DOWNLOAD Sharp AL-840 (serv.man8) Service Manual ↓ Size: 3.02 MB | Pages: 32 in PDF or view online for FREE

Model
AL-840 (serv.man8)
Pages
32
Size
3.02 MB
Type
PDF
Document
Service Manual
Brand
Device
Copying Equipment / AL800 840 Service Manual-Disassembly
File
al-840-sm8.pdf
Date
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S006
Image process section
Section
Unit
Part
JOB
CODE
After-work
NOTE
S No.
Part name
Ua No.
Unit name
Ub No.
Unit name
P No.
Part name
JOB No.
S 006
Image process
P 001
Toner cartridge
ASS
P 002
Photoconductor cartridge
ASS
P 003
Developing bias electrode
ASS
CLN
P 004
Photoconductor earth electrode
ASS
CLN
P 005
Transfer roller
ASS
CLN
P 006
Transfer charger electrode
ASS
CLN
P 007
Developing bias electrode
spring
ASS
CLN
P 008
Separation electrode
ASS
CLN
P 009
Main charger electrode SP
ASS
CLN
P 010
Earth electrode SP
ASS
CLN
S006/P007/CLN
S006/P010/CLN
S006/P009/CLN
S006/P006/CLN
S006/P005/CLN
S006/P008/CLN
S006/P004/CLN
S006/P003/CLN
9 – 21
 S006/P001 
Toner cartridge
 S006/P002 
Photoconductor cartridge
(1)
Open the operation unit. 
(2)
Remove the toner cartridge (S006/P001).
(3)
Remove the photoconductor cartridge (S006/P002).
 S006/P003 
Developing bias electrode
 S006/P004 
Photoconductor earth electrode
 S006/P005 
Transfer roller
 S006/P006 
Transfer charger electrode
 S006/P007 
Developing bias electrode SP
 S006/P008 
Separation electrode
 S006/P009 
Main charger electrode SP
 S006/P010 
Earth electrode SP
(1)
Remove the rear cabinet  S001/P001  .
(2)
Remove the front upper cabinet  S001/P002  .
(3)
Remove the right cabinet  S001/P003  .
(4)
Remove the left cabinet  S001/P004  .
(5)
Remove the fan motor unit  S010/P001  .
(6)
Remove the document table glass  S001/P007  .
(7)
Remove the MCU (PCU) PWB unit  S009/Ua002  .
(8)
Remove the power PWB unit  S009/Ua001  .
(9)
Remove the scanner (reading) unit  S004/Ua001  .
(10) Remove the gear and the screw, and remove the developing
bias electrode (S006/P003). 
*
Cleaning
Use absolute alcohol to clean the developing bias electrode.
*
Troubles caused by improper work
1) Print image trouble (Insufficient density, streaks in the main
scanning direction)
2) Toner dispersion
(11) Remove the gear and the screw, and remove the photoconduc-
tor earth electrode (S006/P004).
*
Cleaning
Use absolute alcohol to clean the photoconductor earth electrode.
(12) Release the hook from the section A in the figure, and remove
the transfer roller (S006/P005).
*
Cleaning
Use absolute alcohol to clean the transfer roller. 
*
Troubles caused by improper work
1) Print image detect (Insufficient density, improper density
balance, streaks in the main scanning direction) 
(13) Release the hook, and remove the transfer charger electrode
(S006/P004).
S006/P003/CLN
S006/P004/CLN
S006/P005/CLN
A
9 – 22
*
Cleaning
Use absolute alcohol to clean the charger electrode. 
*
Troubles caused by improper work
1) Print image detect (Insufficient density, improper density
balance, streaks in the main scanning direction) 
(14) Remove the screw, and remove the developing bias electrode
SP 9S006/P007).
*
Cleaning
Use absolute alcohol to clean the developing bias electrode SP.
*
Troubles caused by improper work
1) Print image defect (Insufficient density, streaks in the main
scanning direction.)
2) Toner dispersion 
(15) Slide and remove the separation electrode (S006/P008).
*
Cleaning 
Use absolute alcohol to clean the separation electrode.
*
Troubles caused by improper work
1) Paper jam
(16) Remove the bottom base plate  S001/P009  .
(17) Pull out the main charger electrode SP (S006/P008).
*
Cleaning
Use absolute alcohol to clean the main charger electrode SP. 
*
Troubles caused by improper work
1) Print image defect
(Dirt, streaks in the main scanning direction)
(18) Pull out the earth electrode SP (S006/P010).
*
Cleaning
Use absolute alcohol to clean the earth electrode SP.
*
Troubles caused by improper work
1) Paper jam
S006/P006/CLN
S006/P007/CLN
S006/P008/CLN
S006/P009/CLN
S006/P010/CLN
9 – 23
S007
Fusing, paper exit
Section
Unit
Part
JOB
CODE
After-work
NOTE
S No.
Part name
Ua No.
Unit name
Ub No.
Unit name
P No.
Part name
JOB No.
S 007
Fusing, paper exit
Ua 001
Fusing unit
ASS
P 001
Pressure roller
ASS
CLN
P 002
Paper guide sheet
ASS
CLN
P 003
Paper exit roller L
ASS
CLN
P 004
Paper exit roller U
ASS
CLN
P 005
Paper exit detector
ASS
P 006
Fusing temperature sensor
ASS
CLN
P 007
Heat roller
ASS
CLN
P 008
Heater lamp
ASS
P 009
Separation pawl
ASS
CLN
P 010
Temperature fuse A
ASS
CLN
P 011
Temperature fuse B
ASS
S007/Ua001/
P006/CLN
S007/Ua001/
P008
S007/Ua001/
P007/CLN
S007/Ua001/
P010/CLN
S007/Ua001/
P011
S007/Ua001/
P007/CLN
S007/Ua001/
P004
S007/Ua001/
P005
9 – 24
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