Electrical Section - Sharp SF-2314 Service Manual

[12] ELECTRICAL SECTION

1. System block diagram
2 3 6
LM AE PWB MIR.M
LHPS
PERS ONAL
2
COUNTER
OPERATION PWB
2 3 6
HL
AC POWER AC CIRCUIT PWB
POWE R
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
MHP S
MAIN PWB
CPU, MEMORY, DRIVER
1
2
3
DC POWER SUPPLY CIRCUIT
4
5
6
CL
CRU PWB
6
4
DRY HEATER
NO
NO
JAM
3 2 2
MFD1 MFD0 DV UNIT
1 2
+30V
7
3
+32V
+24V
+5V1
+5V2
FW
GND
BIAS
LOWER UNIT PWB
SHV
1 2
MHV
HIGH VLOTAGE PWB
THV
GRID
Warm up complete
Racing complete
NO
Door open
12 – 1
6 2
SPFM
1,2
3 6
SPF PWB
1
MAIN MOTOR
MM
PWB
3 6
1 6
Warm up
• Heater lamp ON
• Mirror initialization
• Lens initialization
Racing
• Toner density control
RPL ON
PSW ON
RPL ON
Copy cycle
Copy end
SPFD 3 6
SPM 7
SPFC 2
SRRC 2
SP PD 3 6
SDSW 3
SPOD 3 6
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