TROUBLESHOOTING GUIDE
Yes
Yes
Yes
NO PICTURE
Check Q804, Q805, Q806 and CD850.
Check Q602 and Video Out Line.
Check IC601.
Is the waveform at pin 47
of IC601 normal ?
Check D604.
Check D607.
Check CHROMA 9V line.
Check P.CON 9.6V line.
Adjust Brightness and Contrast.
Is the voltage at pin
17 of IC601 DC9V ?
Is the voltage at pin 41 of
IC601 DC5V ?
Is the voltage at pin 8,
38 of IC601 DC5V ?
Is the signal at pin 12, 13
and 14 of IC601 output ?
Check J801 and CRT.
No
No
No
No
No
Is the waveform at TP801,
TP802 and TP803 of CRT
PCB output ?
No
Yes
No
No
Yes
Yes
Yes
Yes
Are the Brightness and
Contrast set to minimum ?
Is the voltage at pin 3 of
IC601 DC9V ?
E-4
