IBM 87302RU, Hardware Maintenance Manual

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Power modules
AC in LED
DC out LED
DC in LED
Error LED
AC power module DC power module
DC out LED
Error LED
Power module LEDs: Each power module has three LEDs to indicate the status of
the power module.
v
AC (or DC) in: When continuously lit, this green LED indicates that the input
power source is working. If the LED is not lit, it indicates that the input power
source is not present or is incorrect.
v DC out: When continuously lit, this green LED indicates that the output power is
present. If the LED is not lit, it indicates that the output power is not present.
v
! (Error): When continuously lit, this amber LED indicates that there is a error
condition within the power module.
Table 3. Power module LEDs
DC IN or AC IN DC OUT
! (Error)
(amber) Description and action
On On Off The power module is on and operating
correctly.
On Off Off or On* There is an output power problem. A system
error has shut down the power module.
Actions: Determine the cause of the shutdown
using the diagnostics and replace the failed
component. When the fault has been cleared,
reset the power module in one of the following
ways:
v Issue a power-module reset through the
management module.
v
Remove the power module from the unit for
at least 10 seconds.
If the problem remains, have the unit serviced.
*Error LED will operate only if a redundant
power supply is installed.
Chapter 1. General information
13