AR-651 (serv.man11). Laser optical unit - Sharp Copying Equipment Service Manual (repair manual). Page 9

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AR-651/810  LASER & OPTICAL UNIT  8 - 9
(3)  Remove the laser fan motor.
(4)  Disconnect 3 connectors and pull out the laser
unit.
[C] Laser control PC board (PLG board)
(1) Remove the laser unit.
(2) Disconnect 5 connectors and remove 4 screws
to take off the PLG board.
[B] Laser optical unit
(1) Remove the original glass and lens cover.
( 
 Chap.6)
(2) Loosen 2 laser unit set screws.
Notes: 1. Do not leave fingerprints or stain on the slit
glass.
2. Pay close attention not to make an impact
or vibration on the laser optical unit since it
is a precise apparatus.
3. The laser optical unit, which has been
removed, should be placed as shown, on a
left surface.
4. Do not disassemble the laser optical unit in
the field since it is precisely adjusted and
very sensitive to dust and stains.
Connector
Laser unit
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AR-651 (serv.man51) The improvement for image glossy lines due to grease of cleaning roller. Technical Bulletin 2 82.16 KB
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AR-651 (serv.man48) ROM upgrade ... (5) Technical Bulletin 10 153.94 KB
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AR-651 (serv.man50) The improvement for displaying tandem LCF check paper Technical Bulletin 6 1.64 MB
AR-651 (serv.man32) Correction of SRAM parts code. Technical Bulletin 1 12.92 KB
AR-651 (serv.man52) The improvement for waving vertical lines in the rear side of the copy image Technical Bulletin 2 240.2 KB
AR-651 (serv.man53) Correction for loss of image 1 3 from the trail edge Technical Bulletin 1 12.31 KB
AR-651 (serv.man54) Countermeasure for background CD3 error near toner empty-toner recycle pipe blockage. Technical Bulletin 2 32.94 KB
AR-651 (serv.man55) Change of part code of PWB unit listed in the fusing drive section in the part guide 24 . Technical Bulletin 1 22.35 KB
AR-651 (serv.man56) Correction of parts codes of pulleys on the reversion drive unit listed in the part guide 13 . Technical Bulletin 1 14.8 KB
AR-651 (serv.man57) Improvement carried out to stop EB5 jam, due to over running of the paper stop position. Technical Bulletin 1 8.1 KB
AR-651 (serv.man58) ROM upgrading (4) Technical Bulletin 8 46.83 KB
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AR-651 (serv.man27) 1 Change in sensors and screws to comply with RoHS, 2 One part code available for seal part, 3 Providing commonality of parts and discontinued use of arrow labels, 4 Change in cassette shafts to comply with RoHS, 5 Change in bushings. Technical Bulletin 4 172.22 KB
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