MAINTENANCE MTH800 TETRA Handportable Terminal / Basic Service Manual 6 - 11
To install the back housing
1. Position the back housing over the unit.
2. Verify that the cover is positioned correctly, screw holes are aligned to the
threads of the front housing, external antenna connector is inserted into its
dedicated hole, and the styling groove of the back housing meets the styling
groove of the front housing.
3. Using the Torx driver with the T-8 Torx bit, screw with a torque of 3.8±0.3
in-lb
(0.43±0.034 Nm).
4. Add the washers. Screw the back housing screws in the following order:
bottom two screws first, and then diagonally.
5. Glue a new oval label over the holes of the two upper screws and a new
Tamper Evident label on the holes of the two center screws.
Removing and Installing the Vibrator
Recommended tool: mini flat-tip screwdriver
(See Figure 8)
To remove the vibrator
1. Remove the back housing. Refer to “Removing and Installing the Back
Housing” on page 9.
2. Turn the back housing up side down and, using the screwdriver, remove the
vibrator from its chamber inside the back housing.
To install the vibrator
1. Carefully push the vibrator into its chamber in the back housing.
2. Install the back housing.
Removing and Installing the Main Board
Recommended tools: mini flat-tip screwdriver
To remove the main board from the unit
(See Figure 9)
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