Reassembly The Radio Chassis And Transceiver Board; Control Head Fitting - Motorola MTM700 Basic Service Manual

6 - 8

Reassembly the Radio Chassis And Transceiver Board

1. Inspect the transceiver board and ONLY if the surface of the thermal pads show signs of dam-
age, remove the thermal pads and apply thermal grease to the heatsink area on the chassis
and heat dissipating devices.
2. Insert the transceiver board at an angle (approximately 30°) into the chassis taking care to
slide the antenna connector and accessory connector into their cut-outs in the chassis.
3. Lower the transceiver board onto the chassis and align the two locating holes in the board
with the locating pins in the chassis.
4. Secure the cover to the chassis with the six screws previously removed.
5. Torque the six screws to 1.9 NM (17 in lbs) using the T20 TORX™ driver. Begin with screw 6
followed by 5 to 1. Since the screws usually take a set, torque the screws a second time (1.9
NM) in the same order.
6. Refit the top cover over the assembled radio chassis. Press the cover down until it snaps into
place.

Control Head Fitting

1. Align the 'dot' or 'O' marking on the flex with the 'O' mark on the chassis to the socket on the
radio assembly as shown in Figure 2.
2. Check that the back housing o-ring seal is undamaged and fitted in the groove. Replace the
seal if it is damaged (refer to the exploded view diagrams and parts list).
3. Fit the back housing to the control head. Ensure that the tags on the back housing align with
the snap catch grooves on the control head. Press the back housing into place until it snaps
into place.
4. Check that the radio chassis o-ring seal is undamaged and fitted in the groove on the chassis
assembly. Replace the seal if it is damaged.
MTM700 Mobile Terminal / Basic Service Manual MAINTENANCE