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About this manual
This manual contains service and reference information for
ThinkPad
®
R50e series (MT 1834, 1842, 2670), R51e
series (MT 1843, 1844, 1845), R52 series (MT 1846, 1847,
1848, 1850, 1858, 1859, 1860, 1861, 1862, 1863, 1870),
and ThinkPad Dock II (MT2877) products. Use this manual
along with the advanced diagnostic tests to troubleshoot
problems.
Note
MT 1850, 1862, 1863, and 1870 are special bids.
For information on how to locate service parts, refer
to “Strategy for replacing FRUs for CTO, CMV, and
GAV” on page 4.
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 a ThinkPad product, be sure to
review the safety information under “Safety notices:
multilingual translations” on page 8, “Safety
information” on page 20, and “Laser compliance
statement” on page 26.
© Lenovo 2005. Portions © IBM Corp. 2005. 1