Lenovo ThinkPad T42 Hardware Maintenance Manual - Page 152
Protection
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Removing and replacing a FRU Important notice for handling the system board in ThinkPad T42 series: In ThinkPad T42 series, the security chip a is soldered on the underside of the system board as in this figure. a In ThinkPad T42 series, accelerometer chip for the HDD Active Protection System b is also soldered on the topside of the system board. b 146 T40/T40p, T41/T41p, T42/T42p
Important
notice
for
handling
the
system
board
in
ThinkPad
T42
series:
In
ThinkPad
T42
series,
the
security
chip
±a²
is
soldered
on
the
underside
of
the
system
board
as
in
this
figure.
a
In
ThinkPad
T42
series,
accelerometer
chip
for
the
HDD
Active
Protection
System
±b²
is
also
soldered
on
the
topside
of
the
system
board.
b
Removing
and
replacing
a
FRU
146
T40/T40p,
T41/T41p,
T42/T42p