Sony TCM-8EV - Page 13

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BBD Circuit Bias Adjustment
power
supply voltage: 2.1 V de
Procedure:
VOR
recording
mode
af
osc
fol,
amou,<o,~
1
TOkn.
...----.
U O O O !________
set
600n.
MIC
JACK
TkHz
0.llmV
(-60d8)
Apply a I kHz, 0.
77m
V (- 60dB) signal
to
mic
jack
and place
the
set in
VOR
recording
mode
.
VOR
Board
(Side
A)
Adjust
the
tap
connection
to
obtain
normal sine
wave
on
the
oscilloscope.
If
the
adjustment
is
not
correctly
made
sine wave will be clipped.
Adjustment Location: BBD Board (Side A)
adjustment
tap
RED
0203
~
ct]
N
UN
TCM-SEV
VOR LED
Brightness Adjustment
power
supply voltage: 2.SV de
Procedure:
Place
the
set in
VOR
recording mode.
Adjust
the
resistance value so
that
the
VOR
LED
is
brighter
than
REC/BATT LED a little.
The
power
value
is
Skfl
- 1
0kfl
.
Adjustment
Location:
VOR
Board (Side A)
adjustment
resistor
Chip resistor (1/10W)
Resistance value Parts No.
5.
lk
1-216-066-00
5.6k
1-216-06 7-00
6.2k 1-216-068-00
6.8k
1-216-069-00
7.Sk 1-216-070-00
8.2k
1-216-071-00
9.
lk
1-216-072-00
!Ok 1-216-073-00
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