Xtreme Power Conversion Corporation
M90 & M90L Service Manual
Page 17
Uninterruptible Power Supply
Shutdown Mode
UPS Mode
Description
Shutdown Mode
A:Off, B:Off, C:Off, D:Off, E:Off, F:Off, G:Off
Trouble Shooting
This section describes how to find the troubles when UPS is abnormal. We suggest you to follow the service
procedure below:
1.
Check the UPS status via LED and LCD display, the sound of the buzzer and get the warning or fault code via
theRS232 if possible, otherwise listen to the description of end users.
2.
Inspect failure board for static checking.
3. Replace failure components.
4.
Static checking.
5. Power-on checking.
6.
Test after repair
Following section will help service person to solve the most problems.
LCD Panel Display Pattern Definition
Trouble shooting for warning icon in LCD display
Any warning display implies some abnormity happened to the UPS, indicating that some situation that may
endanger the reliability of the UPS has occurred, but these situations don’t immediately lead to interruption of
power supply.
