint 1120 and 1125 Tray X Empty message displays. Tray does not respond to loading paper. No response from the front door switch. Action High-Capacity Feeder Check the voltage on the board at Option Control Board J4-2 (green). The voltage measures approximately +5 V dc.
Page 103 Infoprint 1120 and 1125 Excessive Noise or Vibration Action DC Motor Assembly Check to make sure all the motor plate mounting screws are tight. Idler Pulley Check to make sure the idler pulley DC Motor Assembly is not binding on the pulley shaft. Check the pulley for any signs of wear.
Page 104: Main Drive Service Check
Infoprint 1120 and 1125 Main Drive Service Check Service Tip: Excessive gear or main drive assembly noise is usually caused by a defective motor assembly or engine board. Service Tip: If there are equally spaced horizontal lines across the page, go to “Print Quality - Evenly spaced horizontal lines or marks.”...
Page 105 Infoprint 1120 and 1125 Action Motor does not turn, no Check the voltages at J12 on the gear error code 936 or User engine board. message 201 Paper Jam displays. Pin number and voltage: J12-11 = +24 V dc J12-8 = +5 V dc (static) 0 V dc (when main drive motor running) J12-7= + 5 V dc (static) 0 V dc (when main drive motor running)
Page 106: Operator Panel Service Check
Infoprint 1120 and 1125 Operator Panel Service Check Operator Panel Buttons Service Check Note: Before continuing with this service check do the “Button Test” on page 3-11 in the diagnostic aids chapter. Action Operator Panel Assembly If any button fails the Button Test, replace the operator panel assembly.
Page 107 Infoprint 1120 and 1125 Action Operator Panel Cable Check for proper installation of the cable at the engine board (J11) and at the operator panel. Check the continuity of the operator panel cable. If incorrect, replace the cable. Operator Panel Display Check the voltage at J11-2 on the blank, 5 beeps, LED Off engine board.
Page 108: Options Service Check
Hard Disk Option Service Tip: The Lexmark T printers support one hard disk option. Check to make sure only one hard disk option is installed. Check to make sure the fixed disk and the fixed disk board are correctly installed.
Page 109 Infoprint 1120 and 1125 Note: The Quick Disk Test is a non-destructive test and indicates Pass or Fail. If the test fails, replace the hard disk. If a problem still exists, replace the hard disk board. “Disk Test/Clean” on page 3-3 is used to help restore the disk if the disk contains bad data and is unusable.
Page 110: Output Bin Sensor Standard Tray Service Check
Infoprint 1120 and 1125 Output Bin Sensor Standard Tray Service Check Service Tip: If the output bin standard tray fills up and the bin full sensor fails to post the message "Remove Paper Standard Bin," enter the Diagnostic Mode, select Output Bin Tests, select Sensor Tests and select Standard Bin.
Page 111: Paper Feed Service Check
Infoprint 1120 and 1125 Paper Feed Service Check If you have a 936 Transport Motor Error go to the “Main Drive Service Check” on page 2-77. Action Alignment Assembly Check to ensure the alignment assembly is correctly attached to the left side frame and the mounting screws are tight.
Page 112 Infoprint 1120 and 1125 Paper feed failures occur only near the top of the stack of paper. The most common cause of this problem is paper curl. Remove the paper from tray x and check for the natural curvature in the paper. Reinstall the paper in the correct manner.
Page 113: Parallel Port Service Check
Infoprint 1120 and 1125 Multipurpose Tray Paper fails to feed from the multipurpose tray. The pick roll should make one complete revolution and stop with the flat side down. If the pick roll turns but does not pick paper, check the roll for signs of wear, oil or grease on the surface of the pick roll or slick spots.
Page 114: Printhead Service Check
Infoprint 1120 and 1125 Printhead Service Check The printhead assembly does not contain any service replaceable parts or components. If service error code 930 displays, the wrong printhead is installed in the printer. Note: A 201 paper jam may also indicate a failing printhead. The paper may have jammed prior to or at the input sensor.
Page 115: Print Quality Service Check
Infoprint 1120 and 1125 Print Quality Service Check Service Tip: Before troubleshooting any print quality problems do the following: • Install another print cartridge if available before proceeding with the service checks. • Use Tray 1 to test for print quality of the base printer. •...
Page 116 Infoprint 1120 and 1125 Print Quality - All Black Page Service Tip: An all black page is generally caused by a problem in the high voltage system or an incorrect high voltage in the printing process resulting in toner development on the entire photoconductor drum.
Page 117 Infoprint 1120 and 1125 Print Quality - Blank Page Action Print Cartridge Check the print cartridge for any signs of damage, especially the PC drum contact on the cartridge. High Voltage Contact Check the PC drum contact on the right side frame for damage, PC drum contact wear or contamination.
Page 118 Infoprint 1120 and 1125 Action Printhead Assembly Generally a 93x service error is posted if the printhead assembly fails and the printer does not give a blank copy symptom. The printhead used in the printer does not have a mechanical shutter as previous laser printers.
Page 119 Infoprint 1120 and 1125 Print Quality - Evenly spaced horizontal lines or marks. Action Lines spaced 3.19 mm This can be caused by the motor (.126 inch) apart pinion gear on the main drive motor. Replace the main drive motor. Lines spaced 22.32 mm This can be caused by a defective (.882 inch) apart...
Page 120 Infoprint 1120 and 1125 Action Lines spaced 52.23 mm Replace the redrive assembly. (2.056 inch) apart Lines spaced 76.53 mm Replace the FRUs in the following (3.013 inch) apart order: 1. Alignment assembly 2. Main drive gearbox assembly Lines spaced 95.66 mm Replace the FRUs in the following (3.766 inch) apart order:...
Page 121 Infoprint 1120 and 1125 Print Quality - Background Service Tip: Some background problems can be caused by rough papers, non-Lexmark toner cartridges or if the media texture is set to the rough setting. Some slick or coated papers may also cause background. Some problems occur with printers that run a large amount of graphics in a humid environment.
Page 122 Infoprint 1120 and 1125 Action Engine Board HVPS Check the following voltages at J10 Connector on the engine board. Measure the voltages from J10 to printer ground. Printer Idle J10-1 approximately 0 V dc J10-2 approximately 4 V dc J10-4 approximately 0 V dc Printer Printing J10-1 varies 0 V dc to +5 V dc J10-2 varies 0 V dc to +4 V dc...
Page 123 Infoprint 1120 and 1125 Print Quality - Banding Service Tip: Banding is difficult to detect except on a page with a uniform gray or a large amount of graphics printed on the page. Banding is primarily due to a variation in the speed of the paper as it feeds through the printer, especially in the development and transfer process.
Page 124 Infoprint 1120 and 1125 Action HVPS Check the following voltages at J10-8 on the engine board: Printer Idle J10-8 measures 0 V dc Printer Printing Test Page J10-8 voltage changes from 0 V dc to +4 V dc If the voltage does not vary, check the continuity of line J10-8 in the front cable harness.
Page 125 Infoprint 1120 and 1125 Print Quality - Residual Image Service Tip: Install a new print cartridge if available before doing this service check. Residual image can be caused by the photoconductor, cleaning blade and other parts inside the print cartridge. Action Hot Roll Fuser Assembly Check the fuser assembly for signs...
Page 126 Infoprint 1120 and 1125 Print Quality - Toner on backside of printed page Service Tip: This is generally caused by loose toner in the machine in the paper path being carried through the printer on the backside of the paper. Action Hot Roll Fuser Assembly Toner is being carried out on the...
