Digital Equipment DECstation 5000/100 Series, Maintenance Manual

Page: 118 / 392

No
WS33M084
Turn off the system unit power.
Remove the system unit
cover.
Yes
Turn on the system unit power.
Do any fans rotate?
Do all three fans rotate?
No
Make sure that there are no obstructions
near the power supply. If the system
still overheats, replace the power supply.
Yes
Does the power
supply still overheat?
No
End
Yes
Replace the power supply. Refer to
"Removing and Installing the Power
Supply" in Chapter 5 for directions.
Make sure that the fan assembly power
cord is connected. Refer to figure 4-14
to see how the cord connects. If the fan
assembly power cord is connected
correctly, replace the power supply.
Refer to "Removing and Installing the
Power Supply" in Chapter 5 for directions.
Replace the power supply
fan assenbly. Refer to
"Removing and Installing the
Power Supply Fan Assembly"
in Chapter 5 for instructions.
End
End
Figure 4-13. Troubleshooting if the system unit overheats
4–40 Identifying Failed FRUs