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Lexmark X940e X945e MFP

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Lexmark X940e X945e MFP Manuel de service

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Description

Lexmark X940e & X945e MFP 7510 Service Manual
Revision: March 23, 2012

The Lexmark™ X940e and X945e are color laser MFPs that provide print, copy, scan, and fax functions. All information in this service manual pertains to both models unless explicitly noted.

Table of contents . . . iii
Notices and safety information xxi
Laser notice . xxi
Safety information. . . . .xxvii
Preface . . . . . xxx
Change history . . . . . .ii-xxx
Navigation buttons . . . . ii-xxxi
Conventions. . . . xxxi
General information . . . 1-1
Printer technology . . . 1-1
Processor . . . . .  1-1
Memory . . . . .  1-1
Acoustics . . . 1-1
Environment . . . . . 1-1
Connectivity . . . 1-1
Size and weight – without finisher . . 1-1
Specifications . . 1-1
Printer overview . . . 1-3
Basic model . . . . . 1-3
Configured model . . . . . 1-4
Printer theory . . . . . .1-5
Media transport . . . . . 1-5
Media transport path . . 1-5
MFP paper path rolls . . . .1-6
MFP sensors . . 1-7
Functions of main components . . 1-7
Media tray assembly . . 1-7
Rear media guide . . 1-8
End guide . . . . 1-8
Bottom plate . . 1-8
Media tray assembly . 1-8
Detection of media size . . 1-8
Media feed unit assembly . . 1-8
Media feed/lift motor . . 1-9
Switch (media size) . . . 1-9
Sensor (media out) . . . 1-9
Sensor (media level) . . 1-9
Sensor (feed-out) . . 1-9
Multi-purpose feeder (MPF) . . . 1-9
MPF feed roll . . . 1-10
MPF pick solenoid . . . 1-10
Sensor (MPF media out) . . 1-10
Sensor (MPF media width) . . 1-10
Media size . . . . 1-10
Registration . . . 1-11
Sensor (registration) . 1-11
Sensor (transparency detect) . . 1-11
Registration clutch . 1-11
Media transport roll assembly . . 1-11
Registration roll assembly . . . 1-11
Transfer . . . 1-12
Transfer belt drive motor assembly . . 1-12
Transfer belt cleaning assembly . . .1-12
Transfer belt unit assembly . . . .1-13
Transfer belt steering motor . . . .1-13
2nd transfer roll assembly . . . . .1-13
2nd transfer roll retract motor . . . . .1-13
Sensor (2nd transfer roll HP) . . . . .1-14
Printhead assembly . . . . .1-14
Printhead shutter . . . .1-17
Fuser . . . .1-18
Heat roll . . . . .1-18
Pressure belt . . . . .1-19
Heater lamp . . . .1-19
Thermostat . . . . . .1-19
Front thermistor . . .1-19
Rear thermistor . . .1-19
Fuser exit sensor . . . .1-19
Exit . . . . . .1-19
Standard media exit roll assembly . . . .1-20
Sensor (standard bin full) . . . .1-20
Standard media exit shift motor . . .1-20
Duplex diverter gate . . . .1-20
Drive . . . . . ..1-20
K developer/transport drive motor assembly .1-20
MPF/transport drive motor . . .1-20
CMYK PC cartridge drive motor assembly .1-21
CMY developer drive motor assembly . .1-22
K developer clutch . . .1-22
CMYK toner add motor assembly .1-22
Waste toner agitator motor assembly . . .1-23
Electrical components and controller . . .1-23
Switch (main power) . .1-23
Finisher AC output . . .1-23
Switch (printer front door interlock) and switch (printer left door interlock) . .1-23
Switch (printer left lower door interlock) . . .1-23
Fuser cooling fan . .1-23
AC drive card assembly . . .1-23
5V LVPS card assembly . . .1-24
24V LVPS card assembly . . . .1-24
CMYK transfer roll HVPS card assembly . .1-24
Developer roll HVPS card assembly .1-24
Charge roll HVPS card assembly . . . .1-24
