Sony DNW-A100 Maintenance Manual page 482

7-1-3. Video Tracking Check and Adjustment
(8) Check that the levels A and B as shown in the
figure satisfy the specification 10.
If the waveform is not satisfied the specifica-
tion 10, perform the adjustment from step (1)
again.
(9) Check the tape running at the drum entrance
side in the following modes.
. PLAY mode
. F. FWD mode
. REW mode
. REV
1 mode
x
. VAR _1/30 mode
x
If the tape curl does not satisfy the specification
11 at either TG-0, TG-1 or TG-2, perform the
adjustments from the step (1) again.
14. Recheck the Video Tracking
Perform steps 5 through 11 again.
7-22
<Fig. 2>
A
B
A = RF max x 0.8
B x 100 > 70%
Spec.10:
A
<Tape running check at entrance side>
Spec. 11: 1 TG-0
The tape runs without any curl at the upper and
lower flanges.
2 TG-1 (S Tension regulator)
The tape runs in contact with the upper flange.
The tape curl is less than 1/10 of the tape width.
3 TG-2 (Entrance guide)
The tape runs in contact with the upper flange.
The tape curl is less than 1/10 of the tape width.
4 Lead of drum entrance side
The tape runs in contact with the drum lead and
without any curl at the lead.
Tracking Adjustment at Drum Entrance Side
RF max
DNW-A100/A50/A45
DNW-A100P/A50P/A45P