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SECTION 5
QQ
MECHANICAL ADJUSTMENTS
3 7 63 1515 0
PRECAUTION
1. Clean the following parts with a denatured-alcohol-moistened
swab :
record/playback/erase head
rubber belts
idlers
2. Demagnetize the record/playback/erase head with a head
demagnetizer. (Do not bring the head demagnetizer close to the
erase head.)
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 unless otherwise noted.
Torque Check
Mode
Torque Meter
FWD
CQ-102C
FWD
Back tension
REV
CQ-102RC
REV
Back tension
FF, REW
CQ-201B
TE
L 13942296513
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pinch roller
capstan
Meter Reading
35 – 80 g • cm
(0.49 – 1.11 oz • inch)
1 – 7 g • cm
(0.014 – 0.097 oz • inch)
35 – 80 g • cm
(0.49 – 1.11 oz • inch)
1 – 7 g • cm
(0.014 – 0.097 oz • inch)
more than 40 g • cm
(more than 0.56 oz • inch)
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SECTION 6
ELECTRICAL ADJUSTMENTS
2 9
8
PRECAUTION
1. The adjustment should be performed in the publication.
(Be sure to male playback adjustment at first.)
2. The adjustments and measurement should be performed for both
L-CH and R-CH.
• Switch position
DOLBY NR switch : OFF
DIRECTION switch : A
Standard Input Level
Input terminal
source impedance
input signal level
Standard Output Level
Output terminal
load impedance
output signal level
Test Tape
Type
Signal
P-4-A100
10 kHz, –10 dB
P-4-L300
315 Hz, 0 dB
WS-48A
3 kHz, 0 dB
0 dB = 0.775 V
Q Q
3
6 7
1 3
1 5
co
.
9 4
2 8
TAPE IN
10 kΩ
0.49 V (– 4 dB)
TAPE OUT (L-CH)
47 kΩ
0.49 V (– 4 dB)
Used for
Azimuth Adjustment
PB Level Adjustment
Tape Speed Adjustment
0 5
8
2 9
9 4
2 8
m
9 9
9 9
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