TROUBLESHOOTING GUIDE
Yes
NO PLAYBACK PICTURE
No
Does E-E appear on
the Monitor TV ?
No
Yes
No
Yes
No
Yes
Is the voltage at pins
22, 52, 60 and 90 of
IC4501 5V ?
Check Power circuit.
Is there PB Y/C signal
at TP4502 ?
Replace IC4501.
Is there Y/C signal at
pin 29 of IC4501 ?
Check Q4606.
Check IC1201 and peripheral circuit.
NO COLOR DURING PLAYBACK
No
No
Yes
Yes
Does FM ENVELOPE
appear at TP4502 ?
Does CHROMA signal
at pin 29 of IC4501 ?
Check TV Block.
Check IC4501 and HEAD AMP
BLOCK.
Replace IC4501.
E-8
Summary of Contents for VTW21FQR
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