HP Tower Uninterruptible Power System - Manual (Page 130)

Troubleshooting 130
Action: Refer to the Microsoft Knowledge Base article 819760.
Task Bar menu does not clear
Symptom: The task bar menu does not clear when clicking off the menu onto the Windows desktop.
Possible Cause: This is a known Windows behavior.
Action: Start another application or open a new window, and the issue disappears.
Unable to discover a UPS
Action:
• Verify that the UPS is connected to the correct communications port (COM1, COM2, and so on).
• Verify that no other software or processes are accessing the communications port to which the UPS is
attached.
• Verify that you are using the communications cable that came with the UPS.
• Verify that resources for the selected communications port (such as I/O port or IRQ) are not shared with
other devices.
• Try a different communications port.
• Verify that the HPPP Administrator and Clients have permanent IP addresses.
UPS is not detected in RHEL5 when attached to serial
ports other than COM 1
Possible Cause: The IRQ in the operating system and RBSU differ.
Action: Manually change the serial port parameters in the operating system using the following command
with the same IRQ and base address that is assigned to the serial port in RBSU:
# setserial /dev/ttyS1 port 0x02f8, irq 3
This is the only way that communication will occur.
Utility alarm
Possible Cause: The utility input voltage is repeatedly outside the UPS operating range.
Action:
1. Check the HPPP event log files to obtain specific error information.
2. Check the input voltage and reconfigure the UPS. For more information about configuring the UPS, see
the UPS documentation.
-or-
Contact a qualified electrician to verify that the utility power is suitable for the UPS.
3. Rediscover the UPS so that HPPP reads the new nominal voltage and shows the correct limits on the
graphs.