Pwb Unit; Section - Sharp AR-5127 Service Manual

No. Name
19 Door switch
20 2nd right door switch
21 2nd cassette paper
pass sensor
22 2nd cassette paper
upper limit detection
sensor
23 2nd cassette paper
empty sensor
24 1st cassette paper
upper limit detection
sensor
25 1st cassette paper
empty sensor
26 Center tray paper
YES/NO sensor
27 1st cassette paper
pass sensor

6. PWB unit

1
11
10
9
8
No. Name
1 Inverter PWB
2 CCD PWB
3 Option connector PWB
4 MCU PWB
5 Tray interface PWB
6 KEY/LED PWB (right side) For the copy operation
7 LCD back light PWB
8 KEY/LED PWB (left side)
9 Power source PWB
Function and
Code
operation
SW24V Front door and side
door open/close
detection
DRS1A Side door open/close
detection
PPD1A 2nd cassette paper
pass
LUD1A 2nd cassette paper
upper limit detection
PAP1A 2nd cassette paper
empty detection
LUD1H 1st cassette paper
upper limit detection
PAP1H 1st cassette paper
empty detection
TRAYPAPER Center tray paper
YES/NO detection
PIN 1st cassette paper
pass
2
3
7
Function and operation
Copy lamp control
For image scanning (read)
Main unit control
2nd tray control
LCD control
For the FAX operation
AC power input/DC voltage
control
AR-5127 EXTERNAL VIEW AND INTERNAL STRUCTURE 6 - 4

7. Section

1 2
23
No. Name
1 Copy lamp
2 Copy lamp unit
3 LSU unit
4 Lens unit
4
5 MC holder unit
6 Paper exit roller
7 Transport roller
8 Upper heat roller
5
9 Lower heat roller
10 Drum unit
6
11 DUP transport follower
roller
12 DUP transport roller
13 Transport roller
14 Resist roller
15 Manual feed tray
16 Manual paper feed roller
17 Manual feed transport
roller
18 1st cassette pick-up
roller
19 1st cassette paper feed
roller
20 2nd cassette pick-up
roller
21 2nd cassette paper feed
roller
22 MG roller
23 2nd/3rd mirror unit
3 4 5
22 21 20
Function and operation
Image radiation lamp
Operates in synchronization with
2nd/3rd mirror unit to radiate
documents sequentially.
Converts image signals into laser
beams to write on the dum.
Reads images with the lens and
the CCD.
Supplies negative charges evenly
on the drum.
Paper exit roller
Paper transport roller
Fuses toner on paper.
(with the teflon roller)
Fuses toner on paper.
(with the silicone rubber roller)
Forms images.
Duplex paper transport
Duplex paper transport
Transfer images on the drum onto
paper.
Synchronize the paper lead edge
with the image lead edge.
Manual feed paper tray
Picks up papers in manual paper
feed port.
Transports paper from the manual
paper feed port.
Picks up paper from the cassette.
Transports the picked up paper to
RESIST section.
Picks up paper from the cassette.
Transports the picked up paper to
RESIST section.
Puts toner on the OPC drum.
Reflects the images from the copy
lamp unit to the lens unit.
6
7
8
9
10
11
12
13
14
16
15
17
18
19