IBM DS4800 User, Installation And Maintenance Manual page 184

Table 24. DS4800 Symptom-to-FRU index (continued)
Problem
indicator Component
Amber LED is Power supply-fan
on, green LED is
v Amber Needs
off, blue LED is
Attention LED
off, and Overall
on
DS4800 Storage
v Blue Service
Subsystem
Action Allowed
Needs Attention
LED off
LED is on
v Green Power
LED off
Interconnect-
battery unit
v Amber Battery
Needs
Attention LED
on the
interconnect-
battery unit is
on
v Green Battery
LED on the
power
supply-fan is
off
Interconnect-
battery unit
v Green Power
LED on
interconnect-
battery unit is
off
v Amber Battery
Needs
Attention LED
on the
interconnect-
battery unit is
on
RAID Controller
v Amber
Controller
Needs
Attention LED
is on
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IBM System Storage DS4800 Storage Subsystem: Installation, User's, and Maintenance Guide
Possible cause
v Power switch on a power
supply-fan unit is turned
off
v An electrical outlet circuit
breaker has been tripped
v There has been an AC
power failure
v The circuit breaker in the
RAID controller
associated with this PSF
has been tripped
Battery failure
Interconnect-battery unit
failure or midplane failure
Controller failure or
controller placed offline
Possible solutions
Check the power supply-fan unit power switches,
circuit breakers, and AC power source.
If none of these sources are the cause of the
fault, then do not replace the failed power
supply-fan unit until you have performed additional
diagnostics to determine why the Service Action
Allowed LED on the power supply-fan is not lit.
Call IBM Support if needed.
Verify the failure using DS4000 Storage Manger
Client and replace the failing battery.
Call IBM support.
Use DS4000 Storage Manager client software to
place the controller online. It the failure persists,
do not replace the controller unit. Instead, perform
additional diagnostics (such as checking the
power supply-fan components) to determine what
additional failures have caused the associated
Service Action Allowed LED on the controller not
to light.