Motorola EP450 service manual PTT Re-assembly, Fastening the Chassis

Display Model Disassembly and Re-assembly:Disassembling and Re-assembling the Radio — General 6-15

5.Snap chassis assembly completely into the top of the front cover (Figure 6-20) until it settles in place.

Radio Chassis

Figure 6-20. Fastening the Chassis

6.Make sure the 0-ring is properly seated. If the O-ring seal is pinched, separate the chassis from the housing using the knob removal/chassis opener and dress O-ring properly.

7.Snap the bottom of the chassis into the front cover.

8.Check that O-ring is visible at the corners.

9.After closing the radio, verify that the O-ring is not visible; if visible, re-assemble properly.

10.Re-assemble the knobs, antenna, and battery.

6.4.2.7PTT Re-assembly

1.Place the PTT seal over the ridge around the top hole. Press down to seat the seal around the ridge.

2.Place the bottom tab in the slot inside the front housing PTT opening. Slightly slide down the PTT and bow it by placing one finger under the middle of the PTT, so that the top tab can be aligned and inserted into the top slot (Figure 6-21a).

3.Press the PTT assembly against the front cover opening (Figure 6-21b).

a. Place bottom tab into bottom slot. Place top tab into top slot.

b. Push down on PTT toward bottom of radio so hooks do not get crushed.

Figure 6-21. PTT Re-assembly

HKLN4215A December 3, 2003