IBM TotalStorage DS4000 Hardware Maintenance Manual page 130

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IBM TotalStorage DS4000: Hardware Maintenance Manual
Table 48. Symptom-to-FRU index for DS4500 RAID controller (continued)
Problem
Software issued a controller
error message.
Software errors occur when
attempting to access
controllers or drives.
Fan LED (front cover) is on.
Controller and Fan fault
LEDs (front cover) are on.
Fault-A or Fault-B LED
(battery CRU) is on.
Full Charge-A or Full
Charge-B LED (battery
CRU) is off.
No power to controller (all
power LEDs off).
Power Supply LED is off.
Power Supply CRUs LED
are on, but all other CRU
LEDs are off.
Action/FRU
1. Check Controller Fan
2. Controller CRU
1. Check appropriate software and documentation to
make sure the system is set up correctly and the proper
command was run.
2. Power to the Controller
3. Interface cables
4. ID settings
5. Controller
6. Drive
7. Controller backpanel
1. Power supply fan CRU
2. Controller fan CRU
1. Check both Fan and Controller CRUs for fault LED and
replace faulty CRU.
1. Battery CRU
1. Power-on Controller and allow batteries to charge for
24 hours until the Full Charge LEDs are on.
2. Battery CRU
3. Both power supplies
1. Check power switches and power cords.
2. Power supplies
1. Check and reseat power supply.
2. Check for overheating. Wait ten minutes for the power
supply CRU to cool down.
3. Power supply CRU
1. DC power harness