EXR-C205, XR-C340 - Sony Car Audio Service Manual (repair manual). Page 15

– 15 –

1. Clean the following parts with a denatured-alcohol-moistened
swab:

playback head

pinch roller

rubber belt

capstan

idlers

2. Demagnetize the playback head with a head demagnetizer.
3. Do not use a magnetized screwdriver for the adjustments.
4. After the adjustments, apply suitable locking compound to the
parts adjusted.
5. The adjustments should be performed with the power supply
voltage unless otherwise noted.

•

Forward

CQ-403A

more than 90 g

(more than 3.18 oz)

Reverse

CQ-403R

more than 90 g

(more than 3.18 oz)

•

set

+

–

test tape
WS-48A
(3 kHz, 0 dB)

speaker out terminal

4 

Ω

speed checker

or

frequency counter

Procedure:
1. Put the set into the FWD PB mode.

–1.5 to +2.5%

2,955 to 3,075 Hz

Specification: Constant speed

– SET  UPPER  VIEW –

TAPE  SPEED  Adjustment

Forward

CQ-102C

30–65 g•cm

(0.42–0.90 oz•inch)

Forward

CQ-102C

0.5–4.5 g•cm

Back Tension

(0.01–0.06 oz•inch)

Reverse

CQ-102RC

30–65 g•cm

(0.42–0.90 oz•inch)

Reverse

CA-102RC

0.5–4.5 g•cm

Back Tension

(0.01–0.06 oz•inch)

FF, REW

CQ-201B

60–200 g•cm

(0.83–2.78 oz•inch)