IBM eserver 630 6C4, Service Manual

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Hot-Swap Fan Assembly Replacement
Note: If a fan assembly is being replaced for a redundant failure, after the service
repair action is completed, ask the customer to check the crontab file for any
power/cooling warning messages. When a power or cooling error is encountered,
AIX adds an entry to the crontab file to
″
wall
″
a warning message every 12
hours, to alert or remind the customer of the problem. Replacing the faulty part
does not clear this crontab entry, so unless the crontab file is edited to remove
this entry, the customer continues to be reminded of the failure despite its having
been repaired. Use the crontab -l command to read the crontab file to
determine if an entry exists. Use the crontab -e command to edit the file.
The hot-swap fan removal section has a procedure for processor cooling fans and PCI
adapter cooling fans. Select the removal procedure according to the hot-swap fan
assembly you are servicing.
To replace your system’s hot-swap cooling fans, do the following:
Hot-Swap Processor Fan Replacement
When installing a hot-swap processor cooling fan, do the following:
1. Lift the processor fan access cover.
2. Place your thumb and index finger into the two holes located on the top of the
replacement fan.
3. Align the connector located on the fan assembly with the docking connector located
on the CEC backplane.
4. Insert the replacement fan and firmly press it into its docking connector.
5. Verify that the replaced cooling fan’s LED is not lit. If the fan LED is lit, reseat the
fan or the fan cable.
6. For proper cooling of the processor, ensure the processor cooling fan access cover
springs back to the closed position.
7. Replace the service access cover as described in “Service Access Cover
Replacement (Model 6C4)” on page 357 or “Service Access Cover Replacement
(Model 6E4)” on page 364.
8. On a Model 6C4, push the system drawer back into the operating position as
described in “Returning the Model 6C4 to the Operating Position” on page 356 and
close the rack doors.
On a Model 6E4, close the bezel door.
Chapter 9. Removal and Replacement Procedures
397