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CHAPTER IVMAINTENANCE AND TROUBLESHOOTING..........................IV-1
1.INTRODUCTION..............................................................................................................IV-1
1.1 Initial Check.............................................................................................................................IV-1
1.2 Basic Procedure......................................................................................................................IV-2
2.CONSUMABLE PARTS...................................................................................................IV-2
2.1 Drum Unit.................................................................................................................................IV-2
2.2 Toner Cartridge........................................................................................................................IV-2
2.3 Periodical Replacement Parts.................................................................................................IV-3
3.IMAGE DEFECTS............................................................................................................IV-4
3.1 Image Defect Examples...........................................................................................................IV-4
3.2 Troubleshooting Image Defects...............................................................................................IV-5
3.3 Location of High-voltage Contacts and Grounding Contacts.................................................IV-19
3.4 Location of Feed Roller Shaft and Grounding Contacts........................................................IV-20
4.PAPER JAM...................................................................................................................IV-21
5.TROUBLESHOOTING MALFUNCTIONS......................................................................IV-22
6.INSPECTION MODE......................................................................................................IV-27
6.1 Incorporated Inspection Modes.............................................................................................IV-27
6.2 Error Codes...........................................................................................................................IV-29
APPENDICES
1.Serial No. Descriptions......................................................................................................V-1
2.Connection Diagram..........................................................................................................V-2
3.Main PCB Circuit Diagram, (1/4).......................................................................................V-3
4.Main PCB Circuit Diagram, (2/4).......................................................................................V-4
5.Main PCB Circuit Diagram, (3/4).......................................................................................V-5
6.Main PCB Circuit Diagram, (4/4).......................................................................................V-6
7.Driver PCB Circuit Diagram...............................................................................................V-7
8.Switch Panel/Solenoid, Bin/Relay PCB Circuit Diagram ...................................................V-8
9.Low-voltage Power Supply PCB Circuit Diagram (110 - 240V)..........................................V-9
10.Low-voltage Power Supply PCB Circuit Diagram (220 - 240V)........................................V-10
11.High-voltage Power Supply PCB Circuit Diagram............................................................V-11
12.SR PCB Circuit Diagram.................................................................................................V-12