Brother MFC-P2000 - B/W Laser Printer Service Manual page 6

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
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