UF-7000, UF-8000, UF-7100, UF-8100 (serv.man2) - Panasonic Fax Service Manual (repair manual). Page 4

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Table of Contents
4
System Description ................................. 5
1.1.
System Block Diagram .............................5
Electrical Circuit Explanation ................. 7
2.1.
SC PC Board (System Control 
Printed Circuit Board) ...............................7
2.2.
Engine Control PC Board .........................9
2.3.
PNL PC Board Block Diagram 
(Panel PCBs)  .........................................22
2.4.
Shutdown / Sleep Mode .........................23
2.5.
Option PC Board.....................................23
Signal Waveform.................................... 24
3.1.
Glossary of Electrical 
Abbreviations ..........................................24
3.2.
SC PC Board ..........................................29
3.3.
SDR PC Board........................................41
3.4.
Engine Control PC Board .......................47
3.5.
PNL1 PC Board ......................................56
3.6.
PNL2 PC Board ......................................61
3.7.
PNL3 PC Board ......................................61
3.8.
FXB PC Board ........................................62
3.9.
G3B PC Board ........................................62
3.10. Registration/Paper Detect 
Sensor PC Board....................................62
3.11. Paper Exit/ADU Paper Jam 
Sensor PC Board....................................62
3.12. No Paper Sensor PC Board....................62
3.13. Low Toner Sensor PC Board..................62
3.14. 2nd Paper Feed Module I/F 
PC Board ................................................63
3.15. HVPS ......................................................64
3.16. LVPS.......................................................64
3.17. 2nd Feeder PC Board.............................65
Schematic Diagram ............................... 67
4.1.
General Circuit Diagram .........................67
4.2.
SC PC Board ..........................................68
4.3.
Engine Control PC Board .......................83
4.4.
SDR PC Board........................................86
4.5.
FXB PC Board (For **) * .........................90
4.6.
FXB PC Board (For **R) *.......................94
4.7.
G3B PC Board (For **) * .........................98
4.8.
G3B PC Board (For **R) * ....................106
4.9.
Registration/Paper Detect Sensor 
PC Board, Paper Exit/ADU Paper 
Jam Sensor PC Board, Low Toner 
Sensor PC Board, No Paper 
Sensor PC Board ................................. 114
4.10. 2nd Paper Feed Module I/F 
PC Board.............................................. 115
4.11. 2nd Feeder PC Board .......................... 116
Electrical Circuit Diagram & 
Parts List 
.............................................. 117
5.1.
Destination Codes................................ 117
5.2.
SC PC Board (For **) [RTL/PbF].......... 118
5.3.
SC PC Board (For **R) [RTL/PbF] ....... 139
5.4.
Engine Control PC Board 
(For **) [RTL/PbF] ................................ 160
5.5.
Engine Control PC Board 
(For **R) [RTL/PbF].............................. 175
5.6.
SDR PC Board [RTL/PbF].................... 183
5.7.
FXB PC Board (For **) 
[RTL/PbF]............................................. 189
5.8.
FXB PC Board (For **R) 
[RTL/PbF]............................................. 196
5.9.
G3B PC Board (For **) 
[RTL/PbF]............................................. 203
5.10. G3B PC Board (For **R) 
[RTL/PbF]............................................. 212
5.11. Registration/Paper Detect Sensor 
PC Board [RTL/PbF] ............................ 221
5.12. Paper Exit/ADU Paper Jam Sensor 
PC Board [RTL/PbF] ............................ 221
5.13. No Paper Sensor PC Board 
[RTL/PbF]............................................. 221
5.14. Low Toner Sensor PC Board 
[RTL/PbF]............................................. 221
5.15. 2nd Paper Feed Module I/F 
PC Board (For **) [RTL/PbF]................ 222
5.16. 2nd Paper Feed Module I/F 
PC Board (For **R) [RTL/PbF] ............. 225
5.17. 2nd Feeder PC Board 
[RTL/PbF]............................................. 227
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