Chapter 4. Solving Problems; Troubleshooting - IBM TotalStorage 200 Installation And User Manual

Chapter 4. Solving problems

This chapter contains information to help you solve some of the simpler problems
you might have with your storage unit. It contains the problem symptoms and error
messages along with suggested actions to take to resolve the problem.
This chapter also provides instructions on how to obtain service and technical
assistance for your storage unit and other IBM products that you might plan to use.
Note: To acquaint yourself with product warranty information, see "Appendix C.

Troubleshooting

You can use these charts to find solutions to problems that have definite symptoms.
Problem Component Possible
indicator
Amber LED on Drive CRU
ESM board
Front panel
Amber LED on Power-
and green LED supply
off CRUs
Amber and Power-
green LEDs on supply
CRUs
All green LEDs All CRUs
off
Amber LED Drive CRUs Drive rebuild
flashing
Power
supply CRU
Amber LED on Power
and green dc supply CRU
power LED off
© Copyright IBM Corp. 2001
Product warranties" on page 41.
Possible solutions
cause
Drive failure Replace the failed drive. See "Replacing hot-swap drives" on
page 22.
Board failure Replace failed board. See "Replacing an ESM board" on page 25.
General Indicates that a Fault LED somewhere on the storage unit has been
machine fault turned on. Check for amber LEDs and CRUs. See "Rear controls,
indicators, and connectors" on page 5
Power is Turn on all power supplies. See "Rear controls, indicators, and
turned off connectors" on page 5.
Power supply Replace the failed power supply CRU. See "Replacing an ESM
failure board" on page 25.
The storage Check that all storage unit power cables are plugged in and the
unit is turned power is on. If applicable, check that the main circuit breakers for the
off rack are turned on.
If the external switch 1 is set to Off, the SCSI controller must be
cabled to the storage unit and turned on. See "External option
switches" on page 11.
AC power Check the main circuit breaker and ac outlet.
failure
Power supply Replace the power supply CRU. See "Removing a hot-swap power
failed supply/fan unit" on page 26.
Midplane Have the storage unit serviced.
failure
No corrective action is needed.
or identity is
in process
Fan failure Replace the power supply CRU.
Power supply If the power switch is on, replace the power supply CRU. See
failure "Removing a hot-swap power supply/fan unit" on page 26.
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