Motorola EP450

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December 3, 2003 HKLN4215A
6-12 Display Model Disassembly and Re-assembly: Disassembling and Re-assembling the Radio — General
6. Attach the flex cable into the connector on the keypad board, if not already connected.
7. Bend the flex cable as shown (Figure 6-15)
6.4.2.4 Keyboard Retainer Re-assembly
1. Insert the flex cable through the slot at the bottom of the keyboard retainer (Figure 6-16).
2. Insert the two top tabs of the keyboard retainer into the two tab retainers located on each side of
the speaker in the front housing (Figure 6-16).
3. Press the four keypad retainer locking tabs into the housing.
4. Push the speaker and microphone wires into the top left hand corner of the housing.
6.4.2.5 Chassis Assembly/Re-assembly
1. Replace the battery contact seal (if necessary) surrounding the battery contact (Figure 6-17).
2. Remove the old Interface Pad from the chassis by scraping off the pad and adhesive with a
straight razor. Use rubbing alcohol and a cloth to completely remove the adhesive from the chas-
sis surface. With the chassis clean and dry, add a new Interface Pad to the chassis.
3. Place the main circuit board straight down on top of the chassis with the frequency and volume
switches facing down (Figure 6-17).
4. Use the T6 Torx screwdriver to fasten the screws holding the main board to the chassis. Tighten
to 3.7 - 3.9 in/lb.
5. Replace the O-ring by positioning it 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.
6. Check that the O-ring is not twisted and being held by the top and bottom chassis groves.
Figure 6-16. Keyboard Retainer Re-assembly
Note:
Be sure the battery contact seal protrudes through the chassis and is not pinched under the
chassis.