Hardware Maintenance Manual
Page 7
...565-3344 for replacing FRUs Before replacing parts Make sure that changed the symptoms. Attention: The setup configuration on the IBM support site http://www.ibm.com/pc/support Advise customers to replace a FRU but the replacement does not correct the problem, reinstall the original FRU... board, and replacing one FRU, any diskette fixes. v Some computers have been customized. Strategy for assistance or download information. The BIOS and device drivers are posted on the computer you are servicing may alter the settings. Replace only the FRU that all diskette fixes ...
...565-3344 for replacing FRUs Before replacing parts Make sure that changed the symptoms. Attention: The setup configuration on the IBM support site http://www.ibm.com/pc/support Advise customers to replace a FRU but the replacement does not correct the problem, reinstall the original FRU... board, and replacing one FRU, any diskette fixes. v Some computers have been customized. Strategy for assistance or download information. The BIOS and device drivers are posted on the computer you are servicing may alter the settings. Replace only the FRU that all diskette fixes ...
Hardware Maintenance Manual
Page 33
...removed. 5. Turn on the computer by the servicer: 1. When the Enter New Password field opens, leave it can be entered in the IBM BIOS Setup Utility. General descriptions 27 Remove the backup battery. Reinstall the backup battery and the battery pack. (B) If an SVP has been set... cursor keys to reset the password. Supervisor password: A supervisor password (SVP) protects the system information stored in order to get access to the IBM BIOS Setup Utility and make changes to remove the battery pack, see "1020 Backup battery" on page 60. 3. Turn off the computer. 2. Select...
...removed. 5. Turn on the computer by the servicer: 1. When the Enter New Password field opens, leave it can be entered in the IBM BIOS Setup Utility. General descriptions 27 Remove the backup battery. Reinstall the backup battery and the battery pack. (B) If an SVP has been set... cursor keys to reset the password. Supervisor password: A supervisor password (SVP) protects the system information stored in order to get access to the IBM BIOS Setup Utility and make changes to remove the battery pack, see "1020 Backup battery" on page 60. 3. Turn off the computer. 2. Select...
Hardware Maintenance Manual
Page 34
... standby mode in Windows 95 and Windows NT. Press F10; The IBM BIOS Setup Utility menu appears. 3. Press F10. 8. v Standby mode is called suspend mode in IBM BIOS Setup Utility expires, v The LCD backlight turns off . 28 ThinkPad T20, T21, T22, T23 (MT 2647/2648) v The hard-disk drive motor stops. Enter...Screen blank mode has three variants, as follows: 1. Select Master HDP. 6. The hard-disk drive can be made available to the servicer, IBM does not provide any services to reset the user HDPs or to move down the menu. 4. Both user HDP and master HDP will have ...
... standby mode in Windows 95 and Windows NT. Press F10; The IBM BIOS Setup Utility menu appears. 3. Press F10. 8. v Standby mode is called suspend mode in IBM BIOS Setup Utility expires, v The LCD backlight turns off . 28 ThinkPad T20, T21, T22, T23 (MT 2647/2648) v The hard-disk drive motor stops. Enter...Screen blank mode has three variants, as follows: 1. Select Master HDP. 6. The hard-disk drive can be made available to the servicer, IBM does not provide any services to reset the user HDPs or to move down the menu. 4. Both user HDP and master HDP will have ...
Hardware Maintenance Manual
Page 38
...use of the IBM BIOS Setup Utility before you run the test, do as the serial port. Note: When you initialize the computer configuration, some possible configurations of these devices, you will need to "Product overview" on page 35, and check the power sources. 32 ThinkPad T20, T21, T22, T23 (MT 2647.../2648) Insert the PC-Doctor disk into the diskette drive; Verify the symptoms. Try to re-create the failure by repeating the operation. Instead of the computer. If the computer cannot be used to test only IBM products. For ...
...use of the IBM BIOS Setup Utility before you run the test, do as the serial port. Note: When you initialize the computer configuration, some possible configurations of these devices, you will need to "Product overview" on page 35, and check the power sources. 32 ThinkPad T20, T21, T22, T23 (MT 2647.../2648) Insert the PC-Doctor disk into the diskette drive; Verify the symptoms. Try to re-create the failure by repeating the operation. Instead of the computer. If the computer cannot be used to test only IBM products. For ...
Hardware Maintenance Manual
Page 39
...it , use the audio device test in the Other Devices in the IBM BIOS Setup Utility, Diskette Drives test is activated even if no legacy diskette drive is attached to the ThinkPad. v Wireless LAN test and 802.11 Wireless Radio Test is needed to be held down menu appears. (Its ...of PC-Doctor appears. 3. Quick v Keyboard v Video v Internal Speaker v Mouse v Joystick Test v Diskette v System Load v CD-ROM/DVD Test v Stereo Speaker v 802.11 Wireless Radio Test(*) Notes: v In the Keyboard test in the Interactive Tests. Follow the instructions on page 49. Checkout guide If an error code...
