Service Reference Guide, dc5100 376220-001 C–3
301-Keyboard Error Keyboard failure. Reconnect keyboard with computer
turned off.
Check connector for bent or missing
pins.
Ensure that none of the keys are
depressed.
Replace keyboard.
303-Keyboard
Controller Error
I/O board keyboard
controller.
Reconnect keyboard with computer
turned off.
Replace the system board.
304-Keyboard or
System Unit Error
Keyboard failure. Reconnect the keyboard with computer
turned off.
Ensure that none of the keys are
depressed.
Replace keyboard.
Replace system board.
501-Display Adapter
Failure
Graphics display
controller.
Reseat the graphics card (if applicable).
Clear CMOS.
Verify that the monitor is attached and
turned on.
Replace the graphics controller (if
applicable).
510-Splash Screen
image corrupted
Splash Screen image has
errors.
Install latest version of ROMPaq to
restore image.
511-CPU, CPUA, or
CPUB Fan not detected
Fan is not connected or
may have malfunctioned.
Reseat fan cable.
Reseat the fan.
Replace the fan.
512-Chassis, rear
chassis, or front chassis
fan not detected
Fan is not connected,
may have malfunctioned.
Reseat chassis, rear chassis, or front
chassis fan cable.
Reseat chassis, rear chassis, or front
chassis fan.
Replace chassis, rear chassis, or front
chassis fan.
514-CPU or Chassis
Fan not detected.
CPU fan is not connected
or may have
malfunctioned.
Reseat CPU or chassis fan.
Reseat fan cable.
Replace CPU or chassis fan.
601-Diskette Controller
Error
Diskette controller
circuitry or floppy drive
circuitry incorrect.
Run Computer Setup (F10 Setup).
Check and/or replace cables.
Clear CMOS.
Replace diskette drive.
Replace the system board.
POST Error Messages
Screen Message Probable Cause Recommended Action
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