Page 127: Smart Contact Assembly Service Check
Infoprint 1120 and 1125 Smart Contact Assembly Service Check Note: If you are unable to clear a “32-Unsupported Cartridge” User Error Message, be sure a proper print cartridge is correctly installed in the printer. The cartridge is easily identified by the contact board on the right side rear of the cartridge.
Page 128: Serial Port Service Check
Infoprint 1120 and 1125 Serial Port Service Check Run the “Serial Wrap Test” on page 3-13. Note: The Serial Wrap Test is designed to check the serial port hardware by using a wrap plug (P/N 1329048) and invoking the Serial Post Diagnostic Test. The test helps isolate the printer from the serial cable and host.
Page 129: Toner Sensor Service Check
Infoprint 1120 and 1125 Toner Sensor Service Check Service Tip: Check the print darkness MENU setting before checking the toner sensor. This service check is intended to be used when a 929 Service Error displays. Action Developer Drive Assembly Incorrect operation of the developer drive assembly can cause the printer to display a 929 error code (Toner Sensor).
Page 130: Transfer Roll Service Check
Infoprint 1120 and 1125 Transfer Roll Service Check Service Tip: The transfer roll is 51.02 mm (2.009 inch) circumference. Any print quality problems such as lines that are spaced 51.02 mm apart indicate you should check the transfer roll for damage, toner or foreign material buildup. Service Tip: The transfer roll assembly is part of the Maintenance Kit and is replaced when a '80 Scheduled Maintenance”...
Page 131 Infoprint 1120 and 1125 Action Right Transfer Arm Check the right transfer arm Assembly assembly to make sure it is fastened and locked in the down position. If the arm is not locked down, check to make sure the arm is not broken and will lock into the EP frame correctly.
Page 132: Diagnostic Aids
Infoprint 1120 and 1125 3. Diagnostic Aids This chapter explains the tests and procedures to identify printer failures and verify repairs have corrected the problem. To run the printer diagnostic tests described in this chapter, you must put the printer in Diagnostic Mode. Diagnostic Mode To enter the Diagnostic Mode: 1.
Page 133: Device Tests
Infoprint 1120 and 1125 Device Tests Quick Disk Test This test performs a non-destructive read/write on one block per track on the disk. The test reads one block on each track, saves the data, and proceeds to write and read four test patterns to the bytes in the block.
Page 134: Disk Test/Clean
Infoprint 1120 and 1125 Disk Test/Clean Warning: This test destroys all data on the disk and should not be attempted on a good disk. Also note that this test may run approximately 1 1/2 hours depending on the disk size. To run the Disk Test/Clean Test: 1.
Page 135: Flash Test
Infoprint 1120 and 1125 Flash Test This test causes the file system to write and read data on the flash to test the flash. Warning: This test destroys all data on the flash because the flash is reformatted at the end of the test. To run the Flash Test: 1.
Page 136: Disabling Download Emulations
Infoprint 1120 and 1125 Disabling Download Emulations Error Code 964: Download Emulation CRC Failure. Checksum failure detected in the emulation header or emulation file. Error Code 965: Download Emulation Outdated. Time stamps indicate the download emulation and RIP code are incompatible. To help resolve Download Emulation problems the following steps are necessary to instruct the printer to POR without activating any download emulations.
Page 137: Duplex Tests
Infoprint 1120 and 1125 Duplex Tests Duplex Quick Test This test is used to verify that the Duplex Unit Top Margin is set correctly. This test prints a duplexed version of the Quick Test Page that can be used to adjust the Top Margin for the backside of the duplexed page.
Page 138: Duplex Sensor Test
Infoprint 1120 and 1125 Duplex Sensor Test This test is used to determine whether or not the Duplex sensors and switches are working correctly. Select Sensor Test from the Duplex Tests menu. Manually actuate each of the duplex sensors. When the sensor/ switch is closed, CL (closed) displays, when the sensor/switch is open, OP (Open) displays.
Page 139: Duplex Motor Test
Infoprint 1120 and 1125 Duplex Motor Test This test lets you test the duplex unit paper feed drive system, and verify that the power and velocity values are acceptable. To run the Duplex Motor Test: 1. Select Motor Test from the Duplex Tests menu. The duplex motor test continues to run until the printer is powered off.
Page 140: Duplex Feed 1 Test
Infoprint 1120 and 1125 Duplex Feed 1 Test This test feeds a blank sheet of paper to the duplex paper stop position 1. To run the Duplex Feed 1 Test: Select Duplex Feed 1 from the Duplex Test menu. • The power indicator blinks while the paper is feeding.
Page 141: Error Log
Infoprint 1120 and 1125 Error Log Viewing the Error Log The error log is helpful to the servicer by providing a history of printer errors. The error log contains the 12 most recent errors that have occurred on the printer. The most recent error displays in position 1 and the oldest error displays in position 12 (if 12 errors have occurred).
Page 142: Hardware Tests
Infoprint 1120 and 1125 Hardware Tests Select the following Hardware Tests from this menu: • LCD Test • Button Test • DRAM Memory Test • ROM Memory Test • Parallel Wrap (if available) • Serial Wrap (if available) • Serial 1 Wrap (if available) •...
Page 143: Sdram Memory Test
Infoprint 1120 and 1125 SDRAM Memory Test The purpose of this test is to check the validity of SDRAM, both standard and optional. The test writes patterns of data to SDRAM to verify that each bit in memory can be set and read correctly. To run the SDRAM Memory Test: 1.
Page 144: Rom Memory Test
Infoprint 1120 and 1125 ROM Memory Test The ROM Memory Test is used to check the validity of the controller board code and fonts. To run the ROM Memory Test: 1. Select ROM Memory Test from the menu. P and F represent the same numbers for DRAM.
Page 145 Infoprint 1120 and 1125 To run the Serial Wrap Test: 1. Disconnect the serial interface cable and install the wrap plug. 2. Select the appropriate Serial Wrap Test from the menu: Serial Wrap, Serial 1 Wrap, Serial 2 Wrap or Serial 3 Wrap. P and F represent the same numbers for DRAM.
Page 146: Input Tray Tests
Infoprint 1120 and 1125 Input Tray Tests Input Tray Feed Test This test lets the servicer observe the paper path as media is feeding through the printer. A blank sheet of paper feeds through the printer as the laser turns off during this test. The only way to observe the paper path is to open the lower front door that is used to access the envelope or multipurpose feeder.
Page 147: Output Bin Test - Standard Bin
Infoprint 1120 and 1125 Output Bin Test - Standard Bin This test is used to verify if the standard bin sensor is working correctly. To run the Standard Bin Sensor Test: 1. Select Output Bin Tests from the Diagnostic menu. 2.
Page 148: Print Registration
Infoprint 1120 and 1125 Print Registration The print registration range is: Bottom Margin: -20 to +20 Each increment causes approximately .55 mm shift in the bottom margin. Top Margin: -25 to +25 Left Margin: -25 to +25 Right Margin: -10 to +10 To set Print Registration: 1.
Page 149: Printer Setup
Infoprint 1120 and 1125 Printer Setup Setting the Page Count This lets the servicer change the page count from the diagnostic menu. This is used whenever the engine board is replaced because this board contains the printer NVRAM Memory where the page count is stored.
Page 150: Maintenance Page Count
Infoprint 1120 and 1125 Maintenance Page Count This counter is reset by the servicer after a “80 Scheduled Maintenance” message displays (300K copies) and a maintenance kit is installed. To view the Maintenance Page Count: 1. Select Maintenance Count Value from the Diagnostic menu. 2.
