Internal Assemblies - Top Case
4-46 Removal and Replacement
Replacement
1. Replace the IrDA break-off PCA.
If the IrDA PCA was removed, replace it now.
a. Connect the cable to the IrDA PCA.
b. Place the IrDA PCA in position inside the top case.
c. Replace the two screws.
2. Connect the three individual wires to the Keyscan PCA.
a. Connect the longest wire to the spade connector at the lower left edge
of the PCA. This wire has spade receptacles on both ends.
b. Connect the other two wires to the spade connectors at opposite side
edges of the PCA (on either end of the power resistors). These wires
have ring terminals on their other ends.
3. Install the Keyscan PCA.
a. Align the bottom edge of the PCA with the mating slots in the case.
Note that there is also a slot in the PCA which must line up with a rib
on the case. See Figure 4-24.
b. As you lay the PCA against the threaded standoffs, guide the two
display ribbon cables through the window in the Keyscan PCA.
c. Replace the two T10 screws and tighten.
4. Reconnect the Keyscan PCA.
a. Connect the two paddle wires to the paddles pockets. Replace the
two T10 screws and tighten.
b. Connect the two display ribbon cables. Latch the larger one in posi-
tion. Be sure the smaller one is fully inserted in its connection.
c. Connect the Energy Select Switch. Be sure the connector latches into
position securely.
d. Connect the IrDA break-off PCA.
e. Connect the four keypad flex circuits. Have the latching top of the
connector up; then slide the flex circuit into place and push the top
down to latch it. Route the flex circuits as they originally were, with
two above and two below the Keyscan PCA.
NOTE If the Pacing option is not installed, there will be only two flex circuits.
f. Connect the large ribbon cable, keeping its orientation and bending as
they were originally.
To Next Page
Loading...
