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MFC-8440/8840D/8840DN, DCP-8040/8045D/8045DN
SERVICE MANUAL
6-1
CHAPTER 6 TROUBLESHOOTING
1. INTRODUCTION
1.1 Initial
Check
(1) Operating
environment
Check
if:
•
The source voltage stays within ±10% from the rated voltage shown on the rating plate.
•
The machine is installed on a solid, level surface.
•
The room temperature is maintained between 10°C and 32.5°C. The relative humidity
is maintained between 20% and 80%.
•
The machine is not located in a dusty place.
•
The machine is not exposed to ammonia fumes or other harmful gases.
•
The machine is not located in a hot or humid area (such as near water or a humidifier).
•
The machine is not exposed to direct sunlight.
•
The room is well-ventilated.
•
The machine is not placed where the ventilation hole of the machine is blocked.
(2) Print
paper
Check if :
•
A recommended type of print paper is being used. [If the paper is too thick or too thin,
or tends to curl, paper jams or paper feed problems may occur, or printed images may
be blurred.]
•
The print paper is damp. [If so, use fresh paper, and check whether the print quality
improves or not.]
•
The print paper is short-grained paper or acid paper. [If so, print quality problems may
occur.]
For further information on paper, refer to
subsection 2.12 ‘Paper’ in CHAPTER 1
.
(3) Consumable
parts
Check
if:
•
The LCDs on the machine control panel indicate “Toner Empty”. If the LCDs indicate
“Toner Empty”, replace the cartridge with a new one.
For further information on consumable parts, refer to
1. ‘CONSUMABLE PARTS’ in
CHAPTER 5
.
Содержание DCP 8040 - B/W Laser - All-in-One
Страница 272: ...CHAPTER 7 MAINTENANCE MODE 7 6 Fig 7 3 l m a b c d e f g h i j k ...
Страница 343: ...APPENDIX 4 CIRCUIT DIAGRAMS A 50 Appendix 4 1 Main PCB Circuit Diagram 1 7 ...
Страница 344: ...MFC 8440 8840D 8840DN DCP 8040 8045D 8045DN SERVICE MANUAL A 51 Appendix 4 2 Main PCB Circuit Diagram 2 7 ...
Страница 345: ...APPENDIX 4 CIRCUIT DIAGRAMS A 52 Appendix 4 3 Main PCB Circuit Diagram 3 7 ...
Страница 346: ...MFC 8440 8840D 8840DN DCP 8040 8045D 8045DN SERVICE MANUAL A 53 Appendix 4 4 Main PCB Circuit Diagram 4 7 ...
Страница 347: ...APPENDIX 4 CIRCUIT DIAGRAMS A 54 Appendix 4 5 Main PCB Circuit Diagram 5 7 ...
Страница 348: ...MFC 8440 8840D 8840DN DCP 8040 8045D 8045DN SERVICE MANUAL A 55 Appendix 4 6 Main PCB Circuit Diagram 6 7 ...
Страница 349: ...APPENDIX 4 CIRCUIT DIAGRAMS A 56 Appendix 4 7 Main PCB Circuit Diagram 7 7 ...
Страница 350: ...MFC 8440 8840D 8840DN DCP 8040 8045D 8045DN SERVICE MANUAL A 57 Appendix 4 8 Driver PCB Circuit Diagram ...
Страница 351: ...APPENDIX 4 CIRCUIT DIAGRAMS A 58 Appendix 4 9 Engine PCB Circuit Diagram 1 2 ...
Страница 352: ...MFC 8440 8840D 8840DN DCP 8040 8045D 8045DN SERVICE MANUAL A 59 Appendix 4 10 Engine PCB Circuit Diagram 2 2 ...
Страница 353: ...APPENDIX 4 CIRCUIT DIAGRAMS A 60 Appendix 4 11 NCU PCB Circuit Diagram U S A ...
Страница 354: ...MFC 8440 8840D 8840DN DCP 8040 8045D 8045DN SERVICE MANUAL A 61 Appendix 4 12 NCU PCB Circuit Diagram Europe ...
Страница 355: ...APPENDIX 4 CIRCUIT DIAGRAMS A 62 Appendix 4 13 NCU PCB Circuit Diagram Asia ...
Страница 356: ...MFC 8440 8840D 8840DN DCP 8040 8045D 8045DN SERVICE MANUAL A 63 Appendix 4 14 NCU PCB Circuit Diagram Oceania ...
Страница 357: ...APPENDIX 4 CIRCUIT DIAGRAMS A 64 Appendix 4 15 Control Panel PCB Circuit Diagram ...
Страница 359: ...APPENDIX 4 CIRCUIT DIAGRAMS A 66 Appendix 4 17 Low voltage Power Supply PCB Circuit Diagram 100V ...
Страница 361: ...APPENDIX 4 CIRCUIT DIAGRAMS A 68 Appendix 4 19 High voltage Power Supply PCB Circuit Diagram 100V ...
Страница 362: ...April 04 SM FAX027 1 8C5903 Printed in Japan ...