Page 151: Setting Configuration Id
Infoprint 1120 and 1125 Setting Configuration ID The configuration ID is used to communicate information about certain areas of the printer that cannot be determined using hardware sensors. The Configuration ID is originally set at the factory when the printer is manufactured, however it requires resetting whenever you replace the engine board and can be set on the operator panel.
Page 152: Restore Ep Factory Defaults
Infoprint 1120 and 1125 Restore EP Factory Defaults To restore each of the printer settings contained in the EP Setup menu to their factory default value select Restore from the menu. To exit the menu without restoring the settings to the factory default values, select Do Not Restore.
Page 153: Print Tests
Infoprint 1120 and 1125 Print Tests The purpose of the diagnostic Print Tests is to verify that the printer can print on media from each of the installed input options. Each of the installed options is listed in the following order in the menu: Tray 1 Tray 2 (if installed) Tray 3 (if installed)
Page 154: Print Quality Test Pages
Infoprint 1120 and 1125 Print Quality Test Pages The purpose of this diagnostic function is to allow printing of the print quality test pages with the toner cartridge lockout function disabled. The print quality test consists of three pages. Page one contains a mixture of graphics and text.
Page 155: Print Test With Rip (Controller Board) Removed
Infoprint 1120 and 1125 Print Test with RIP (Controller Board) Removed This service mode lets you test and service the printer without the controller board installed. You can verify that the motors, sensors, printhead and EP process are working correctly. You can also make meter measurements on the engine board connectors with the controller board removed.
Page 156: Autocompensator Operation
Infoprint 1120 and 1125 Autocompensator Operation The autocompensator is a paper pick device that generates its own normal force. This force generation is inherent in the fundamental design of the pick arm. If light media is used, it picks very gently. If a heavy media is used, it picks very aggressively.
Page 157: Autoconnect System, Paper Tray Options, Envelope Feeder
Infoprint 1120 and 1125 Autoconnect System, Paper Tray Options, Envelope Feeder Electrical Autoconnect Cabling and Connectors The printer options make electrical connection automatically, requiring no external cables when the option is mechanically installed under the printer. Communication between the option and the base printer stops when you remove an option.
Page 158: Fuser Operation
This is a complete assembly and the parts cannot be individually replaced as in previous Lexmark laser printers. The thermal fuse (two fuses in series) protects the fuser assembly and surrounding parts from ignition in the event of a failure in the fuser control circuitry by opening the AC circuit to the lamp.
Page 159: Paper Feed Jams
Infoprint 1120 and 1125 Paper Feed Jams Paper Jams - Base Printer Error Message 200 - Paper Jam - Remove Cartridge This message indicates that paper is jammed at the printer input sensor. This condition can be caused by the paper jamming prior to activating the input sensor flag, the sensor not detecting paper over the sensor or paper arriving at the sensor too late.
Page 160 Infoprint 1120 and 1125 Error Message 24x (x=Tray 1 through 5) Paper Jam Check Tray x The paper has not cleared the pass thru sensor or reached the pass thru sensor of the option above tray x. Error Message 250 - Paper Jam - Check MP Feeder The paper is jammed in the multipurpose feeder and has not reached the base machine input sensor or has not reached the input sensor in time.
Page 161 Infoprint 1120 and 1125 3-30 Service Manual...
Page 162: Repair Information
Infoprint 1120 and 1125 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 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: •...
Page 163: Adjustment Procedures
Infoprint 1120 and 1125 Adjustment Procedures Duplex Motor Drive Belts Do the duplex motor belt and drive belt adjustment whenever you remove or replace the duplex motor or loosen the motor or drive belt idler pulley. Service Tip: Excessive belt tension can result in stalling the duplex motor.
Page 164: Fuser Solenoid Adjustment
Infoprint 1120 and 1125 Fuser Solenoid Adjustment Perform the fuser solenoid adjustment whenever you replace the fuser solenoid. Adjust the fuser solenoid while installed in the printer. Adjust the screw on the eccentric mounted on the solenoid housing to provide an air gap between the rear of the solenoid stator and the solenoid armature.
Page 165: Printhead Assembly Adjustment
Infoprint 1120 and 1125 Printhead Assembly Adjustment Do the printhead assembly adjustment whenever you remove or replace the printhead assembly or loosen the mounting screws. Install the new printhead with the three mounting screws centered in the slots in the printhead frame assembly. Leave the screws loose enough to allow the printhead assembly to move from side to side within the slots.
Page 166: Paper Alignment Assembly Adjustment
Infoprint 1120 and 1125 Paper Alignment Assembly Adjustment Do the alignment assembly adjustment whenever you replace the alignment assembly. Always print a copy of the Quick Test Page before making any adjustments to the alignment assembly reference adjustment screw. When replacing the alignment assembly, it is necessary to back the reference adjustment screw out far enough to remove the old assembly and install the new one.
Page 167 Infoprint 1120 and 1125 B. Print a copy of the Quick Test Page and check the margin adjustments printed on the test page. These settings should be within the range specified in “Print Registration” on page 3-17. The reference screw can be adjusted without loosening the locknut.
Page 168: Screw Identification Table
Infoprint 1120 and 1125 Screw Identification Table The following table contains screw types, locations, and quantities necessary to service the printer. Each screw callout in the removal procedure graphic displays the screw reference number listed in the table. Pay careful attention to each screw type location when doing removals.
Page 169 Infoprint 1120 and 1125 Reference Screw Type Location Purpose Number M3.5x8 mm spring mounting Thread Cutting controller board mounting (front) integrated tray ITC mounting board stacker support to right attach side frame M3.5x12 mm engine board shield to attach Thread Cutting left frame paper alignment mounting...
Page 170 Infoprint 1120 and 1125 Reference Screw Type Location Purpose Number M3x6 mm outer shield mounting Taptite inner redrive deflector mounting interconnect board to mounting center pan engine board mounting controller board to attach interconnect board ground controller board to inner mounting shield controller board (back)
Page 171 Infoprint 1120 and 1125 Reference Screw Type Location Purpose Number M3x12 mm HVPS board mounting Taptite Panhead M3x28 mm developer drive ground attach Taptite (bottom hole) Panhead M3x6 mm stacker duct mounting Taptite controller to shield mounting Panhead controller board mounting in pan mounting...
Page 172 Infoprint 1120 and 1125 Reference Screw Type Location Purpose Number M3.5x8 mm autocompensator mounting Plastite Thread Forming M3.5x10 mm right side cover mounting Plastite Thread right side frame to pan attach Forming left side frame to pan attach M3x6 mm fuser board mounting SEMS Machine...
Page 173: Removal Procedures
Infoprint 1120 and 1125 Removal Procedures CAUTION: Remove the power cord from the printer or wall outlet before you connect or disconnect any cable or electronic board or assembly for personal safety and to prevent damage to the printer. Use the hand grips on the side of the printer. Make sure your fingers are not under the printer when you lift or set the printer down.
