Sharp AL-840 (serv.man8) Service Manual ▷ View online
S003
Paper feed, paper transport 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 003
Paper feed, paper
transport
transport
P 001
Paper width detector
ASS
P 002
Paper set lever
ASS
P 003
Paper pressure plate
ASS
P 004
Paper feed roller clutch spring
ASS
GRE
P 005
Paper feed roller
ASS
CLN
P 006
Paper feed clutch sleeve A
ASS
GRE
P 007
Paper feed clutch sleeve B
ASS
GRE
P 008
Paper feed clutch lever
ASS
P 009
Paper separator
ASS
CLN
S003/P003/GLN
S003/P002
S003/P009/CLN
S003/P009/
CLN
CLN
S003/P004/GRE
S003/P007/GRE
S003/P005/
CLN
CLN
S003/P006/
GRE
GRE
S003/P008
S003/P001
9 – 9
S003/P001
Paper width detector
S003/P002
Paper set lever
S003/P003
Paper pressure plate
(1)
Remove the rear cabinet S001/P001 .
(2)
Remove the front upper cabinet S001/P002 .
(3)
Remove the left cabinet S001/P004 .
(4)
Pull and remove the paper width detector (actuator) (S003/
P001) on one side from the back of the rear cabinet.
P001) on one side from the back of the rear cabinet.
(5)
Cut the binding band, remove the connector and the screw, and
remove the paper width detector (switch) (S003/P001).
remove the paper width detector (switch) (S003/P001).
*
Troubles caused by improper work
1) Right/left void areas defective
2) Image position detective
3) Transfer roller dirt
(Copy dirt)
(Paper jam)
(Paper jam)
(6)
Remove the right cabinet S001/P003 .
(7)
Remove the screw, and remove the paper set lever (S003/
P002)and the paper pressure plate (S003/P003).
P002)and the paper pressure plate (S003/P003).
*
Troubles caused by improper work
1) Mis-feed
2) Paper jam
3) Paper skew
S003/P004
Paper feed roller clutch spring
S003/P005
Paper feed roller
S003/P006
Paper feed clutch sleeve A
S003/P007
Paper feed clutch sleeve B
S003/P008
Paper feed clutch lever
S003/P009
Paper separator
(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 document table glass S001/P007 .
(6)
Remove the fan motor unit S010/P001 .
(7)
Remove the MCU (PCU) PWB unit S009/Ua002 .
S003/P001
S003/P001
S003/P003
S003/P002
9 – 10
(8)
Remove the power PWB unit S009/Ua001 .
(9)
Remove the scanner unit S004/Ua001 .
(10) Remove the screw, the gear, and the hook, and remove the
upper frame (Scanner (writing) unit) unit.
(11) Remove the counter-screw, and remove the paper feed roller
clutch spring (S003/P004), the paper feed roller (S003/P005),
the paper feed clutch sleeve A (S003/P006), and the paper feed
clutch sleeve B (S003/P007).
the paper feed clutch sleeve A (S003/P006), and the paper feed
clutch sleeve B (S003/P007).
*
Cleaning
Use absolute alcohol to clean the paper feed roller.
*
Grease
Apply grease to the inside of the paper feed roller clutch spring,
and to the surface of the paper feed clutch sleeve A and the paper
feed clutch sleeve B.
and to the surface of the paper feed clutch sleeve A and the paper
feed clutch sleeve B.
*
Note for assembly
Be careful to the installing direction of each part. Be sure to set
the rear edge of the paper feed roller clutch spring to the notch
section of the paper feed clutch sleeves A/B.
the rear edge of the paper feed roller clutch spring to the notch
section of the paper feed clutch sleeves A/B.
*
Troubles caused by improper work
1) Mis-feed, paper jam
2) Paper skew
(12) Remove the No. mirror (f
θ
mirror) S005/Ua001/P004 .
(13) Remove the paper feed solenoid S005/Ua001/P010 .
(14) Remove the paper feed clutch lever (S003/P008).
S003/P007/GRE
S003/P004/GRE
S003/P005/
CLN
CLN
S003/P006/GRE
S003/P008
9 – 11
(15) As shown in the figure below, use a screwdriver to remove the
paper separator (S003/P009).
*
Cleaning
Use absolute alcohol to clean the paper separator.
*
Troubles caused by improper work
1) Mis-feed, paper jam
2) Paper skew
S003/P009/CLN
S003/P009/CLN
S004
Scanner (Reading) 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 004
Scanner (reading)
Ua 001
Scanner (reading)
unit
unit
ASS
ADJ M3
P 001
Scanner home position sensor
ASS
P 002
Scanner (copy) lamp drive
PWB
PWB
ASS
ADJ M10
Adjustment
is required
when replace
is required
when replace
P 003
Scanner motor
ASS
P 004
Scanner motor gear
GRE
P 005
CCD unit (CCD/lens)
ASS
ADJ M4
CLN
P 006
Scanner rail
GRE
P 007
Scanner shaft
ASS
GRE
P 008
Scanner drive wire
ASS
ADJ M2/M3
Ub 001
Scanner unit
A
A
ASS
ADJ M3
P 001
Scanner (copy) lamp
ASS
ADJ M10
Adjustment
is required
when replace
is required
when replace
CLN
P 002
No. 1 mirror
ASS
CLN
P 003
Scanner lamp light quantity
sensor
sensor
CLN
Ub 002
Scanner unit
B
B
ASS
P 001
No. 2 mirror
ASS
CLN
P 002
No. 3 mirror
ASS
CLN
9 – 12
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