Sony RDR-VX535 Service Manual page 98

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d. ACE HEAD POSITION (X-POINT) ADJUSTMENT
1) Playback the alignment tape (Color bar)
2) Intermittently short-circuit the two Test Points on Main PCB. (See Fig. 6-2)
3) Press the "0, 5" remote control buttons, then adjustment is operates automatically. (See Fig. 6-1)
4) Connect the CH-1 probe to "Envelope" the CH-2 probe to "H'D switching pulse" and then trigger to CH-1.
5) Insert the (-) driver into the X-Point adjustment hole and adjust it so that envelope waveform is maximum.
Test point: TP2 (Audio Output)
TP3 (Envelope)
TP4 (H'D S/W -Trigger)
TP5 (Control Pulse)
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Fig. 6-8 Location of Test point (VCR Main PCB-Top View)
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CONTROL PULSE
HEAD SWITCHING
ENVELOPE
AUDIO OUTPUT
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0 5 8 2 9 9 4 2 8
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