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