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Well done!!! I found what I need to have, indeed!
Furthermore, due to my hobby is repairing vintage equipments, I added this web site in my desk toolbar because I have in mind to search further service manuals. Thanks a lot www.owner-manuals.com !
Regards, Maurizio
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Again very good service manual, this time very fast download. AAAAA+
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Ckear manual, well reproduced with plenty of overlap on critical pages.
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I buy the service manual cheaper here than in elsewhere.Am happy with this site. I recommended the Owner-Manuals.com
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Great Manual. It was exactly what I was looking for
DVD-Series
2. How to Make FES (Focus Error Signal)1· · · Hologram Foucault Method
Note: The following PD form is slightly different from the actual one. (image only)
(At the time of just focus)
(Close to the disc)
(Far from the disc)
C B A
D + � No error + � + + � �
Actual form has I/V amplifiers here
q
From the deviation of focus, the light shown above (black part) comes back on PD. By receiving the output through a differential amplifier, DC voltage, which responded to defocusing, is output.
3. How to Make Thread Error Signal
When thread does not move..... OL
Bump
PU
Take out the low frequency component for tracking error signals. Tracking Error Signal _ LPF _ Thread Error Signal With this, move the thread to make OL stay around the free neutral point.
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$4.99 DV890S SHARP Owner's Manual Complete owner's manual in digital format. The manual will be available for download as PDF file aft…
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