Goldmaster 7080 Service manual

SERVICE MANUAL

V1.0

SPECIFICATION

Power requirement 12 V DC car battery (negative earth)

DV-7513

Dimensions Approx 165mm×178mm×50mm (W/H/D)

Operating temperature -10 ~+℃ 60℃
Storage temperature -30 ~ +80℃℃
Operational humidity 45%~80%RH
Atmosphere pressure 860mbar~1060mbar

TABLE OF CONTENTS

1. GENERAL___________________________________________ 2-3

2. SERVICE GUIDE _____________________________________ 4-8

3. EXPLODING DRAWING _______________________________ 9-13

The Service Guide of DV-7513

1. The Unit can not be powered on.

1) Check whether there is a fuse in the filter box of po wer line or whether the fuse
has been blown.

2) If the unit can not be powered on yet, change the power line.

3) If the unit still can not be powered on, you should check whether the reset button
is pushed down by the front panel.

4) If the unit can not be powered on yet after the above operation, you should
change the mainboard part.

2. No display

1) Check whether the connection of video output is right.

2) If there is no display yet, change the video output line.

3) If there is no display yet, change the mainboard part.

4) If there is no display after the above operation, you should change the video
driver board part.

3. Shut down automatically

1) Check whether the power supply is accord with the specification.

2) Check whether the fuse in the filter box of the power line has been blown.

3) Check whether the ACC is connected to the high level (The ACC is connected to
the battery generally).

4) If the trouble is still not solved yet, check the connection between the front panel
and the mainboard. If necessary, change the connector.

5) If the unit shuts down automatically yet after the above operation, you should
change the mainboard part.

4. No audio output

1) Check whether the MUTE key is pressed.

2) Check whether the Fast Forward key or the Fast backward key is pressed.

3) Check whether now playing has audio.

4) Change the audio output line.

5) If there is no audio output yet, change the mainboard part.

6) If the trouble is not solved yet after the above operation, change the loader part.

5. CDC /XM function failure

1) Check whether the CDC /XM is work normally.

2) Change the CDC /XM connector.

3) If the CDC /XM function is viod yet, change the mainboard part.

6. AUX-IN function failure

1) Check whether the AUX-IN input line is available.

2) If the AUX-IN function is viod yet, change the mainboard part.

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7. TV/NAVI function failure

1) Check whether the connection is right.

2) the TV/NAVI function is viod yet, change the mainboard part.

8. IPOD function failure

1) Check whether the connection is right.

2) Make sure the ipod is ok,especially the connector.

3) If the function is viod yet, change the ipod line.

4) If the function is viod yet, change the mainboard part.

9. The fan can not work normally.

1) Check whether the power supply is turned on.

2) Check whether the power socket of the fan is connected firmly.

3) Chang a good fan.

4) If the fan can not turn yet after the above operation, chang the mainboard.

10. The color of TFT is abnormal

1) Check whether the video output of rear zone is normal.

2) If the video output of rear zone is normal, that is to say the decode works
normally, and you should check the connection between the mainboard and the
TFT unit.

3) If the video output of rear zone is abnormal, change the mainboard part.

4) If the color of TFT is abnormal yet after the above operation, change the video
driver board part.

11. White screen

1) Check the connection between the loader and the mainboard, the mainboard
and the power supply board of TFT, the power supply board of TFT and the TFT.

2) If the trouble is still not solved, change the power supply board of TFT.

3) If the trouble is still not solved after the above operation, change the Display
part.

12. Black screen(No display in the TFT)

1) Check the connection between the loader and the mainboard, the mainboard
and the power supply board of TFT, the power supply board of TFT and the TFT.

2) Check whether the background lights are illumed. If not, change the CCFL
board.

3) If there is no display in the TFT, change the display part.

4) If there is still no display in the TFT after the above operation, change the
mainboard part.

13. Blue screen

1) Check whether the video output of rear zone is normal.

2) Check whether the source can normally change. And have sound output

3) If yes,check the reverse detect line.

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4) If not, change the mainboard part.

5) If not yet, change the video driver board part.

14. The icon of MUTE displays in the TFT at all times

1) Check whether there is any audio output.

2) If the audio output is normal, change the mainboard part. If the trouble is still not
solved, change the display part.

3) If the audio output is abnormal, change the mainboard part. If the trouble is still
not solved, change the loader part.

15. Beeper function failure

1) Check whether the beeper has turn off in the setup option.

2) Change the beeper.

3) If the trouble is not solved yet, change the mainboard part.

16. Key function failure

1) Check whether the key in the front panel is available.

2) Check the connection between the front panel and the mainboard. If necessary,
change the FFC connector.

3) If the key in the front panel is void, change the front panel part.

17. Remote controller function failure

1) Check whether the key in the front panel is valid.

2) If the key in the front panel is valid,that is to say the mainboard works normally.
Check whether the battery of the remote controller is available or change
another one good.

3) If the key in the front panel is viod, you should check the connection between the
front panel and the mainboard. If necessary, change the FFC conector.

4) If the trouble is still not solved yet, change the front panel.

5) If the trouble is still not solved yet, change the mainboard part.

18. No display in the LCD

1) Make sure the TFT unit is colsed.

2) If there is no display in the LCD also, you should change the LCD board.

19. Display in the LCD is abnormal

1) Check the connection between the mainboard and keypad .

2) If the display of LCD is abnormal, you should change the LCD board.

20. No volume display in the TFT

1) Check whether the volume knob is available.

2) Check whether there is volume display in the TFT using the remoter controller to
adjust the volume.

3) If there is volume display in the TFT using the remoter controller to adjust the
volume, that is to say the display part and the mainboard part work normally, you
should change the front panel part.

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4) If there is no volume display in the TFT using the remoter controller to adjust the
volume, change the mainboard part.

5) If the trouble is still not solved yet, change the display part.

21. The picture of playback is not fluent

1) Check whether the disc is dirty, scratched or deformed.

2) Check whether the lens of pick-up is dirty and clean it.

3) If the picture of playback is not fluent yet, you should change the loader part.

22. Loading failure

1) Check whether the disc you want playback is accord with the specification.

2) Check the connection between the pick-up mechanism and the servo&MPEG
board. If necessary, chang the loader part.

23. Can not insert one disc

1) Check whether there is another disc in the unit.

2) Check the connection between the loader part and the mainboard part. If
necessary, change the connector.

3) If the trouble still exists, change the loader part.

4) If the trouble is still not solved after the above operation, change the mainboard
part.

24. Can not eject the disc

1) Check the connection between the front panel and the mainboard.

2) Check the connection between the mainboard and the loader.

3) If the trouble is still not be solved, chang the loader.

4) If the trouble is still not be solved after changing the loader, change the
mainboard.

25. Eject the disc automatically

1) Check the connection between the loader and the mainboard.

2) If the trouble still exists, change the loader.

3) If the trouble is not solved yet after changing the loader, you should change the
mainboard.

Addenda

The system block diagram of DV-7510

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