Page 174 Infoprint 1120 and 1125 Right Cover Removal 1. Open the upper and bottom front covers. 2. Release the cover latch (A) and remove the right cover mounting screw (B). 4-13 Repair Information...
Page 175 Infoprint 1120 and 1125 3. Remove the redrive assembly. 4. Remove the right side cover mounting screw (B). 5. Remove the right side cover. 4-14 Service Manual...
Page 176 Infoprint 1120 and 1125 Upper Front Cover Removal 1. Raise the upper front cover. 2. Remove the upper front cover mounting screws (A). 3. Rotate the cover upward to allow the rear cover hinges to clear the mounting slots and remove the cover. Note: When removing the cover, hold the upper and lower latch and spring to prevent them from falling into the printer.
Page 177: Center Pan Assembly Removal
Infoprint 1120 and 1125 Laser Assembly Cover Removal 1. Remove the left door. 2. Remove the right cover. 3. Remove the rear paper deflector. 4. Press the fuser wiper cover latch and remove the cover. 5. Remove the paper full sensor flag assembly from the mounting bracket.
Page 178: Controller Board Removal
Infoprint 1120 and 1125 Controller Board Removal 1. Remove the inner EMC shield. 2. Remove the controller board mounting screws (A). 3. Remove the controller board parallel port mounting screws, if installed. 4. Remove the USB port mounting screws (C), if present. 5.
Page 179: Developer Drive Assembly Removal
Infoprint 1120 and 1125 Developer Drive Assembly Removal 1. Remove the inner EMC shield. 2. Remove the developer drive assembly mounting screws (A). 3. Remove the developer drive assembly. Note: Be sure the developer drive assembly wheel aligns with the hub on the main drive assembly when reinstalling the assembly.
Page 180: Duplex Board Removal
Infoprint 1120 and 1125 Duplex Board Removal 1. Lift the base printer from the duplex assembly. 2. Remove the four duplex board cover mounting screws. 3. Gently disconnect the cables from the duplex board. Warning: To avoid damage to the cables and connectors. 4.
Page 181: Duplex Motor Removal
Infoprint 1120 and 1125 Duplex Motor Removal 1. Remove the duplex front cover door. 2. Gently disconnect the cables from the duplex board. Warning: To avoid damage to the cables and connectors. 3. Remove the four mounting screws from the left and right return guides and remove the guides.
Page 182: Emc Shields Removals
Infoprint 1120 and 1125 EMC Shields Removals Inner EMC Shield Removal 1. Remove the left door. 2. Remove the outer EMC shield. 3. Remove all option boards from the connector board slots. 4. Remove the inner EMC shield mounting screws (A). 5.
Page 183 Infoprint 1120 and 1125 Outer EMC Shield Removal 1. Remove the left door. 2. Loosen the outer EMC shield mounting screws (A) and remove the shield. 4-22 Service Manual...
Page 184: Engine Board Removal
Infoprint 1120 and 1125 Engine Board Removal 1. Remove the inner EMC shield. 2. Disconnect all cables from the engine board. 3. Remove the engine board mounting screws (A). 4. Remove the engine board shield mounting screw (B) from the main drive motor assembly.
Page 185: Main Fan Removal
Infoprint 1120 and 1125 Main Fan Removal 1. Remove the top rear cover. 2. Remove the inner EMC shield. 3. Note the routing of the main fan cable (A) and disconnect the cable from the engine board at connector J1. 4.
Page 186: Frames Removals
Infoprint 1120 and 1125 Frames Removals EP Frame Assembly Removal 1. Remove the left and right side frames. 2. Remove the EP frame assembly. Left Side Frame Removal 1. Remove the engine board. 2. Remove the main drive assembly. 3. Remove the upper front cover hinge assembly. 4.
Page 187 Infoprint 1120 and 1125 7. Place the printer on its back and remove the left side frame mounting screws (A). 8. Remove the left side frame. 4-26 Service Manual...
Page 188 Infoprint 1120 and 1125 Right Side Frame Removal 1. Remove the right side cover. 2. Remove the LVPS. 3. Remove the multipurpose tray assembly. 4. Disconnect the autocompensator arm bias spring from the right side frame. 5. Remove the toner sensor mounting screw (A), disconnect the sensor cable and remove the toner sensor.
Page 189: Fuser Removal
Infoprint 1120 and 1125 Fuser Removal 1. Remove the redrive assembly. 2. Remove the ground screw (B). 3. Remove the fuser mounting screws (A). 4. Disconnect the AC fuser lamp connector from the LVPS. 5. Disconnect the DC fuser cable from the engine board. 6.
Page 190: Fuser Board Removal
Infoprint 1120 and 1125 Fuser Board Removal 1. Remove the fuser assembly. 2. Disconnect the cables (A) from the fuser board. 3. Remove the fuser board mounting screws (B). 4. Lift the fuser board from the fuser assembly. 4-29 Repair Information...
Page 191: Fuser Cover Removal
Infoprint 1120 and 1125 Fuser Cover Removal 1. Remove the fuser assembly. 2. Note the thermistor cable routing and disconnect the cable from the fuser board. 3. Disconnect the AC fuser lamp cable from the top left side of the fuser cover.
Page 192 Infoprint 1120 and 1125 CAUTION: Take care when removing the screw, as the lamp is under pressure. When the contact is released, damage to the lamp or contact may occur. 4-31 Repair Information...
Page 193: Fuser Detack Housing Assembly Removal
Infoprint 1120 and 1125 Fuser Detack Housing Assembly Removal 1. Remove the fuser assembly. 2. Remove the fuser cover assembly. 3. Remove the fuser lamp. Use care when handling the lamp. 4. Disengage the hot roll bearing clips to free the fuser frame walls.
Page 194: Fuser Envelope Conditioner Solenoid Removal
Infoprint 1120 and 1125 Fuser Envelope Conditioner Solenoid Removal 1. Remove the fuser assembly. 2. Disconnect the solenoid cable from the fuser board. 3. Remove the solenoid mounting screw (A). 4. Disconnect the solenoid link (B). 5. Remove the solenoid from the fuser assembly. Note: Perform the “Fuser Solenoid Adjustment”...
Page 195: Fuser Narrow Media Sensor/Flag Assembly Removal
Infoprint 1120 and 1125 Fuser Narrow Media Sensor/Flag Assembly Removal 1. Remove the fuser assembly. 2. Cut the cable tie from the fuser board cable bundle. 3. Disconnect the narrow media sensor from the fuser board. The sensor can be removed without removing the lower exit guide assembly.
Page 196: Fuser Lamp Removal
Infoprint 1120 and 1125 Fuser Lamp Removal 1. Remove the fuser assembly. 2. Disconnect the fuser lamp AC cable from the top cover assembly. 3. Remove the fuser lamp. Warning: Hold the left lamp bracket and carefully remove the two mounting screws.
Page 197: High Voltage Power Supply Removal
Infoprint 1120 and 1125 High Voltage Power Supply Removal 1. Remove the inner paper deflector. 2. Remove the toner sensor cable from the retainer (A) on the front of the HVPS. 3. Remove the right side cover. 4. Disconnect the HVPS cable from the HVPS at connector (C). 5.
Page 198: Integrated Tray Compensator Assembly Removal
Infoprint 1120 and 1125 Integrated Tray Compensator Assembly Removal 1. Remove the paper tray. 2. Remove the left door. 3. Remove the inner EMC shield. 4. Disconnect the compensator motor cable (A) from the engine board. 5. Place the printer on its side. 6.
Page 199: Integrated Tray Compensator Pick Roll Assembly Removal
Infoprint 1120 and 1125 Integrated Tray Compensator Pick Roll Assembly Removal 1. Remove the paper tray. 2. Place the printer on its side. 3. Locate the compensator assembly on the bottom of the printer and pull the compensator arm away from the printer. 4.
Page 200: Interconnect Board Assembly Removal
Infoprint 1120 and 1125 Interconnect Board Assembly Removal 1. Remove the inner EMC shield. 2. Remove the engine board and shield. 3. Remove the LVPS. 4. Disconnect all cables from the interconnect board. Go to “Interconnect Board” on page 5-14 to identify the correct jumper locations for your printer.
Page 201: Low Voltage Power Supply Removal
Infoprint 1120 and 1125 Low Voltage Power Supply Removal 1. Remove the right cover. 2. Remove the LVPS mounting screws (A) from the rear of the bottom pan. 3. Pull the LVPS assembly from the right side of the printer. 4-40 Service Manual...
