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The Service Guide of
VM92
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4
1. The Unit can not be powered on.
1) Check whether there is a fuse in the filter box of power 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. 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.
