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7-8 Troubleshooting
Problems and Solutions
Problem Symptom Solution
Diskette drive does
not work
Lamp on drive panel does not light
when diskette is loaded.
1. Check power and signal cable
connections between diskette drive and
power supply.
2. Check diskette drive cable. Replace as
necessary.
3. Check power supply.
4. Replace diskette drive.
5. Replace system board.
Hard drive
malfunction
Hard drive lamp does not light but
hard drive can be accessed.
1. Check cable connections between lamp
and system board.
Hard drive controller failure
message displayed.
1. Check that the IDE channel and hard
drives are enabled in Setup (see Section 2).
Cannot access hard drive. 1. Check signal/power connections
between hard disk, PCB, power supply.
2. Check hard drive jumper settings.
3. Check power supply.
4. Check hard drive cable and hard drive.
Replace as necessary.
5. Replace system board (or hard drive
controller PCB if the system board
controller is not used).
Memory malfunction Total memory not recognized. 1. Reseat DIMMs.
2. Systematically swap DIMMs.
3. Check to see if the DIMM configuration
is valid (see Section 4).
4. Replace DIMMs.
5. Replace system board.
Modem board
malfunction
No output from board. 1. Check interrupts (see Section 2).
2. Check DMA channels (see Section 4).
Keyboard or mouse
malfunction
Monitor has prompt, but cannot
input data using keyboard or
mouse.
1. Check keyboard/mouse plugged in.
2. Check password (see Section 2).
3. Disable password (see Section 2).
4. Replace keyboard (or mouse).
5. Replace system board.