Read Sony TC-TX313 / TC-TX515 Service Manual online
– 13 –
PRECAUTION
1. Clean the following parts with a denatured-alcohol-moistened
swab :
record/playback/erase head
pinch roller
rubber belts
capstan
idlers
2. Demagnetize the record/playback/erase head with a head
demagnetizer. (Do not bring the head demagnetizer close to the
erase head.)
erase head.)
3. Do not use a magnetized screwdriver for the adjustments.
4. After the adjustments, apply suitable locking compound to the
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 Measurement
Mode
Torque Meter
Meter Reading
35 – 80 g • cm
FWD
CQ-102C
(0.49 – 1.11 oz • inch)
FWD
1 – 7 g • cm
Back tension
(0.012 – 0.097 oz • inch)
35 – 80 g • cm
REV
CQ-102RC
(0.49 – 1.11 oz • inch)
REV
1 – 7 g • cm
Back tension
(0.012 – 0.097 oz • inch)
more than 40 g • cm
FF, REW
CQ-201B
(more than 0.56 oz • inch)
SECTION 5
ELECTRICAL ADJUSTMENTS
SECTION 4
MECHANICAL ADJUSTMENTS
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
• Switch position
DOLBY NR switch : OFF
DIRECTION switch : A
DIRECTION switch : A
Standard Input Level
Input terminal
TAPE IN
source impedance
10 k
Ω
input signal level
0.49 V (– 4 dB)
Standard Output Level
Output terminal
TAPE OUT (L-CH)
load impedance
47 k
Ω
output signal level
0.49 V (– 4 dB)
Test Tape
Type
Signal
Used for
P-4-A100
10 kHz, –10 dB
Azimuth Adjustment
P-4-L300
315 Hz, 0 dB
PB Level Adjustment
WS-48A
3 kHz, 0 dB
Tape Speed Adjustment
0 dB = 0.775 V
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