Chapter 5: Mechanical Considerations
End-Cap Modules and Devices
Psion Teklogix Omnii HDK User Manual
67
Figure 5.1 End-Cap Overmould
The expansion back cover has options to attach a speaker and/or a camera mounted in the back of
the unit. End-cap mounted devices should not intrude on the space required for these options, even
if they are not installed at the time of development. These “keep-away” areas are indicated in the
3D CAD file for the expansion back cover.
End-cap modules are attached to the expansion back cover with four M3 screws. The end-cap
module must be designed with holes for these four screws, to be torqued to 5 in-lb (0.56 N-m) in
order to maintain a proper seal.
Figure 5.2 Location of End-Cap Mounting Points
Installing End-Cap Modules
The standard end-cap is attached with four screws. Removing and installing these screws
requires a T10 Torx screwdriver.
To remove the end-cap:
1. Remove the four T10 screws securing the end-cap to the main housing.
2. Remove the end-cap.
3. If a GPS radio is installed in the end-cap, remove the back cover and disconnect the
antenna from the socket on the GPS board. To remove the back cover:
a. If a scanner or imager pod module is installed, first remove the four T10 Torx screws
holding the pod to the housing, and disconnect the intermediate scanner flex cable from
the scanner module (the intermediate scanner flex cable connects the scanner module to the
scanner port on the main logic board).
b. Remove the eight T10 Torx screws holding the back cover to the main housing.
c. Remove the two T6 Torx screws at the top of the display on the front of the unit.
d. Separate the back cover from the main housing. You can now disconnect the antenna wire
from the GPS module.
Expansion
Device
Main
Housing
Overmould
Ridge
units = mm
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