XR-1300R, XR-2300R, XR-C2300R - Sony Car Audio Service Manual (repair manual). Page 12

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12
SECTION  3
MECHANICAL  ADJUSTMENTS
SECTION  4
ELECTRICAL  ADJUSTMENTS
Mode
Tension Meter
Meter Reading
Forward
CQ-403A
more than 5.89 mN•m
(more than 60 g)
Reverse
CQ-403R
(more than 2.12 oz)
• Tape Tension  Measurement
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
CQ-102C
(1.5 – 4 g•cm)
Back Tension
(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
CQ-102RC
(1.5 – 4 g•cm)
Back Tension
(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)
TEST  MODE
This set have the test mode function. In the test mode, FM Auto
Seek/Stop Level, FM RDS S-Meter adjustments 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 preset 
[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>
1. Push the 
[OFF]
 button.
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