IBM xSeries 230 61Y, Hardware Maintenance Manual

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Notes:
1. If you suspect a software mismatch is causing failures (solid or intermittent), be
sure to see “Using the SCSISelect utility program” on page 37.
2. A corrupt CMOS can cause undetermined problems.
Check the LEDs on all the power supplies, see“Power supply LED errors” on page
133. If the LEDs indicate the power supplies are working correctly, return here and
do the following:
1. Power-off the computer.
2. Be sure the system is cabled correctly.
3. Remove or disconnect the following (one at a time) until you find the failure
(power-on the computer and reconfigure each time).
Any external devices
Surge suppressor device (on the computer)
Modem, printer, mouse, or non-IBM devices
Each adapter
Drives
Memory-Modules (Minimum requirement = 512 MB (4x128 MB DIMMs))
Note: Minimum operating requirements are:
a. 1 Power Supply
b. Power Backplane
c. System Board
d. 1 Microprocessor and VRM
e. 3 Terminator Cards
f. Memory Module (with a minimum of 1 bank of 128 MB DIMMs)
4. Power-on the computer. If the problem remains, suspect the following FRUs in
the order listed:
Power Supply
Power Backplane
System Board
Notes:
1. If the problem goes away when you remove an adapter from the system, and
replacing that adapter does not correct the problem, suspect the System Board.
2. If you suspect a networking problem and all the system tests pass, suspect a
network cabling problem external to the system.
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Hardware Maintenance Manual: xSeries 230 Models 6RY, 61Y