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X-POSITION ADJUSTMENT
TEST POINTS
MEASURING EQUIPMENT
ADJUSTMENT
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.
S/W PULSE TEST PIN
ENVELOPE TEST PIN
OSCILLOSCOPE
VR CONTROL
ADJUST BOSS
CENTRE
CCW
CENTRE
X-position adjustment
Fig.46.
28
CW
PATH ADJ. JIG
PATH ADJ. JIG
PATH ADJ. JIG
MAIN BASE
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