Page 202 Infoprint 1120 and 1125 4. Press the release latch on the fuser lamp cable connector (B) and disconnect from the LVPS. 5. Remove the fuser assembly. 4-41 Repair Information...
Page 203 Infoprint 1120 and 1125 6. Disconnect the interconnect card cable from the LVPS (C). 7. Remove the LVPS. 4-42 Service Manual...
Page 204: Main Drive Assembly Removal
Infoprint 1120 and 1125 Main Drive Assembly Removal 1. Remove the inner EMC shield. 2. Remove the gear guard. 3. Remove the developer drive assembly. 4. Remove the transfer shaft (A) through the bottom of the printer. 5. Remove all cables from the cable clamps (B) on the main drive assembly.
Page 205: Main Drive Motor Removal
Infoprint 1120 and 1125 Main Drive Motor Removal 1. Remove the main drive assembly. 2. Remove the main drive motor mounting screws (A). 3. Remove the main drive motor. 4-44 Service Manual...
Page 206: Multipurpose Tray/Lower Deflector Assembly Removal
Infoprint 1120 and 1125 Multipurpose Tray/Lower Deflector Assembly Removal 1. Open the multipurpose tray to a position that allows the left and right tray hinge slots (A) to align with the rectangular mounting posts (B). Pull upward on each tray hinge to remove the tray from the two mounting posts.
Page 207 Infoprint 1120 and 1125 2. Remove the upper deflector. 3. Remove the solenoid mounting screw. 4. Remove the screws (A) mounting the multipurpose tray/lower deflector assembly. 5. Remove the multipurpose tray/lower deflector assembly. 4-46 Service Manual...
Page 208: Operator Panel Assembly Removal
Infoprint 1120 and 1125 Operator Panel Assembly Removal 1. Remove the upper front cover. 2. Gently press the operator panel lens tab (A) to loosen the operator panel. 3. Disconnect the operator panel cable and remove the operator panel. 4-47 Repair Information...
Page 209: Operator Panel Cable/Cover Switch Removal
Infoprint 1120 and 1125 Operator Panel Cable/Cover Switch Removal Note: Pay careful attention to the cable routing through the printer before you remove the operator panel cable/cover open switch assembly. 1. Remove the left door, left cover, upper front cover, outer EMC shield and inner EMC shield.
Page 210: Optional 250/500 Paper Tray Assembly Removal
Infoprint 1120 and 1125 Optional 250/500 Paper Tray Assembly Removal Note: Remove the printer and other paper feed options to access the failing optional paper tray assembly. Paper Tray Compensator Assembly Removal 1. Remove the printer and other paper feed options. 2.
Page 211: Paper Alignment Assembly Removal
Infoprint 1120 and 1125 Paper Alignment Assembly Removal 1. Remove the upper paper deflector assembly. 2. Remove the inner paper deflector assembly. 3. Release the input paper sensor from its mounting and remove. 4. Remove the left door. 5. Remove the paper alignment assembly mounting screws (A). 4-50 Service Manual...
Page 212 Infoprint 1120 and 1125 6. Locate the paper alignment assembly reference adjustment screw (B) through the left frame and remove the screw. 7. Remove the paper alignment assembly. Note: Do the “Paper Alignment Assembly Adjustment” on page 4-5 when you reinstall the assembly. 4-51 Repair Information...
Page 213: Paper Deflectors Removals
Infoprint 1120 and 1125 Paper Deflectors Removals Inner Paper Deflector Assembly Removal 1. Remove the paper tray. 2. Remove the upper deflector assembly. 3. Place the printer on its side. 4. Remove the lower deflector assembly. 5. Gently pry the inner paper deflector from the left and right mounting posts (A) located on the bottom of the printer and remove the deflector.
Page 214: Paper Input Sensor Removal
Infoprint 1120 and 1125 Paper Input Sensor Removal 1. Remove the inner paper deflector assembly. 2. Disconnect the paper input sensor cable from the input sensor. 3. Release the input paper sensor from its mounting and remove. Paper Size Sensing Board Removal 1.
Page 215: Printhead Removal
Infoprint 1120 and 1125 Printhead Removal 1. Remove the laser assembly cover. 2. Disconnect the printhead cables (A) from the printhead assembly. 3. Remove the printhead mounting screws (B) and remove the printhead. Note: Do the “Printhead Assembly Adjustment” on page 4-4 whenever you remove or replace the printhead assembly or loosen the mounting screws.
Page 216: Redrive Assembly Removal
Infoprint 1120 and 1125 Redrive Assembly Removal 1. Remove the redrive door assembly. 2. Remove the redrive exit cover. 3. Remove the redrive assembly mounting screws (A). 4. Release the redrive assembly mounting latches (B) and remove the redrive assembly. 4-55 Repair Information...
Page 217: Smart Contact Assembly Removal
Infoprint 1120 and 1125 Smart Contact Assembly Removal 1. Disconnect smart cartridge cable. 2. Remove print cartridge. 3. Remove transfer plate. 4. Unlatch smart cartridge contact assembly (A) from the right frame assembly. 5. Remove smart cartridge contact (B). 6. Disconnect the smart contact assembly cable (C) from the engine board.
Page 218: Toner Sensor Removal
Infoprint 1120 and 1125 Toner Sensor Removal 1. Remove the right side cover. 2. Remove the toner sensor mounting screw (A). Disconnect the toner sensor cable and remove the toner sensor. 4-57 Repair Information...
Page 219: Transfer Roll Assembly Removal
Infoprint 1120 and 1125 Transfer Roll Assembly Removal 1. Open the upper front cover and remove the print cartridge. 2. Unsnap the transfer roll assembly from the left pivot arm. 3. Lift the transfer roll assembly toward the left and remove it from the printer.
Page 220: Upper Front Cover Hinge Assembly Removal
Infoprint 1120 and 1125 Upper Front Cover Hinge Assembly Removal 1. Remove the upper front cover. 2. Remove the laser assembly cover. 3. Remove the C-clips (A) from the upper front cover hinge assembly left and right hinge pins and remove the pins. Note the pin orientation and the C-clip location on the inside of each hinge.
Page 221: Upper Front Cover Interlock Switch Assembly Removal
Infoprint 1120 and 1125 Upper Front Cover Interlock Switch Assembly Removal 1. Remove the upper front cover. 2. Remove the operator panel. 3. Remove the inner EMC shield. 4. Remove the mounting screw (A) and remove the switch assembly. 5. Note the routing of the interlock switch assembly cable and disconnect the cable on the engine board.
Page 222: Connector Locations
Infoprint 1120 and 1125 5. Connector Locations Low Voltage Power Supply Connector Pin No. Signal CN3 Interconnect Board +5 V dc +5 V dc Ground Ground Ground Ground +24 V dc +24 V dc Heat on +5 V dc +5 V dc Ground Ground Ground...
Page 223 Infoprint 1120 and 1125 Service Manual...
Page 224: High Voltage Power Supply
Infoprint 1120 and 1125 High Voltage Power Supply Connector Pin No. Signal CN1 Engine Board Developer PWM +24 V dc Return Charge PWM +24 V dc IN TX PWM TX Enable TX CUR PWM SVRO OUT Connector Locations...
Page 225: Engine Board
Infoprint 1120 and 1125 Engine Board Connector Pin No. Signal J1 Main Fan Fan Stall Ground Main Fan J3 Printhead (Mirror Motor) +24 V dc Return +24 V dc Return ReFREQ LOCKn Start* +24 V dc Return +24 V dc J4 Cover Closed Switch Cover Closed Ground...
Page 226 Infoprint 1120 and 1125 Connector Pin No. Signal J6 Output Level Sensor HOPFULL* Ground Opt2 Ground J8 Printhead HYSNC +5 V dc HsyncID Hsyncin Ground J10 Cartridge/Sensor/Input AT Servo (HVPS) Sensor/HVPS Servo OutT (HVPS) TXENABLE (HVPS) Transfer (HVPS) +24 V dc (HVPS) Charge (HVPS) Ground (HVPS) Developer (HVPS)
Page 227 Infoprint 1120 and 1125 Connector Pin No. Signal J11 Operator Panel FPIRQ Ground I2CCLK +5 V dc I2CDATA J12 Transport Motor ON/OFF Ground +5 V dc MTR1 MTR4 MTR3 +24 V RET +24 V RET +24 V dc J14 Autoconnect (Options) RXDIN Ground TxBR...
Page 228 Infoprint 1120 and 1125 Connector Pin No. Signal J15 Integrated Paper Tray - +5 V dc Paper Size Sensor PSIZE2 Ground PSIZE1 +24 V dc Ground POUT +5 V dc Paper Low +5 V dc J16 Fuser Narmedia* Thermgnd Therm Ground Thumpdrv +5 V dc...
