10
Mode Tension Meter Meter Reading
Forward CQ-403A 5.89 mN•m
more than 60 g
Reverse CQ-403R (more than 2.12 oz)
SECTION 3
MECHANICAL ADJUSTMENTS SECTION 4
ELECTRICAL ADJUSTMENTS
1. Clean the following parts with a denatured-alcohol-moistened
swab:
playback head pinch roller
rubber belt capstan
idler
2. Demagnetize the playback head with a head demagnetizer.
3. Do not use a magnetized screwdriver for the adjustments.
4. The adjustments should be performed with the power supply
voltage (14.4 V) unless otherwise noted.
•Torque Measurement
Mode Torque Meter Meter Reading
2.46 – 5.39 mN•m
Forward CQ-102C 25 – 55 g•cm
(0.35 – 0.76 oz•inch)
Forward 0.15 – 0.39 mN•m
Back Tension CQ-102C 1.5 – 4 g•cm
(0.02 – 0.06 oz•inch)
2.46 – 5.39 mN•m
Reverse CQ-102RC 25 – 55 g•cm
(0.35 – 0.76 oz•inch)
Reverse 0.15 – 0.39 mN•m
Back Tension CQ-102RC 1.5 – 4 g•cm
(0.02 – 0.06 oz•inch)
4.91 – 14.70 mN•m
FF, REW CQ-201B 50 – 150 g•cm
(0.69 – 2.08 oz•inch)
•TapeTension Measurement
TEST MODE
This set have the test mode function. In the test mode, FM Auto
Seek/Stop Level adjustment and MW Auto Seek/Stop Level Check
can be performed easier than it in ordinary procedure.
<Set the Test Mode>
1. Turn ON the regulated power supply. (All LEDs on the set
lights up, and the clock is displayed.)
Note: Press the [OFF] button, if the clock is not displayed.
2. Push the presett [4] button.
3. Push the preset [5] button.
4. Press the preset [1] button for more than two seconds.
5. Then the display indicates all lights, the test mode is set.
<Release the Test mode>
Push the [OFF] button.
See the adjustment location from on page 13 for the
adjustment.
TAPE DECK SECTION 0 dB= 0.775 V
1. The adjustments should be performed in the order given in
this service manual.
2. The adjustments should be performed for both L-CH and
R-CH.
TestTape
PB Head Azimuth Adjustment
Procedure:
1. Put the set into the FWD PB mode.
2. Turn the screw and check the output peak value. Adjust the
screw so that the peak value in channels L and R coincides
within 2 dB.
Type Signal Used for
P-4-A063 6.3 kHz, –10 dB head azimuth adjustment
WS-48A 3 kHz, 0 dB tape speed adjustment
screw
position
L-CH
peak
within
2 dB
output
level
L-CH
peak
R-CH
peak
within
2 dB
angl
R-CH
peak
level
meter
test tape
P-4-A063
(6.3 kHz, –10 dB)
set
AUDIO OUT jack (CN400
10 kΩ
+
–
w
w
w
.
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6
3
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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