Upper printer engine card assembly .1-25
Lower printer engine card assembly .1-25
RIP card assembly . . .1-25
Control . . .1-26
Media size control . . . ..1-26
Printhead control . . . . .1-26
Rotation of printhead motor . . . . . .1-26
Determination of printhead ready . . . . . .1-27
Printhead reference value . . . . .1-27
Fuser control . . . . ..1-27
Fuser control method . . . . .1-27
Main/sub heater lamps on/off control . . .1-27
Fuser warm-up . . . .1-27
Xerographic process during a print cycle . . .1-28
Charge . . . .1-29
Exposure . . . .1-30
Development . . .1-30
Transfer . . . . .1-31
Cleaning . . 1-32
Discharge . . . 1-32
Auto density sensing . 1-33
Document scanning . . . 1-34
Document scanning at platen . 1-34
Document scanning at ADF . . 1-35
Setting a document . . 1-35
Preparation for feed . . . 1-35
Pre-feed . . . . 1-36
Pre-registration . . . 1-36
Scan control . . . 1-37
Inversion . . . . 1-37
Simplex document . . . 1-38
Duplex document . . . 1-39
Image data flow . . .1-41
Drive torque transfer scheme . . . 1-42
ADF feed motor assembly . . . 1-42
ADF registration motor . . . . 1-42
Gear layout . . . . 1-43
Names and functions of components . . 1-45
Scanner unit assembly . . . . 1-45
Sensor (platen length APS 1) . . . . 1-45
Sensor (platen length APS 2) . . 1-45
Switch (platen interlock) . . 1-45
Sensor (ADF angle) . 1-45
Scanner drive motor assembly . . . 1-45
Sensor (scanner HP) . 1-45
Scanner exposure lamp . . 1-45
Exposure lamp PS card assembly 1-45
Lens assembly . . . 1-45
Scanner controller card assembly . . . 1-45
Scanner cooling fan . 1-45
ADF . . . . . 1-46
Sensor (ADF tray length 1) . . 1-46
Sensor (ADF tray length 2) . . 1-46
Sensor (document tray width 1) . . 1-46
Sensor (ADF document set) . . . 1-46
Pick roll position motor assembly . . . 1-46
Sensor (pick roll position HP) . . . . 1-46
ADF Document Set LED . . . . 1-47
Switch (ADF left cover interlock) . . . . 1-47
ADF controller card assembly . . 1-47
Sensor (ADF APS 1) . . . 1-47
Sensor (ADF APS 2) . 1-47
Sensor (ADF APS 3) . 1-47
Sensor (ADF sheet through) . 1-47
Sensor (ADF pre-registration) . . 1-47
Sensor (ADF registration) . . . 1-48
Sensor (ADF inverter) . . 1-48
ADF feed motor assembly . . . 1-48
ADF registration motor . . . 1-48
Inverter solenoid assembly . . 1-48
Control . . . . . 1-50
Document size detection at scanner unit assembly 1-50
Document size detection timing . . 1-50
Identification of standard document sizes . 1-50
ADF document size detection . . 1-52
Document scanning steps . 1-54
AGC (auto gain control): white level coarse adjustment 1-55
AOC (auto offset control) . .1-55
Shading compensation . . . .1-55
White level variation compensation . .1-55
Black level variation compensation . . . .1-55
TTM theory . . . .1-56
Media transport . . . ..1-57
Media transport path . . .1-57
Media transport path . . .1-58
Functions of main components . . .1-58
Media tray assembly . . . .1-58
Rear media guide . . . .1-58
Bottom plate . . . . . .1-59
Tray 2 media tray assembly . . .1-59
Tray 3 or 4 media tray assembly . . .1-60
TTM media feed units . . . . .1-61
Media feed unit assembly . . . . . .1-61
Media feed lift motor . . . . . .1-61
Switch (media size) . . . .1-61
This switch (media size) sets the size of media supplied from each media tray a .1-61
Switch (TTM media size) . . . .1-61
Sensor (media out) . . .1-61
Sensor (media level) . . .1-61
Main components . .1-62
Switch (tray module left door interlock) . . .1-62
Sensor (tray 2 feed-out) . . .1-62
Sensor (tray 3 feed-out) . . .1-62
