Display Test; Test Mode Structure; Electrical Adjustment - Sony MDX-C800REC Service Manual Supplement

TEST MODE
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.

DISPLAY TEST

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.

TEST MODE STRUCTURE

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.
2

ELECTRICAL ADJUSTMENT

ADJUSTMENT mode: SHUF indication off
PLAY mode: SHUF1
REC mode: SHUF2
Unused mode: SHUF ALL
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