Page 229 Infoprint 1120 and 1125 Connector Pin No. Signal J19 MPT Paper Out MPFSENSE Ground MPFLED J22 Smart Contact Scart 5 V Ground Ground Service Manual...
Page 230: Engine Board
Infoprint 1120 and 1125 Engine Board Connector Locations...
Page 231: Controller Board - Non Network
Infoprint 1120 and 1125 Controller Board - Non Network 5-10 Service Manual...
Page 232: Controller Board - Network
Infoprint 1120 and 1125 Controller Board - Network 5-11 Connector Locations...
Page 233: Fuser Board
Infoprint 1120 and 1125 Fuser Board Connector Pin No. Signal J1 Engine Board NarMedia ThermGnd HRTherm Ground ThumpA +5 V dc ThumpB ExitSns* J2 Thermistor ThermGnd HRTherm J3 Thumper Ground +42 V dc J4 Thumper Solenoid ThumpB ThumpA J5 Narrow Media Sensor +5 V dc Nar Media Ground...
Page 234 Infoprint 1120 and 1125 5-13 Connector Locations...
Page 235: Interconnect Board
Infoprint 1120 and 1125 Interconnect Board Connector Pin No. Signal J2 LVPS +42 V dc Heaton Xeroxing +24 V dc +24 V dc +24 V dc Ground Ground Ground Ground J3 LVPS Ground Ground Ground Ground +5 V dc +5 V dc +5 V dc +5 V dc J5 Autoconnect...
Page 236 Infoprint 1120 and 1125 210/220 001/002 5-15 Connector Locations...
Page 237: Envelope Feeder Board
Infoprint 1120 and 1125 Envelope Feeder Board Connector Pin No. Signal Ground Tx (EOC) Ground Rx (EOC) +24 V dc Return +24 V dc Ground Paper Present +5 V dc Ground Paper Present +5 V dc Motor - Phase B- Motor - Phase A- Motor - Phase B+ Motor - Phase A+...
Page 238 Infoprint 1120 and 1125 5-17 Connector Locations...
Page 239: Duplex Unit Board
Infoprint 1120 and 1125 Duplex Unit Board Note: Duplex connectors J10 and J11 are interchangeable. No problem results if the connectors are switched. Connector Pin No. Signal J1 Motor Motor - Motor + J2 DC Motor +5 V dc Sensor Sensor/Encoder Board Tach + Ground...
Page 240 Infoprint 1120 and 1125 Connector Pin No. Signal J9 Autoconnect, Option Below Ground PrtxDout Ground PrtRxd J10 Autoconnect, Option Below +24 V dc Ground J11 Printer Autoconnect +24 V dc Ground J12 Printer Autoconnect Ground PrtxDin Ground PrtRxD 5-19 Connector Locations...
Page 241 Infoprint 1120 and 1125 5-20 Service Manual...
Page 242: Preventive Maintenance
Damaged, missing, or altered covers, especially in the area of the top cover and the power supply cover. • Possible safety exposure from any non-Lexmark attachments. Lubrication Specifications Lubricate only when parts are replaced or as needed, not on a scheduled basis.
Page 243: Scheduled Maintenance
Infoprint 1120 and 1125 Scheduled Maintenance The operator panel displays the message “80 Scheduled Maintenance” at each 250K page count interval. It is necessary to replace the fuser assembly, transfer roller and charge roll at this interval to maintain the print quality and reliability of the printer. The parts are available as a maintenance kit with the following part numbers: 115 V 630 W Maintenance Kit 28P2495...
Page 244: Parts Catalog
Infoprint 1120 and 1125 7. Parts Catalog How to Use This Parts 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.
Page 245: Assembly 1: Covers
Infoprint 1120 and 1125 Assembly 1: Covers Service Manual...
Page 246 Infoprint 1120 and 1125 Asm- Part Units Description Index Number 1 - 1 53P8916 Cover Assembly, Redrive Cap 53P8431 Cover, Fuser Wick Assembly 53P8871 Cover Asm, Laser Assembly 53P9131 Smart Contact Assembly 53P8917 Cover, Right Side 53P8881 Hinge, Upper Front Cover 56P0100 Kit, Upper Front Cover with Labels (Infoprint 1125)
Page 247: Assembly 2: Frame
Infoprint 1120 and 1125 Assembly 2: Frame Service Manual...
Page 248 Infoprint 1120 and 1125 Asm- Part Units Description Index Number 2 - 1 53P8875 Shroud, Fan 53P8912 Fan, Main 56P1049 Sensor, Standard Bin Level 53P8479 Flag, Output Paper Level 53P8863 Bracket, Level Sensor 53P8883 Duct, Left Stacker 53P8405 Duct, Main Body 53P8884 Guide, Redrive Exit 53P8885...
Page 249 Infoprint 1120 and 1125 Assembly 2: Frame (continued) Service Manual...
Page 250 Infoprint 1120 and 1125 Asm- Part Units Description Index Number 2 - 30 53P8891 Left Side Frame 56P1139 Board, Input Tray (ITC) 53P8641 Guard, Gear 53P8920 Pan, Motor Drip 53P8357 Link, Gear Release 53P8352 Spring, Counterbalance 53P8617 Parts Packet, Screw 53P8441 Spring, Cartridge Load 53P8452...
Page 251: Assembly 3: Printhead
Infoprint 1120 and 1125 Assembly 3: Printhead Service Manual...
Page 252 Infoprint 1120 and 1125 Asm- Part Units Description Index Number 3 - 1 53P8892 Printhead Assembly 53P8617 Parts Packet, Screw (Printhead Mounting) Parts Catalog...
Page 253: Assembly 4: Paper Feed (Autocompensator)
Infoprint 1120 and 1125 Assembly 4: Paper Feed (Autocompensator) 7-10 Service Manual...
Page 254 Infoprint 1120 and 1125 Asm- Part Units Description Index Number 4 - 1 53P9130 Sensor, Paper Out Internal Tray 53P8945 Pick Arm Assembly (500) 1125 53P8937 Pick Arm Assembly (250) 1120 75P5958 Pick Rolls (2 per pack) 53P8480 Flag, Paper Out 500 Tray (1125) 53P8928 Flag, Paper Out 250 Tray (1120) 53P8929...
Page 255: Assembly 5: Paper Feed - Multipurpose Unit
Infoprint 1120 and 1125 Assembly 5: Paper Feed - Multipurpose Unit 7-12 Service Manual...
Page 256 Infoprint 1120 and 1125 Asm- Part Units Description Index Number 5 - 1 53P8215 Screw, Socket Set M4X5 mm 53P9106 Arm Assembly, MPT 53P8795 Pick Roll Assembly 53P8217 Spring Assembly, Separator 53P8219 MPT Pad/Separator Arm Assembly 53P8873 Deflector Assembly, MPT 56P0125 Deflector, Lower 53P8617...
Page 257: Assembly 6: Paper Feed - Alignment
Infoprint 1120 and 1125 Assembly 6: Paper Feed - Alignment 7-14 Service Manual...
Page 258 Infoprint 1120 and 1125 Asm- Part Units Description Index Number 6 - 1 53P8221 Alignment Assembly Paper Feed 53P8617 Parts Packet, Screw (Paper Feed) 53P9127 Clip, Reference Ground 53P8346 Screw, Paper Reference Adjustment 53P8355 Washer, Reference Adjustment 53P8356 Nut, Paper Reference Adjustment 53P8617 Parts Packet, Screw (Alignment Asm Mounting)
Page 259: Assembly 7: Paper Feed - Output
Infoprint 1120 and 1125 Assembly 7: Paper Feed - Output 7-16 Service Manual...
Page 260 Infoprint 1120 and 1125 Asm- Part Units Description Index Number 7 - 1 53P8939 Redrive Assembly, 500 Input/250 Output 1125 53P8931 Redrive Assembly, 250 Input/250 Output 1120 53P8876 Door Assembly, Redrive 250 53P8222 Spring, Upper Diverter 53P8610 Deflector, Upper Redrive 53P8617 Parts Packet, Screw (Duplex Path) 7-17...
Page 261: Assembly 8: Integrated Paper Tray - 500 Sheet
Infoprint 1120 and 1125 Assembly 8: Integrated Paper Tray - 500 Sheet 7-18 Service Manual...
Page 262 Infoprint 1120 and 1125 Asm- Part Units Description Index Number 8 - 1 53P8473 Latch, Back Restraint 53P8459 Tray Assembly 500 Sheet 53P8747 Restraint, Side 53P8266 Strip, Wear 53P8483 Label, Tray Option Number 53P8464 Plate, 500 Tray Wear 53P8229 Finger, Autosize 53P8228 Plate, Snap-in 53P8463...
Page 263: Assembly 9: Main Drive
Infoprint 1120 and 1125 Assembly 9: Main Drive 7-20 Service Manual...
Page 264 Infoprint 1120 and 1125 Asm- Part Units Description Index Number 9 - 1 53P8894 Gearbox, w/Motor 53P8925 Shaft, Power Takeoff 250 - 1120 53P8457 Shaft, Power Takeoff 500 - 1125 53P8256 Spring, Power Takeoff Shaft 56P2162 Gear, Bevel with Grease Packet 53P8617 Parts Packet, Screw (Gearbox Mounting) 53P8617...
Page 265: Assembly 10: Developer Drive
Infoprint 1120 and 1125 Assembly 10: Developer Drive 7-22 Service Manual...
Page 266 Infoprint 1120 and 1125 Asm- Part Units Description Index Number 10 - 1 53P8451 Developer Drive Assembly 53P8922 Parts Packet, Developer Drive Shaft, Coupler Gear #55 53P8617 Parts Packet, Screw (Developer Drive Ground) 7-23 Parts Catalog...
Page 267: Assembly 11: Hot Roll Fuser
Infoprint 1120 and 1125 Assembly 11: Hot Roll Fuser 7-24 Service Manual...
