Power supply problems (continued)
Workstation powered off
automatically and the Power LED
flashes red two times, once every
second, followed by a two-second
Power LED flashes red, once every
Solving diskette problems
Diskette drive light stays on.
Drive not found.
Chapter 5 System diagnostics and troubleshooting
Processor thermal protection
A fan might be blocked or not
The CPU heatsink fan
assembly is not properly
attached to the processor.
Power failure (power supply is
Diskette is damaged.
Diskette is incorrectly inserted.
Files on diskette are damaged.
Drive cable is not properly
Cable is loose.
Removable drive is not seated
Be sure that the workstation air vents are not blocked
and the cooling fan is running.
Open the access panel, press the power button, and
determine if the processor fan spins. If the processor
fan is not spinning, be sure the fan's cable is plugged
into the system board header. Be sure the fan is
properly seated or installed.
Replace the processor fan.
Reseat the CPU heatsink, and verify that the fan
assembly is properly attached.
Determine whether a device is causing the problem
by removing all attached devices). Power on the
system. If the system enters the POST, then power
off and replace one device at a time and repeat this
procedure until failure occurs. Replace the device
causing the failure. Continue adding devices one at a
time to ensure all devices are functioning properly.
Verify power supply functionality.
Disconnect AC power.
Remove all internal power supply cables from
the system board.
Plug in AC power.
If the power supply fan spins and the BIST
LED lights, then the power supply is good.
Replace the system board.
If the power supply fan does not spin or the
BIST LED does not light, replace the power
Right-click Start, click Explore, and select a drive.
Select File>Properties>Tools. Under Error-checking,
click Check Now.
Remove diskette and reinsert.
Check the program diskettes.
Reconnect power cable. Be sure that all four pins are
Reseat diskette drive data and power cables.
Reseat the drive.