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High-voltage power supply PCB
This power supply generates high-voltage power sources from the 24V source fed from the
low-voltage power supply for charging, developing, and transferring in the laser printing pro-
cess.
High-voltage Power Supply Circuit
24VI
Control 1
(TIDN TAIDEN)
Control 2
(GENZ GENZOU)
Control 3A
(TENH TESHAH)
Control 3B
(TENL TESHAL)
GND
Fuse Type Resistor
0.22
1/6w
Current
Regulator
(250
µ
A)
B1
Q1
B51 Q51
B52 Q56VR53
VR33 VR31 VR34
Voltage
Regulator
(600
±
10V)
(275
±
7V)
Current
Regulator
(-3.0
µ
A)
Voltage
Regulator
(1.8kV)
VR201
Voltage
Regulator
(1.0kV)
Z201
910
GRID
OUT3
OUT2
OUT1
Developer
Roller
Laser-sensitive
Drum
Corona Wire
12
9
10
7
6
11
R1
Transfer Roller
VR101
Voltage
Regulator
(275V)
VR32
Voltage
Regulator
(700V)
VCLN
8
VCLN
DRMBIAS
Cleaner Roller
Grid
Содержание MFC 4550
Страница 5: ...CHAPTER I GENERAL DESCRIPTION ...
Страница 14: ...CHAPTER II INSTALLATION ...
Страница 15: ...CONTENTS 1 INSTALLING THE UPDATE DATA TO THE FACSIMILE EQUIPMENT II 1 ...
Страница 18: ...CHAPTER III THEORY OF OPERATION ...
Страница 49: ...CHAPTER IV DISASSEMBLY REASSEMBLY AND LUBRICATION ...
Страница 81: ...CHAPTER V MAINTENANCE MODE ...
Страница 89: ...V 7 Scanning Compensation Data List 200 dpi ...
Страница 133: ...CHAPTER VI ERROR INDICATION AND TROUBLESHOOTING ...
Страница 163: ...MAIN 8 8 FAX3550 3650 8000P 8200P MFC4550 6550MC 7550MC MFC9000 9500 A ...
Страница 185: ...D CONTROL PANEL 1 2 ...
Страница 187: ...E POWER SUPPLY 120 V Low voltage power supply ...
Страница 188: ...E POWER SUPPLY 200 240 V Low voltage power supply European versions ...
Страница 189: ...E POWER SUPPLY 200 240 V Low voltage power supply Asian versions ...
Страница 190: ...E POWER SUPPLY High voltage power supply ...
Страница 191: ...Sept 98 5X52012 Printed in Japan ...