IBM UPS 7500XHV User Manual
18
6: T
ROUBLESHOOTING
Use the chart below to solve minor uninterruptible power supply installation and operation problems. Refer to IBM for assis-
tance with complex uninterruptible power supply problems.
tance with complex uninterruptible power supply problems.
P
ROBLEM AND
P
OSSIBLE
C
AUSE
S
OLUTION
UNINTERRUPTIBLE POWER SUPPLY WILL NOT TURN ON
The uninterruptible power
supply is not connected to the
utility power supply.
supply is not connected to the
utility power supply.
Check that the power cord from the uninterruptible power supply to the util-
ity power supply is securely connected at both ends.
ity power supply is securely connected at both ends.
The batteries are not con-
nected properly.
nected properly.
Check that the battery connectors are fully engaged.
There is very low or no utility
voltage.
voltage.
Check the utility power supply to the uninterruptible power supply by plug-
ging in a table lamp. If the light is very dim, have the utility voltage
checked.
ging in a table lamp. If the light is very dim, have the utility voltage
checked.
UNINTERRUPTIBLE POWER SUPPLY WILL NOT TURN OFF
There is an internal uninter-
ruptible power supply fault.
ruptible power supply fault.
Do not attempt to use the uninterruptible power supply. Unplug the uninter-
ruptible power supply and have it serviced immediately.
ruptible power supply and have it serviced immediately.
UNINTERRUPTIBLE POWER SUPPLY BEEPS OCCASIONALLY
The uninterruptible power
supply beeps when running on
battery during normal opera-
tion.
supply beeps when running on
battery during normal opera-
tion.
None. The uninterruptible power supply is protecting the connected equip-
ment from occasional utility power irregularities.
ment from occasional utility power irregularities.
UNINTERRUPTIBLE POWER SUPPLY IS NOT PROVIDING EXPECTED BACKUP TIME
The uninterruptible power
supply battery is weak due to
a recent outage or is near the
end of its service life.
supply battery is weak due to
a recent outage or is near the
end of its service life.
Charge the battery. Batteries require recharging after extended outages, and
wear faster when frequently put into service or when operated at elevated
temperatures. If the battery is near the end of the service life, consider re-
placing the battery even if the replace battery LED is not yet lit.
wear faster when frequently put into service or when operated at elevated
temperatures. If the battery is near the end of the service life, consider re-
placing the battery even if the replace battery LED is not yet lit.
ALL LEDS ARE LIT AND THE UNINTERRUPTIBLE POWER SUPPLY EMITS A CONSTANT BEEPING
There is an internal uninter-
ruptible power supply fault.
ruptible power supply fault.
Do not attempt to use the uninterruptible power supply. Turn off the uninter-
ruptible power supply and have it serviced immediately.
ruptible power supply and have it serviced immediately.
FRONT PANEL LEDS FLASH SEQUENTIALLY
The uninterruptible power
supply has been shut down
remotely through software.
supply has been shut down
remotely through software.
None. The uninterruptible power supply will restart automatically when
utility power returns.
utility power returns.
ALL LEDS ARE OFF AND THE UNINTERRUPTIBLE POWER SUPPLY IS PLUGGED INTO A WALL OUTLET
The uninterruptible power
supply is shut down or the
battery is discharged from an
extended outage.
supply is shut down or the
battery is discharged from an
extended outage.
None. The uninterruptible power supply will return to normal operation
when the power is restored and the battery has a sufficient charge.
when the power is restored and the battery has a sufficient charge.