Troubleshooting Procedures 5-13 Table 5-5 General Troubleshooting Procedures (continued)Memory malfunction 1. Check if the memory module is inserted proper ly.
2. Replace the memory module.
3. Replace the motherboard.
External keyboard or PS/2 mouse doesn’t
work 1. Check if the keyboard or t he 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 installati on for any IRQ
or I/O address conflict s.
2. Check if the PCMCIA card is inserted properl y
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 i s properly instal led.
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 dri ver is correctl y configured.
2. Check if serial devi ce is connected properly.
3. Replace serial device.
4. Check the I/O controller chi p on the motherboard
for any cold or loosed sol dering.
5. Replace the motherboard.
Parallel device does not work 1. Check if all connections are properl y set.
2. Check if external device i s turned on.
3. Check I/O controller chi p on the motherboard for
any cold or loose solderi ng.
4. Replace the motherboard.