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IBM ThinkPad T40 series Hardware Maintenance Manual

IBM ThinkPad T40 series
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Indicator Meaning
6 Caps lock
Green:
Caps Lock mode is enabled. To enable or
disable Caps Lock mode, press the Caps
Lock key.
7 Num lock
Green:
The numeric keypad on the keyboard is
enabled. To enable or disable the keypad,
press and hold the Shift key, and press the
NumLk (ScrLk) key.
8 Bluetooth
status
R
Green:
Bluetooth wireless is operational. This
indicator is on when Bluetooth wireless is on
and not in suspend mode.
9 Wireless
status
Green:
The wireless feature (the IEEE 802.11
standard) is on, and the radio link is ready
for use.
Blinking green:
Data is being transmitted.
FRU tests
The following table shows the test for each FRU.
FRU Applicable test
System board 1. Diagnostics --> CPU/Coprocessor
2. Diagnostics --> Systemboard
3. If the docking station or the port replicator
is attached to the ThinkPad computer,
undock it. Place the computer on a
horizontal surface, and run Diagnostics -->
Other Devices --> IBM HDD Active
Protection Test.
Note: Do not apply any physical shock to
the computer while the test is running.
Power Diagnostics --> Other Devices --> IBM AC
Adapter, IBM Battery 1 (IBM Battery 2)
LCD unit 1. Diagnostics --> Video Adapter
2. Interactive Tests --> Video
Modem
daughter card
(MDC or
BMDC)
1. Make sure the modem is set up correctly.
2. Replace the modem jack and the modem
card in turn, and run the following tests in
Diagnostics --> Communication:
a. Lucent Soft Modem Loopback
b. Lucent Soft Modem Dialtone
Audio 1. Interactive Tests --> Internal Speaker
2. Diagnostics --> Other Devices --> Analog
Devices AC97 CODEC Test
(continued)
Product overview
50 MT 2373/2374/2375/2376/2378/2379

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IBM ThinkPad T40 series Specifications

General IconGeneral
BrandIBM
ModelThinkPad T40 series
CategoryLaptop
LanguageEnglish

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