Mediana YM6000, Руководство по обслуживанию

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50 Troubleshooting
YM6000 Service Manual
4. Display pixels do not light.
4 ‐ 1 Check the connection of the main board.
4 ‐ 2 If the problem persists, replace the LCD cable.
4 ‐ 3 If the problem still persists, replace the main board.
4 ‐ 4 If the problem still persists, replace the LCD assembly.
Sound
The followings are symptoms of problems and recommended actions relating to
sound. If the action requires replacement of a PCB assembly or module, refer to
Disassembly Guide .
1. Alarm sounds for no apparent reason.
1 ‐ 1 Moisture or spilt liquids can cause an alarm not to sound. Allow the monitor
to dry thoroughly before using.
1 ‐ 2 If the problem persists, replace the main board.
2. Audible alarm does not sound.
2 ‐ 1 Check alarm silence status.
2 ‐ 2 Check alarm volume setting in Setup menu.
2 ‐ 3 Ensure the speaker is connected to the power supply assembly.
2 ‐ 4 If problem persists, replace speaker.
2 ‐ 5 Check the main cable between main PCB and the power supply assembly.
2 ‐ 6 If problem persists, replace the power supply assembly.
2 ‐ 7 If problem persists, replace the main board.
3. The monitor responds to button press, but key press tone fails to sound.
3 ‐ 1 Check the key beep volume setting in Setup menu.
3 ‐ 2 Ensure speaker is connected to main the power supply assembly.
3 ‐ 3 If problem persists, replace speaker.
3 ‐ 4 Check the main cable between the main board and the power supply
assembly.
3 ‐ 5 If problem persists, replace the power supply assembly.
3 ‐ 6 If problem persists, replace the main board.