MDX-C800REC (serv.man3) - Sony Car Audio Service Manual (repair manual). Page 2

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This set has the test mode functionality. The test mode should be
always set before performing adjustments.

<Setting the Test Mode>
1. Input the specified voltage (14.4 V) to the ACC and BATT

terminals.

2. “1:00” is displayed on the LCD display.
3. Press   4   key.
4. Press   5   key.
5. Press   1  key for more than 2 seconds.
6. All segments are lit on the LCD display entering the test mode.

<Releasing the Test Mode>
1. Press  OFF  key.

1. Once the test mode is set, each pressing of the  DSPL  key will

cause the LCD display to change as follows:

All segments ON

Press  DSPL  key.

Half segments ON (1)

Press  DSPL  key.

Half segments ON (2)
(The other half segments that were OFF in (1) are ON.)

Press  DSPL  key.

All segments OFF

Press  DSPL  key.

1. Set the test mode.
2. Insert a disc and press  5  key.
3. Each time  6  key is pressed, the mode will change as follows:

ADJUSTMENT mode “SHUF” indication off

Press  6  key.

PLAY mode “SHUF1” indication is lit.

Press  6  key.

REC mode “SHUF2” indication is lit.

Press  6  key.

Unused mode “SHUF ALL” indication is lit.

Press  6  key.

Key

Description of test

2

Laser power adjustment mode

3

Traverse adjustment mode

4

Focus bias adjustment mode

5

STOP

6

Switch the mode

ENTER

CLV jitter measurement

DSPL

Select the display

Key

Description of test

2

Laser power check mode

3

Focus + CLV ON

4

Tracking servo ON/OFF

5

STOP

6

Switch the mode

ENTER

CPLAY mode (middle/outer/inner area)

DSPL

Select the display

Key

Description of test

2

Laser power check mode

3

Focus + CLV ON

4

Tracking servo ON/OFF

5

STOP

6

Switch the mode

ENTER

CREC mode (middle/outer/inner area)

DSPL

Select the display