AR-M256/M257/M258/M316/M317/M318/5625/5631 EXTERNAL VIEW AND INTERNAL STRUCTURE 6 - 6
G. PWB unit
H. Section
21
2nd cassette paper
pass sensor
PFD2
2nd cassette paper pass
22
2nd cassette paper
upper limit detection
sensor
LUD2
2nd cassette paper upper
limit detection
23
2nd cassette paper
empty sensor
PED2
2nd cassette paper empty
detection
24
1st cassette paper
pass sensor
PPD1H
1st cassette paper pass
25
1st cassette paper
upper limit detection
sensor
LUD1
1st cassette paper upper
limit detection
26
1st cassette paper
empty sensor
PED1
1st cassette paper empty
detection
27
Toner sensor
Toner density detection
28
Center tray paper
YES/NO sensor
LOEMP Center tray paper YES/NO
detection
29
Main switch
PSSW
Main power switch
30
Original size sensor
DSIN0
Document size detection
(Inch series: PD1, 2)
(AB series: PD1 – 3)
31
Reverse pass paper
detection sensor
DUP2
Reverse pass detection
No.
Name
Function and operation
1
Inverter PWB
Copy lamp control
2
CCD PWB
For image scanning (read)
3
Option connector PWB
4
IMC PWB
Image process
5
MCU PWB
Main unit control
6
Mother board
Connection with FAX PWB and
PCL PWB
7
Tray interface PWB
2nd tray control
8
DC power supply PWB
DC voltage control
9
High voltage PWB
High voltage control
10
KEY PWB
11
OPU PWB
Operation panel control
No.
Name
Code
Function and operation
1
2
3
4
5
6
7
8
9
10
11
No.
Name
Function and operation
1
Copy lamp
Image radiation lamp
2
Copy lamp unit
Operates in synchronization with
2nd/3rd mirror unit to radiate
documents sequentially.
3
LSU unit
Converts image signals into laser
beams to write on the dum.
4
Lens unit
Reads images with the lens and
the CCD.
5
MC holder unit
Supplies negative charges evenly
on the drum.
6
Paper exit roller
Paper exit roller
7
Transport roller
Paper transport roller
8
Upper heat roller
Fuses toner on paper.
(with the Teflon roller)
9
Lower heat roller
Fuses toner on paper.
(with the silicone rubber roller)
10
Drum unit
Forms images.
11
DUP transport follower
roller
Duplex paper transport
12
DUP transport roller
Duplex paper transport
13
Transport roller
Transfer images on the drum onto
paper.
14
Resist roller
Synchronize the paper lead edge
with the image lead edge.
15
Manual feed tray
Manual feed paper tray
16
Manual paper feed roller
Picks up papers in manual paper
feed port.
17
Manual feed transport
roller
Transports paper from the manual
paper feed port.
18
1st cassette pick-up roller
Picks up paper from the cassette.
19
1st cassette paper feed
roller
Transports the picked up paper to
RESIST section.
20
2nd cassette pick-up
roller
Picks up paper from the cassette.
21
2nd cassette paper feed
roller
Transports the picked up paper to
RESIST section.
22
MG roller
Puts toner on the OPC drum.
23
2nd/3rd mirror unit
Reflects the images from the copy
lamp unit to the lens unit.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
16
17
18
19
15
20
21
22
23