XR-C2600 - Sony Car Audio Service Manual (repair manual). Page 10

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)

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

2.46 – 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)

This set have the test mode function. In the test mode, FM Auto
Seek/Stop Level and AM Auto Seek/Stop Level Check can be per-
formed 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.)

 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.

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.

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

Ω