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General descriptions
This chapter includes descriptions for any ThinkPad model
that has the PC-Doctor DOS diagnostics program. Some
descriptions might not apply to your particular computer.
Read this first
Before you go to the checkout guide, be sure to read this
section.
Important notes
v
Only certified trained personnel should
service the computer.
v
Read the entire FRU removal and replacement
page before replacing any FRU.
v
Use new nylon-coated screws when you
replace FRUs.
v
Be extremely careful during such write
operations as copying, saving, or formatting.
Start sequence of drives in the computer that you
are servicing might have been altered. If you
select an incorrect drive, data or programs might
be overwritten.
v
Replace FRUs only for the correct model.
When you replace a FRU, make sure the model
of the machine and the FRU part number are
correct by referring to the FRU parts list.
v
A FRU should not be replaced because of a
single, unreproducible failure. Single failures
can occur for a variety of reasons that have
nothing to do with a hardware defect, such as
cosmic radiation, electrostatic discharge, or
software errors. Consider replacing a FRU only
when a problem recurs. If you suspect that a
FRU is defective, clear the error log and run the
test again. If the error does not recur, do not
replace the FRU.
v
Be careful not to replace a nondefective FRU.
What to do first:
When you do return a FRU, you must include the following
information in the parts exchange form or parts return form
that you attach to it:
__ 1. Name and phone number of servicer
__ 2. Date of service
__ 3. Date on which the machine failed
__ 4. Date of purchase
__ 5. Failure symptoms, error codes appearing on the
display, and beep symptoms
21
Summary of Contents for ThinkPad A22e
Page 24: ...Laser compliance statement 20 ThinkPad A21e A22e i 1800 MT 2655 2663 2664 ...
Page 72: ...6 5 4 4 6 5 7 6 Removing and replacing a FRU 68 ThinkPad A21e A22e i 1800 MT 2655 2663 2664 ...
Page 113: ...4 3 Removing and replacing a FRU ThinkPad A21e A22e i 1800 109 ...
Page 142: ... Part Number 24P2910 Printed in U S A 1P P N 24P2910 ...