About this manual
This manual contains service and reference information for
IBM ThinkPad R50/R50p and R51 series (MT1829, 1830,
1831, 1832, 1833, 1836, 1840, 1841, 2883, 2887, 2888,
2889, 2894, 2895), and ThinkPad Dock II (MT2877)
products. 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 for trained service
personnel who are familiar with ThinkPad products.
Use this manual along with the advanced diagnostic
tests to troubleshoot problems effectively.
Before servicing an IBM ThinkPad product, be sure
to review the safety information under “Safety
notices: multilingual translations” on page 4, “Safety
information” on page 16, and “Laser compliance
statement” on page 22.

© Copyright IBM Corp. 2004 1