User`s guide

When these circuits detect a high temperature, they shut off all

the DC outputs in the power supply and your computer stops

operating. This does not damage the power supply, but you

must remove the cause of the high temperature before you can

use your system again,

To restore normal power supply operation, follow these steps:

Turn off the computer and leave it off for at least

30 seconds to reset the power supply logic.

To determine the cause of the high temperature and correct

the condition, check for the following:

A blocked power supply fan. Make sure that nothing

blocks the power supply fan vents in the back of the

computer case. Check both inside and outside the

computer for blockage. Make sure there is ample room

around your system for air circulation.

Room temperatures of 95° F (35° C) or above. If this is

the case, move the computer to a cooler area.

An overload of the power supply limitations. Check the

table on page D-4 to see if you have exceeded the

option slot power limits. See your option card manual

for the power requirements of your card(s).

After you eliminate the problem causing the overheating,

allow the computer to cool down for at least five minutes at

a room temperature of about 78° F (25” C). This resets the

thermal detection circuits.

If you removed the computer’s cover, replace it now. Then

turn on the computer.

If the power supply shuts off again after you follow the steps

above to correct the problem, contact your dealer.

C-8 Troubleshooting