Sensor (tray 4 feed-out) . . .1-62
Tray module media transport roll assembly . .1-62
Tray module drive motor . .1-63
TTM tray 4 media transport motor . . .1-63
TTM controller card assembly . . . .1-63
Switch (TTM media size) . . . .1-64
3TM theory . . . . . ..1-65
Media transport . . . .1-66
Media transport path . . .1-66
Media transport path . . .1-67
Functions of main components . . .1-67
Media tray assembly . . . .1-67
Media feed unit assembly . . . .1-67
Rear media guide . . . . . .1-67
Bottom plate . . . . . .1-68
Tray 2, 3, 4 media tray assembly . . .1-68
3TM media feed units . . . . . ..1-68
Media feed unit assembly . . . .1-68
Media feed lift motor . . . .1-68
Switch (media size) . . . .1-68
Sensor (media out) . . .1-68
Sensor (media level) . . .1-68
Main components . . . .1-69
Switch (tray module left door interlock) . . .1-69
Sensor (tray 2 feed-out) . . .1-69
Sensor (tray 3 feed-out) . . . . .1-69
Sensor (tray 4 feed-out) . . . . .1-69
Tray module media transport roll assembly . .1-69
Tray module drive motor . .1-70
3TM controller card assembly . . . .1-70
Switch (media size) . . . .1-71
1TM theory . . .1-72
Media transport . . . . . .1-73
Media transport path . . . . . 1-73
Media transport path . . . 1-74
Functions of main components . . . 1-74
Media tray assembly . . . . 1-74
Rear media guide . . . 1-74
Bottom plate . . . . . 1-74
Tray 2 media tray assembly . . 1-75
1TM media feed units . . . 1-75
Media feed unit assembly . 1-75
Media feed lift motor . 1-75
Switch (media size) . . 1-76
Sensor (media out) . . 1-76
Sensor (media level) . . . 1-76
Main components . . 1-76
Switch (tray module left door interlock) . 1-76
Sensor (tray 2 feed-out) . . 1-77
Tray module media transport roll assembly . 1-77
Tray module drive motor . . 1-77
1TM controller card assembly . . 1-77
Switch (media size) . . 1-78
Duplex . . . .  1-79
Layout of media transport path . . . 1-80
Functions of main components . 1-80
Switch (duplex left door interlock) . 1-80
Sensor (duplex wait) . . . . . 1-80
Duplex media transport roll assembly . . 1-80
Duplex controller card assembly . . . . 1-81
Duplex drive motor . . . . 1-81
Tools required for service . . . . . 1-82
Acronyms . . . 1-83
Diagnostic information . . . . 2-1
Start . . . 2-1
Confirm the installation status . . . . 2-2
Power-on Reset sequence . . . . .  2-2
Control panel . . . . . 2-3
Home screen and Home screen buttons . . . . . 2-5
Using the LCD touch-screen buttons . . . . . 2-8
Sample screen one . . . .2-8
Information on touch-screen buttons . . . 2-8
Sample screen two . . .2-10
Information on touch-screen buttons . . 2-10
Other touch-screen buttons . . 2-11
Features . . . 2-12
To enter the diagnostic menu: . . 2-13
Error code table . 2-13
Service checks . . 2-39
200.00 Sensor (registration) late jam . . 2-39
200.01 Sensor (registration) lag jam . . 2-40
200.02 Sensor static jam . 2-42
200.03 Sensor (media on belt) late jam . . 2-43
201.00 Sensor (fuser exit) late jam . 2-44
202.00 Sensor (fuser exit) lag jam . . . 2-46
230.00 Sensor (duplex wait) late jam (duplex media feed) . 2-47
231.00 Sensor (registration) late jam (duplex feed) . 2-49
231.01 Sensor (registration) late jam (duplex media feed) . 2-51
241.00 Sensor (tray 1 feed-out) late jam . 2-53
242.00 Sensor (tray 2 feed-out) late jam . . 2-55
242.01 Sensor (tray 1 feed-out) late jam (feeding from tray 2) 2-56
243.00 Sensor (tray 3 feed-out) late jam . .2-57
243.01 Sensor (tray 2 feed-out) late jam (feeding from tray 3) .2-59
244.00 Sensor (tray 4 feed-out) late jam . . .2-61
