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SHARP DV890S
Service Manual


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  • Contains Circuit Diagrams
  • Download
  • PDF Format
  • Complete manual
  • Language: English
Price: $4.99

Description of SHARP DV890S Service Manual

Complete service manual in digital format (PDF File). Service manuals usually contains circuit diagrams, printed circuit boards, repair tips, wiring diagrams, block diagrams and parts list. Service Manual ( sometimes called Repair Manual ) is used mainly by technicians.

If You just want to know how to use Your tv, video, mp3 player etc. You should look for Owner's Manual. After placing order we'll send You download instructions on Your email address.

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Text excerpt from page 22 (click to view)
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.

22

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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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