IBM DS3500 Installation, User's, And Maintenance Manual page 182

Table 16. Troubleshooting (continued)
Problem indicator Component
Amber and green
LEDs are lit
All amber and
green LEDs are
slowly flashing
All green LEDs
are off
Amber LED is
flashing
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IBM System Storage DS3500 and EXP3500 Storage Subsystem: Installation, User's, and Maintenance Guide
Possible cause
Power supply
Power supply
failure
(Amber fault
LED is lit and
both power
LEDs are not
lit, AC power
or DC IN LED
is lit and DC
power or DC
out LED is not
lit)
Check for and solve one of the following situations:
All drives
v storage enclosures are not correctly connected to the
DS3500.
(activity and
v DS3500 does not have the correct firmware version.
fault LEDs are
not lit)
All components Subsystem power is
off
Power failure
Power-supply
failure
Operating
environment is too
hot
Drives (fault Drive identification
LED is lit) is in process
Possible solutions
Replace the failed power supply.
See Chapter 5, "Replacing
components," on page 105 for
more information.
Ensure that all storage subsystem
power cables are connected and
that the power-supply switches
are on. If applicable, ensure that
the main circuit breakers for the
rack are turned on.
Check the main circuit breaker
and ac receptacle (ac models).
Check the -48 V dc power source
and disconnect device (dc
models).
Replace the power supply.
Cool down the environment.
No corrective action is needed.