HCD-DP900D, MHC-DP900D - Sony Audio Service Manual (repair manual). Page 16

16

[VACS ON/OFF MODE]
• This mode is used to switch ON and OFF the VACS (Variable

Attenuation Control System).

Procedure:
Press three buttons  x  ,  ENTER  and  SPECTRUM  or  KARAOK
PON  simultaneously.

[REPEAT 5 LIMIT OFF MODE]
• This mode is used to enable infinite repetitions.

Normally, the number of repetitions allowed is 5.

Procedure:
1. Press   `/1  button to turn ON the power supply.
2. Set the function “DVD”.
3. Press three burtons  ENTER ,  DISC 3 , and  x  is simultaneously.
4. Infinite repetitions is enabled.
5. This state is maintained ( memorized ) until COLD RESET is

executed.

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

swab:

record/playback heads

pinch rollers

erase head

rubber belts

capstan

idlers

2. Demagnetize the record/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 rated power

supply voltage unless otherwise noted.

3.06 N • m to 6.96 N • m

31 to 71 g • cm

(0.43 – 0.98 oz • inch)

0.19 N • m to 0.58 N • m

2 to 6 g • cm

(0.02 – 0.08 oz • inch)

3.06 N • m to 6.96 N • m

31 to 71 g • cm

(0.43 – 0.98 oz • inch)

0.19 N • m to 0.58 N • m

2 to 6 g • cm

(0.02 – 0.08 oz • inch)

6.96 N • m to 14.02 N • m

71 to 143 g • cm

(0.98 – 1.99 oz • inch)

9.80 N • m

100 g or more

(3.53 oz or more)

9.80 N • m

100 g or more

(3.53 oz or more)

CQ-102C

CQ-102C

CQ-102RC

CQ-102RC

CQ-201B

CQ-403A

CQ-403R

FWD

FWD
back tension

REV

REV
back tension

FF/REW

FWD tension

REV tension