— 8 —
SECTION 4
ADJUSTMENTS
4-1. MECHANICAL ADJUSTMENTS
PRECAUTION
1. Clean the following parts with a denatured-alcohol-moistened
swab :
playback head rubber belts
capstan pinch roller
2. Demagnetize the playback head with a head demagnetizer.
3. Do not use a magnetized screwdriver for the adjustments.
4. After the adjustments, apply suitable locking compound to the
parts adjusted.
5. The adjustments should be performed with the rated power
supply voltage (1.3V) unless otherwise noted.
Torque Measurement
Mode Torque Meter
Meter Reading
CQ-201B
more than 60 g • cm
FWD
FWD
Back Tension
CQ-102C
REV
CQ-102RC
REV
Back Tension
FF
REW
0.5 — 3 g • cm
18 — 33 g • cm
0.5 — 3 g • cm
18 — 33 g • cm
Type
WS-48A
Signal
Used for
3 kHz, 0 dB
Tape Speed Adjustment
16
frequency
counter
+
–
REMOTE jack
set
Test Tape
WS-48A
(3kHz, 0dB)
4-2. ELECTRICAL ADJUSTMENTS
TAPE SECTION
PRECAUTION
1. Power supply voltage : 1.3V.
2. Switch position
DOLBY NR switch : OFF
EX DBB switch : NORM
Test Tape
TAPE SPEED ADJUSTMENT
Procedure :
1. Play back WS-48A (tape center portion) in FWD mode.
Adjust the RV601 so that the frequency counter reads 3,000 ±
30 Hz.
2. Play back WS-48A (tape center portion) in REV mode.
Confirm that the reading of frequency counter is within 2.5%
from the reading in step 1.
Adjustment Part Location Diagram :
[MAIN BOARD] (SIDE A)
RV601
ND701
w
w
w
.
x
i
a
o
y
u
1
6
3
.
c
o
m
Q
Q
3
7
6
3
1
5
1
5
0
9
9
2
8
9
4
2
9
8
T
E
L
1
3
9
4
2
2
9
6
5
1
3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com
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