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