Lenovo ThinkPad 600E ThinkPad 600 Suppliment to the User's Guide - Page 115

Problem A number appears when you type a letter. All or some keys on the external numeric keypad do not work. All or some keys on the external keyboard do not work. Action The numeric lock function is on. To disable it, press and hold Shift; then press NumLk. Make sure that the external numeric keypad is correctly connected to the computer. 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