TROUBLESHOOTING GUIDE
E-2
NO PICTURE
No
No
No
No
Yes
Yes
Yes
Yes
Are the Brightness and
Contrast set to normal ?
Adjust Brightness and Contrast.
Is the voltage at pin 1
of CD603 DC8V ?
Check P.CON + 8V line.
Is the signal at pins 14, 15
and 16 of IC601 output ?
Is the waveform at pins 3
and 5 of IC601 normal ?
Check Y OUT and c OUT line.
Replace IC601.
Check Q801~Q806 and peripheral
circuit.
GOOD PICTURE BUT NO SOUND
No
No
Is CD353 inserted ?
Inset CD353.
Is the voltage at pin 10
of IC351 DC18 V ?
Yes
Yes
Check D1719, D1732 and
peripheral circuit.
Check IC351 and peripheral circuit.
