Motorola GP300 Series Basic Service Manual page 21

Radio Disassembly — Detailed
Pull the volume and channel selector knobs off of their shafts.
4.
GP320/340/360/380
Both knobs slide on and off. However, they are supposed to fit very tightly on their shafts.
NOTE
Separate the chassis from the internal electronics front cover assembly as follows:
5.
a. Insert a small, flat-blade screwdriver, or similar instrument, in between the thin retaining
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 small flat-blade
screwdriver down, or chassis opener (6680702Z01) 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 Chassis
GP320/340/360/380
CAUTION: Marring the front cover O-ring sealing area will prevent the radio from
!
sealing properly.
Flexible ribbon circuits (flexes) connecting the front cover assembly and the chassis
NOTE
prevent you from completely separating the two units. Display radios and radios with
option boards have two flexes.
Lay the chassis down. Rotate the front cover backward and slightly away from the chassis.
6.
Knobs
Figure 3-2 Knob Removal
Radio Chassis
Figure 3-3 Chassis Removal
GP344/388
Chassis Opener
Chassis Base Tabs
GP344/388
3-5
Knobs