IBM eServer xSeries 235 Type 8671, Maintenance & Troubleshooting

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Note: See “System” on page 156 to determine which components should be replaced by a field service technician.
Message Action
System shutoff due to VRM x over
voltage
v Replace VRM x .
System shutoff due to excessive (< 240
VA) loading
1. See “Power checkout” on page 36.
2. Cycle ac on/off.
Temperature related system shutdown
Note: See “System” on page 156 to determine which components should be replaced by a field service technician.
Message Action
System shutoff due to board over
temperature
(level-critical; board is over
temperature)
1. Ensure that the system is being properly cooled ; see “System
reliability considerations” on page 41
″
.
2. Replace board.
System shutoff due to CPU x over
temperature
(level-critical; CPU x is over
temperature)
1. Ensure that the system is being properly cooled ; see “System
reliability considerations” on page 41.
2. Replace CPU x .
System shutoff due to CPU x under
temperature (level-critical; CPU x is under
temperature)
v Ambient temperature must be within normal operating
specifications
; see “Features and specifications” on page 2.
System shutoff due to DASD temperature
(sensor
x ) (level-critical; DASD area
reported temperature outside recommended
operating range)
v Ensure that the system is being properly cooled ; see “System
reliability considerations” on page 41.
System shutoff due to high ambient
temperature
(level-critical; high ambient
temperature)
v Ambient temperature must be within normal operating
specifications
; see “Features and specifications” on page 2.
System shutoff due to system board
under temperature
(level-critical; system
board is under temperature)
v Ambient temperature must be within normal operating
specifications
; see “Features and specifications” on page 2.
DASD checkout
Note: See “System” on page 156 to determine which components should be replaced by a field service technician.
Message Action
Hard drive x removal detected
(level-critical; hard drive x has been
removed)
v Information only, take action as appropriate.
Host built-in self test (BIST)
Note: See “System” on page 156 to determine which components should be replaced by a field service technician.
Message Action
Host fail (level-informational; built-in
self-test for the host failed)
1. Reseat the microprocessor.
2. Reseat the VRM.
3. Replace the microprocessor CPU.
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xSeries 235 Type 8671: Hardware Maintenance Manual and Troubleshooting Guide