Read Sharp AL-840 (serv.man8) Service Manual online
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Cleaning
Use absolute alcohol to clean the No. 1 mirror as shown below.
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Troubles caused by improper work
1) Copy image defect
(Distortion)
(Streaks in the sub scanning direction)
(Uneven density)
(Streaks in the sub scanning direction)
(Uneven density)
2) L1-00 trouble
3) L3-00 trouble
S004/Ua001/Ub002
Scanner unit B
S004/Ua001/Ub002/P001
No. 2 mirror
S004/Ua001/Ub002/P002
No. 3 mirror
(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 scanner drive wire S004/Ua001/P008 .
(8)
Remove the scanner unit B (S004/Ua001/Ub002).
(9)
Remove the screw, and remove the No. 2 mirror (S004/Ua001/
Ub002/P001) and the No. 3 mirror (S004/Ua001/Ub002/P002).
Ub002/P001) and the No. 3 mirror (S004/Ua001/Ub002/P002).
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Note for assembly
Be careful not to mistake the front and the back sides of the no. 2
and No. 3 mirrors.
and No. 3 mirrors.
*
Cleaning
Use absolute alcohol to clean the No. 2 and No. 3 mirrors.
*
Troubles caused by improper work
1) Copy image defect
(Distortion)
(Streaks in the sub scanning direction)
(Uneven density)
(Streaks in the sub scanning direction)
(Uneven density)
2) L1-00 trouble
3) L3-00 trouble
S004/Ua001/Ub001/
P002/CLN
P002/CLN
S004/Ua001/Ua002
S004/Ua001/Ub002/
P001/CLN
P001/CLN
S004/Ua001/Ub002/
P002/CLN
P002/CLN
S004/Ua001/Ub002/
P001/CLN
P001/CLN
S004/Ua001/Ub002/
P002/CLN
P002/CLN
9 – 18
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