Error messages
	Beep and no beep symptoms
	Numeric error codes
	LCD related symptoms

• G40, G41
• R40, R40e, R50, R50e, R50p, R51, R51e, R52, R60, R60e, R61
• T20, T21, T22, T23, T30, T40, T40p, T41, T41p, T42, T42p, T43, T43p, T60, T60p, T61
• X30, X31, X32, X40, X41, X41 Tablet, X60, X60, X60 Tablet, X61, X61s, X61 Tablet, X300
• Z60m, Z60t, Z61e, Z61m, Z61t
  
  

When analyzing an intermittent problem, do the following:

• Run the diagnostic test for the system board in loop mode at least 10 times
• If no error is detected, do not replace any service parts
• If any error is detected, replace the service part shown by the service part code. Rerun the test to verify that no more errors exist.
  
  

1. Verify that all attached devices are supported by the computer.
2. Verify that the power supply being used at the time of the failure is operating correctly.
3. Power off the computer.
4. Visually check each service part for damage. Replace any damaged service part.
5. Remove or disconnect all of the following devices:
   
   • Non-ThinkPad devices
   • Devices attached to the port replicator 
   • Printer, mouse and other external devices
   • Battery pack
   • Hard drive
   • External diskette drive
   • DIMM
   • CD-ROM drive or diskette drive in the Ultrabay
   • PC Cards (PCMCIA)
6.  Power on the computer.
7.  Determine whether the problem has changed.
8.  If the problem does not occur again, reconnect the removed devices one at a time until you find the failing service part.
9.  If the problem remains, replace the following service parts one at a time (do not replace a non-defective service part):
   
   1. System board
   2. LCD assembly
      
      

	Customer Replaceable Unit (CRU) parts installation and removal movies
	How to access the BIOS - ThinkPad General
	Service parts list index
	Troubleshooting
	Submit a technical question
	Contact your local technical Support Center