Lenovo ThinkPad 600, User Manual

Page: 115 / 221

Problem Action
A number appears when
you type a letter. The numeric lock function is on. To disable it, press and hold Shift; then press
NumLk.
All or some keys on the
external numeric keypad
do not work. Make sure that the external numeric keypad is correctly connected to the
computer.
All or some keys on the
external keyboard do not
work. To use an external keyboard, you need to attach the keyboard/mouse cable to
the computer. Make sure that:
The keyboard/mouse cable is correctly connected to the computer.
The keyboard cable is connected to the correct side of the keyboard/mouse
cable.
If these items are correct, disconnect the keyboard/mouse cable from the
computer and make sure that the operation of the system keyboard is correct. If
the system keyboard works, have the keyboard/mouse cable or the external
keyboard serviced.
Suspend or Hibernation Problems
Problem Action
The computer enters
suspend mode
automatically. The computer enters suspend mode automatically when the processor
temperature reaches a certain level. This is not a defect.
|
Performance degrades
|
when the computer gets
|
hot during use.
|
The processor speed might decrease under the following conditions:
|
Use in a hot environment
|
High-powered processing that requires high-power consumption
|
This is not a defect.
The computer enters
suspend mode
immediately after POST
(the suspend LED turns
on). Make sure that:
The battery pack is charged.
The operating temperature is within the acceptable range. Refer to the
User's Reference.
If these items are correct, have the computer serviced.
Error
19
appears and the
computer immediately
turns off.
The battery pack power is getting low. Connect the AC Adapter to the
computer, or replace the battery pack with a fully charged one.
Chapter 7. Solving Computer Problems
109