— 7 —
SECTION 4
MECHANICAL ADJUSTMENT
SECTION 5
ELECTRICAL ADJUSTMENT
PRECAUTION
1. Clean the following parts with a denatured-alcohol-moistened
swab:
playback head pinch roller
rubber belts capstan
2. Do not use a magnetized screwdriver for the adjustments.
Torque Measurement
Mode
FWD
FWD
Back Tension
FF, REW
Torque Meter
CQ-102C
CQ-102C
CQ-201B
Meter Reading
20 to 42 g•cm
(0.27 to 0.58 oz•inch)
More than 2.0 g•cm
(More than 0.027 oz•inch)
More than 50 g•cm
(More than 0.69 oz•inch)
TAPE SECTION
Signal
3 kHz, 0 dB
Used for
Tape speed adjustment
Tape
WS-48A
Test Tape
Tape Speed Adjustment
Procedure:
Mode: Playback
Adjustment Value: normal tape speed
Adjust the tape speed adjustment RV601, so that the freqency counter
reading becomes 3,000Hz.
Specification Value:
Frequency difference between the beginning and the end of the tape
should be within 1.5 % (45 Hz).
Adjustment Location:
Test tape
WS-48A
(3 kHz, 0 dB)
Set
J301 (phones)
16
Ω
digital frequency
counter
+
–
Digital frequency counter
2,970 to 3,030 Hz
0 dB = 0.775 V
RV601
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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