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Troubleshooting Procedures 5-13
Table 5-5 General Troubleshooting Procedures (continued)
Memory malfunction 1. Check if the memory module is inserted properly.
2. Replace the memory module.
3. Replace the motherboard.
External keyboard or PS/2 mouse doesn’t
work
1. Check if the keyboard or the mouse are
connected properly. Check if the Y-cable is being
used. Power off system first before plugging in
the device.
2. Replace the keyboard or mouse.
3. Replace the motherboard.
PCMCIA card does not work 1. Check the PCMCIA driver installation for any IRQ
or I/O address conflicts.
2. Check if the PCMCIA card is inserted properly
and all connections are set.
3. Replace the PCMCIA card.
4. Replace the motherboard.
Mouse doesn’t work 1. Check if PS/2 mouse driver is properly installed.
2. Check the keyboard controller chip for any cold or
loosed soldering.
3. Replace the motherboard.
Serial device does not work 1. Check if serial driver is correctly configured.
2. Check if serial device is connected properly.
3. Replace serial device.
4. Check the I/O controller chip on the motherboard
for any cold or loosed soldering.
5. Replace the motherboard.
Parallel device does not work 1. Check if all connections are properly set.
2. Check if external device is turned on.
3. Check I/O controller chip on the motherboard for
any cold or loose soldering.
4. Replace the motherboard.