ServerNet Cluster 6770 Hardware Installation and Support Guide

Troubleshooting
ServerNet Cluster 6770 Hardware Installation and Support Guide—522544-002
8-11
Monitoring a UPS
Using OSM or TSM Alarms to Monitor the UPS
Several OSM and TSM alarms provide diagnostic and troubleshooting information
about the UPS. Refer to Checking Alarms on page 8-3. If an alarm indicates a
problem with an UPS, also check the LEDs on the UPS and the cable connections to
the UPS.
Using the LEDs to Monitor the UPS
The front panel of the UPS contains 16 LEDs that provide information about the UPS.
The LED numbers are not displayed on the front panel.
Note. As shown in Figure 8-5, the LEDs are numbered beginning with number 1 in the upper
right corner, and the sequence of the numbers moves from right to left.
LED Function For Details, refer to:
1 through 4 AC input voltage and site wiring
Table 8-5 on page 8-13
5 No function Table 8-5
on page 8-13
6 through 10 Status of the battery in the UPS
Table 8-6 on page 8-14
11 through 14 Load level
Table 8-7 on page 8-15
15 No function Table 8-8
on page 8-16
16 Indicates whether power is
available to a ServerNet II
Switch
Table 8-9
on page 8-16