Motorola EP450 service manual Installation of Main Board onto Chassis

7-10 Non-Display Model Disassembly and Re-assembly:Disassembling and Re-assembling the Radio — General

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Frequency & Volume Switches

Audio Jack Shroud

(Replace after Plugging

in Speaker and Mic)

Main Board

Interface Pad

Radio Chassis

Battery Contact Seal

O-ring

Figure 7-12. Installation of Main Board onto Chassis

7.4.3.4Chassis and Front Cover Re-assembly

8.Dress and connect the speaker wires.

Note: Care should be taken when dressing the speaker and microphone wires to avoid pinching them between the speaker magnet and shield, or between the accessory connector and housing.

Note: Ensure that the plug orientation is correct with the exposed pins in the wire casing facing upward and fully plugged in.

a.Connect the speaker wire assembly into the 10-pin connector on the main board and bend the wires at the board connector so the wires are positioned toward the top of the radio (Figure 7-13).

b.Connect the microphone wire assembly into the two hole socket on the main board and bend the wires at the board connector so the wires are positioned toward the top of the radio (Figure 7-13).

c.Slide the audio jack shroud onto accessory connector (Figure 7-12).

9.Slide the volume potentiometer and frequency switch shafts into their respective holes in the front cover. Look through the accessory connector opening to make certain that the wires are not pinched.

10.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.

11.c. Ensure that the bottom side of the dust cap is fully pressed into the housing before the snap- ping the board into place

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December 3, 2003 HKLN4215A