DOWNLOAD Sharp AR-M550 (serv.man12) Service Manual ↓ Size: 13.91 MB | Pages: 71 in PDF or view online for FREE

Model
AR-M550 (serv.man12)
Pages
71
Size
13.91 MB
Type
PDF
Document
Service Manual
Brand
Device
Copying Equipment / (6b) Laser scan unit, Image process section, Scanner section, Fusing section, SPF section
File
ar-m550-sm12.pdf
Date
PREV: Sharp AR-M550 (serv.man11) Service Manual

Sharp AR-M550 (serv.man12) Service Manual ▷ View online

AR-M550/M620  DETAILS OF EACH SECTION  6 - 85
a. Transfer unit
1) Open the left door unit.
2) Loosen the blue screw and open the holder to remove the transfer
unit.
a-1. Transfer drive gear
1) Remove the transfer unit. (See “a. Transfer unit” in this section)
2) Loosen the blue screw and unhook the hook lever in order to open
the transfer belt unit in the arrowed direction.
3) Remove the spring.
4) Remove the transfer belt unit in the arrowed direction.
5) Remove the transfer belt unit. (See “a-1. Transfer drive gear” in
this section)
6) Remove the ground members.
7) Remove the blue screw to remove the roller fixing members.
8) Pull out the upper transfer roller unit from the transfer belt.
9) Remove the E-ring and screw to remove the transfer drum gear.
2
1
AR-M550/M620  DETAILS OF EACH SECTION  6 - 86
a-2. Transfer belt
1) Remove the transfer unit. (See “a. Transfer unit” in this section)
2) Remove the transfer belt unit. (See “a-1. Transfer drive gear” in
this section)
3) Remove the upper transfer roller unit.
4) Pull out the transfer belt.
a-3. Transfer auxiliary roller
a-4. Transfer roller
a-5. Transfer roller collar
1) Remove the transfer unit. (See “a. Transfer unit” in this section)
2) Remove the transfer belt unit. (See “a-1. Transfer drive gear” in
this section)
3) Remove the upper transfer roller unit.
4) Remove the transfer belt. (See “a-2. Transfer belt” in this section)
5) Remove the transfer tension roller bearing to remove the transfer
roller DRG.
6) Remove the E-ring to remove the transfer roller collar.
7) Remove the E-ring to remove the transfer roller transfer roller col-
lar.
a-6. Transfer cleaning roller
1) Remove the transfer unit. (See “a. Transfer unit” in this section)
2) Remove the transfer belt unit. (See “a-1. Transfer drive gear” in
this section)
3) Remove the holder to remove the transfer cleaning roller.
a-7. Transfer cleaning brush
1) Remove the transfer unit. (See “a. Transfer unit” in this section)
2) Remove the transfer belt unit. (See “a-1. Transfer drive gear” in
this section)
3) Remove the upper transfer roller unit.
4) Remove the transfer belt. (See “a-2. Transfer belt” in this section)
5) Remove the cleaning brush.
AR-M550/M620  DETAILS OF EACH SECTION  6 - 87
[Main charger section]
A. General
The OPC drum surface is negatively charged in this section.
B. Major parts and signal functions
C. Maintenance and parts replacement 
(1) Maintenance and parts replacement
(Replacement parts)
a. Main charger unit
1) Remove the front door. 
2) Remove the process cover.
3) Loosen the screw.
No.
Name
Operation
1
Screen grid
Charges the OPC drum evenly. / Charges the OPC drum.
2
Saw teeth charging plate
Charges the OPC drum.
1
1
2
2
14
13
12
11
10
1
9
8
7
6
5
4
3
2
19
18
17
16
15
12
11
10
9
8
7
6
5
4
3
2
1
13
14
15
16
PCU PWB
MHV
THV
GB
PS-187(RD)
PS-187(YL)
Bias
PS-187(GR)
HV
CN-15
GND2
GND2
/GBPWM
/MHVREM
MHV-T
/THV+PWM
/CHV-PWM
/CHV-REM
/CHVACPWM
/CHVACREM
/DVPWM
/DVREM
HVREM
CN-1
B16B-PH-K-S
(NC)
GND2
GND2
/GBPWM
/MHVREM
MHV-T
/THV+PWM
/CHV-PWM
/CHV-REM
/CHVACPWM
/CHVACREM
/DVPWM
/DVREM
HVREM
+24V1
DSW-F
DSW-F
+24V1
(NC)
THV+REM
THV+REM
GND2
B34B-PHDSS-B
FPS-187(WH)
No.
Unit
Parts
a
Main charger unit
1
Screen grid
2
Saw teeth plate
3
MC cleaner
a-1
a
a-2
AR-M550/M620  DETAILS OF EACH SECTION  6 - 88
4) Remove the main charger unit.
a-1. Screen grid
1) Loosen the blue screw.
2) Remove the screen grid from the claw.
a-2. Saw teeth plate
1) Remove the blue screw.
2) Lifting one end up, slide off the saw blade holder.
a-3. MC cleaner
1) Remove the screen grid. (See “a-1. Screen grid” in this section)
2) Remove the saw teeth plate.(See “a-2. Saw teeth plate” in this sec-
tion)
3) Remove the MC cleaner.
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