Lenovo ThinkPad T400s 2823 Hardware Maintenance Manual page 57

Table 1. FRU tests (continued)
FRU Applicable test
Power Diagnostics --> ThinkPad Devices --> AC Adapter, Battery 1
(Battery2)
LCD unit 1. Diagnostics --> Video Adapter
2. Interactive Tests --> Video
Audio Enter the BIOS Setup Utility and change Serial ATA (SATA) setting
to Compatibility, and run Diagnostics --> Other Device -->
Conexant Audio
Speaker Interactive Tests --> Internal Speaker
Note: Once Audio test is done, the no sound is heard this test. In
this case, turn off and turn on the computer. Then, run this test
again.
Keyboard 1. Diagnostics --> Systemboard --> Keyboard
2. Interactive Tests --> Keyboard
Hard disk drive or Enter the BIOS Setup Utility and change Serial ATA (SATA) setting
solid state drive to Compatibility, and run Diagnostics --> Fixed Disks
You can also diagnose the drive without starting up the operating
system. To diagnose the drive from the BIOS Setup Utility, do as
follows:
1. Remove any diskette from the diskette drive, and then turn off
2. Turn on the computer.
3. While the message, "To interrupt normal startup, press the
4. Using cursor keys, select HDD diagnostic program. Press
5. Using cursor keys, select Main hard disk drive or Ultrabay
6. Press Enter to start the diagnostic program.
Diskette drive 1. Diagnostics --> Diskette Drives
2. Interactive Tests --> Diskette
Optical drive 1. Diagnostics --> Other Devices--> Optical Drive
2. Interactive Tests --> Optical Drive Test
Memory 1. If two DIMMs are installed, remove one of them and run
2. If the problem does not recur, return the DIMM to its place,
Fan 1. Turn on the computer and check the air turbulence at the
2.
TrackPoint or pointing If the TrackPoint does not work, check the configuration as
device specified in the BIOS Setup Utility. If the TrackPoint is disabled,
select Automatic to enable it.
After you use the TrackPoint, the pointer may drift on the screen
for a short time. This drift can occur when a slight, steady
pressure is applied to the TrackPoint pointer. This symptom is not
a hardware problem. If the pointer stops after a short time, no
service action is necessary.
If enabling the TrackPoint does not correct the problem, continue
with the following:
v Interactive Tests --> Mouse
the computer.
blue ThinkVangate button," is displayed at the lower left of the
screen, press F1 to enter the BIOS Setup Utility.
enter.
hard disk drive.
Diagnostics --> Advanced Memory Tests.
remove the other one, and run the test again.
louver near the PC Card slot.
Run Diagnostics --> ThinkPad Devices --> Fan.
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