4.10 Upper System Board
Removing
the
Upper System Board (FATSU*)
To
remove the
T1900fr1900C's
upper system board, follow the steps below and refer
to
Figure 4-18.
I. Turn
off
the power
to
the T
1900fr
1900C, and,
if
attached, disconnect the AC
adapter, power cord and
all
external cables connected
to
the computer.
2. Remove the battery pack, optional memory card, optional PCMCIA card, top
cover, keyboard, lIDO, display mask, and display assembly as described
in Sec-
tions 4.2 through 4.9.
3. Disconnect the mouseIKB cable from
PJ3,
and
RTC
battery
cable from
PJ2
on
the
upper
system
board.
4. Remove the
Ml.5x6
sOver screw
on
the left side
of
the
upper
system
board
and
Mlx8
screw
on
the
optional
memory
card
connector.
5.
Pull
up
the upper system board
to
disconnect
PJ5
and
PJIO
and separate it from
the lower system board.
M2.5x6 screw
",
MouSeJKB
cable
RTC
battery
cable
Figure 4-18 Removing
the
Upper
System
Board
4-23
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