|
|
|
Categories
|
|
Information
|
|
Featured Product
|
|
|
 |
|
|
There are currently no product reviews.
 ;
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.
 ;
Ottima qualità grafica e completo nelle notizie. Costo abbastanza contenuto.
;
Great and quick support. The maual was exactly what I was looking for and my problem
solved. Many thanks.
;
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.
3-3. SERVO SYSCON CIRCUIT B. A.
Playback picture is not good. YES Noise appears on the screen on the whole. YES Are SW pulse and HA SW applied to PreAmp circuit? NO Noise appears although change cassette tape. YES Check and re-adjust the Path of Deck. YES Is Enve.wavefrom supplied to pin 4 of PT01 YES NO NO Check D.PG input and connector between deck and main PCB. Noise shakes up and down on the screen. YES NO Check pattern NO Check flow A Playback picture is not good. YES
Noise appears although adjusting tracking. YES
Is SW pulse obtained from pin 16 of IC601?
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.
Check video circuit.
Check connector, Head Amp and Head dust.
NO
Change head
C.
YES YES Check circuit adjacent to IC601. Auto stop during playback. YES Check R668, R669 C508, C509. Is Reel pulse applied to pin 5 and 6 of IC601? YES The voltage of pin 91 of IC601 is not changed. YES NO Check R518 and C511. Is D.FG applied to pin 67 of IC601 YES NO Check connector and D.FG circuits. NO Check reel sensor.
Is CTL pulse input to pin 71 and 72 of IC601
NO
YES
Check IC601
Check IC601.
21
22
|
|
|
> |
|
