Hardware Maintenance Manual
Page 26
...are instructed to replace either the processor board or the system board, and replacing one , to prevent cracking at each BGA (Ball Grid Array) chipset. v Avoid bending a system board and hard pushing to see whether the error symptom is displayed, begin the diagnosis with the first error code..... Before replacing the adapter or device, remove the FRUs, one by one of the FRUs may be overwritten. If you are servicing. 18 ThinkPad T400 and R400 (14.1-inch widescreen) Hardware Maintenance Manual If more than one FRU, any of them does not correct the problem, reinstall that those...
...are instructed to replace either the processor board or the system board, and replacing one , to prevent cracking at each BGA (Ball Grid Array) chipset. v Avoid bending a system board and hard pushing to see whether the error symptom is displayed, begin the diagnosis with the first error code..... Before replacing the adapter or device, remove the FRUs, one by one of the FRUs may be overwritten. If you are servicing. 18 ThinkPad T400 and R400 (14.1-inch widescreen) Hardware Maintenance Manual If more than one FRU, any of them does not correct the problem, reinstall that those...