Service manual

AR-M351U/M451U, AR-M355U/M455U MAINTENANCE AND DETAILS OF EACH SECTION 7 - 12
DM
8FE-BT-VK-N
DSW-L
DM-T
DM\
5
6
DSW-L
GND1
3
2
1
4
GND1
DMCLK\
(NC)
8
7
PCU PWB
1
2
3
4
5
6
7
8
DM-T
GND2
DM\
CN6
GND2
DSW-F
DSW-F
DMCLK\
9604S-08C
(NC)
1
DVREM\
DHVREM
MHVREM\
THV+PWM\6
4
13
14
12
GND2
3
7
8
9
10
5
GBPWM\
11
CN15
DSW-F
THin
DHVPWM\
THV-PWM\
THVREM\
2
DVPWM\
9604S-14F
GND2
MHV-T
RD
GR
BL
YL
WH
HV
1
DVREM\
DHVREM
MHVREM\
THV+PWM\ 6
4
13
14
12
GND2
3
7
8
9
10
5
GBPWM\
11
DSW-F
THin
DHVPWM\
THV-PWM\
THVREM\
2
DVPWM\
1-84432-4(AMP)
GND2
MHV-T
PS-187
SRA-21T-4L
BIAS
PS-187
PS-187
PS-187
WH
WH
MHV
THV
GB
DHV
DV
RD
PS-187
SRA-21T-3
SRA-21T-4L
RD
SRA-21T-3
2
5
4
3
1
6
3
4
5
Code
Signal
name
Name Function/Operation Type Note
DM DM OPC drum motor Drives the OPC drum and the transfer section. DC brushless motor
THV THV Transfer high voltage High voltage for transfer
DHV DHV High separation voltage High voltage for separation of paper
No. Name Function
1 Transfer roller Transfers toner images from the OPC drum surface to paper.
2 Discharge plate (Separation electrode) Separates paper from the drum.
3 TR bearing (F/R) Transfer roller bearing
4 Transfer roller collar Transfer roller collar
5 After-transfer star ring Guides paper after transfer.
6 TR gear Transfer roller drive gear