MECHANICAL ADJUSTMENTS. Sony CA410, XR-CA400

XR-CA400/CA410

SECTION 4

MECHANICAL ADJUSTMENTS

1. Clean the following parts with a denatured-alcohol-moistened swab: playback head pinch roller rubber belt idler capstan

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

Forward

Forward

Back Tension

Reverse

Reverse

Back Tension

FF, REW

CQ-102C

CQ-102C

CQ-102RC

CQ-102RC

CQ-201B

Meter Reading

2.95 – 6.37 mN•m

(30 – 65 g•cm)

(0.42 – 0.90 oz•inch)

0.05 – 0.44 mN•m

(0.5 – 4.5g•cm)

(0.01 – 0.06 oz•inch)

2.95 – 6.37 mN•m

(30 – 65 g•cm)

(0.42 – 0.90 oz•inch)

0.05 – 0.44 mN•m

(0.5 – 4.5g•cm)

(0.01 – 0.06 oz•inch)

5.89 – 19.61 mN•m

(60 – 200 g•cm)

(0.83 – 2.78 oz•inch)

• Tape Tension Measurement

Mode Tension Meter

Forward CQ-403A

Reverse CQ-403R

Meter Reading more than 60 g

(more than 2.12 oz) more than 60 g

(more than 2.12 oz)

SECTION 5

ELECTRICAL ADJUSTMENTS

TAPE DECK SECTION

0 dB=0.775 V

Tape Speed Adjustment

Setting: test tape

WS-48A

(3 kHz, 0 dB) set

10 k

Ω frequency counter

+

–

AUDIO OUT REAR jack (CNJ151)

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 3,000 Hz.

Specification: Constant speed

Frequency counter

2,955 to 3,075 Hz

Adjustment Location:

– SET UPPER VIEW –

Tape Speed Adjustment

TUNER SECTION

Tuner section adjustments are done automatically in this set.

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