Sony DNW-A100 Maintenance Manual page 498

7-1-8. AT Head Head-to-tape Contact Check and Adjustment
Check
4. Turn the Power On
5. Play Back the Alignment Tape
Play back the 10 kHz, _10 VU signal portion
(3:00 to 4:55) on the CR8-1A/PS.
6. Check the AT Head Head-to-tape
Contact
(1) Push portions A and B of the tape shown in
the figure slightly. (It means increasing the
tape's wrapping angle against the AT head.)
(2) Check that both increasing values of the
output levels in CH-1 and CH-2 satisfy the
specification.
If the specification is not satisfied, perform
steps 7 and later.
7-38
. . . . . Alignment tape : CR8-1A/CR8-1A PS (3:00 to 4:55)
<AUDIO output waveform>
CH-1
CH-2
Spec. : Both increasing values of the output levels in CH-1 and CH-2
are within 5%.
AT Head Head-to-tape Contact Check
B
A
AT head
DNW-A100/A50/A45
DNW-A100P/A50P/A45P