Page 3 - iii; Table of Contents
iii 4402-001 Table of Contents Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . x General Information . . . . . . . . . . . . . . . . . . . . ...
Page 4 - iv
iv Service Manual 4402-001 Removal Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2 Releasing Plastic Latches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2Scanner Lid Assembly Removal . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3R...
Page 5 - Safety Information; Consignes de Sécurité
Safety Information v 4402-001 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 replacemen...
Page 6 - Norme di sicurezza
vi Service Manual 4402-001 Norme di sicurezza • Il prodotto è stato progettato, testato e approvato in conformità a severi standard di sicurezza e per l’utilizzo con componenti Lexmark specifici. Le caratteristiche di sicurezza di alcune parti non sempre sono di immediata comprensione. Lexmark non è...
Page 7 - vii; Pautas de Seguridad
Safety Information vii 4402-001 Pautas de Seguridad • Este producto se ha diseñado, verificado y aprobado para cumplir los más estrictos estándares de seguridad global usando los componentes específicos de Lexmark. Puede que las características de seguridad de algunas piezas no sean siempre evidente...
Page 8 - viii; Informació de Seguretat
viii Service Manual 4402-001 Informació de Seguretat • Aquest producte està dissenyat, comprovat i aprovat per tal d'acomplir les estrictes normes de seguretat globals amb la utililització de components específics de Lexmark. Les característiques de seguretat d'algunes peces pot ser que no sempre si...
Page 9 - ix
Page 10 - Preface
x Service Manual 4402-001 Preface This manual describes the Lexmark X73 Scan/Print/Copy (4402-001) and contains maintenance procedures for service personnel only. It is divided into the following chapters: 1. General Information contains a general description of the printer and the maintenance appro...
Page 11 - General Information; Power Consumption
General Information 1-1 4402-001 1. General Information The Lexmark X73 machine is an electro-mechanical scanner, printer, and copier that creates characters and graphics by composing programmed patterns of ink dots using a printhead and liquid ink. The printhead uses small heater plates and nozzles...
Page 12 - Scanner Specifications
1-2 Service Manual 4402-001 Scanner Specifications Scanner Type Flatbed, CCD Scan Modes True Color:48 Bit Internal (68.7 Billion Colors)24 Bit External (16.7 Million Colors) Gray Mode:12 Bits Internal (4,096 Shadesof Gray)8 Bits External (256 Shades of Gray) Text/Line Art:1 Bit Per Pixel Scan Method...
Page 13 - Operator Panel
General Information 1-3 4402-001 Operator Panel Press this button: When you want to: Setup Adjust your copy and scan settings using the Scan & Copy Control Program on your computer. Color Copy Make a color copy. Black Copy Make a black and white copy. Scan Press the scan button after selecting a...
Page 14 - Maintenance Approach; Abbreviations
1-4 Service Manual 4402-001 Maintenance Approach The diagnostic information in this manual leads you to the correct field replaceable unit (FRU) or part. Use the symptom index, service checks, and diagnostic aids to determine the symptom and repair the failure. After you complete the repair, perform...
Page 15 - Diagnostic Information; Start; “Symptom
Diagnostic Information 2-1 4402-001 2. Diagnostic Information Start Use the symptom tables, service checks, and diagnostic aids in chapter three, to determine the printer failure. Power-On Self Test (POST) Sequence Press the power button to turn machine on. • Power light turns on. • The paper feed m...
Page 16 - POST Symptom Table
2-2 Service Manual 4402-001 POST Symptom Table Symptom Action No Power or Status lights and no motors run. Go to the “Power Service Check” on page 2-14 . If okay, go to the “Operator Panel Problems” on page 2-3 . Paper feed gears do not turn Go to the “Paper Feed Service Check” on page 2-11 . Carrie...
Page 17 - Symptom Tables; Carrier Transport Problems
Diagnostic Information 2-3 4402-001 Symptom Tables Locate the symptom in the following tables and take the appropriate action. Carrier Transport Problems Maintenance Station Problems Operator Panel Problems Symptom Action • No carrier movement• Slow carrier movement• Carrier stops• Carrier slams sid...
Page 18 - Printer Communication Table
2-4 Service Manual 4402-001 Printer Communication Table Scanner Problems Symptom Action • Not able to print Test Page Check the USB cable and system board cable connections. If okay, replace system board. Go to the “System Board Removal” on page 4-12 . Symptom Action • CCD does not move• Lamp does n...
Page 19 - Paper Feed Problems
Diagnostic Information 2-5 4402-001 Paper Feed Problems Power Problems Print Quality Problems Symptom Action • Fails to pick paper• Picks more than one sheet of paper • Picks paper but fails to feed• Paper jams• Paper fails to exit• Noisy paper feed Go to the “Paper Feed Service Check” on page 2-11 ...
Page 20 - Service Checks; Carrier Transport Service Check
2-6 Service Manual 4402-001 Service Checks Carrier Transport Service Check FRU Action 1 System Board Carrier Transport Motor Check the transport carrier motor connector J4. If connected, check for approximately 28 volts on pins 1 and 2 or at the wire connections located on the rear of the transport ...
