Removing The Modem Board; Removing The Mp Connection Unit; Removing The Main Pcb - Panasonic Toughbook CF-28 Service Manual

6.8. Removing the I/O Board
CN706
IO Board
CN10
Figure 17
1. Remove the three connectors, CN706, CN10 and
CN20, to allow the I/O board to be separated from the
main PCB.
2. Remove the four securing screws <I> and the six
securing screws <H> from the rear connector cover.
Screw <I> : DFHE5104ZA
Screw tightening torque 0.196 ± 0.0098 N·m (2.0 ± 0.1 kgf·cm)
Screw <H> : DFHE5058ZA
Screw tightening torque 0.49 ± 0.049 N·m (5.0 ± 0.5 kgf·cm)

6.9. Removing the Modem Board

<J>
CN800
Modem Board
Figure 18
1. Remove connector CN800, to allow the modem board
to be separated from the main PCB.
2. Remove the two securing screws <J>.
Screw <J> : XTB2 + 6GFZ
Screw tightening torque 0.19 ± 0.02 N·m (2.0 ± 0.2 kgf·cm)
<I> <H>
<H>
CN20
6.10. Removing the MP
Connection Unit
<K>
CN24
Connector A
1. Remove the Connector A to allow the MP Connection
Unit to be separated from the Modem Cable.
2. Remove the three connectors, CN24, CN2 and CN5,
to allow the MP Connection Unit to be separated from
the main PCB.
3. Remove the two securing screws <K>.
Screw <K> : DFHE5092ZA
Screw tightening torque 0.49 ± 0.05 N·m (5.0 ± 0.5 kgf·cm)

6.11. Removing the Main PCB

<L>
CN54
1. Remove the microphone cable from connector CN23.
2. Remove the reed switch cable from connector CN14.
3. Remove the touch pad cable from connector CN54.
4. Remove the five screws <L> that secure the main
PCB.
Screw <L> : DFHE5092ZA
Screw tightening torque 0.49 ± 0.05 N·m (5.0 ± 0.5 kgf·cm)
6 - 4
CN5
<K>
CN2
MP
Connection
Unit
Figure 19
CN23
CN14
Figure 20