Panasonic TX-21GV1, Руководство по обслуживанию

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X-POSITION ADJUSTMENT
S/W PULSE TEST PIN PATH ADJ. JIG
TEST POINTS
ENVELOPE TEST PIN PATH ADJ. JIG
MEASURING EQUIPMENT OSCILLOSCOPE
VR CONTROL PATH ADJ. JIG
ADJUSTMENT
ADJUST BOSS MAIN BASE
1) Connect the path adjustment fixture to PTO1 of the MAIN CIRCUIT BOARD.
2) Play back the ALIGNMENT TAPE (COLOUR BAR ALIGNMENT).
3) Connect channel-1 scope probe to S/W PULSE TEST PIN of PATH ADJ. JIG.
4) Connect channel-2 scope probe to ENVELOPE TEST PIN of PATH ADJ. JIG.
5) Turn the VR CONTROL to the centre point. (If the VR CONTROL is completely turned anti-clockwise, it is positioned on
another tracking centre.)
6) With the VR CONTROL in the centre state, turn the ADJUST BOSS by using a FLAT TYPE SCREW DRIVER and adjust
the X-POSITION to obtain maximum envelope waveform.
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X-position adjustment
Fig.46.
CENTRE
CENTRE
CCW CW