MAINTENANCE MTP850 TETRA Handportable Terminal / Basic Service Manual 6 - 19
Removing and Installing the Keypad Board and Main Board
Recommended tools: T-6 Torx bit, Torx driver, mini flat-tip screwdriver.
To remove the Keypad Board and Main Board
1. Remove the internal assembly from the unit. Refer to “Removing and
Installing the Internal Assembly” on page 6-15.
2. Using the Torx driver with the T-6 Torx bit, unscrew the two screws fastening
the keypad board.
3. Gently remove the keypad board from the assembly.
4. The main board can be separated enough from the chassis to remove the
LCD flex connector from the main board, then the main board can be
removed.
To install the Keypad Board and Main Board
1. Connect the LCD flex connector to the main board, then place the main board
in position on the chassis.
2. Gently place the keypad board into position on the assembly, making sure
that the board-to-board connectors mate.
3. Using the Torx driver with the T-6 Torx bit, screw the two screws fastening the
keypad board with a torque of 2.0±0.5 in-lb (0.23±0.058 Nm).
4. Install the internal assembly into the front housing. Refer to “Removing and
Installing the Internal Assembly” on page 6-15.
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