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There are currently no product reviews.
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I have this hi-fi system for a long time and I need to repair some things. Founding this manual will be very helpfull :)
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It is pretty good. The schematics were covered all components, the manual also provide the parts list . It's useful for the trouble shooting.
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Very fast service, best quality of the service manual and the schematics
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This service manual of the old video cassette recorder VT-LC50EM is very good readable even the tiniest numbers (i.e. IC-pins). The circuits are very clear. Many details of the schematic are very good described but in GERMAN language. Many schematic details - but complete at all. Common background information of several details are enclosed and physical knowledge of the TFT liquid crystal display for example. The manual lacks PCB drawings. If you understand german I would recommend this manual for you.
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Hi, this is a very clear manual, nice copy, not quite up to the standard of the very best available but better than many others. I think the price was especially fair for a hard to find manual and I would certainly use this manual seller again. Recommended.
XL-1500H
� Focus servo sawtooth wave failure.
Is sawtooh wave output to the pin 33 (FOO) of IC801 ? Yes
1.5~2.5sec
No
IC801 is faulty.
Is +7.0V applied to the pins 21 and 22 (VCC) of IC803 ? No Yes Is sawtooth wave obtained between pins 17 and 18 of IC803 ? Yes
1.5~2.5sec
Check the PWB pattern between pin emiter of Q605 and IC803.
No
Is +5V applied to the pin 7 (MUTE) of IC803 ? Yes
No
Check the PWB pattern between pin 7 of IC803 and pin 66 (CD STB) of IC701.
Check the PWB pattern between pin 33 (FOO) of IC801 and pins 19 and 20 of IC803. If OK. IC803 is faulty.
Is sawtooth wave obtained between pins 13 and 16 of CNP801/CNW801 ? (as shown above) Yes CNP801/CNW801 connection failure or optical pickup failure.
Check the PWB pattern between CNP801/CNW801 and IC803. No
� Spindle motor clv servo failure.
Is following wave output to the pin 41 (DMO) of IC801 when the CD TEST MODE "STEP 3" is changed to " STEP 4" ? Yes
DMO
No
Check the procedure in "HF ERROR". If OK. IC801 is faulty.
Is above wave obtained between pins 1 and 2 of IC803 ? No Yes
Check the PWB pattern between pin 41 (DMO) of IC801 and pins 9 and 10 of IC803. If OK. IC803 is faulty.
Is above wave obtained between pins 9 and 12 of CNP801/ CNW801 ? Yes CNP801/CNW801 connection failure or optical pickup failure.
No
Check the PWB pattern between CNP801/CNW801 and IC803.
� 39 �
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