Figure 3-3: Chassis Removal; Figure 3-4: Unlatch Flex Connectors - Motorola HT750 - UHF/VHF/Low Band - Radio Service Manual

Portable professional radios

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Maintenance

4. Separate the chassis from the internal electronics front cover assembly as follows:

a. Insert a small, 3/16" flat-blade screwdriver, or similar instrument, in between the thin

remaining wall and the chassis at the bottom of the radio. Do not mar the O-ring sealing area

on the housing.

b. Slowly pry the bottom of the chassis from the cover by pushing the 3/16" flat-blade

screwdriver down, and rotating the handle of the tool over and behind the base of the radio.

This prying action forces the thin inner plastic wall toward the base of the radio, releasing the

two chassis base tabs.

Radio

CAUTION: Marring the front cover O-ring sealing area will prevent the radio from

sealing properly.

C a u t i o n

6. Lay the chassis down. Rotate the front cover backward and slightly away from the chassis.

NOTE: Flexible ribbon circuits (flexes) connecting the front cover assembly and the

chassis prevent you from completely separating the two units. Display radios and

radios with option boards have two flexes.

5. Lift the latches on the main circuit board to release the flexes from their connectors.

Figure 3-3: Chassis Removal

Flex Connector

Latches

3-5

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