IBM totalstorage 326, Справочник пользователя

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Table 22. Storage unit troubleshooting table (continued)
Problem Indicator Component Possible Cause Possible Solutions
All green LEDs off All CRUs Subsystem power
is off
1. Check that all expansion
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
failure Replace the power supply.
Midplane failure Have the expansion unit
serviced.
Amber LED flashing Drive CRUs Drive rebuild or
identity is in
process No corrective action
needed.
One or more green
LEDs off Power supply
CRUs Power cord
unplugged or
switches turned
off Make sure the cord is
plugged in and the switches
are turned on.
All drive CRUs Midplane failure Have the midplane replaced
(service technician only).
Several CRUs 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).
Front panel Power supply
problem Make sure the cords are
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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Model 326 User’s Reference