244.01 Sensor (tray 3 feed-out) on jam (feeding from tray 4) . .2-63
250.00 Sensor (registration) late jam (feeding from the MPF) . .2-64
290.00 Switch (sheet through) static jam . .2-66
290.01 Sensor (sheet through) late jam . . .2-67
290.02 Sensor (ADF pre-registration) late jam (side 1) .2-69
290.03 Sensor (ADF pre-registration) lag jam . .2-70
290.10 Sensor (ADF pre-registration) static jam . .2-73
290.11 Sensor (ADF registration) late jam (side 1) . .2-74
290.12 Sensor (ADF registration) late jam (side 2) . .2-75
290.13 Sensor (ADF registration) lag jam . .2-78
290.14 Sensor (ADF inverter) late jam (Inverting) .2-80
290.15 Sensor (ADF registration) lag jam (inverting) . .2-82
290.20 Sensor (ADF width APS1), sensor (ADF width APS 2) and sensor (ADF width APS 3) static
jam . . . .2-85
290.21 Sensor (ADF width APS 1) static jam .2-86
290.22 Sensor (ADF width APS 2) static jam .2-87
290.23 Sensor (ADF width APS 3) static jam .2-88
291.00 Sensor (ADF registration) static jam . . . .2-89
291.01 Sensor (ADF inverter) lag jam (inverting) . .2-89
291.02 Sensor (ADF inverter) late jam 2 . . .2-91
291.03 Sensor (ADF inverter) lag jam . . .2-93
292.01 ADF raised jam . .2-95
292.02 ADF left cover jam . .2-95
293.00 Document missing jam . .2-95
294.00 Sensor (ADF inverter) static jam . . .2-96
294.01 Sensor (ADF pre-registration) late jam (side 2) .2-97
294.02 Sensor (ADF pre-registration) lag jam (inverting) .2-99
295.00 Size mismatch jam (mix-size) . .2-102
295.01 Size mismatch jam (no mix-size) ..2-104
295.02 Invalid combine size jam . . . .2-105
295.03 Too short size jam . . .2-106
295.04 Too long size jam . . . .2-107
295.05 Mixed size not supported . . . .2-109
298.01 Scanner cable missing or unplugged . .2-109
Black toner cartridge detection error 841.00 Image pipeline ASIC error . .2-109
842.00 Scanner communication error . . . .2-110
842.01 Scanner communication error . .2-111
842.02 Scanner communication error . .2-112
842.03 Scanner communication error . .2-112
842.04 Scanner communication error . .2-113
842.10 Scanner unit assembly - ADF communication error . .2-113
842.11 Scanner communication error (by scanner) . .2-114
842.12 Scanner unit assembly communication error .2-114
843.00 Sensor (scanner HP) error . .2-115
843.01 Scanner carriage over run error . .2-116
843.10 ADF RAM test error . . . .2-117
843.11 ADF EEPROM error . . . . ..2-117
843.12 ADF pick roll position lift up error . . .2-117
843.20 Scanner unit assembly connection error .2-119
843.21 Scanner unit assembly EEPROM error . .2-119
843.22 Scanner unit assembly EEPROM sub system error . .2-119
843.23 Scanner cooling fan error . . .2-120
843.24 Image processing error . . .2-121
843.25 Scanner controller card assembly error 1 . .2-121
843.26 Scanner controller card assembly error 2 . .2-122
844.00 Exposure lamp error . . ..2-122
844.01 White reference/exposure lamp illumination error . 2-123
845.00 CCD error . 2-124
845.01 CCD initialization (lamp on) error . 2-125
845.02 CCD initialization (lamp off) error . . 2-126
846.00 Scanner communication error . 2-126
846.01 Scanner communication error . 2-127
846.10 Sensor (ADF width APS X) error . . . 2-127
846.12 Scanner unit assembly software logic error 2-129
846.13 Switch (platen interlock) open . 2-129
847.00 Modem error . . .2-130
847.01 Fax storage error . . . .2-130
848.00 Fax/modem configuration ID mismatch . 2-131
849.00 Hard drive/configuration ID mismatch . 2-131
900.xx System software error . .2-132
