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El manual esta muy detallado, los numeros de partes y los esquemas de despiece son correctísimos y muy claros, tanto para los técnicos experimentados como para los novatos.
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Ottima qualità grafica e completo nelle notizie. Costo abbastanza contenuto.
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Great and quick support. The maual was exactly what I was looking for and my problem
solved. Many thanks.
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Very good service Within one day i received a pdf of the users manual and electric circuits so I was able to measure the different voltages in the printed circuit and find out the fault Payment was also reliable and easy.Without the manual i could not have repaired.So thanks to "Search for a manual"
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you are doing great job guys.....my father ask me to find out the schematics of Sony KV25R1D to sort out the problem ..(he was electrical technician, and excperianced with TV and simillar stuff). finally he found the cause and change all necessary parts....now he has got working old dog..and is very happy!!... thank you all.. NB..he also saved the repair cost.
VC-6050 VC-7050 VC-H8050
NO.13 FLOW CHART NO.15
The drum motor fails to run. No head switching pulse.
Is the voltage more than about 2.6V Is the drum motor rotating? NO Check IC701. See FLOW CHART NO.13,14. DC given out pin(46) of IC701.
YES
Is the PG signal and drum FG NO Are there drum PG M.M.signal at Is the supply voltage of 5V feed to Check PC 5V line. signal present on pins(66) and (65) pin(81) of IC701? pin(3) of IC706? of IC701, respectively?
YES NO
YES NO Check between pin(46) of IC701 Is the voltage more than about 2.6V
YES
Check C723 and readjust R724. applied at pin(2) of IC706? IC706. (HEAD SW. POINT control.) and all the way up to pin(2) of
YES Replace IC701. NO
Is the supply voltage of feed to Check AT 12V line. pin(21) of IC706? Are the PG and drum FG YES Could be lines between IC706 signals present on pins(7) and (8) of
NO
IC706? Check peripheral circuit of IC706.
and IC701. YES
Check or replace drum motor.
FLOW CHART NO.14
42
Replace IC706.
NO
The drum motor runs only for a few seconds.
Is drum PG signal given out NO Check pin(4), (5), (6) of IC706 and pin(7) of IC706? periperal circuits.
YES
Check or replace drum motor.
Is drum PG signal given out of
pin(66) of IC701?
Check line between pin(7) of IC706 NO and all the way up thru to pin(66) of IC701.
YES
Is V-H.SW.P pulse given out of NO
Check IC701. pin(23) of IC701?
YES
Replace IC701.
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