4-31
4.1.15 Low-voltage Power Supply PCB
(1) Remove screw "a" and take off the low-voltage insulator sheet.
(2) Remove screws "b" and "c" from the low-voltage power supply PCB and grounding wire,
respectively.
(3) Remove screw "d" and lift up the power inlet support.
For the new type of the power inlet support having an opening: You need to cut off the binder
that fastens the blue and brown lead wires of the AC power cord to the power inlet support.
(4) Slightly lift up the low-voltage power supply PCB and disconnect the low-voltage power
harness and heater harness (of the blue and brown wires).
Low-voltage insulator sheet
Low-voltage power supply PCB
Low-voltage power harness
"f"
Openings provided in the
power supply shield
"g"
Opening provided in the
power supply shield
Main cover
(placed upside down)
"e"
U-shaped cutout
Heater harness
Grounding wire
"a"
"b"
"c"
"d"
Power inlet support
(Opening provided in the
new type of the power
inlet support)
"a," "b," and "d": Taptite, cup S M3x6
"c": Screw, pan (washer) M4x8DB
Reassembling Notes
• Be sure to route the heater harness through U-shaped cutout "e" provided in the power supply
shield. Then, route the AC power cable through the same cutout "e" on the heater harness.
(Refer to Subsection 4.1.26, "Harness routing H."
• Fit the front tabs of the low-voltage power supply PCB in openings "f."
• Fit the front tab of the insulator sheet in opening "g."
Содержание Laser MFC-4800
Страница 1: ...FACSIMILE EQUIPMENT SERVICE MANUAL MODEL FAX2800 FAX2900 FAX3800 MFC4800 FAX8070P MFC9030 MFC9070 ...
Страница 5: ...CHAPTER 1 GENERAL DESCRIPTION ...
Страница 16: ...CHAPTER 2 INSTALLATION ...
Страница 21: ...CHAPTER 3 THEORY OF OPERATION ...
Страница 23: ...3 1 3 1 OVERVIEW ...
Страница 26: ...3 4 3 2 2 Laser Printing Mechanism 3 2 2 1 Paper pulling in registration feeding and ejecting mechanism ...
Страница 31: ...3 9 Location of Sensors and Actuators ...
Страница 33: ...CHAPTER 4 DISASSEMBLY REASSEMBLY AND LUBRICATION ...
Страница 39: ...4 4 Disassembly Order Flow ...
Страница 44: ...4 9 6 Turn the ASF upside down then remove the registration sensor actuator ...
Страница 82: ...4 45 Harness routing G Laser diode harness polygon motor flat cable and toner sensor harness on the laser unit ...
Страница 86: ...4 48 2 Scanner drive unit 3 Separation roller ...
Страница 87: ...4 49 4 Document feed roller ...
Страница 88: ...CHAPTER 5 MAINTENANCE MODE ...
Страница 95: ...5 6 Scanning Compensation Data List a b c d e ...
Страница 102: ...5 13 Key Button Entry Order ...
Страница 110: ...CHAPTER 6 ERROR INDICATION AND TROUBLESHOOTING ...
Страница 140: ...FAX2800 FAX2900 FAX3800 MFC4800 FAX8070P MFC9030 MFC9070 Appendix 1 EEPROM Customizing Codes ...
Страница 143: ...FAX2800 FAX2900 FAX3800 MFC4800 FAX8070P MFC9030 MFC9070 Appendix 2 Firmware Switches WSW ...
Страница 190: ...A Main PCB 1 5 ...
Страница 191: ...A Main PCB 2 5 ...
Страница 192: ...A Main PCB 3 5 ...
Страница 193: ...A Main PCB 4 5 ...
Страница 194: ...A Main PCB 5 5 ...
Страница 195: ...B NCU PCB U S A Canada ...
Страница 196: ...B NCU PCB U K Norway Netherlands Finland Denmark Sweden ...
Страница 197: ...B NCU PCB Germany France Belgium Switzerland Ireland Austria Spain Italy South Africa ...
Страница 198: ...B NCU PCB Asia Oceania 1 2 ...
Страница 200: ...C Control Panel PCB ...
Страница 201: ...D Power Supply PCB 100 120V Low voltage power supply ...
Страница 202: ...D Power Supply PCB 200 240V Low voltage power supply Europe ...
Страница 203: ...D Power Supply PCB 200 240V Low voltage power supply Asia Oceania ...
Страница 204: ...D Power Supply PCB High voltage power supply ...
Страница 205: ...April 02 SM FAX002 8X5601 Printed in Japan ...