Page 22 - CCD Module Assembly Service Check
2-8 Service Manual 4402-001 CCD Module Assembly Service Check • The CCD (charged coupled device) Module will not move during POST Test. • The CCD lamp does not come on when CCD module assembly moves. FRU Action 1 CCD Module Assembly If CCD module will not move, go to the “Gear Train Assembly Service...
Page 23 - Gear Train Assembly Service Check
Diagnostic Information 2-9 4402-001 Gear Train Assembly Service Check CCD will not move or scan. FRU Action 1 Gear Train Assembly Disconnect J5 and check the reading at pin 1 and 3 for approximately 225.5 ohms. If the reading is incorrect, replace the gear train assembly. Go to the “Gear Train Assem...
Page 24 - Maintenance Station Service Check
2-10 Service Manual 4402-001 Maintenance Station Service Check The maintenance station has three functions: 1. Wipes the printhead nozzles to clean them of dirt. 2. Provides a place for printheads to fire all nozzles, keeping them clear prior to printing. 3. Seals the printhead when it is not being ...
Page 25 - Paper Feed Service Check
Diagnostic Information 2-11 4402-001 Paper Feed Service Check If your machine does not have paper jam problems, continue with the service check. If your machine does have a paper jam problem, examine it for the following before you begin the service check: • Check the entire paper path for obstructi...
Page 27 - Paper Path Service Check
Diagnostic Information 2-13 4402-001 Paper Path Service Check Examine the machine for the following before you begin this service check: • Check the entire paper path for obstructions. • Be sure the correct type of paper is being used. • Be sure the printer is installed on a flat surface. FRU Action...
Page 28 - Power Service Check
2-14 Service Manual 4402-001 Power Service Check FRU Action 1 External Power Supply Plug the external power supply into an outlet. Check for + 30 V dc. If voltage is incorrect, replace the power supply. 2 Printhead CablePaper Feed MotorCarrier Transport MotorOperator Panel Unplug the printer. Discon...
Page 29 - Print Quality Service Check
Diagnostic Information 2-15 4402-001 Print Quality Service Check FRU / Function Action 1 Printhead Cartridge Be sure the machine contains good print cartridges. 2 Color Printhead Cartridge Cross Contamination Cross contamination of color inks results in incorrect colors printed, as when green prints...
Page 31 - Scan/Copy Quality Service Check
Diagnostic Information 2-17 4402-001 Scan/Copy Quality Service Check FRU / Function Action 1 Scanned images are faded, or colors are dull, blurry or fuzzy. Images are slanted or crooked and the straight lines in the image appear to be jagged or uneven. Check the lighter/darker settings to see if it ...
Page 33 - Test Page; “Print Quality Service Check”
Diagnostic Aids 3-1 4402-001 3. Diagnostic Aids Test Page This test prints the test page. To run a complete test page of black and color patterns, be sure the printhead cartridges are in good condition. To enter the test: 1. Open the access cover. 2. Install a known good black print cartridge in the...
Page 35 - Repair Information; Note: Read the following before handling electronic parts.; Handling ESD-Sensitive Parts
Repair Information 4-1 4402-001 4. Repair Information This chapter explains how to make adjustments to the printer and how to remove defective parts. Note: Read the following before handling electronic parts. Handling ESD-Sensitive Parts Many electronic products use parts that are known to be sensit...
Page 36 - Adjustments; CAUTION: Unplug the power cord before removing any parts.; Releasing Plastic Latches
4-2 Service Manual 4402-001 Adjustments The user is directed, in the Printer Control program, to perform the printhead alignment adjustments after replacing a print cartridge. Removal Procedures The following procedures are arranged according to the name of the printer part discussed. CAUTION: Unplu...
Page 37 - Scanner Lid Assembly Removal
Repair Information 4-3 4402-001 Scanner Lid Assembly Removal 1. Open the lid. 2. Lift and remove. Rear Cover Removal 1. Remove two screws [A] from the rear cover. 2. Depress two latches [B] on the bottom of the rear cover. 3. Lift the rear cover and remove
Page 39 - CCD Module Assembly Removal
Repair Information 4-5 4402-001 CCD Module Assembly Removal 1. Remove the rear cover. 2. Disconnect the CCD cable from the system board. 3. Remove the top housing assembly. 4. Depress the shaft retainer [A]. 5. Lift and remove the shaft. 6. Remove the belt from pulleys. 7. Lift and remove the CCD mo...
Page 40 - Gear Train Assembly Removal; Access Cover Sensor Removal
4-6 Service Manual 4402-001 Gear Train Assembly Removal 1. Remove the CCD module assembly. 2. Disconnect the gear train assembly cable from the system board. 3. Remove two screws [A]. 4. Lift and remove the gear train assembly. Access Cover Sensor Removal 1. Remove the top housing assembly. 2. Disco...
