2.2.5.6.
ADF and RADF SUB PBA ............................................................................. 2 − 34
2.2.5.7.
SCF PBA - Optional ...................................................................................... 2 − 34
2.2.5.8.
CRUM PBA................................................................................................. 2 − 35
2.2.5.9.
Fax Board.................................................................................................... 2 − 36
2.2.5.10. SMPS Board ................................................................................................ 2 − 37
2.2.5.11. HVPS board................................................................................................. 2 − 38
2.2.6.
Engine Firmware Control Algorithm ............................................................................... 2 − 39
2.2.6.1.
Feeding ....................................................................................................... 2 − 39
2.2.6.2.
Transfer....................................................................................................... 2 − 39
2.2.6.3.
Fusing......................................................................................................... 2 − 40
2.2.6.4.
LSU............................................................................................................ 2 − 40
2.2.7.
Software Descriptions .................................................................................................. 2 − 41
2.2.7.1.
Software system overview .............................................................................. 2 − 41
2.2.7.2.
Architecture ................................................................................................. 2 − 41
2.2.7.3.
Data and Control Flow ................................................................................... 2 − 42
3.
Disassembly and Reassembly .............................................................................................................. 3 − 1
3.1.
Precautions when replacing parts ................................................................................................ 3 − 1
3.1.1.
Precautions when assembling and disassembling ............................................................... 3 − 1
3.1.2.
Precautions when handling PBA..................................................................................... 3 − 1
3.1.3.
Releasing Plastic Latches.............................................................................................. 3 − 2
3.2.
Screws used in the printer.......................................................................................................... 3 − 3
3.3.
Replacing the Main SVC parts ................................................................................................... 3 − 5
3.3.1.
Left and Right Cover.................................................................................................... 3 − 5
3.3.2.
Front Cover................................................................................................................ 3 − 6
3.3.3.
ADF or RADF Unit ..................................................................................................... 3 − 7
3.3.4.
OPE Unit ................................................................................................................... 3 − 8
3.3.5.
Platen Unit................................................................................................................. 3 − 9
3.3.6.
Top-Middle Cover ....................................................................................................... 3 − 10
3.3.7.
Fax Board .................................................................................................................. 3 − 11
3.3.8.
Middle and Inner Cover................................................................................................ 3 − 12
3.3.9.
Main Board ................................................................................................................ 3 − 13
3.3.10.
HVPS board ............................................................................................................... 3 − 13
3.3.11.
SMPS Board............................................................................................................... 3 − 14
3.3.12.
Laser Scanning Unit (LSU) ........................................................................................... 3 − 14
3.3.13.
Fuser Unit.................................................................................................................. 3 − 15
3.3.14.
Main Drive Unit.......................................................................................................... 3 − 16
3.3.15.
Feed Drive Unit .......................................................................................................... 3 − 17
3.3.16.
Pick Up_Regi_MP Clutch ............................................................................................. 3 − 17
3.3.17.
Pick-Up Roller............................................................................................................ 3 − 18
3.3.18.
Transfer Roller..................................................
4.2.4.
Other errors................................................................................................................ 4 − 75
5.
System Diagram................................................................................................................................ 5 − 1
5.1.
Block Diagram (M337xFD_M387xFD_M387xFW_M407xFR)........................................................ 5 − 1
5.2.
Block Diagram (M407xFX)....................................................................................................... 5 − 2
5.3.
Connection Diagram (M337xFD_M387xFD_M387xFW_M407xFR) ................................................ 5 − 3
5.4.
Connection Diagram (M407xFX)................................................................................................ 5 − 4
6.
Reference Information........................................................................................................................ 6 − 1
6.1.
Tool for Troubleshooting........................................................................................................... 6 − 1
6.2.
Glossary................................................................................................................................. 6 − 2
6.3.
The Sample Pattern for the Test .................................................................................................. 6 − 8
6.4.
Model Name and Code ............................................................................................................. 6 − 9
6.5.
Revision History..................................................................................................................