Mechanical Adjustment; Electrical Adjustment - Sony TCS-100DV Service Manual

QQ

MECHANICAL ADJUSTMENT

3 7 63 1515 0
1. Clean the following parts with a denatured-alcohol-moistened
swab:
playback/rec/erase head
rubber belts
idler
2. Demagnetize the playback 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. The adjustments should be performed with the rated power
supply voltage (1.3 V) unless otherwise noted.
Torque Measurement
Mode
FWD
CQ-102C
FWD
Back Tension
REV
CQ-102RC
REV
Back Tension
FF, REW CQ-201B
TE
L 13942296513
www
.
http://www.xiaoyu163.com
SECTION 4
PRECAUTION
pinch roller
capstan
Torque Meter Meter Reading
1.57-2.45 mN•m
(16 – 25 g•cm)
(0.23 – 0.34 oz•inch)
0.05-0.14 mN•m
(0.5 – 1.5 g•cm)
(0.007 – 0.02 oz•inch)
1.57-2.45 mN•m
(16 – 25 g•cm)
(0.23 – 0.34 oz•inch)
0.05-0.14 mN•m
(0.5 – 1.5 g•cm)
(0.007 – 0.02 oz•inch)
more than 4.91 mN•m
(more than 50 g•cm)
(more than 0.7 oz•inch)
x ao
y
i
http://www.xiaoyu163.com

ELECTRICAL ADJUSTMENT

8
1. Specified voltage
2. Setting
SPEED CONTROL dial
0 dB=0.775 V
Test tape
Type
WS-48A
Tape Speed Adjustment
Setting:
test tape
WS-48A
(3 kHz, 0 dB)
Procedure:
– Normal –
[REC TIME]
1. Set the
2. Playback WS-48A (tape center) in the FWD state.
3. Adjust RV602 so that the frequency counter reading becomes
3,000 Hz.
Specified Value: 2,970 to 3,030 Hz
Q Q
3 6 7 1 3
4. Check that deflection of the frequency counter reading between
the beginning and the end of tape is within 1.5% (approx. 45
Hz).
– Double (1/2 SPEED) –
[REC TIME]
1. Set the
2. Playback WS-48A (tape center) in the FWD state.
3. Adjust RV603 so that the frequency counter reading becomes
1,500 Hz.
Specified Value: 1,485 to 1,515 Hz
Adjustment Location:
– MAIN BOARD (Conductor Side) –
J301
RV603 Tape Speed (Double) Adjustment
RV602 Tape Speed (Normal) Adjustment
u163
.
– 11 –
SECTION 5
2 9 9 4 2 8
PRECAUTION
: 1.3 V (DC)
: center click
Signal
3 kHz, 0 dB Tape Speed Adjustment
frequency counter
32 Ω
+
set
–
i jack (J301)
[NORMAL]
switch (S1) to
1 5 0 5 8 2 9 9 4
[DOUBLE]
switch (S1) to
m
co
9 9
Used for
position.
2 8 9 9
position.