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'
1
'
(
'
1
1
I
t
H
<<
! 2.8 ~ 3.2mS
Figure 82.
@ Adjustment of Drum Lock
Note:
After this adjustment,
check
and adjust the play/record
switching point.
1. Put the unit in PLAY mode.
+2. Observe
the
output
of TP-703
on oscilloscope
(with
TP-708
grounded),
and
adjust
R711
(drum
lock) to
obtain the value as shown. (Fig. 84)
3.8+0.2V
Figure 84.
e Adjustment of Capstan Lock
. Put the unit in RECORD mode.
i
Figure 85.
® Checking of Drum Motor Current
. Put the unit in RECORD mode.
. Observe the output of TP-705 on oscilloscope (external
LP RAPRAPPAPPDPSDP
PPD SPI
IRSI
trigger, TP-702) and check its value as shown. (Fig. 86)
NO
=
Below 50mVp-p
Below 100mVp-p
Figure 86.
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