A. Scanner Unit - Sharp MX-M350 Service Manual

8. PWB

A. Scanner unit

No.
1 SPF control PWB
2 Original size detection PWB (Light emitting side)
3 CCD PWB (in lens unit) (The lens unit cannot be disassembled.)
4 SPF original width detection volume PWB
5 MFP operation PWB
6 Scanner control PWB
7 LVDS PWB
8 Original size sensor (Light receiving side)
9 CIS unit (in CIS unit) (The CIS unit cannot be disassembled.)
10 CIS interface PWB (in CIS unit) (The CIS unit cannot be disassembled.) CIS signal AD conversion process
11 Scanner interface PWB
12 CIS control PWB
13 CL inverter PWB
14 LCD INV PWB
B. Engine
No.
1 PRT controller
2 PCU PWB
3 Power supply unit
4 LD PWB (Inside LSU)
5 Mother PWB
6 Reactor PWB (200V only) / Filter PWB (Taiwan only)
7 BD PWB
8 High voltage resistor PWB
9 Cassette detection PWB
10 Drawer PWB
11 High voltage PWB
12 Fuse PWB
13 Relay PWB
MX-M350/M450 N/U EXTERNAL VIEWS AND INTERNAL STRUCTURES 5 - 9
2
1
6
12
11
10
9
Name
1
2
7
11
8
10
9
12
Name
3
13
4
5
8
7 14
SPF control
Original size detection when using the table glass
Image scan (Table glass/SPF surface)
SPF original width detection
Panel operation control
Scanner unit control
LCD signal relay
Original size detection when using the table glass
Image scan (SPF back surface)
Scanner unit and connection of scanner control PWB
CIS unit control and image process
Inverter for copy lamp
Generates a high voltage for the backlight.
13
3
Function/Operation
Image process, image data communication control
Overall control of the machine and options
DC power supply
Laser ON control (Inside LSU: LSU cannot be disassembled.)
Signal interface between PCU and the controller
Noise filter
Laser control (Inside LSU: LSU cannot be disassembled.)
High voltage load adjustment
Paper cassette control
Fan control
High voltage power supply
Protection of the machine when an abnormal power is supplied.
HDD back up
Function/Operation
4
5
6