About this manual
This manual contains service and reference information for the following
ThinkPad® products.
ThinkPad R61 and R61i
MT 7642, 7643, 7644, 7645, 7646, 7647, 7648, 8914, 8918, 8919, 8920, 8927,
8928, 8929, 8930, 8932, 8933, 8934, 8935, 8936, and 8937
ThinkPad R61e and R61i

MT 7649, 7650, and 7657

Use this manual along with the advanced diagnostic tests to troubleshoot
problems.
The manual is divided into sections as follows:

v The common sections provide general information, guidelines, and safety

information required in servicing computers.

v The product-specific section includes service, reference, and product-specific

parts information.

Important:
This manual is intended only for trained servicers who are familiar with
ThinkPad products. Use this manual along with the advanced diagnostic tests to
troubleshoot problems effectively.
Before servicing a ThinkPad product, be sure to read all the information under
“Safety information” on page 1 and “Important service information” on page 17.
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