Page 268 Infoprint 1120 and 1125 Asm- Part Units Description Index Number 11 - 1 Supply Fuser Assembly w/115V 630W Lamp Supply Fuser Assembly w/220V 630W Lamp 53P9103 Wiper Assembly, Wet 56P0150 Cover, Fuser Assembly with Thermistor, Thermal Fuse, and L & R Fuser Lamp Contact Assemblies 53P8617 Parts Packet, Screws:...
Page 269: Assembly 12: Transfer
Infoprint 1120 and 1125 Assembly 12: Transfer 7-26 Service Manual...
Page 270 Infoprint 1120 and 1125 Asm- Part Units Description Index Number 12 - 1 Supply Transfer Roll Assembly 53P8293 Arm, Transfer Roll Assembly Right 53P8242 Spring, Transfer Roll Right 53P8243 Shaft, Transfer Pivot 53P8241 Spring, Transfer Roll Left 53P8460 Arm, Transfer Roll Left 53P8249 Parts Packet, Retainer (Pivot Shaft) 7-27...
Page 271: Assembly 13: Charging
Infoprint 1120 and 1125 Assembly 13: Charging 7-28 Service Manual...
Page 272 Infoprint 1120 and 1125 Asm- Part Units Description Index Number 13 - 1 53P8348 Link Assembly, Charge Left Kit 53P8349 Link Assembly, Charge Right Kit Supply Roll Assembly, Charge 53P8456 Bushing, Charge Roll 53P8617 Parts Packet, Screw (Charge Roll) 7-29 Parts Catalog...
Page 273: Assembly 14: Electronics 1
Infoprint 1120 and 1125 Assembly 14: Electronics 1 7-30 Service Manual...
Page 274 Infoprint 1120 and 1125 Asm- Part Units Description Index Number 14 - 1 1342514 Power Cord Set, 8 ft. U.S., Canada (LV), Nicaragua, Venezuela, Peru (LV), Bolivia (HV), Colombia, Costa Rica, Ecuador, El Salvador, Guatemala, Honduras, Mexico, Panama 1339535 Power Cord Set, 8 ft. U.S., Canada (LV), Nicaragua, Venezuela, Peru (LV), Bolivia, Colombia, Costa Rica, Ecuador, El Salvador, Guatemala, Honduras, Mexico, Panama,...
Page 275: Assembly 15: Electronics Ii
Infoprint 1120 and 1125 Assembly 14: Electronics I (continued) 7-32 Service Manual...
Page 276 Infoprint 1120 and 1125 Asm- Part Units Description Index Number 14 - 4 53P8617 Parts Packet, Screw(s): –Controller Board Mtg (2) –Controller Board Mtg Front (2) –Controller Mtg Ground (1) –Engine Board Mtg (6) –Engine Board Mtg Top (2) –HVPS Mtg –INA Cover Mtg (12) –Interconnect Board Mtg (2) –Interconnect Board Shield Ground (1)
Page 277: Assembly 16: Electronics Iii
Infoprint 1120 and 1125 Assembly 15: Electronics II 7-34 Service Manual...
Page 278 Infoprint 1120 and 1125 Asm- Part Units Description Index Number 15 - 1 53P8617 Parts Packet, Screw (INA Cover Mounting) 56P0113 Engine Board Shield Assembly 1125 53P8944 Shield, Inner Assembly, 2 Slot 1125 53P8936 Shield, Inner Assembly, 1 Slot 1120 53P8946 Shield, Outer 2 Slot 1125 53P8926...
Page 279: Assembly 17: Electronics Iv
Infoprint 1120 and 1125 Assembly 16: Electronics III 7-36 Service Manual...
Page 280 Infoprint 1120 and 1125 Asm- Part Units Description Index Number 16 - 1 53P8912 Fan, Main 53P8894 Gearbox, w/Motor 56P1139 Board, Input Tray (ITC) 53P8902 Cable, Auto Connect Bottom 53P8941 Interconnect Board Assembly 53P8901 Cable, Integrated Tray 53P8903 Cable, Main Drive Motor 56P1015 Engine Board Assembly - 1125 56P1014...
Page 281: Assembly 18: Electronics V
Infoprint 1120 and 1125 Assembly 17: Electronics IV 7-38 Service Manual...
Page 282 Infoprint 1120 and 1125 Asm- Part Units Description Index Number 17 - 1 53P8882 Operator Panel Assembly 110 V 56P0123 Operator Panel Assembly 220 V 53P8909 Switch, Cover Open w/Operator Panel Cable Assembly 53P8207 Sensor, Input 53P8945 Pick Arm Assembly (500) 1125 53P8937 Pick Arm Assembly (250) 1120 53P8914...
Page 283: Assembly 19: Electronics Vi
Infoprint 1120 and 1125 Assembly 18: Electronics V 7-40 Service Manual...
Page 284 Infoprint 1120 and 1125 Asm- Part Units Description Index Number 18 - 1 53P8892 Printhead Assembly 53P8905 Cable, Laser 56P1014 Engine Board Assembly - 1120 56P1015 Engine Board Assembly - 1125 53P8941 Interconnect Board Assembly 53P9128 Solenoid Assembly, Envelope Conditioner 56P0150 Fuser Board Assembly 53P8872...
Page 285: Assembly 19: Electronics Vi
Infoprint 1120 and 1125 Assembly 19: Electronics VI 7-42 Service Manual...
Page 286 Infoprint 1120 and 1125 Asm- Part Units Description Index Number 19 - 1 53P8892 Printhead Assembly 53P8905 Cable, Laser 56P1014 Engine Board Assembly (1120) 56P1015 Engine Board Assembly (1125) 53P8941 Interconnect Board Assembly 53P9128 Solenoid Assembly, Envelope Conditioner 56P0150 Fuser Board Assembly 53P8872 Sensor, Exit 56P0150...
Page 287: Assembly 20: 250-Sheet Tray
Infoprint 1120 and 1125 Assembly 20: 250-Sheet Tray 7-44 Service Manual...
Page 288 Infoprint 1120 and 1125 Asm- Part Units Description Index Number 20 - 1 53P8617 Parts Packet, Screw (Option Board) 56P0557 Board, Option Tray 53P8362 Jumper, pin 53P8617 Parts Packet, Screw (Switch Spring) 53P8211 Spring, Switch Activate 53P8326 Stud Assembly, 250 Frame 53P8928 Arm, Paper Out 250 53P8617...
Page 289 Infoprint 1120 and 1125 Assembly 20: 250-Sheet Tray (continued) 7-46 Service Manual...
Page 290 Infoprint 1120 and 1125 Asm- Part Units Description Index Number 20 - 34 53P8473 Latch, Back Restraint 53P8226 Restraint Pad 53P8446 Tray Assembly, 250-Sheet Option 53P8823 Restraint, Side 250-Sheet Tray 56P1279 Wear Strips 53P8748 Label, Tray Option Number 53P8227 Clip, 250 Tray Wear 53P8229 Finger, Autosize 53P8228...
Page 291: Assembly 21: Integrated Paper Tray - 250 Sheet
Infoprint 1120 and 1125 Assembly 21: Integrated Paper Tray - 250 Sheet 7-48 Service Manual...
Page 292 Infoprint 1120 and 1125 Asm- Part Units Description Index Number 21 - 1 53P8446 Tray, Integrated 250 Sheet 53P9136 Restraint, Back 250 Sheet Tray 53P8823 Restraint, Side 250 Sheet Tray 56P1279 Wear Strips 53P8483 Label, Tray Option Number 53P8227 Clip, 250 Tray Wear 53P8229 Finger, Autosize 53P8228...
Page 293: Assembly 22: 500-Sheet Tray
Infoprint 1120 and 1125 Assembly 22: 500-Sheet Tray 7-50 Service Manual...
Page 294 Infoprint 1120 and 1125 Asm- Part Units Description Index Number 22 - 1 53P8294 Sensor, Paper Low 53P8617 Parts Packet, Screw (Auto Comp Mounting) 53P8315 Pick Arm Assembly 75P5958 Pick Roll Assembly (2 per pack) 53P8482 Base, 500 Tray 53P8209 Pad, Base 500 53P8322 Spring, Tray Bias...
Page 295 Infoprint 1120 and 1125 Assembly 22: 500-Sheet Tray (continued) 7-52 Service Manual...
Page 296 Infoprint 1120 and 1125 Asm- Part Units Description Index Number 22 - 26 53P8263 Cable, 500 Auto Connect Bottom 53P8568 Wear Plate, Pass Thru 53P8257 Roll Assembly, Drive 500 53P8617 Parts Packet, Screw (Wear Plate Mounting) 53P8330 Retainer, Roller 53P8331 Roller, Skewed Backup 53P8325 Bearing, Drive Roll...
Page 297: Assembly 23: Duplex Unit
Infoprint 1120 and 1125 Assembly 23: Duplex Unit 7-54 Service Manual...
Page 298 Infoprint 1120 and 1125 Asm- Part Units Description Index Number 23 - 1 53P8498 Cover, Engine Board 53P8517 Main Frame Assembly 250 Duplex 53P8517 Main Frame Assembly 500 Duplex 53P8280 Idler Assembly, Belt Tension 53P8282 Spring, Aligner 53P8279 Guide Assembly, Paper 53P8499 Guide Assembly, Paper 53P8274...
Page 299 Infoprint 1120 and 1125 Assembly 23: Duplex Unit (continued) 7-56 Service Manual...
Page 300 Infoprint 1120 and 1125 Asm- Part Units Description Index Number 23 - 30 53P8272 Cable, Auto Connect Bottom 53P8255 Gear, Pass Thru Drive Roll 53P8271 Cable, Auto Connect Top 53P8319 Parts Packet, Screw (Main Frame Assembly Mounting) 53P8277 Gear, Duplex Bevel 53P8323 Pan, Engine Board Drip 53P8260...
Page 301 Infoprint 1120 and 1125 Assembly 23: Duplex Unit (continued) 7-58 Service Manual...
Page 302 Infoprint 1120 and 1125 Asm- Part Units Description Index Number 23 - 42 53P9118 Top Cover Assembly, Movable 250 Duplex 53P8502 Top Cover Assembly, Movable 500 Duplex 53P9121 Top Cover Assembly, Fixed 250 Duplex 53P8503 Top Cover Assembly, Fixed 500 Duplex 53P8324 Guide, Lower Entry 250 Duplex 53P8515...
Page 303: Assembly 24: Envelope Feeder
Infoprint 1120 and 1125 Assembly 24: Envelope Feeder 7-60 Service Manual...
Page 304 Infoprint 1120 and 1125 Asm- Part Units Description Index Number 24 - 1 53P8308 Paper Weight Assembly 53P8518 Guide, Edge 53P8520 Cover, Top 53P8340 Sensor, Envelope Pass Thru 53P8311 Clutch, Restraint/Gear 53P8521 Cover, Right Side 53P8309 Support, Slide Out 53P8342 Roller, Support 53P8304 Motor, Stepper D.C.
