Epson EPL-N3000 - CHAPTER 3 TROUBLESHOOTING

Epson EPL-N3000

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Confidential

CHAPTER

3

TROUBLESHOOTING

Table of Contents

Default Chapter1
- Service Manual1
- About this Manual4
- Manual Configuration4
- Symbols Used in this Manual4
- Mechanical Components6
- Power Supply6
- Safety Information6
- Laser Beam7
- Table of Contents13
Chapter 1 Product Description19
Product Specifications20
- Basic Specifications20
- Paper Specifications25
- Replacement Parts28
- Controller Specifications29
List of Printer Messages30
- Operating Principles33
Overview34
- Overview of the Electrophotographic Printing34
Print Data Flow37
Driving Force Trasmission Route38
- Main Unit38
- Option Feeder41
- Duplex Unit42
- Oct42
Paper Transport43
- Paper Feeding Route43
- Paper Feeding Route Layout44
Functions of Major Components45
- Various Sensors45
- Paper Cassette46
- Paper Feeder48
- Xero49
- Fuser51
- Paper Exit & Face up Tray52
- Drive53
- Electrical54
- Option Feeder55
- Duplex56
- Oct57
Control59
- Paper Size Control59
- ROS Control59
- Fuser Control60
Chapter 2 Operating Principles60
Operating Principles of Electric Circuitry61
- Operation Overview of the Main Control Circuit Board61
Chapter 3 Troubleshooting63
Overview64
- Specified Tools64
- Procedure for Troubleshooting64
- Preliminary Checks65
- Precautions in Performing Work65
- Notes on Troubleshooting66
- Mechanical Controller Test Printing Function67
- Details of Error Messages and Solutions68
- Service Call Errors70
  - Engine Errors70
  - Controller Errors70
Troubleshooting When There Is Error Display72
- NVRAM Error73
- ROS Error73
- Fuser Error73
- FAN Error74
- Main Motor Error75
- Engine Communication Error (Aculaser M4000N Only)75
- Cover Error76
- Paper Jam/Regi to Fuser76
- Paper Jam/Exit78
- Paper Jam/Tray to Regi79
- Paper Jam/Misfeed81
- Imaging Cartridge82
- Paper Size Error83
- No Tray/Tray 1, 283
- No Tray/Tray83
- Paper Out/Tray 1,284
- Paper Out/Tray84
- Tray Paper Low/Tray 285
- Drum Life85
- Tray Paper Low/Tray85
- Fuser Life86
- Maintenance Unit Life (Aculaser M4000N Only)86
- No Tray/Tray 3, 487
- Paper Out/Tray 3, 487
- No Tray/Tray87
- Paper Out/Tray87
- Only Little Paper in Tray/Tray 3, 488
- Only Little Paper in Tray/Tray88
- No Recognition of Option 550 Paper Feeder89
- Option Duplex Cover Error90
- Option Duplex Error90
- Paper Jam/Exit to Dup91
- Paper Jam/Dup to Regi92
- Paper Jam/Duplex Misfeed92
- Paper Size Error/Duplex93
- No Recognition of Option Duplex93
- Option OCT Cover Error94
- Option OCT Error94
- Paper Jam/Exit to OCT95
- Paper Jam/Oct96
- Paper Size Error/Oct97
- Full Stack Error/Oct97
- No Recognition of Option OCT98
- Engine Communication Error98
- CPU Error99
- Standard RAM Error99
- RAM Error (Slot 0)100
- ROM Checksum Error (Font)100
- ROM Checksum Error (Program)101
- Option ROM Error101
- EEPROM Error102
- Engine Initialization Error102
- Other Hardware Error103
- Software Error103
Troubleshooting for Faulty Operation104
- Power Does Not Turn on104
- Keypad Operation Impossible107
- LCD/LED Malfunction107
- Other Printer Operation Fault108
