Sony HDW-750 Maintenance Manual page 433

Adjustment Procedure
Drum entrance side
3. Tracking adjustment at drum entrance
side
(1) Set the switch S402/MDC-13 board (side B)
to OFF.
(2) Play back HR2-1A (from 15 : 00 to 20 : 00).
(3) Loosen the set screw on top of the S1 guide
with the screwdriver (tool) TG adjustment.
(4) Rotate the upper flange of the S1 guide using
the screwdriver (tool) TG adjustment until
the 1 to 2 peaks are created in the RF wave-
form as shown.
Check the followings at this time.
. There does not exist clearance between the
upper flange of the S1 guide and the tape
edge.
. There exists clearance between the upper
flange of the S2 guide and lower edge of
tape.
(5) Rotate the upper flange of the S1 guide
clockwise until the RF waveform becomes
almost flat.
(6) Set the switch S402/MDC-13 board to ON.
Then D404 turns on and operation of the
TRACKING control knob is enabled.
(7) Play back HR2-1A (from 01 : 00 to 15 : 00 ).
(8) Rotate the TRACKING control (RV401) so
that the center of the RF waveform is reduced
to about 80% of the maximum amplitude.
(9) Rotate the upper flange of the S1 guide for
fine adjustment until the specifications 1 to 3
are satisfied.
(10)Tighten the set screw on top of the S1 guide.
Standard tightening torque :
_2
10 x 10 N.m (1.0 kgf.cm)
HDW-750/750CE V1
REC A PB
(ch 1)
Tape runs while
keeping contact with
the lower flange.
FE head
S5 S4 S3
Tape runs while
keeping contact with
the lower flange.
8-2. Tape Run System Adjustment
RF waveform
(Flattering at top) 1 to 2 peaks
Tape runs while
keeping contact with
Cleaning
the upper flange.
blade
CTL head
Drum
S2 S1
Tape runs while
keeping contact with
Drum rabbet guide
the lower flange.
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