Service manual

The Internal Cables
5-22
11. Hold the cables in this position while sliding the power supply board into its guide
slots in the lower case. Be careful not to pinch the cables between the lower case and
the bottom edge of the board.
12. Be sure the bottom edge of the power supply board is seated in the lower case.
Tighten the ground lug nut.
13. Hook the fold-over tabs of the plastic insulator sheet over the top of the power supply
board.
14. Route the power supply cables, except the battery cable, through the center of the fer-
rite mounting bracket in the lower case.
15. Snap the ferrite bead on the battery cable into the mounting posts with the axis of the
bead going from side to side. Make sure the battery cables exiting each end of the fer-
rite bead are captured between the lower case mounting posts.
Replacing the Capacitor Board Cable
To replace the cables connecting the capacitor board to the control board:
1. Perform the procedures “Removing the Battery” and “Removing the Keyboard
Assembly”.
2. Perform the procedure “Opening and Removing the Top Cover Assembly”.
3. Lift the capacitor board off its mounting posts and disconnect the cable from control
board connector J305 by pulling straight up on the large ferrite bead.
4. Disconnect the cable from the capacitor board connector J5 by pulling the large ferrite
bead directly away from the capacitor board.
5. Plug either end of the replacement cable into J5 on the capacitor board. Substantial
force is required to fully seat the connectors.
6. Pull gently on both ends of the cable to ensure the cable is tightly wrapped around the
ferrite bead.
7. Plug the other end of the cable into connector J305 on the control board.
8. Tuck the ferrite bead into the space beneath connector J4 on the capacitor board so
that the axis of the bead is aligned from side to side.
9. Place the capacitor board on its mounting posts. Make sure the wires that wrap around
the ferrite bead are between the capacitor locating fences in the lower case. If exces-
sive force is required to fully seat the capacitor board in its mounting posts, make sure
the cable wires are wrapped tightly around the ferrite bead and are not being pinched
by the capacitor locating fences.