Panasonic NV-VP31GL, Manual

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Measurement point Adjustment point Mode Disc
Tangential adjustment
screw
Tilt adjustment screw
T01 (inner periphery) play
T43 (outer periphery) play
DVDR-S15 or DVDT
Measuring equipment Adjustment value
None (Main unit display for servicing is used.) Adjust to the minimum jitter value.
11.4.1.1. Adjustment procedure
1. Place the Unit in SERVICE POSITION
2. While pressing PLAY (DVD) and OPEN/CLOSE buttons on the
main unit, press "5" on the remote control unit simultaneously.
3. Confirm that "J_xxx_yyy_zz" is shown on the front display.
For your information:
"yyy" and "zz" shown to the right have nothing to do with the jitter value. "yyy" is the error
counter, while "zz" is the focus drive value.
Note:
Jitter value appears on the front display.
4. Play test disc T01 (inner periphery).
5. Adjust tangential adjustment screw so that the jitter value is
minimized.
6. Play test disc T43 (outer periphery).
7. Adjust tilt adjustment screw 1 so that the jitter value is minimized.
8. Play test disc T43 (outer periphery).
9. Adjust tilt adjustment screw 2 so that the jitter value is minimized.
10. Repeat adjusting tilt adjustment screws 1 and 2 alternately until
the jitter value is minimized.
11.4.1.2. Important points
1. Do tangetial adjustment first, then tilt adjustment.
2. Repeat adjusting two or three times to find the optimum point.
3. Finish the procedure with tilt adjustment.
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