901.XX RIP card assembly software error . . 2-134
902.00 General upper engine error fuse #1 . . . 2-135
902.01 General upper engine error fuse #2 . . . 2-136
902.02 General upper engine error fuse #3 . 2-137
902.03 General lower engine error fuse #1 . . . 2-138
902.04 General lower engine error fuse #2 . 2-138
902.05 General lower engine error fuse #3 . 2-139
902.06 General lower engine error fuse #4 . 2-140
902.07 General lower engine error fuse #5 . . . 2-141
903.00 K developer/transport drive assembly motor error 2-142
903.01 K PC drive motor error . 2-143
903.02 CMY PC drive motor error . . 2-144
903.03 Developer drive motor error . . 2-145
904.00 Sensor (transfer belt HP) late error . . 2-146
904.01 Transfer belt position failure . . 2-151
904.02 Sensor (transfer belt edge) failure . 2-156
904.03 Sensor (2nd transfer roll retract HP) late error . 2-159
904.04 Sensor (2nd transfer roll retract HP) lag error 2-160
904.05 Sensor (CMY transfer roll retract HP) late error 2-162
904.06 Sensor (CMY transfer roll retract HP) lag error . 2-164
904.07 CMY transfer roll retract motor time out 2-166
905.00 NVM read/write cannot be executed error . 2-167
905.01 Marking device video error . 2-167
905.02 Marking device Xerographics error 2-168
905.03 Marking device other1 error . . 2-168
905.04 Marking device paper handling error . 2-168
905.05 Marking device other2 error 907.00 Printhead polygon mirror motor error 2-168
907.01 Y laser SOS internal error . . 2-169
907.02 M laser SOS internal error . . 2-169
907.03 C laser SOS internal error . . 2-170
907.04 K laser SOS internal error . . 2-170
907.05 Printhead control error . 2-171
908.00 Waste toner full error . . . 2-171
911.00 24V LVPS cooling fan error . . . 2-172
911.01 Transfer belt drive motor cooling fan error 2-172
911.02 Fuser cooling fan lock error . . 2-173
918.00 Standard media exit shift error . 2-173
920.00 Fuser main lamp overheat error . . . 2-174
920.01 Front thermistor disconnection error . 2-174
920.02 Fuser sub lamp overheat error . . 2-175
920.03 Rear thermistor disconnection error . 2-175
920.04 Main lamp warm up error . . . 2-176
920.05 Main lamp on-time error . . 2-177
920.06 Sub lamp warm-up failure . . 2-177
920.07 Sub lamp on-time error . . 2-178
924.00 Yellow PC smartchip communication error . .2-178
924.01 Magenta PC smartchip communication error .2-179
924.02 Cyan PC smartchip communication error . .2-179
924.03 Black PC smartchip communication error .2-180
925.00 Sensor (Y ATC) error . . .2-181
925.01 Sensor (M ATC) error . . . .2-181
925.02 Sensor (C ATC) error . . .2-182
925.03 Sensor (K ATC) error . . .2-182
930.00 Black toner RFID communication failure .2-183
930.01 Cyan toner RFID communication failure .2-183
930.02 Magenta toner RFID communication failure . .2-183
930.03 Yellow toner RFID communication failure . .2-184
940.00 MPF tray 5 size sensing error . .2-184
941.00 Switch (media size) size sensing error (tray 1) . .2-185
941.01 Sensor (media level) late error (tray 1) . . .2-186
942.00 Switch (media size) size sensing error (tray 2) . .2-187
942.01 Sensor (media level) late error (tray 2) . . .2-187
943.00 Switch (media size) size sensing error (tray 3) . .2-188
943.01 Sensor (media level) late error (tray 3) . . .2-189
944.00 Switch (media size) size sensing error (tray 4) . .2-190
944.01 Sensor (media level) late error (tray 4) . . .2-191
950.00 through 950.29 EPROM mismatch failure . .2-192
950.30 through 950.60 EPROM mismatch failure . .2-193
951.XX RIP card assembly NVRAM failure .2-194
