Preface
About this manual
This manual contains service and reference information for
IBM ThinkPad R30/R31 products. Use this manual along
with the advanced diagnostic tests to troubleshoot
problems effectively.
The manual is divided into sections as follows:
v The Introduction section provides general information,
guidelines, and safety information required to service
computers.
v The product-specific section includes service, reference,
and product-specific parts information.
Important
This manual is intended for trained servicers 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
(Multi-lingual Translations)” on page 3,“Safety
Information” on page 13, and “Laser Compliance
Statement” on page 17.
iii