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.
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"
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.
Text excerpt from page 18 (click to view)
3-3. SERVO SYSCON CIRCUIT
A.
Playback picture is not good.
Noise appears although adjusting tracking. YES
NO
Adjust tracking.
Noise shakes up and down on the screen.
NO
Noise appears although change cassette tape.
YES
Check and re-adjust the Path of Deck.
YES
Is CTL pulse applied to pin 73 of IC601?
NO
CTL HEAD height is normal and there is not dust.
NO
Adjust the HEAD height and remove dust.
YES
YES
Check circuit adjacent to IC601.
Is CTL pulse input to pin 71 and 72 of IC601?
NO
Check R523, R524 C508, C509.
YES
The voltage of pin 91 of IC601 is not changed. YES