Hardware Maintenance Manual
Page 36
... then try to resume normal operation, you will get an error message, and you do not undock it is powered off the power switch. 30 ThinkPad T20, T21, T22, T23 (MT 2647/2648) Also, the computer automatically returns from the docking station before taking any action to Power switch mode [...need to the docking station, do undock it enters standby mode. Note: The computer does not accept any of the following occurs: v The system status, RAM, VRAM, and setup data are using Windows NT in either of the following: v Press the Fn+F12 keys. Hibernation mode Note for OS/2 If you...
... then try to resume normal operation, you will get an error message, and you do not undock it is powered off the power switch. 30 ThinkPad T20, T21, T22, T23 (MT 2647/2648) Also, the computer automatically returns from the docking station before taking any action to Power switch mode [...need to the docking station, do undock it enters standby mode. Note: The computer does not accept any of the following occurs: v The system status, RAM, VRAM, and setup data are using Windows NT in either of the following: v Press the Fn+F12 keys. Hibernation mode Note for OS/2 If you...
Hardware Maintenance Manual
Page 48
Product overview Feature Memory (optional) Description T20, T21, T22 v 64 MB, 128 MB, or 256 MB DIMM card (maximum of 512 MB) CMOS RAM Display T23 v 64 MB, 128 MB, 256 MB, or 512 MB DIMM card (maximum of 1024 MB) 242 bytes T20 v 13.3-inch, 16M colors, XGA (... v Serial v One universal serial bus (USB) connector for T20, T21, and T22 series v Two USB connectors for T23 v RJ11 v RJ45 (covered) v TV-out (continued) 42 ThinkPad T20, T21, T22, T23 (MT 2647/2648)
Product overview Feature Memory (optional) Description T20, T21, T22 v 64 MB, 128 MB, or 256 MB DIMM card (maximum of 512 MB) CMOS RAM Display T23 v 64 MB, 128 MB, 256 MB, or 512 MB DIMM card (maximum of 1024 MB) 242 bytes T20 v 13.3-inch, 16M colors, XGA (... v Serial v One universal serial bus (USB) connector for T20, T21, and T22 series v Two USB connectors for T23 v RJ11 v RJ45 (covered) v TV-out (continued) 42 ThinkPad T20, T21, T22, T23 (MT 2647/2648)
Hardware Maintenance Manual
Page 56
...chip. 3. Confirm the operation and try again. 01C9 1. Remove the Ethernet More than one specified in IBM BIOS Setup Utility. 0230 Shadow RAM error-Shadow RAM fails at offset nnnn. 1. Remove one of the keyboard and the auxiliary input device. 0220 Monitor type...board. 0231 System RAM error-System RAM fails at offset nnnn. System board. 0196 Security hardware removed 1. System board. 50 ThinkPad T20, T21, T22, T23 (MT 2647/2648) Enter IBM BIOS Setup Utility by entering supervisor password, and select "Password" --> "IBM Security Chip" --> "Clear IBM Security Chip" to...
...chip. 3. Confirm the operation and try again. 01C9 1. Remove the Ethernet More than one specified in IBM BIOS Setup Utility. 0230 Shadow RAM error-Shadow RAM fails at offset nnnn. 1. Remove one of the keyboard and the auxiliary input device. 0220 Monitor type...board. 0231 System RAM error-System RAM fails at offset nnnn. System board. 0196 Security hardware removed 1. System board. 50 ThinkPad T20, T21, T22, T23 (MT 2647/2648) Enter IBM BIOS Setup Utility by entering supervisor password, and select "Password" --> "IBM Security Chip" --> "Clear IBM Security Chip" to...
Hardware Maintenance Manual
Page 57
Symptom-to-FRU index Symptom or error 0232 Extended RAM error-Extended RAM fails at offset nnnn. 0250 System battery error-System battery is dead. 0251 System CMOS checksum bad-Default configuration used. 0252 Password checksum bad-The ... Fail-safe timer NMI failed FRU or action, in IBM BIOS Setup Utility. 2. Replace the backup battery and run IBM BIOS Setup Utility to reset the time and date. 2. Run IBM BIOS Setup Utility to reset the time and date. 2. Diskette drive. 2. System board. ThinkPad T20, T21, T22 and T23 series 51 System board...
Symptom-to-FRU index Symptom or error 0232 Extended RAM error-Extended RAM fails at offset nnnn. 0250 System battery error-System battery is dead. 0251 System CMOS checksum bad-Default configuration used. 0252 Password checksum bad-The ... Fail-safe timer NMI failed FRU or action, in IBM BIOS Setup Utility. 2. Replace the backup battery and run IBM BIOS Setup Utility to reset the time and date. 2. Run IBM BIOS Setup Utility to reset the time and date. 2. Diskette drive. 2. System board. ThinkPad T20, T21, T22 and T23 series 51 System board...