Table 10. Troubleshooting information (continued)
Component Problem indicator Possible cause Possible solutions
Some or all
components
Intermittent or
sporadic power loss
Defective ac or dc
power source or
partially connected
power cord
1. Check the ac or dc power source.
2. Secure all installed power cables and power
supplies.
3. If applicable, check the power components
(power supplies, uninterruptible power supply,
and so on).
4. Replace defective power cables.
Power-supply
failure
Check for a fault LED on the power supply and
replace the failed power supply. See “Checking the
LEDs” on page 73.
Midplane failure Contact your IBM technical-support representative.
Drives Unable to access any
drives
SAS cable
1. Make sure that the SAS cables are undamaged
and correctly connected.
2. Replace the cables.
ESM failure Contact your IBM technical-support representative.
Subsystem Random errors Midplane failure Contact your IBM technical-support representative.
134 System Storage DS3500 and EXP3500: Installation, User’s, and Maintenance Guide
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