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Very good quality, prompt response. This website has reasonable prices and wide range of manuals that are hard to find.
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The document was usefull, and it was exactly what I was looking for.
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OK?..manual is complet and helpfull... for repairing such a old and rare boombox like JVC PCM it is necessary...
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Super Anleitung. Ordentliche Auflösung. Das ganze noch in Deutsch wäre zu schön. Alle Datenblätter sind sauber Kopiert und alle Leitungswege sind sauber ausgeführt
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Thanks God for the internet and thanks for the service like this - proffessional solution on time.
TROUBLESHOOTING HINTS
1. No Character
No Character
Are the Contrast & Brightness Controls in OSD menu maximum? Yes
No
Change the Contrast & Brightness control value to maximum
Is whole screen bright? Yes
No No Raster
Refer to No Raster
Is CRT Cathode (Rk, Gk, Bk) signal level normal? No
Yes Rk, Gk, Bk About 45Vpp
Check the peripheral circuit of CRT
Is the output signal of the (pin 14, 16, 19) pre-amp IC801, normal?
Yes
Check the video output circuit, IC801(pin 5, 7, 9) and its ambient circuit
No Is 12Vdc line normal? Yes Is clamping pulse (pin 12 of IC801) normal? Yes No 12Vpp Check the clamping pulse circuit No Trouble in 8Vdc line of the Main PWB
Is input signal normal? Yes Trouble in IC801 and its ambient circuit
No
Check the signal cable
14
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