Page 41 - Right Cover Removal
Repair Information 4-7 4402-001 Right Cover Removal 1. Remove the rear cover. 2. Depress two latches [A]. 3. Remove the right cover. Access Cover Removal 1. Remove the rear cover. 2. Remove the right cover. 3. Depress the access cover hinge. 4. Remove the access cover.
Page 42 - Left Cover Removal
4-8 Service Manual 4402-001 Left Cover Removal 1. Remove the rear cover. 2. Depress two latches [A]. 3. Remove the left cover.
Page 43 - Middle Frame Removal
Repair Information 4-9 4402-001 Middle Frame Removal 1. Remove the scanner lid assembly. 2. Remove the rear cover. 3. Remove the top housing assembly. 4. Disconnect the operator panel and CCD cables from the system board. 5. Remove left and right covers. 6. Remove the operator panel assembly. 7. Rem...
Page 44 - Depress the two clips [B] and slide the middle frame forward to
4-10 Service Manual 4402-001 8. Depress the two clips [B] and slide the middle frame forward to remove.
Page 45 - Print Engine Removal
Repair Information 4-11 4402-001 Print Engine Removal 1. Remove the rear cover. 2. Remove the top housing assembly. 3. Remove the left cover. 4. Remove the right cover. 5. Remove the middle frame. 6. Move carrier to the center. 7. Remove three screws [B]. 8. Slide the print engine forward and remove...
Page 46 - ASF Module Removal
4-12 Service Manual 4402-001 ASF Module Removal 1. Remove the print engine. 2. Remove three screws [A]. 3. Remove the ASF module. System Board Removal 1. Remove the print engine. 2. Remove the ASF module. 3. Disconnect the transport and paper feed motor cables from the system board. 4. Remove the fo...
Page 48 - Maintenance Station Removal
4-14 Service Manual 4402-001 Maintenance Station Removal 1. Remove the middle frame assembly. 2. Remove the print engine. 3. Depress the two clips [A]. 4. Remove the maintenance station. Belt/Idler Pulley Assembly (Print Engine) Removal 1. Remove the middle frame. 2. Slide the carrier to the left. 3...
Page 49 - Connector Locations
Connector Locations 5-1 4402-001 5. Connector Locations Units Description J2 Printhead Cable J3 Paper Feed Motor J4 Carrier Transport Motor J5 Scanner Motor J6 Operator Panel J7 CCD Module J9 Cover Sensor PS1 End-of-Forms Sensor
Page 51 - Preventive Maintenance; Lubrication Specifications
Preventive Maintenance 6-1 4402-001 6. Preventive Maintenance This chapter contains the lubrication specifications. Follow these recommendations to prevent problems and maintain optimum performance. Lubrication Specifications Lubricate only when parts are replaced or as needed, not on a scheduled ba...
Page 53 - How to Use This Parts Catalog
Parts Catalog 7-1 4402-001 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 separa...
Page 54 - Assembly 1: Covers
Page 56 - Covers
7-4 Service Manual 4402-001 Assembly 1 (cont.): Covers
Page 59 - Assembly 2: Paper Feed, Frame and Carrier Transport
Parts Catalog 7-7 4402-001 Assembly 2: Paper Feed, Frame and Carrier Transport Asm-Index Part Number Units Description 2–1 12G6121 1 ASF Module –2 12G6120 1 Printing Engine –3 12G6151 1 Encoder Strip with Clip –4 12G6123 1 Idler Pulley Assembly –5 12G6149 1 Belt, Carrier –6 12G6154 1 Maintenance Sta...
Page 60 - Assembly 3: Electronics
7-8 Service Manual 4402-001 Assembly 3: Electronics
Page 61 - Assembly 3: Electronics
Parts Catalog 7-9 4402-001 Assembly 3: Electronics 3–1 12G6177 1 CCD Module Assembly with Cable NS 12G6124 1 CCD Module Assembly NS 12G6176 1 CCD Cable –2 12G6125 1 Gear Train Assembly –3 12G6172 1 Operator Panel Assembly NS 12G6173 1 Operator Panel Overlays –4 12G6170 1 Board, System –5 12G6137 1 S...
Page 63 - Index
I-1 4402-001 Index A Abbreviations 1-4 Adjustments 4-2 B Black Copy button 1-3 Button Black Copy 1-3 Color Copy 1-3 Paper Feed 1-3 Power 1-3 Scan 1-3 Scan To 1-3 Scan To E-mail 1-3 Scan To Fax 1-3 Setup 1-3 C Color Copy button 1-3 Connector Locations 5-1 E ESD-Sensitive Parts 4-1 L Lubrication Speci...
Page 64 - Part Numbers
I-2 Service Manual 4402-001 S Safety Information 1-v Scan button 1-3 Scan To button 1-3 Scan To E-mail button 1-3 Scan To Fax button 1-3 Service Checks Carrier Transport 2-6 CCD Module Assembly 2-8 Gear Train Assembly 2-9 Paper Feed 2-11 Paper Path 2-13 Power 2-14 Print Quality 2-15 Setup Button 1-3...
