Denon DN-C680 Service Manual

5
5DN-C680
2. What is Service Program
Service program is a special program intended for confirming servo.
3. Contents of Service Program
While simultaneously pushing the STANDBY/CUE and PLAY/PAUSE buttons, turn the power on. (TRACK Indication “00”)
After actuating the service program, select an aiming process number with the SELECT KNOB, PITCH button, and TIME
button, and push the PLAY/PAUSE button to execute processing, The process number is then displayed on the TRACK
indication portion.
Work No.
(TRACK
Indication)
Function Contents
01 OPEN/CLOSE Performs OPEN/CLOSE each tome when the PLAY/PAUSE button is pushed.
02 Tracking Error Check tracking error signal, then performs the Automatic Adjustment.
03 HF Signal Check HF signal.
04
Automatic
Adjustment call
Turn the Search dial to display the Automatic adjustment data.
05
Cleaning of
Pick-up Lens
Tray opens and pick-up moves out of mechanism, and clean the lens.
06
Focus Gain Changing Select Gain with search dial. Press PLAY/PAUSE button, the display lights that will
be newly memory in EEPROM.
when select data becomes big or small, the Gain is up or down.
In normally, do not change the data that is setted by 750.0.
The set No. and frequency in the EEPROM are storred as below:
No. Frequency No. Frequency
(SEC indicator) (FRAME indicator) (SEC indicator) (FRAME indicator)
- 7 477 Hz 1 847 Hz
- 6 509 Hz 2 956 Hz
- 5 543 Hz 3 1079 Hz
- 4 579 Hz 4 1218 Hz
- 3 618 Hz 5 1375 Hz
- 2 659 Hz 6 1552 Hz
- 1 703 Hz 7 1753 Hz
0 750 Hz 8 1978 Hz
SELECT knob
07
Tracking Gain
Changing
Select Gain with Search dial. Press PLAY/PAUSE button, the display lights that will
be newly memory in EEPROM.
When select data becomes big or small, the Gain is up or down.
In normally, do not change the data that is setted by 1000.0.
When sound out is occured by oscillation, please raise gain.
But there is sound out easily by defective disc.
The set No. and frequency in the EEPROM are storred as below:
No. Frequency No. Frequency
(SEC indicator) (FRAME indicator) (SEC indicator) (FRAME indicator)
- 7 637 Hz 1 1129 Hz
- 6 679 Hz 2 1274 Hz
- 5 724 Hz 3 1439 Hz
- 4 772 Hz 4 1624 Hz
- 3 824 Hz 5 1834 Hz
- 2 879 Hz 6 2070 Hz
- 1 938 Hz 7 2337 Hz
0 1000 Hz 8 2638 Hz
PITCH 08 CHUCKING Test
Repeats OPEN/CLOSE of tray, servo ON, and TOC read and displays the number
of the tray OPEN/CLOSE times with the Time indicator.
TIME 09
Heat Run
(No Skip Check)
Repeats OPEN/CLOSE of tray, repeats playing the first and the last programs of
music on the disc. When an error occurs, displays error code and stops.
REPEAT 11 Error code check
Turn the search dial to display the logging error codes in the occurred order.
Kinds of displayed Error Code
(1) Error Code Table (Appears only at Heat Run and Chucking Test function)
(2) E204 Servo down during Cue
(3) E205 Servo down during pause
(4) E206 Servo down during manual search and scan
(5) E214 Unable to read the subcode during CUE
(6) E215
Unable to read the subcode during PAUSE
(7) E216 Unable to read the subcode during the manual serach and scan

Denon DN-C680 Specifications

General

Brand	Denon
Model	DN-C680
Category	CD Player
Language	English