User Guide
Table Of Contents
- Important Notice for Users
- Finding information with Access ThinkPad
- Contents
- Chapter 1. Overview of your new ThinkPad computer
- Chapter 2. Solving computer problems
- Diagnosing problems
- Troubleshooting
- Error codes or messages
- Errors without codes or messages
- A password problem
- A power switch problem
- Keyboard problems
- TrackPoint problems
- Infrared port problems
- Standby or hibernation problems
- Computer screen problems
- An external monitor problem
- A television problem
- Battery problems
- Hard disk drive problems
- CD-ROM, DVD-ROM, CD-RW, DVD/CD-RW drive problems
- Software problems
- Other problems
- Starting BIOS Setup Utility
- Recover pre-installed software
- Installing a new operating system and device drivers
- Backing up your system
- Replacing the hard disk drive
- Replacing the battery
- Chapter 3. Getting help and service from IBM
- Appendix A. Important safety instructions
- Appendix B. Warranty Information
- Appendix C. Notices
- Appendix D. Wireless Regulatory Information
- Index

Troubleshooting
If you do not find your problem here, refer to Access ThinkPad, your
on-board help system. Open Access ThinkPad by pressing the ThinkPad
button. The following section only describes problems that might prevent you
from accessing this help system.
Error codes or messages
Note:
1. In the descriptions below, x can represent any character.
2. The version of PC-Doctor referred to here is PC-Doctor for
Windows.
Message: 0175: Bad CRC1, stop POST task
Solution: The EEPROM checksum is not correct (block #6). Have the
computer serviced.
Message: 0187: EAIA data access error
Solution: The access to EEPROM is failed. Have the computer serviced.
Message: 0188: Invalid RFID serialization information area or bad CRC2.
Solution: The EEPROM checksum is not correct (block # 0 and 1, or block #
6). The system board should be replaced, and the box serial number needs to
be reinstalled. Have the computer serviced.
Message: 0189: Invalid RFID configuration information area
Solution: The EEPROM checksum is not correct (block # 4 and 5). The system
board should be replace, and the UUID needs to be reinstalled. Have the
computer serviced.
Message: 0190: Critical low-battery error
Solution: The computer turned off, because the battery is low. Connect the ac
adapter to the computer and charge the battery, or replace the battery with a
fully charged one.
Message: 0193: RF antenna has been removed
Solution: The RFID antenna that you installed has been removed. Enter the
supervisor password to return your computer to the normal operation.
Solving computer problems
Chapter 2. Solving computer problems 13