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SHARP DXV288W
Service Manual


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

Description of SHARP DXV288W 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 16 (click to view)
DX-V280W/V288W
� CLV servo failure. Change the CD TEST mode from 2 to 3. Does the disc motor run? No Is voltage generated for about 0.3 to 1.5 sec between Yes the pins 26 and 27 of IC5 when the TEST mode is changed from 2 to 3? No Is the pin 13 (CL+) ofIC12 in "High" state for 0.3 to 1.5 sec and subsequent pulses when the TEST mode is changed from 2 to 3? Yes IC5 is defective or broken wire exists. IC2 is defective. No
0.3~1.5sec 5V

The disc motor is defective or broken wire exists.
0.3~1.5sec

Yes (excessively high rotational speed)

Is eye pattern output to the pin 41 (HF) of IC1? (Unclear waveform is allowable.) Yes

No

Check again that the objective lens of optical pickup is clean. If not, clean it. Check R17, R21~23, C15~17. If OK, IC1001 is defective. Check R35 and C31. Check the PWB pattern.

Is eye pattern output to the pin 11 (EFMIN) of IC2? Yes IC2 is defective.

No

� HF failure. Does the pin 7 (TE) of IC1 give output (tracking error signal) in the CD TEST mode 3? Normal
VREF

Abnormal

Check the cable of CNP1/CNS1. Check R1. If OK, IC2 is defective or the optical pickup is defective.

Does the pin 15 (TG1) of IC1 give output in the CD TEST mode 6? Yes
VREF

No

Check R32~38, C30~34. If OK, IC1 is defective.

Is there output between the pins 11 and 12 of IC5? Yes Check the connection of optical pickup and connector. If OK, broken wire exists or the optical pickup is defective. � The slide motor fails to run. Set the TEST mode, and press the SKIP UP/SKIP DOWN button. Is the slide feed signal output between the pin 29 of IC1 and VREF? Yes

No

IC5 is defective.

No

Is the slide feed signal output to the pins 20 and 21of IC4? Yes

IC4 is defective. No

Check R26 and R27. If OK, IC1 is defective. Is the slide feed signal output between the pins 17 and 18 of IC5? Yes The slide motor is defective or broken wire exists. IC5 is defective.

No

� 16 �

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