JMECHA - Sony VCR Service Manual (repair manual). Page 33

— 33 —

1)

Play the tracking alignment tape (XH2-1) (Ref. No. J-5) back.

2)

Adjust TG3 guide until the envelope of entrance side waveform
becomes flat.

3)

Adjust TG6 guide until the envelope of exit side waveform
becomes flat.

Do not touch or adjust TG3 and TG4 guide zenith adjustment screw.

1)

Play the tracking alignment tape (XH2-1) (Ref. No. J-5) back.

2)

Run the tape in FWD mode.  Confirm that tape runs while
keeping contact with upper flange of TG3.  If any clearance is
found between top flange and tape, rotate the adjustment nut
in clockwise direction until tape runs while keeping contact
with upper flange of TG3.

When tape runs while keeping contact with upper flange of
TG3, confirm that the tracking waveform does not change.  If
the tracking waveform has poor amplitude at the entrance side
as shown, perform tracking adjustment of entrance side.

After entrance side is adjusted, establish the RVS mode.  Make
an attempt to rotate the TG3 adjustment nut by 180 degrees in
the counter-clockwise direction in order to confirm that tape
rises upward.  Upon confirmation, return the TG3 adjustment
nut to the original position.