User Guide

PowerBook G4 Modem - 2
6. Release the keyboard by pulling down on the keyboard release tabs located to the left
of the F1 and F9 keys (Figure 3), then lift the top portion of the keyboard up and
toward the display to release the tabs that hold the bottom of the keyboard in place.
7. Flip over the keyboard and lay it on the palm rests and trackpad (Figure 4).
Removing the Modem
1. Touch the computer’s inside framework (a dull gray conductive composite material) to
discharge any static electricity, as shown (Figure 5).
Important: To avoid electrostatic discharge damage, always ground yourself by
touching the computer’s framework before you touch any parts or install any
components inside the computer. To avoid static electricity building back up in your
body, do not walk around the room until you have completed your installation and
closed the computer.
2. Locate the modem and remove the 5 mm hexnut screw (Figure 6A).
3. Pull up on the right, front corner of the modem to disconnect it from the logic board
(Figure 7).
4. The modem must be removed carefully to avoid damaging delicate parts, including the
modem connector cable. While guiding the right front corner of the modem up and out,
carefully rotate the left side in a clockwise motion around the protruding metal tab
where the hexnut screw attached (Figure 8).
Note: The mylar sheathing around the modem may catch on this protruding tab. With
careful manipulation around the tab, the modem will come out.
5. Disconnect the modem connector cable (Figure 9).
Installing the Replacement Modem
1. Connect the modem connector cable to the modem (Figure 10).
2. Begin to insert the left side of the modem into the modem opening, then guide it
around the protruding metal tab in a counterclockwise motion (Figure 11).
The right side should then set into place and lay flat.
Note: Visually verify that the modem connector cable is still attached.
3. Press down on the front edge of the modem in the center to firmly connect it to the
logic board (Figure 12).
Note: You may need to maneuver the modem around slightly until you feel the
connectors match up.