IBM XSERIES 255 TYPE 8685, Hardware Maintenance Manual And Troubleshooting Manual

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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 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 39.
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 3.
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 3.
DASD checkout
Note: See “System” on page 160 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 160 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.
Bus fault messages
Note: See “System” on page 160 to determine which components should be replaced by a field service technician.
Bus fault messages Message Action
Failure reading I2C device.
Check devices on bus 0.
1. If installed, reseat the I2C cable between the Remote
Supervisor Adapter (in PCI slot 1/J26) and the system board
(J16).
2. Memory DIMMs.
3. Memory card.
4. System board.
Failure reading I2C device.
Check devices on bus 1.
1. Reseat the cable between the operator information panel and
system board (J46).
2. Operator information panel.
3. System board.
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xSeries 255 Type 8685: Hardware Maintenance Manual and Troubleshooting Guide