Read Sharp AR-M351U / AR-M451U (serv.man8) Service Manual online
AR-M351U/M451U, AR-M355U/M455U EXTERNAL VIEWS AND INTERNAL STRUCTURES 5 - 7
7. PWB
A. Scanner unit
B. Engine
No.
Name
Function/Operation
1
SPF control PWB
SPF control
2
Original size detection PWB (Light emitting side)
Original size detection when using the table glass
3
CCD PWB (in lens unit) (The lens unit cannot be disassembled.)
Image scan (Table glass/SPF surface)
4
SPF original width detection volume PWB
SPF original width detection
5
MFP operation PWB
Panel operation control
6
Scanner control PWB
Scanner unit control
7
LVDS PWB
LCD signal relay
8
Original size sensor (Light receiving side)
Original size detection when using the table glass
9
CIS unit (in CIS unit) (The CIS unit cannot be disassembled.)
Image scan (SPF back surface)
10
CIS interface PWB (in CIS unit) (The CIS unit cannot be disassembled.)
CIS signal AD conversion process
11
Scanner interface PWB
Scanner unit and connection of scanner control PWB
12
CIS control PWB
CIS unit control and image process
13
CL inverter PWB
Inverter for copy lamp
No.
Name
Function/Operation
1
PRT controller
Image process, image data communication control
2
PCU PWB
Overall control of the machine and options
3
Power supply unit
DC power supply
4
LD PWB (Inside LSU)
Laser ON control (Inside LSU: LSU cannot be disassembled.)
5
Mother PWB
Signal interface between PCU and the controller
6
Reactor PWB (200V only) / Filter PWB (Taiwan only)
Noise filter
7
BD PWB
Laser control (Inside LSU: LSU cannot be disassembled.)
8
High voltage resistor PWB
High voltage load adjustment
9
Cassette detection PWB
Paper cassette control
10
Drawer PWB
Fan control
11
High voltage PWB
High voltage power supply
12
Fuse PWB
Protection of the machine when an abnormal power is supplied.
13
Relay PWB
HDD back up
1
6
2
3
4
5
7
8
9
10
11
12
13
1
2
7
11
8
10
9
12
3
6
4
5
13
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