...it , use the audio device test in the Other Devices in the IBM BIOS Setup Utility, Diskette Drives test is activated even if no legacy diskette drive is attached to the ThinkPad. v Wireless LAN test and 802.11 Wireless Radio Test is needed to be held down menu appears. (Its ...of PC-Doctor appears. 3. Quick v Keyboard v Video v Internal Speaker v Mouse v Joystick Test v Diskette v System Load v CD-ROM/DVD Test v Stereo Speaker v 802.11 Wireless Radio Test(*) Notes: v In the Keyboard test in the Interactive Tests. Follow the instructions on page 49. Checkout guide If an error code...
Hardware Maintenance Manual
Page 56
...security chip has failed. device that you installed; System board. 021x Keyboard error Run interactive tests of them. Load Setup Defaults in IBM BIOS Setup Utility. 3. DIMM. 2. Symptom-to ignore the warning message. 2. through a security gate 0195 Security hardware tamper detected 1. ...fails at offset nnnn. 1. System board. 50 ThinkPad T20, T21, T22, T23 (MT 2647/2648) Reseat the hard-disk drive. 2. Enter IBM BIOS Setup Utility by entering supervisor password, and select "Password" --> "IBM Security Chip" --> "Clear IBM Security Chip" to continue. System board. 0231 ...
...security chip has failed. device that you installed; System board. 021x Keyboard error Run interactive tests of them. Load Setup Defaults in IBM BIOS Setup Utility. 3. DIMM. 2. Symptom-to ignore the warning message. 2. through a security gate 0195 Security hardware tamper detected 1. ...fails at offset nnnn. 1. System board. 50 ThinkPad T20, T21, T22, T23 (MT 2647/2648) Reseat the hard-disk drive. 2. Enter IBM BIOS Setup Utility by entering supervisor password, and select "Password" --> "IBM Security Chip" --> "Clear IBM Security Chip" to continue. System board. 0231 ...
Hardware Maintenance Manual
Page 57
... System board. 1. DIMM. 2. System board. Load Setup Defaults in sequence 1. DIMM. 2. System board. ThinkPad T20, T21, T22 and T23 series 51 Replace the backup battery and run IBM BIOS Setup Utility to reset the time and date. Diskette drive. 2. DIMM. 2. Symptom-to-FRU index Symptom or...Fail-safe timer NMI failed FRU or action, in IBM BIOS Setup Utility. 2. Reset the password by running IBM BIOS Setup Utility. 1. External FDD cable. 3. I/O card. 1. System board. 1. Replace the backup battery and run IBM BIOS Setup Utility to reset the time and date. 2....
... System board. 1. DIMM. 2. System board. Load Setup Defaults in sequence 1. DIMM. 2. System board. ThinkPad T20, T21, T22 and T23 series 51 Replace the backup battery and run IBM BIOS Setup Utility to reset the time and date. Diskette drive. 2. DIMM. 2. Symptom-to-FRU index Symptom or...Fail-safe timer NMI failed FRU or action, in IBM BIOS Setup Utility. 2. Reset the password by running IBM BIOS Setup Utility. 1. External FDD cable. 3. I/O card. 1. System board. 1. Replace the backup battery and run IBM BIOS Setup Utility to reset the time and date. 2....
Hardware Maintenance Manual
Page 58
... data. Backup battery. 3. Backup battery. 3. Diskette drive. 6. Operating system not found. System board. 1. System board. 52 ThinkPad T20, T21, T22, T23 (MT 2647/2648) Allocation error for device. I/O device IRQ conflict. FRU or action, in IBM BIOS Setup Utility. 2. Reseat the hard-disk drive. 4. Thermal sensing error. System board. 1. DIMM. 2. Load "Setup Defaults" in...
... data. Backup battery. 3. Backup battery. 3. Diskette drive. 6. Operating system not found. System board. 1. System board. 52 ThinkPad T20, T21, T22, T23 (MT 2647/2648) Allocation error for device. I/O device IRQ conflict. FRU or action, in IBM BIOS Setup Utility. 2. Reseat the hard-disk drive. 4. Thermal sensing error. System board. 1. DIMM. 2. Load "Setup Defaults" in...
Hardware Maintenance Manual
Page 59
... beeps, pause, three more short beeps, and one short beep. DIMM. 3. appears. The DOS full screen looks smaller. ThinkPad T20, T21, T22 and T23 series 53 System board. 2. Operating system starts successfully. System board One short beep, pause, three short beeps, pause, three...or a supervisor password is connected tightly and correctly. 2. Beep symptoms Symptom-to-FRU index Symptom or error FRU or action, in IBM BIOS Setup Utility is disabled. Reseat the LCD connector. 2. The hard-disk password prompt A hard-disk password is set the Screen expansion ...
... beeps, pause, three more short beeps, and one short beep. DIMM. 3. appears. The DOS full screen looks smaller. ThinkPad T20, T21, T22 and T23 series 53 System board. 2. Operating system starts successfully. System board One short beep, pause, three short beeps, pause, three...or a supervisor password is connected tightly and correctly. 2. Beep symptoms Symptom-to-FRU index Symptom or error FRU or action, in IBM BIOS Setup Utility is disabled. Reseat the LCD connector. 2. The hard-disk password prompt A hard-disk password is set the Screen expansion ...