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Information
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Featured Product
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- CONTENTS/ACCESSORIES/CAUTIONS
- CONTROLS
- DISASSEMBLY FOR REPAIR
- BLOCK DIAGRAM
- CIRCUIT DESCRIPTION
- TROUBLESHOOTING
- ADJUSTMENT
- PC BOARD
- SCHEMATIC DIAGRAM
- EXPLODED VIEW
- PARTS LIST
- SPECIFICATIONS
There are currently no product reviews.
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About the service it's very fast and reliable. About the manual the quality is high enough to read even the tiniest details on the wiring diagrams so you can't ask much more than that, let it alone for a manual of a product from 20 years ago. Thank you, very satisfied.
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The downloaded quality was as good as the orignial
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This is a great and complete Service Manual for the Sharp GF8585HB. Giving full and detailed technical insight. Good to find these manuals online.
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Everything was ok with the manual. If I have a small complaint, is that I ordered it during the weekend and I think you guys were closed. But I did receive it late Sunday. I will surely order from you again
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Best Service! Very fast and easy to handle. Fast Download an you can come back every day to download again
DM-3090
TROUBLE SHOOTING
� Disc motor fails to run
Does waveform appear on the pins 24 and 25 of IC1201 in the TEST mode focus gain coarse adjustment step? Yes Does waveform appear on the pins 34 and 35 of IC1601, pins 1 and 2 of CNP1603? Yes Replace the completed disc motor. Check soldering joint of PWB of completed IC1601 and CNP1601 disc motor. No Check soldering joint and parts of pins 24 and 25 of IC1201, and peripheral circuit.
No
� Tracking servo failure
Does waveform appear on the pins 8 and 9 of IC1601, and pins 1 and 3 of CNS1101 in the TEST mode focus gain adjustment step? Yes Replace the optical pickup. No Check the soldering joint of pins 20 and 21 of IC1201, IC1601, IC1601, CNS1101.
� Slide servo failure
Does the pickup move to external and internal periphery when the or button is pressed in the TEST mode? No Is there any change on the pins 22 and 23 of IC1201 when the or button is pressed? Check the waveform on the pins 22 and 23 of IC1201, check the peripheral parts and soldering joint. Yes Check the waveform on the pins 22 and 23 of IC1201, check the peripheral parts and soldering joint.
No
Yes Is there any change on the pins 28 and 29 of IC1601, and the pins 1 and 2 of CNP1602 when the or button is pressed? Yes Does voltage on the positive and negative terminals of slide motor change when the or button is pressed? Yes Replace the slide motor. Check the soldering joint connected to the slide motor to see whether there is wire breakage. Check the soldering joint of IC1601 and CNP1602.
No
No
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