- Face up Tray Error108
- Full Stack Error/500 Paper Exit109
Troubleshooting for Individual Units110
- Lvps111
- Main Motor112
- Ros Assy113
- Fuser Assy115
- Sensor Regi117
- Sensor no Paper118
- Interlock S/W 24V119
- Interlock S/W 5V, Switch I/L Assy120
  - Interlock4)120
  - Interlock S/W 5V, Switch I/L Assy (Harness Assy Interlock4)120
- Interlock S/W Rear121
- Switch I/L Assy (Interlock S/W Front R)121
- Pwba Exit Motor122
- Motor Assy Exit122
- Clutch Regi123
- Clutch Assy Ph124
- Guide Tray Left125
- Hvps/Mcu126
- Electrical Noise127
- Motor Assy Exit128
- Sensor Face up Open129
- Sensor Full Stack129
- Pwba Feeder550130
- Pwba Feeder130
- Sensor no Paper131
- Sensor Low Paper132
- Opt Assy Size133
- Clutch Assy Ph134
- Clutch Pr-Regi135
- Pwba Duplex136
- Motor Duplex136
- Sensor Dup137
- Switch Duplex138
- Pwba Oct139
- Motor Assy Oct139
- Motor Assy Offset140
- Solenoid Assy Gate140
- S/W Rear Cover141
- Sensor Oct142
- Sensor Full Stack (on PWBA OCT)143
- Sensor Offset (on PWBA OCT)143
Picture Image Trouble144
- Overview144
- Too Light Print (Weak Gradation)145
- Blank Print146
- Solid Black147
- White or Light Bands (Parallel with Paper Transport)148
- White or Light Bands (Perpendicular to Paper Transport)149
- Black Stripes (Parallel with Paper Transport)150
- Black Stripes (Perpendicular to Paper Transport)151
- Image Partial Missing (White Spots)153
- Black Spots154
- Ghost Image155
- Fog156
- Skew157
- Damaged Paper (Wrinkling)158
- Bad Fusing159
Chapter 4 Disassembly and Assembly160
Overview161
- Precautions161
- Precautions in Performing Work162
- Disassembly and Reassembly Procedure163
- Difference between EPL-N3000 and Aculaser M4000N in Disassembly/Assembly164
Cover167
- Cover Rear167
- Cover Right168
- Cover Left169
- Cover Top, Control Panel170
- Cover Front172
- Switch I/L Assy173
Paper Cassette175
- Roll Assy Retard175
- Rack Size177
- Gear Sector181
- Guide Assy End 150183
- Plate Assy Btm185
- Gear Lever Lock, Lever Btm Lock188
- Handle Extention 150190
Paper Cassette191
- Roll Assy Retard191
- Rack Size192
- Gear Sector196
- Guide Assy End 550198
- Plate Assy Btm200
- Gear Lever Lock, Lever Btm Lock203
- Handle Extension 550206
- Guide Indicator 3207
- Guide Indicator 2208
- Low Ind Front210
Paper Feeder211
- Feeder Assy211
- Roll Assy Nudger, Roll Assy Feed213
- Clutch Oneway Nudger214
- Roll Assy Gear Nudger215
- Roll Regi Rubber217
- Clutch Assy Ph, Clutch Regi219
- Sensor Regi221
- Sensor no Paper222
- Actuator no Paper223
Paper Feeder224
- Feeder Assy224
- Roll Assy Nudger, Roll Assy Feed226
- Clutch Oneway Nudger227
- Roll Assy Gear Nudger228
- Clutch Assy Ph230
- Sensor no Paper232
- Guide Tray Right234
- Guide Tray Left236
- Actuator no Paper238
Xero239
- Ros Assy239
- Duct Front, Fan Sub241
- Shield Plate Ros243
- Guide Cru Left245
- Interlock S/W 24V, Interlock S/W 5V247
- Lever Guide249
- Harness Assy Fuser251
- Fuser Assy253
- Btr Assy254
- Chute Transfr255
- Pwba Assy Ant256
- Guide Assy Cru R257
- Lever Link, Link Gear 3259
Paper Exit261
- Cover Exit 500261
- Exit Assy262
- Chute up Exit, Chute Low Exit263
- Roll Exit265
