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56 Chapter3
Troubleshooting
LCD Fan Failures and Warnings
Figure 3-5. Fan Locations
In the case of a fan problem, you will need to replace:
• The fan itself, if it is either a system board cooling fan, PCI (I/O) fan, or a memory fan.
• The entire system board tray assembly, if it is a turbo cooler fan (that is, a fan mounted
on a PA-8500 or PA-8700 microprocessor on the system board)
See Chapter 4 , “Field Replaceable Units,” for the procedures you should follow to remove
and replace these components.
PCI Card Fan (4)
Memory Fan
Upper System
Fan (2)
Lower System
Fan (3)
(6)
Turbo Cooler
Fan (5)