iii
CHAPTER IV
MAINTENANCE AND TROUBLESHOOTING
.........................
IV-1
1. INTRODUCTION
..............................................................................................................
IV-1
1.1
Initial Check
............................................................................................................................
IV-1
1.2
Basic Procedure
.....................................................................................................................
IV-2
2.
MTBF / MTTR
..................................................................................................................
IV-2
3.
CONSUMABLE PARTS
...................................................................................................
IV-3
3.1
Drum Unit
................................................................................................................................
IV-3
3.2
Toner Cartridge
.......................................................................................................................
IV-3
3.3
Periodical Replacement Parts
.................................................................................................
IV-3
4.
IMAGE DEFECTS
............................................................................................................
IV-4
4.1
Image Defect Examples
..........................................................................................................
IV-4
4.2
Troubleshooting Image Defects
..............................................................................................
IV-5
4.3
Location of High-voltage Contacts and Grounding Contacts
................................................
IV-22
4.4
Location of Feed Roller Shaft and Grounding Contacts
.......................................................
IV-23
5.
DOCUMENT FEEDING PROBLEMS
.............................................................................
IV-24
6.
PAPER JAM
...................................................................................................................
IV-26
7.
TROUBLESHOOTING MALFUNCTIONS
......................................................................
IV-27
8.
PRINTER INSPECTION MODE
.....................................................................................
IV-32
8.1
Incorporated Inspection Modes
............................................................................................
IV-32
8.2
Error Codes
..........................................................................................................................
IV-34
9.
SCANNER INSPECTION MODE
...................................................................................
IV-35
9.1
Test Mode A
..........................................................................................................................
IV-35
9.2
Test Mode B
..........................................................................................................................
IV-37
9.3
Scanner Error Indications
.....................................................................................................
IV-38
9.4
Scanner Service Error
..........................................................................................................
IV-40
APPENDICES
1.
SERIAL NO. DESCRIPTIONS
..........................................................................................
A-1
2.
HOW TO KNOW DRUM UNIT LIFE & PAGE COUNTER
................................................
A-2
3.
DIAMETER / CIRCUMFERENCE OF ROLLERS
..............................................................
A-4
4.
CONNECTION DIAGRAM
.................................................................................................
A-5
5.
MAIN PCB CIRCUIT DIAGRAM, (1/3)
...............................................................................
A-6
6.
MAIN PCB CIRCUIT DIAGRAM, (2/3)
...............................................................................
A-7
7.
MAIN PCB CIRCUIT DIAGRAM, (3/3)
...............................................................................
A-8
8.
PANEL SENSOR PCB CIRCUIT DIAGRAM
.....................................................................
A-9
9.
SCANNER PANEL PCB CIRCUIT DIAGRAM
.................................................................
A-10
10. SCANNER SENSOR PCB CIRCUIT DIAGRAM
..............................................................
A-11
11. LOW-VOLTAGE POWER SUPPLY PCB CIRCUIT DIAGRAM, (110 - 120V)
..................
A-12
12. LOW-VOLTAGE POWER SUPPLY PCB CIRCUIT DIAGRAM, (220 - 240V)
..................
A-13
13. HIGH-VOLTAGE POWER SUPPLY PCB CIRCUIT DIAGRAM
.......................................
A-14