952.XX Interconnect card assembly NVRAM CRC failure .2-194
953.XX Operator panel assembly NVRAM failure . .2-195
954.XX Interconnect card assembly NVRAM failure . .2-195
955.XX RIP card assembly NAND CRC failure . .2-196
956.00 RIP card assembly processor failure . .2-196
956.01 RIP card assembly processor over temperature failure . .2-196
956.02 RIP card assembly cooling fan failure .2-197
956.03 RIP card assembly FPGA failure . .2-197
980.00 Communication error with 1TM, 3TM, or TTM assembly . .2-197
980.01 HVPS controller communication error .2-198
980.02 Communication error between printer and RIP card assembly .2-199
980.03 Communication error with finisher controller card assembly . .2-199
1TM, 3TM or TTM left door assembly open .2-200
Duplex left door assembly open . . . .2-201
Media size mismatch in width . . .2-202
Media size mismatch in width . . . .2-202
No media in the selected media tray . . . .2-203
Paper is installed (short edge) in the media paper tray .2-205
PC cartridge end of life . . .2-205
Printer front door assembly open . . . .2-206
Printer left door open . . . .2-207
Transfer belt access door open . . . .2-208
Printer left lower door assembly open . .2-208
100K maintenance required . . . . ..2-209
600K maintenance required . . . . .2-209
ADF maintenance required . . . .2-210
Standard media bin full . . . .2-210
Scanner unit assembly not detected . . . . . .2-210
ADF left cover assembly is open . . . .2-211
Toner cartridge error . . . .2-212
Toner cartridge set error . .2-212
Waste toner cartridge full ..2-213
Waste toner cartridge not detected . .2-214
Waste toner cartridge nearly full . .2-214
PC cartridge not detected . .2-215
PC cartridge invalid 2-215
CMY PC cartridges nearly exhausted . 2-216
CMY PC cartridges exhausted . 2-216
K PC cartridge nearly exhausted . 2-217
K PC cartridge exhausted 2-217
toner cartridge nearly empty . 2-218
toner cartridge empty . 2-219
toner cartridge detection error . 2-220
Incorrect black toner cartridge error 2-220
Incorrect toner cartridge error 2-220
Tray 1 media size mismatch error 2-221
Tray 2 media size mismatch error 2-221
Tray 3 media size mismatch error 2-222
Tray 4 media size mismatch error 2-223
Tray 1 media type mismatch error 2-223
Tray 2 media type mismatch error 2-224
Tray 3 media type mismatch error 2-225
Tray 4 media type mismatch error 2-226
Image quality trouble . 2-228
Printer Related Troubleshooting . 2-228
Image quality symptoms . 2-228
Image Quality . .2-229
Faint print (Low contrast) 2-229
Blank print (no print) 2-231
Solid black . 2-233
Vertical lines and bands (process direction) 2-234
Horizontal white stripes or bands (side to side direction) . 2-236
Vertical stripes (process direction) . 2-238
Horizontal stripes (side to side direction) 2-240
Partial lack . 2-242
Spots . 2-244
After image . 2-245
Background (fog) 2-247
Skew . 2-249
Media damage . 2-251
No fuse . 2-253
Color misregistration 2-254
Deletions 2-255
High frequency bands 2-256
Diagonal banding 2-257
ADF & Scanner Related Troubleshooting 2-258
Image quality symptoms: 2-258
ADF & Scanner Image Quality . 2-259
Dark image quality (using ADF or Scanner) 2-259
Vertical lines (process direction using the ADF) 2-260
Spots (using flatbed scanner) 2-261
Skew (using ADF) . 2-262
Media damage (using ADF) 2-263
Diagnostic aids . 3-1
Repair information4-1
Connector locations 5-1
Preventive maintenance . 6-1
Parts catalog. .7-1
Index I-1
Part number index . I-9







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