Motorola MT712, Basic Service Manual

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6 - 14 MTM700 Mobile Terminal / Basic Service Manual MAINTENANCE
To Disassemble the Connector Board from Expansion Head Housing
1. Remove the silicon rubber frame
2. Remove the four screws from the connector board.
3. Remove all the protection caps on the front of the expansion head housing.
4. Lift the connector board from the expansion head housing.
Expansion Head - Reassembly
To Reassemble the Expansion Head
1. Insert the connector board into the expansion head housing.
2. Secure the connector board with the four screws previously removed.
3. Insert the rubber frame
4. Insert the 40 pin flex from the connector board to the Expansion board, ensuring that the top
latch is firmly closed.
5. Snap the Expansion board into the expansion head housing
6. Connect the 12 line flex to the Radio, top small connector.
7. Connect the 40 line flex to the Radio, bottom large connector
8. Close the top latch after flex insertion
9. Push the expansion head housing onto the Transceiver until all 4 tabs snap firmly into place.
10. Connect modem cable and sophisticated remote mount controlhead (if applicable).
NOTE: For correct orientation of the flex align the ‘dot’ or ‘O’ marking on the flex with the ‘O’
mark on the PCB.
NOTE: The Expansion Head has a protection grade of IP54. To maintain IP54 sealing when
connecting a RS232 data cable make sure to use a IP54 specified cable. (example:
ROLINE AT-Modem cable ST-BU 1,8m order no. 11.01.4518)
NOTE: The flex is not designed for continuous insertion, replace after several uses.