IBM ThinkPad G40 Hardware Maintenance Manual page 52

Product overview
FRU
CD-ROM or
DVD drive
Memory
Fan
48
ThinkPad G40
Applicable test
1. Diagnostics --> Other Devices -->
CD-ROM/DVD
2. Interactive Tests --> CD-ROM/DVD Test
1. If two DIMMs are installed, remove one of
them and run Diagnostics --> Memory
Test—Quick.
2. If the problem does not recur, return the
DIMM to its place, remove the other one,
and run the test again.
3. If the test does not detect the error, run
Diagnostics --> Memory Test—Full.
1. Turn on the computer and check the air
turbulence at the louver near the power
switch.
2. Run Diagnostics --> Other Devices -->
IBM Fan.