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7

In the CD test mode, the set works as following sequence.

Press the  u (CD)

Press the  u (CD)

Press the  u (CD)

Press the  x (CD)

Press the  u (CD)

Press the  x (CD)

Press the  x (CD)

Press the  x (CD)

Press the  u (CD)

1. Press  the 

[EJECT   ]

 button  twice to disc tray open and close.

(All servo ON)

2. Press the

>

and

.

button to move the optical pick-up

to position of the track where signal is recorded.

1. Press the

u

button to enter the FOCUS mode and display

as below. (Focus servo ON. CLV-S, tacking and sled servo
OFF)

2. Connect an oscilloscope to TP (TE) and TP (VC) on the BD

board.

3. Confirm the traverse level and center value of waveform sat-

isfy specified value as follows.

Specified value:
traverse level A: more than 350 mVp-p
center value B : 0 ± 50 mV

F

*  *  *  *

B

A

Z

 TRACKING GAIN UP mode is not used in servicing.

1. Press the

?/1

button to turn the power ON.

2. Press the 

[EJECT  ]

 button to open the disc tray, and put a

disc.

3. Press the 

[EJECT   ]

button to close the disc tray.

4. Press the

?/1

button to turn the power OFF.

5. While pressing the both

x

(TAPE) and

x

(CD) buttons,

press the 

[CD]

 (function) button.

6. Enter the CD test mode, and display as below for a few sec-

onds.

Lights up “STEREO” indication

: LPC ON

Does not light up “STEREO” indication: LPC OFF
*) LPC: Laser power control

7. Then display as below, and enter the STOP mode.

AUTO

F

*  *  *  *

STEREO

*  *  *  *

STEREO

Z

Z

8

2000K0572-1

Printed in Japan  

C

 2000. 11

1. Press the

u

button to enter the ALL SERVO ON mode and

display as below. (All servo ON)

2. Connect an oscilloscope to TP (RF) and TP (VC) on the BD

board.

3. Confirm the RF level of waveform satisfy specified value as

follows.

Specified value:
RF level: 1 

±

 0.3 Vp-p

1. Press the

u

button to enter the LPC OFF mode and display

as below. (LPC OFF)

2. Confirm the RF level of waveform is the same as the RF level

in “4. ALL SERVO ON mode”.
If the RF level is down from the RF level in “4. ALL SERVO
ON mode”, measure again after clean the object lens by an
applicator with lens cleaning liquid.

1. Press the

x

(CD) button to stop rotate the disc.

2. Press the

?/1

button to release the CD test mode and turn the

power OFF.

P L

*  *  *  *

STEREO

±

P L

*  *  *  *

8

2000K0572-1

Printed in Japan  

C

 2000. 11

1. Press the

u

button to enter the ALL SERVO ON mode and

display as below. (All servo ON)

2. Connect an oscilloscope to TP (RF) and TP (VC) on the BD

board.

3. Confirm the RF level of waveform satisfy specified value as

follows.

Specified value:
RF level: 1 

±

 0.3 Vp-p

1. Press the

u

button to enter the LPC OFF mode and display

as below. (LPC OFF)

2. Confirm the RF level of waveform is the same as the RF level

in “4. ALL SERVO ON mode”.
If the RF level is down from the RF level in “4. ALL SERVO
ON mode”, measure again after clean the object lens by an
applicator with lens cleaning liquid.

1. Press the

x

(CD) button to stop rotate the disc.

2. Press the

?/1

button to release the CD test mode and turn the

power OFF.

P L

*  *  *  *

STEREO

±

P L

*  *  *  *

8

2000K0572-1

Printed in Japan  

C

 2000. 11

1. Press the

u

button to enter the ALL SERVO ON mode and

display as below. (All servo ON)

2. Connect an oscilloscope to TP (RF) and TP (VC) on the BD

board.

3. Confirm the RF level of waveform satisfy specified value as

follows.

Specified value:
RF level: 1 

±

 0.3 Vp-p

1. Press the

u

button to enter the LPC OFF mode and display

as below. (LPC OFF)

2. Confirm the RF level of waveform is the same as the RF level

in “4. ALL SERVO ON mode”.
If the RF level is down from the RF level in “4. ALL SERVO
ON mode”, measure again after clean the object lens by an
applicator with lens cleaning liquid.

1. Press the

x

(CD) button to stop rotate the disc.

2. Press the

?/1

button to release the CD test mode and turn the

power OFF.

P L

*  *  *  *

STEREO

±

P L

*  *  *  *