4-14 Maintenance and Troubleshooting
Table 4-4 Problems and Solutions
Problem
Symptom
Solution
Hard disk
malfunction
Hard disk drive lamp does not
light but hard disk drive can
be accessed.
1. Check cable connections between
lamp and system board.
Hard disk controller failure
message displayed.
1. Check that the IDE port and hard disk
drives are enabled in Setup.
Cannot access hard disk.
1. Check signal/power connections
between hard disk, PCB, power supply.
2. Check drive jumper settings.
3. Check power supply.
4. Check hard disk cable and hard disk.
Replace as necessary.
5. Replace system board (or hard disk
controller PCB if the system board
controller is not used).
Memory
malfunction
Total memory is not
recognized.
1. Reseat SIMMs.
2. Systematically swap SIMMs.
3. Check to see if the SIMM configuration
is valid (see Section 3).
4. Replace SIMMs.
5. Replace system board.
Sound malfunction
No output from both the 8-bit
and 16-bit digitized sounds.
1. Check interrupts. Refer to Section 1 for
interrupt settings.
2. Check DMA channels. Refer to
Section 1 for DMA channel settings.
Keyboard or mouse
malfunction
Monitor has prompt, but
cannot input data.
1. Check that keyboard/mouse is plugged
in.
2. Check password (see Section 2).
3. Disable password (see Section 2).
4. Replace keyboard (or mouse).
5. Replace system board.
Содержание MT-2550-24874C
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