B. PWB location
11
1
2
3
4
5
8
6
7
9
10
12
14
15
16
17
18
19
20
23
24
25
26
21
22
illust: AR-280
11
1
2
3
4
5
8
6
7
10
12
14
15
16
17
18
19
20
23
24
25
26
21
22
13
illust: AR-505
No.
Name
Function, operation
1
Operation key PWB L
Key input
2
LCD unit
Operation input, machine
state display
3
Operation key PWB R
Key input
4
Invertor PWB
LCD backlight control
5
Operation control PWB
Operation input, display
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
Copy lamp, PCU interface
10
Document size detecting
PWB (Light emitting side)
Document size detection
11
Interface PWB
Interface between the copy
lamp and the PCU
12
Scanner driver PWB
Optical system scanner unit
drive
13
SCSI interface PWB
Interface between the ICU
and the SCSI cable
No.
Name
Function, operation
14
PCU PWB
Overall control of the copier
and options
15
AC power PWB
AC power input
16
DC power PWB
DC power supply
17
High voltage PWB
Process high voltage, bias
voltage supply
18
Lift-up motor PWB
Paper tray bottom plate lift
up
19
Paper transport sensor PWB
Paper transport detection
20
ICU PWB
Image process, image data
communication control
21
Process thermistor PWB
Temperature detection in
the process unit
22
Drum marking sensor PWB
23
Multi feed tray paper size
detection PWB
Document size detection
24
Process control PWB
25
Document size detecting
PWB (Light receiving side)
Document size detection
26
Discharge lamp PWB
OPC drum discharge
7/13/2000
5 – 4
Содержание AR-250
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