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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.
NO.21 FLOW CHART NO.22
Playback Although picture played back, color does not appear (E-E mode is possible).
NO FM signal (approx. 0.4 Vp-p) between pins(79) and Is voltage 5V applied to chroma Check the periphery pin(61) of YES
input to the pin(78) (78) IC201. power terminal pin(61) of IC201? IC201 and YC 5V line.
Is luminance signal (approx. 0.4 NO Check between the pin(60) and Is chroma signal (approx. 403 Vp-p) input to the pin(79) IC201? mVp-p/Burst) input into the pin(46) of IC201. (Check C512.)
NO pin(46) of IC201? YES YES Is V-H.SW.P. applied to Check whether the pin(71) and pin(73)
pin(81) IC201? of IC201 oscillate (3.58 MHz)?
NO
V-H.SW.P. line. Check between the pin(58) and pin(35)
NO
Is chroma signal (approx. 508 of IC201. (Check R505, C515.) mVp-p/Burst) input into the
pin(58) of IC201? YES
NO YES YES 286 Is chroma signal (approx. 508 NO NO Vp-p) input to the IC201? pin(19) of IC201. (Check C206.)
Is luminance signal (approx. 0.25 Check the periphery of pins(13), Vp-p) input output to the pins(13), (14) and (16) of IC201. (Check (14) and (16) of IC201, respectively? C203, R201-2, L201, C205, R203.)
YES input into mVp-p/Burst) output to the
Is luminance signal (approx. 0.5 Check between the pin(18) and
pin(35) pin(54) of IC201?
NO NO pin(54) of IC201. (Check C514.) Is luminance signal (approx. 0.5 Check between the pin(21) and
47
NO Is luminance signal (approx. 0.5 Check between the pin(39) and
YES Check between the pin(55) and
Vp-p) input to the IC201? pin(42) of IC201. (Check C208.)
YES Replace IC201.
Vp-p) input to the IC201? pin(26) of IC201. (Check C212.)
YES
Is luminance signal (approx. 0.5 Vp-p) input to the pin(39) of IC201?
NO
Is voltage 5V applied to the CCD section power terminal pin(36) of IC201?
YES
control voltage approx. 5V applied normally to pin(37) from the pin(57) of IC201? Is CCD clock signal (approx. 7.16 MHz/0.5 Vp-p) applied to pin(44) from the pin(69) of IC201?
NO Vp-p) input to the pin(23) of IC201?
Is luminance signal (approx. 0.5 Check between the pins(24) and (23) of IC201. (Check C210.)
YES
VC-A412U/A413U VC-H812U/H813U
Replace IC201.
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