Ptt Re-Assembly - Motorola PR400 Basic Service Manual

Limited Keypad Model Disassembly and Re-assembly: Disassembling and Re-assembling the Radio — General 7-15
4. Push the topside of the board chassis upward until it touches the housing end. Before snapping
the board into the housing, perform the following checks:
a. Open the dust cap and ensure the wires are not pinched between the shroud and housing.
b. Ensure the O-ring is seated in the groove.
c. Ensure that the bottom side of the dust cap is fully pressed into the housing before the
snapping the board into place.
5. Snap chassis assembly completely into the top of the front cover
place.
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. Re-assemble the knobs, antenna, and battery.

7.4.3.7 PTT 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
3. Press the PTT assembly against the front cover opening
a. Place bottom tab into bottom slot.
Place top tab into top slot.
6881096C24-A
Radio Chassis
Figure 7-20. Fastening the Chassis
(Figure 7-21a).
Figure 7-21. PTT Re-assembly
(Figure
(Figure 7-21b).
b. Push down on PTT toward bottom
of radio so hooks do not get crushed.
7-20) until it settles in
July, 2004