Chapter 9
9-3
F-9-2
9.2.1.2
Hegh-Voltage Power Supply Circuit
0006-2994
The high voltage output circuit is built into the DC controller PCB.
The CPU on the DC controller PCB sends instructions for the generation of the following high voltages at specific
timing:
- primary charging roller bias (AC v DC negative voltage)
- developing bias (AC v DC negative voltage)
- transfer charging roller bias (DC positive voltage or DC negative voltage)
Analog
processor
PCB
Laser
scanner unit
Solenoids
Main motor
Control
panel PCB
NCU PCB
*2
ADF unit
*1
ADF motor
ADF sensors
Reader unit
slide detecting
switch
Reader motor
Sensors
P1
NF
Power supply PCB
F2
F1
Low-voltage power
supply circuit
+3.3 V circuit
+ 5 V circuit
+12 V circuit
+24 V circuit
+24V
+12V
+5VS
+5V
+3.3VS
+3.3V
F101
+3.3V
+8V
+3.3V
+5V
+24V
+24V
+24V
+3.3V
+5VS
Modular jack
PCB
*2
Contact sensor
Sensor PCB
+5V
+8V
+24V
+3.3V
+3.3VS
+12V
+5V
+24V
+5V
*1 : Only if equipped with ADF functions.
*2 : Only if equipped with fax functions.
DC controller PCB
•
Cassette paper sensor
•
Paper leading edge
sensor
•
LGL paper sensor
Fan
Manual feed tray
paper sensor
+3.3V
+3.3V
+24V
+24V
Printer controller
PCB
+3.3VS
+5VS
+24V
+5V
+3.3V
Image processor PCB
Toner supply cover
open/close
switch
+24V
Waste toner
full sensor
+3.3V
+3.3V
Sensor relay
PCB
•
Humidity sensor
•
Toner bottle sensor
+3.3V
Delivery Sensor
Summary of Contents for iR1200 Series
Page 1: ...Jun 17 2004 Service Manual iR1200 Series iR1570F ...
Page 2: ......
Page 6: ......
Page 14: ......
Page 15: ...Chapter 1 Introduction ...
Page 16: ......
Page 85: ...Chapter 2 Installation ...
Page 86: ......
Page 88: ......
Page 96: ...Chapter 2 2 8 2 Try sending and receiving an original and check the operation and the images ...
Page 99: ...Chapter 2 2 11 Take full care to avoid severe vibration during the relocation ...
Page 100: ......
Page 101: ...Chapter 3 Basic Operation ...
Page 102: ......
Page 104: ......
Page 116: ......
Page 117: ...Chapter 4 Original Exposure System ...
Page 118: ......
Page 120: ......
Page 130: ......
Page 131: ...Chapter 5 Laser Exposure ...
Page 132: ......
Page 134: ......
Page 140: ......
Page 141: ...Chapter 6 Image Formation ...
Page 142: ......
Page 144: ......
Page 153: ...Chapter 7 Pickup Feeding System ...
Page 154: ......
Page 158: ...Chapter 7 7 2 F 7 1 PS4 PS102 PS103 PS3 PS101 ...
Page 186: ...Chapter 7 7 30 F 7 87 2 1 1 ...
Page 187: ...Chapter 8 Fixing System ...
Page 188: ......
Page 209: ...Chapter 9 External and Controls ...
Page 210: ......
Page 256: ...Chapter 10 Original Feeding System ...
Page 257: ......
Page 265: ...Chapter 10 10 5 F 10 4 PS7 for jam a b or c PS8 for jam d or e PS2 for jam f ...
Page 311: ...Chapter 11 Maintenance and Inspection ...
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Page 314: ......
Page 322: ......
Page 323: ...Chapter 12 Standards and Adjustments ...
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Page 326: ......
Page 336: ......
Page 337: ...Chapter 13 Correcting Faulty Images ...
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Page 340: ......
Page 353: ...Chapter 14 Self Diagnosis ...
Page 354: ......
Page 356: ......
Page 405: ...Chapter 15 Service Mode ...
Page 406: ......
Page 408: ......
Page 487: ...Chapter 16 Service Tools ...
Page 488: ......
Page 489: ...Contents Contents 16 1 List of Special Tools 16 1 16 2 List of Solvents and Oils 16 2 ...
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Page 493: ...Jun 17 2004 ...
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