Playback Picture Jitters Vertically - JVC HR-J6009UM Service Manual

Video cassette recorder
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TROUBLESHOOTING GUIDE
PLAYBACK PICTURE JITTERS
VERTICALLY
No
Does tracking noise
appear in the picture?
Yes
By adjusting the manual
tracking UP/DOWN buttons, will the
noise disappear in the picture?
Yes
Are GUIDE POSTS
the right height?
Yes
Is PG SHIFTER Adjustment 6.5H?
Yes
Is PB-Y waveform normal?
No
Check PB-Y circuit.
No
No
No
Yes
Check P/B ENVELOPE.
Adjust GUIDE POST height.
Adjust PG SHIFTER.
Replace IC1001.
1-33

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