Read Sharp AR-285 (serv.man10) Service Manual online
B. PWB location
No.
Name
Function, operation
1
Operation key PWB L
Key input
2
LCD unit
Operation input, machine
state display
state display
3
Operation key PWB R
Key input
4
Invertor PWB
LCD backlight control
5
Operation control PWB
Operation input, display
control
control
6
Fusing interface PWB
Fusing unit, PCU interface
7
Copy lamp lighting PWB
Copy lamp lighting control
8
CCD PWB
Document image input
9
Copy lamp lighting interface
PWB
PWB
Copy lamp, PCU interface
10
Document size detecting
PWB (Light emitting side)
PWB (Light emitting side)
Document size detection
11
Scanner driver PWB
Optical system scanner unit
drive
drive
12
PCU PWB
Overall control of the copier
and options
and options
13
AC power PWB
AC power input
No.
Name
Function, operation
14
DC power PWB
DC power supply
15
High voltage PWB
Process high voltage, bias
voltage supply
voltage supply
16
Lift-up motor PWB
Paper tray bottom plate lift
up
up
17
Paper transport sensor
PWB
PWB
Paper transport detection
18
ICU PWB
Image process, image data
communication control
communication control
19
Multi feed tray paper size
detection PWB
detection PWB
Document size detection
20
Drum marking sensor PWB
21
Process control PWB
22
Process thermistor PWB
Temperature detection in
the process unit
the process unit
23
Document size detecting
PWB (Light receiving side)
PWB (Light receiving side)
Document size detection
24
Discharge lamp PWB
OPC drum discharge
1
2
3
4
5
7
9
8
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
6
6 – 4
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