DTK Computer Apex 386/40 User Manual page 86

5-1 Troubleshooting Procedure
If your system does not start up properly, run through the following
steps to isolate the problem.
Start your computer. Insert a startup disk if the system software is not
installed on your hard disk.
Power Supply Fan
If your power supply fan is not running, continue reading this section.
Otherwise, skip ahead to the next section.
Make sure the power cable is property connected between your sys-
tem unit and the grounded power outlet. If possible, substitute another
power cable which you are certain is in good working order. Otherwise,
check your existing power cable for breaks in the power line.
Noisy Fan
If the fan is making a lot of noise, turn off your system and inspect the
fan for obstructions in the way of the moving parts. If possible, remove
the fan obstructions. Turn on the system again. If the noise continues,
listen to the ball bearings inside the fan housing. If the noise is coming
from what appears to be a worn bearing, you may need to replace the
power supply. Consult your dealer or a technician for help.
Monitor Does Not Turn On
If your monitor does not appear to be working properly, continue
reading this section. Otherwise, skip ahead to the next heading.
Make sure the power cable is properly connected between your sys-
tem unit and the grounded power outlet. If possible, substitute another
power cable which you are certain is in good working order. Otherwise,
check your existing power cable for breaks in the power line.
Try substituting a monitor in good working condition for the one which
came with your system. If the substitute works properly, you may need
to replace your monitor. Consult your dealer or a qualified technician
for additional help.
2 Chapter 5: Troubleshooting