XR-C5500T - Sony Car Audio Service Manual (repair manual). Page 9

9

Tape Speed Adjustment

– SET UPPER VIEW –

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.

Mode

Torque Meter

Meter Reading

 2.95 – 6.37 mN•m

Forward

CQ-102C

(30 – 65 g•cm)

(0.42 – 0.90 oz•inch)

Forward

0.05 – 0.44 mN•m

CQ-102C

(0.5 – 4.5g•cm)

Back Tension

(0.01 – 0.06 oz•inch)

2.95 – 6.37 mN•m

Reverse

CQ-102RC

(30 – 65 g•cm)

(0.42 – 0.90 oz•inch)

Reverse

CQ-102RC

0.05 – 0.44 mN•m

(0.5 – 4.5g•cm)

Back Tension

(0.01 – 0.06 oz•inch)

5.89 – 19.61 mN•m

FF, REW

CQ-201B

(60 – 200 g•cm)

(0.83 – 2.78 oz•inch)

Mode

Tension Meter

Meter Reading

more than 8.83 mN•m

Forward

CQ-403A

(more than 90 g)

(more than 3.18 oz)

more than 8.83 mN•m

Reverse

CQ-403R

(more than 90 g)

(more than 3.18 oz)

0 dB=0.775 V

Tuner section adjustments are done automatically in this set.

Procedure:
1. Put the set into the FWD PB mode.
2. Adjust adjustment resistor for inside capstan motor so that the

reading on the frequency counter becomes in 3,015 Hz.

Specified Value: 2,955 to 3,075 Hz

frequency counter

test tape 
WS-48A
(3 kHz, 0 dB)

set

AUDIO OUT REAR jack (J331)

–

+

10 k

Ω