
Table of Contents
15
Specifications Table .............................. 17
1.1. Copy Function.........................................17
1.2. Fax, Printer and Internet Fax
Functions ................................................28
1.3. System Combination
for DP-C405 Series.................................39
1.4. Options and Supplies
for DP-C405 Series.................................40
1.5. Options and Supplies
for DP-C354/C322 Series .......................43
1.6. External View..........................................48
1.7. Control Panel ..........................................52
1.8. Fans........................................................53
1.9. Motors.....................................................53
1.10. Sensors...................................................54
1.11. Clutches and Switches ...........................56
1.12. PC Board ................................................56
Disassembly Instructions ..................... 57
2.1. General Disassembly..............................57
2.2. Disassembly Instructions ........................58
2.3. Hardware Identification Template .........179
Maintenance, Adjustments and
Check Points ........................................ 183
3.1. Preventive Maintenance .......................183
3.2. Required Tools .....................................185
3.3. Preventive Maintenance Points ............186
3.4. Preventive Maintenance Check List .....187
3.5. Resetting the P/M
(Preventive Maintenance) Counter .......190
3.6. Lubrication Point ...................................192
3.7. Easy Maintenance (DP-C405 Series)...192
3.8. Counter / Parameter Auto Backup........206
3.9. Counter / Parameter Backup to
SD Card in the Front Slot......................207
3.10. Power on Display Change (F9-19) .......208
3.11. Updating the Firmware
(DP-C405 Series) .................................209
3.12. Adjusting Copy Quality .........................218
3.13. Adjusting the Printer Registration,
LSU Image Side to Side,
Color Registration .................................222
3.14. Calibrating the LCD ..............................224
3.15. LEDs on the EC PCB............................224
3.16. Adjusting Scanner Skew ......................225
3.17. LSU Replacement and Color Skew
Adjustment Instructions ........................226
3.18. IT Belt Replacement ............................ 228
3.19. IT Belt “Cleaning Unit” Replacement ... 229
3.20. 720K PM Kit
(DQ-M35S72 / DQ-M32N72)................ 232
3.21. Signal Waveform.................................. 259
3.22. SC PC Board........................................ 279
3.23. EC PC Board........................................ 287
3.24. ADF PC Board ..................................... 342
3.25. SCN PC Board ..................................... 359
3.26. AFE PC Board...................................... 365
3.27. ADU PC Board ..................................... 378
3.28. MOTDRV PC Board ............................. 386
3.29. PNL1 PC Board.................................... 388
3.30. NFL PC Board...................................... 397
3.31. LVPS .................................................... 399
3.32. Optional LVPS...................................... 402
3.33. CST PC Board ..................................... 403
3.34. TRU PC Board ..................................... 411
3.35. RLB PC Board...................................... 413
Troubleshooting .................................. 415
4.1. Initial Troubleshooting Flowchart ......... 415
4.2. Improper LCD Display.......................... 416
4.3. Printed Copy Quality Problems ............ 417
4.4. Troubleshooting the LAN Interface ...... 438
4.5. Error Codes (For Copier) ..................... 446
4.6. Information Codes Table
(For Facsimile) ..................................... 477
4.7. Diagnostic Codes (For Facsimile) ........ 483
4.8. Troubleshooting (For Printer) ............... 490
Service Modes ..................................... 492
5.1. Service Modes (For Copier) ................. 492
5.2. Service Modes (For Facsimile) ............ 561
System Description ............................. 594
6.1. Mechanical Operation .......................... 594
6.2. Inverting Automatic Document Feeder
(i-ADF).................................................. 596
6.3. Printer Mechanism ............................... 598
6.4. Printing Process ................................... 604
Installation (For PU) ............................ 612
7.1. Precautions During Set Up................... 612
7.2. Unpacking ............................................ 614
7.3. Installation Procedure .......................... 616
7.4. Setting .................................................. 621