IBM XSERIES 255 TYPE 8685, Руководство по техническому обслуживанию и ремонту

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Note: See “System” on page 160 to determine which components should be replaced by a field service technician.
Message Action
System running non-redundant power
(level-noncritical; system does not have
redundant power)
1. Add another power supply.
2. Remove options from system.
3. System can continue to operate without redundancy protection if
steps 1 and 2 are not followed.
System under recommended voltage for x
(level-warning; indicated voltage supply
under nominal value; value for x can be +12,
-12, or +5)
1. Check connections to the power subsystem.
2. Power supply.
3. Power backplane.
System shutdown
Refer to the following tables when experiencing system shutdown related to voltage
or temperature problems.
Voltage related system shutdown
Note: See “System” on page 160 to determine which components should be replaced by a field service technician.
Message Action
System shutoff due to x current over
max value (level-critical; system drawing
too much current on voltage x bus)
v See “Power checkout” on page 35.
System shutoff due to x V over voltage
(level-critical; system shutoff due to x
supply over voltage)
1. Check the power-supply connectors
2. Power supply.
3. Power backplane.
System shutoff due to x V under voltage
(level-critical system shutoff due to x supply
under voltage)
1. Check the power-supply connectors.
2. Power supply.
3. Power backplane.
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 35.
2. Cycle ac on/off.
Temperature related system shutdown
Note: See “System” on page 160 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 39
″
.
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 39.
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 3.
Chapter 6. Symptom-to-FRU index
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