Page 305: Assembly 25: High-Capacity Feeder
Infoprint 1120 and 1125 Assembly 25: High-Capacity Feeder 7-62 Service Manual...
Page 306 Infoprint 1120 and 1125 Asm- Part Units Description Index Number 25 - 1 53P8372 Frame, Printer Support Frame 2 53P8380 Parts Packet, Screw (Printer Support 2 Frame Mounting 53P8395 Clamp, Feed Frame 53P8380 Parts Packet, Screw (Feed Frame Clamp) 53P8391 Bearing, Nyliner Leadscrew Top 53P8368 Cover, Side...
Page 307 Infoprint 1120 and 1125 Assembly 25: High Capacity Feeder (continued) 7-64 Service Manual...
Page 308 Infoprint 1120 and 1125 Asm- Part Units Description Index Number 25 - 28 53P8244 Guide, Rear Paper use with 53P8247 53P8380 Parts Packet, Screw (Top Frame Mounting) 53P8247 Frame Assembly, Top with labels 53P8380 Parts Packet, Screw 53P8382 Parts Packet, Washer (Top Frame Clamp) 53P8400 Clamp, Top Frame Mounting 53P8381...
Page 309 Infoprint 1120 and 1125 Assembly 25: High Capacity Feeder (continued) 7-66 Service Manual...
Page 310 Infoprint 1120 and 1125 Asm- Part Units Description Index Number 25 - 60 53P8596 Parts Packet, Screw w/washer (Motor Mt) 53P8597 Parts Packet, Nut & washer (Drive Pulley Plate) 53P8598 Motor Assembly, DC 53P8389 Parts Packet, Foot (Stabilizer) 53P8389 Parts Packet, Mounting Feet 53P8807 Belt, DC Motor Drive 53P8375...
Page 311 Infoprint 1120 and 1125 Assembly 25: High Capacity Feeder (continued) 7-68 Service Manual...
Page 312 Infoprint 1120 and 1125 Asm- Part Units Description Index Number 25 - 90 53P8249 Parts Packet, Retainer (Aligner Assembly) 53P8255 Gear, Feed Roll 53P8259 Bellcrank, Roller Release 56P0557 Card Assembly, 2000 Tray Option 53P8617 Parts Packet, Screw (Tray Option Card Mtg) 53P8380 Parts Packet, Screw (Door to Door Frame...
Page 313 Infoprint 1120 and 1125 Assembly 25: High Capacity Feeder (continued) 7-70 Service Manual...
Page 314 Infoprint 1120 and 1125 Asm- Part Units Description Index Number 25 - 95 53P8617 Parts Packet, Screw (Auto Com p Assembly Mounting) 53P8379 Arm Assembly, Pick 2000 75P5958 Roll Assembly, Pick (2 per pack) 53P8392 Base, 2000 Option 53P8617 Parts Packet, Screw (Deflector Mounting) 53P8383 Deflector, Base 53P8265...
Page 315: Assembly 26: Kiosk - Vertical Paper Adapter
Infoprint 1120 and 1125 Assembly 26: Kiosk - Vertical Paper Adapter 7-72 Service Manual...
Page 316 Infoprint 1120 and 1125 Asm- Part Units Description Index Number 26 - 1 53P8608 Bail, Support 53P8621 Arm Assembly, Pivot 53P8643 Mounting, Frame Assembly 53P8615 Parts Packet, Retainer 53P8770 Parts Packet, Screw 53P8627 Gear, Idler 53P8626 Gear, Idler 53P8427 Shaft, Drive Rear 53P8756 Tray Assembly, Backup Roller 53P8472...
Page 317: Assembly 27: Kiosk - Horizontal Paper Adapter
Infoprint 1120 and 1125 Assembly 27: Kiosk - Horizontal Paper Adapter 7-74 Service Manual...
Page 318 Infoprint 1120 and 1125 Asm- Part Units Description Index Number 27 - 1 53P8608 Bail, Support 56P8621 Arm Assembly, Pivot 53P8643 Mounting, Frame Assembly 53P8615 Parts Packet, Retainer 53P8770 Parts Packet, Screw 53P8627 Gear, Idler 53P8626 Gear, Idler 53P8427 Shaft, Drive Rear 53P8756 Tray Assembly, Backup Roller 53P8472...
Page 319: Assembly 28: Options
Infoprint 1120 and 1125 Assembly 28: Options Asm- Part Units Description Index Number 56P0694 4MB SDRAM DIMM 56P0695 8MB SDRAM DIMM 56P0696 16MB SDRAM DIMM 56P0697 32MB SDRAM DIMM 56P0698 64MB SDRAM DIMM 56P0699 128MB SDRAM DIMM 53P8575 2MB Flash DIMM 53P8576 4MB Flash DIMM 53P8577...
Page 320 Infoprint 1120 and 1125 Assembly 28: Options (continued) Asm- Part Units Description Index Number 53P8822 Tray Assembly, 250 Special Media 53P8802 Tray, Universal Adjustable 250 Sheet 56P1100 Cartridge, Empty Shipping 53P8853 Drive, Forms HD 2.1GB or larger 53P8475 Kit, Cap/Stack Bails 500 53P8752 MarkNet N2001e 10/100 Ethernet 53P8753...
Page 321: Assembly 29: Miscellaneous
Infoprint 1120 and 1125 Assembly 29: Miscellaneous Asm- Part Units Description Index Number 53P8481 Parts Packet, Screw 53P8361 Parts Packet, Contact Kit 53P8249 Parts Packet, Retainers 53P8250 Parts Packet, Springs Paper Feed 53P8251 Parts Packet, Duplex Option Fan Mounting 53P8268 Parts Packet, Duplex Option Cam Follower Assembly 53P8252...
Page 322 Infoprint 1120 and 1125 Assembly 29:Miscellaneous (continued) Asm- Part Units Description Index Number 53P8472 Parts Packet, Pulley - Kiosk 53P8770 Parts Packet, Screw - Kiosk 53P8774 Grease Packet, Nyogel 744 Grease Packet, IBM 23 53P9124 Packaging, 250/250 printer 53P8817 Packaging, 500/250 printer 7-79 Parts Catalog...
Page 323 Infoprint 1120 and 1125 7-80 Service Manual...
Page 324 Infoprint 1120 and 1125 Index Hardware Tests 3-11 Button Test 3-11 Acronyms LCD Test 3-11 Adjustment Procedures Parallel Wrap Test 3-13 Duplex Motor Drive Belts ROM Memory Test 3-13 Fuser Solenoid SDRAM Memory Test 3-12 Gap Adjustment Serial Wrap Test 3-13 Paper Alignment Assembly Input Tray Tests...
Page 325 Infoprint 1120 and 1125 Fuser Board 5-12 Developer Drive 7-22 Duplex Unit 7-54 Electronics I 7-30 Electronics II 7-34 Hardware Tests 3-11 Electronics III 7-36 HVPS Connectors Electronics IV 7-38 Electronics VI 7-42 Envelope Feeder 7-60 7-42 Frame Input Tray Feed Test 3-15 High-Capacity Feeder 7-62...
Page 326 Infoprint 1120 and 1125 Duplex Motor 4-20 Paper Size Sensing Board 4-53 EMC Shields 4-21 Pick Roll 4-53 Inner EMC Shield 4-21 Printhead 4-54 Outer EMC Shield 4-22 Redrive Assembly 4-55 Engine Board 4-23 Smart Contact Assembly 4-56 Frames 4-25 Toner Sensor 4-57 EP Frame Assembly...
Page 327 Infoprint 1120 and 1125 Transfer Roll 2-103 Part Numbers Setting Configuration ID 3-20 1339535 7-31 Setting the Page Count 3-18 1339537 7-31 Status Messages 2-22 1339538 7-31 Symptom Tables 2-36 1339539 7-31 Base Printer 2-36 1339540 7-31 Duplex Unit 2-38 1339541 7-31 Envelope Feeder 2-38...
Page 328: Index
Infoprint 1120 and 1125 53P8243 7-27 53P8293 7-27 53P8244 7-65 53P8294 7-45, 7-51 53P8245 7-57 53P8304 7-61 53P8247 7-65 53P8305 7-61 53P8249 7-13, 7-25, 7-27, 7-53, 7-67, 53P8306 7-61 7-69, 7-78 53P8307 7-61 53P8250 7-78 53P8308 7-61 53P8251 7-59, 7-78 53P8309 7-61 53P8252 7-61, 7-78 53P8310 7-63...
Page 329 Infoprint 1120 and 1125 53P8360 7-3, 7-78 53P8406 7-73, 7-75 53P8361 7-78 53P8409 7-25 53P8362 7-45, 7-57 53P8414 7-77 53P8363 7-63 53P8419 7-33, 7-76 53P8364 7-65 53P8420 7-76 53P8366 7-65 53P8423 7-45 53P8366 7-65 53P8424 7-71 53P8367 7-63 53P8425 7-59 53P8368 7-63 53P8427 7-73, 7-75 53P8369 7-63...
Page 330 Infoprint 1120 and 1125 53P8487 7-25 17, 7-21, 7-23, 7-25, 7-29, 7-33, 7- 53P8488 7-25 35, 7-45, 7-51, 7-53, 7-67, 7-69, 7- 53P8491 7-53 53P8492 7-53 53P8626 7-73, 7-75 53P8493 7-45, 7-51, 7-57, 7-61, 7-71 53P8627 7-73, 7-75 53P8494 7-53 53P8632 7-31 53P8495 7-57 53P8634 7-39...
Page 331 Infoprint 1120 and 1125 53P8813 7-67 53P8904 7-39 53P8814 7-67 53P8905 7-41, 7-43 53P8815 7-63 53P8906 7-41, 7-43 53P8817 7-79 53P8908 7-39 53P8818 7-79 53P8909 7-3, 7-39 53P8819 7-79 53P8910 7-41, 7-43 53P8821 7-77 53P8911 7-41, 7-43 53P8822 7-77 53P8912 7-5 53P8823 7-49 53P8913 7-5 53P8823 7-47...
Page 332 Infoprint 1120 and 1125 53P9113 7-33 56P0699 7-76 53P9114 7-76 56P1015 7-33 53P9115 7-37 56P1118 7-33, 7-76 53P9116 7-59 56P1139 7-7, 7-37 53P9117 7-55 56P1234 7-33, 7-76 53P9118 7-59 56P1279 7-47, 7-49 53P9119 7-3 56P2030 7-76 53P9120 7-7 56P2162 7-21 53P9121 7-59 56P2540 7-47 53P9122 7-55...
Page 333 Infoprint 1120 and 1125 I-10 Service Manual...

This manual is also suitable for:

T520n T522 T522n

Lexmark T520 Service Manual

Notices and Safety Information

Preface

General Information

Diagnostic Information

Infoprint 1120 and 1125

Diagnostic Aids

Infoprint 1120 and 1125

Repair Information

Infoprint 1120 and 1125

Connector Locations

Preventive Maintenance

Parts Catalog

Infoprint 1120 and 1125

Index

Quick Links

Infoprint 1120 and 1125

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Summary of Contents for Lexmark T520