Main Charger Section - Sharp AR-M550N Service Manual

: Feb. 6 2004
1

[Main charger section]

A. General
The OPC drum surface is negatively charged in this section.
B. Major parts and signal functions
No. Name
1 Screen grid
2 Saw teeth plate
1
C. Maintenance and parts replacement
(1) Maintenance and parts replacement
(Replacement parts)
No. Unit
a Main charger unit
a-2
a-1
PS-187(RD)
MHV
PS-187(YL)
GB
FPS-187(WH)
THV
PS-187(GR)
Bias
Charges the OPC drum evenly. / Charges the OPC drum.
Charges the OPC drum.
Parts
1 Screen grid
2 Saw teeth plate
3 MC cleaner
a
AR-M550/M620/M700 DETAILS OF EACH SECTION 6 - 87
CN-1
B16B-PH-K-S
DSW-F 1
GND2 2
GND2 3
/GBPWM 4
/MHVREM 5
MHV-T 6
HV
/THV+PWM 7
THV+REM 8
/CHV-PWM 9
/CHV-REM 10
/CHVACPWM 11
/CHVACREM 12
/DVPWM 13
/DVREM 14
HVREM 15
+24V1 16
2
1
Operation
a. Main charger unit
1) Remove the front door.
2) Loosen the blue screw.
1
PCU PWB
CN-15
B34B-PHDSS-B
1 DSW-F
2 (NC)
3 GND2
4 GND2
5 /GBPWM
6 /MHVREM
7 MHV-T
8 /THV+PWM
9 THV+REM
10 /CHV-PWM
11 /CHV-REM
12 /CHVACPWM
13 /CHVACREM
14 /DVPWM
15 /DVREM
16 HVREM
17 +24V1
18 (NC)
19 GND2
2
1