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120
Model 326 User's Reference
Table 22. Storage unit troubleshooting table (continued)
Problem Indicator
Component
All green LEDs off
All CRUs
Amber LED flashing
Drive CRUs
One or more green
Power supply
LEDs off
CRUs
All drive CRUs
Several CRUs
Front panel
Possible Cause
Possible Solutions
Subsystem power
1. Check that all expansion
is off
unit power cords are
plugged in and the
power switches are on.
2. If applicable, check that
the main circuit breakers
for the rack are turned
on.
AC power failure
Check the main circuit
breaker and AC outlet.
Power supply
Replace the power supply.
failure
Midplane failure
Have the expansion unit
serviced.
Drive rebuild or
No corrective action
identity is in
needed.
process
Power cord
Make sure the cord is
unplugged or
plugged in and the switches
switches turned
are turned on.
off
Midplane failure
Have the midplane replaced
(service technician only).
Hardware failure
Replace the affected CRUs.
If this does not correct the
problem, have the ESM
boards replaced, followed
by the midplane (service
technician only).
Power supply
Make sure the cords are
problem
plugged in and power
supplies are turned on.
Hardware failure
If any other LEDs are on,
replace the midplane
(service technician only).
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Troubleshooting
