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[12] ELECTRICAL SECTION
1. System block diagram
2
3
6
LM
AE PWB
MIR.M
LHPS
PERSONAL
2
COUNTER
OPERATION PWB
2
3
6
HL
AC POWER
AC CIRCUIT PWB
POWER
MAIN SWITCH
UNITS
2. System operation at power ON
Power ON
Initial setting
Memory transfer
Trouble
1
3
6
2
3
6
2
BL PWB
DL PWB
MHPS
MAIN PWB
CPU, MEMORY, DRIVER
1
+32V
2
+24V
3
+5V1
DC POWER SUPPLY CIRCUIT
4
+5V2
5
FW
6
GND
CL
CRU PWB
6
4
NO
NO
JAM
3
2
2
6
MFD1
MFD0
DV UNIT
3
BIAS
LOWER UNIT PWB
SHV
1
2
3
MHV
HIGH VLOTAGE PWB
THV
GRID
Warm up
Warm up complete
Racing
Racing complete
NO
Door open
RPL ON
PSW ON
RPL ON
Copy cycle
Copy end
12 – 1
2
SPFM
1,2
1
MAIN MOTOR
MM
PWB
6
1
6
• Heater lamp ON
• Mirror initialization
• Lens initialization
• Toner density control
TRC
2
VFM
2
6
CFM
2
6
RRC
2
TM
2
PSPS
2
POD
3
6
MPFS
2
MPFC
2
CPFC1
2
PW D
3
PPD
3
CPED1
3
CPED2
2
CSDSW
3
CSPPD
3
CPED2
3
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