Motorola PR400 - Manual (Page 81)

6881096C24-A August, 2004
Limited Keypad Model Disassembly and Re-assembly: Disassembling and Re-assembling the Radio — General 7-13
5. Replacing the O-ring.
a. If you have the older chassis (2786389Z01) use the older O-ring (3286431Z02). Position
the O-ring in the top groove by the volume/frequency switches. Stretch the O-ring to
place it into the retaining groove at the bottom end of the chassis.
b. If you have the newer chassis (2786389Z02) use the newer O-ring (3286431Z05). Posi-
tion the O-ring with the plug on the right side (speaker connector side). Push the plug all
the way into the chassis slot until it is touching the chassis flange. Repeat for the left
side. Stretch the O-ring to place it into the retaining groove at the top and bottom end of
the chassis.
6. Check the top corner of the chassis by flipping the O-ring, if the O-ring came out easily, twist the
O-ring and re-try until the O-ring is held properly by the chassis.
7.4.3.6 Chassis and Front Cover Re-assembly
1. Dress and connect the speaker wires.
Figure 7-17. Installation of Main Board onto Chassis
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.
Main Board
Radio Chassis
Battery Contact Seal
Interface Pad
Frequency &
Volume Switches
Audio Jack Shroud
(Replace after Plugging
in Speaker and Mic)
O-Ring