Tecra 780CDM / 780DVD Disassembly Overview, (cont.)
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To install the middle frame, follow the steps below.
1.Make sure the SelectBay release lever is extended and the SelectBay lock is in the locked position.
2.Seat the middle frame and make sure a small tongue on the middle frame’s SelectBay locking mechanism fits into a corresponding notch on the external SelectBay lock.
3.First secure one M2.5x8 screw next to the SelectBay lock arm, then secure the other M2.5x8 screw.
4.Place the CONN holder assembly and secure it with three M2.5x10 silver screws.
5.Connect two secondary battery cables to the I/O board.
6.Seat the protective metal plate.
7.Thread the battery cables in the groove and seat the cable holder.
8.Replace the tape.
9.Secure the SelectBay top cover with two M2.5x6 screws and one M2.5x8 screw.
10.Install the system board, top cover with display assembly, membrane switch, keyboard, backup and RTC batteries, modem board, optional memory module, HDD pack, optional PC card, and battery pack.
To remove the I/O board, follow the steps.
1.Turn off the power to the computer. Disconnect the AC adapter and all external cables connected to the computer.
2.Remove the battery pack, optional PC card, HDD pack, optional memory module, modem board, backup and RTC batteries, keyboard, membrane switch, top cover with display assembly, system board, and middle frame.
3.From the bottom of the battery pack slot, push up on the battery jumper contact and slide it forward.
4.Press down on the battery jumper as shown in the figure below and slide the jumper out to remove it.
5.Remove one M2x6 screw securing the I/O board to the bottom cover.
6.Lift out the I/O board.
7.Lift out the base shield assembly (with rubber heat conductor).
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