8
8
DN-C635
SERVICE PROGRAM
Required Measuring Implement
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Reference disc (TCD784 or CO-74176)
1. What is Service Program
Service program is a special program intended for confirming servo functions etc.
2. µcom Version Check
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Refer to "Preset Functions and Operations" of the instruction manual.
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You can check the µcom version.
3. Error Data Check
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Switch on the power while pushing the
button and REPEAT button at the same time.
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After actuating the error data check program, press the CD's
or
button to display the logging error codes
in the occurred order.
XX Err**
XX: occurred order
Err**: error code (Refer to the "Error Code Table" Page 9.)
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10 error logs are memorized at maximum. Item 1 is newest data. Item 10 is oldest data. Item 2 is the 9th old data.
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Pressing the PAUSE button enters to data erase mode. ("Err Clear?" is displayed.)
If the PAUSE button is pressed again, the memorized error data are cleared.
To cancel the data erase mode, press the STOP button.
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To stop the Error Data check mode, please turn off the POWER switch.
NOTE:
When the service is finished, delete the error logs.
4. Total Running Time
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Switch on the power while pushing the PROG. PLAY ON/OFF button and A-B button at the same time.
Total time span of CD that counted by the hour is displayed.
CD XXXXh
NOTE:
Time is counted if the disc tray is opened first 30 minutes.
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Pressing the PAUSE button enters to data erase mode. ("Time Clear?" is displayed.)
If the PAUSE button is pressed again, the memorized time data are cleared.
To cancel the data erase mode, press the STOP button.
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To stop the Total Running Time check mode, please turn off the POWER switch.
NOTE:
When the replacing the associated parts, delete the ranning time.
5. B.E.R. Checks and Automatic Servo Adjustment Call
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Switch on the power while pushing the
button and END MON button at the same time.
And Loading a disc by OPEN/CLOSE button.
(1)Block Error Rate
Press the PLAY button. B.E.R. is displayed.
01Tr **m XXXX
XXXX: Block Error Rate
You can select the track by the select knob.
(2)Tracking balance and Focus balance data
Press the TIME button. Tracking balance and Focus balance data is displayed.
2 ±XXX±@@@
XXX: Tracking balance
@@@: Focus balance
(3)Focus gain data
Press the END MON button. Focus gain data is displayed.
3 XXXX
XXXX: Focus gain
(4)Tracking gain data
Press the REPEAT button. Tracking gain data is displayed.
4 XXXX
XXXX: Tracking gain
(5)Tracking offset and Focus offset data
Press the A-B button. Tracking offset and Focus offset data is displayed.
5 ±XXX±@@@
XXX: Tracking offset
@@@: Focus offset
(6)Press the PLAY MODE button to select the Block Error Rate data.
(7)To stop the B.E.R. Check and Automatic Servo Adjustment Call mode,
please turn off the POWER switch.
No. botton
Adjustment Item
Adjustment Value indicator
Tracking Balance
-025 ~ +025
Focus Balance
-050 ~ +050
3
Focus Gain
0576 ~ 2304
4
Tracking Gain
0392 ~ 1569
Tracking Offset
-005 ~ +005
Focus Offset
-005 ~ +005
2
5
