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System Components
Operation The operation of a UPS after power failure is as follows.
Seconds after
power failure
Warning
After 150 seconds, Information Centers, Clients, and the Server must be manually
restarted following proper restart procedure.
Note
Power failure and restoration messages also appear in the Event Log.
2-26
Hardware Description
4
3
1
2
S4: DOWN
S3: UP
S2: DOWN
S1: UP
120V UPS
Figure 2-27 Rear Panel DIP Switch Settings for 120V and 230V UPSs
0
Line power fails and UPS goes to battery power. Philips systems continue to
run, but displays will be blank (no power).
If line power returns during this 90-120 second period, normal operation is
restored automatically.
90-120
The Operating System begins a system shutdown and Philips application
software ends.
120-150
The UPS shuts off power to the device. The UPS then typically beeps every 5
seconds until power is restored or the UPS is turned off.
When line power is restored, the UPS automatically supplies power to the
device.
If line power is restored between 90 and 120-150 seconds after power failure,
the following English language message may appear.
It is now safe to turn off your computer.
Clicking on RESTART initiates a software boot cycle, after which normal
Information Center operation resumes.
Action
4
2
1
3
S4: DOWN for 50 Hz
UP for 60 Hz
S3: DOWN
S2: DOWN
S1: UP
230V UPS
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Troubleshooting