- Motor Assy Exit266
- Sensor Face up Open267
- Sensor Full Stack268
- Sensor Full Stack (on PWBA OCT)268
- Actuator Full Stack269
- Cover Rear 500270
- Roll Fu271
  - Lever Gate Fu272
  - Lever Latch Right273
- Roll Pinch Fu, Spring Pinch Fu274
- Gate Fu275
- Gate Assy Exit276
Frame & Drive277
- Motor Cover277
- Main Motor279
- Gear Assy Housing281
- Gear Assy Plate, Gear 9283
Electrical285
- Shield Plate Lvps285
- Pwba Exit Motor286
- Lvps287
- Power Switch, Harness Assy Ac110V289
- Interlock S/W Rear291
- Fan Main293
- Shield Assy Ess294
- Shield Assy Window295
- Shield Plate Hvps296
- Guide Rail Type-B, Spring Type-B297
- Board Assy. Sub298
- Board Assy., Main299
- Hvps/Mcu301
- Board Assy, Memory302
Option 550 Paper Feeder303
- Cover Right Plate304
- Cover Left Plate305
- Opt Assy Size306
- Drive Assy Opt Fdr307
- Motor Feeder308
- Sensor Low Paper309
- Pwba Feeder 550310
- Feeder Option311
- Roll Assy Nudger, Roll Assy Feed313
- Clutch Oneway Nudger314
- Roll Assy Gear Nudger315
- Roll Assy Turn317
- Clutch Assy Ph318
- Clutch Pr-Regi319
- Sensor no Paper320
- Roll Assy Retard321
- Rack Size322
- Gear Sector326
- Guide Assy End 550328
- Plate Assy Btm330
- Gear Lever Lock, Lever Btm Lock333
- Handle Extension 550336
- Guide Indicator 3337
- Guide Indicator 2338
- Low Ind Front340
- Spring Earth Top341
Option Duplex342
- Hsg Upper Assy343
- Hsg Lower Dup344
- Cover Top346
- Pwba Duplex347
- Fan Duplex349
- Sensor Dup350
- Roll Dup351
- Cover Left353
- Cover Right354
- Motor Duplex355
- Switch Duplex357
- Cover Harness, Harness Assy Dup359
Option OCT360
- Cover Rear362
- Tray Assy Oct363
- Cover Oct364
- Cover Front366
- Actuator Full Stack367
- Pwba Oct368
- Motor Assy Offset370
- Solenoid Assy Gate371
- Sensor Oct372
- Roll Oct Lower374
- Roll Oct Upper376
- Motor Assy Oct378
Aculaser M4000N Unique Disassembly Procedures379
- COVER REAR (Aculaser M4000N)379
- COVER TOP, CONTROL PANEL (Aculaser M4000N)380
- FEEDER ASSY (Aculaser M4000N)382
- CLUTCH ASSY PH, CLUTCH REGI (Aculaser M4000N)384
- ROS ASSY (Aculaser M4000N)386
- MAIN MOTOR (Aculaser M4000N)388
- LVPS (Aculaser M4000N)390
- FAN MAIN (Aculaser M4000N)392
- COVER TOP (Aculaser M4000N)393
- COVER REAR DUP (Aculaser M4000N)394
- FAN DUPLEX (Aculaser M4000N)395
Chapter 5 Adjustment396
Adjustment Items397
Adjustment398
- Reset Life Counter398
- Writing USB ID399
Firmware Update401
Chapter 6 Maintenance404
Overview405
- Maintenance406
- Cleaning407
Chapter 7 Appendix408
Connectors409
- Connector P/J Locations of the Printer409
- Connector P/J Locations of the Optional Units411
Wiring Diagrams and Signal Information413
- Notes on Use of Connection Wiring Diagrams413
- Overall Connection Wiring Diagram415
- Wiring and Signal Descriptions between Components418
Control Panel Special Operations428
- Operation Method & Functions428
- Special Menu429
Information Sheet430
- Status Sheet430
- Network Status Sheet (Aculaser M4000N Only)432
- Engine Status Sheet (Aculaser M4000N Only)434
- Print Log Report (Aculaser M4000N Only)436
Exploded Diagrams438
ASP List (Parts List)468

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