3-12 Maintenance
8. Reassemble the knobs, dust cover, antenna, and battery.
Figure 3-9: Fastening the Chassis

3.7.7 DTMF Retrofit Kit Procedure (Optional Upgrade Procedure)

If you are performing an upgrade from a basic model to a DTMF model, replace the existing front
cover kit with kit number HLN9984 and follow the reassembly steps to reassemble the upgraded
radio. (See paragraph 3.7 for details about reassembly.)
To activate the retrofit using the radio software, follow these steps:
1. Start the Customer Programming Software (CPS).
2. Read the codeplug data by clicking on the READ icon in the menu bar, or by selecting READ
DEVICE in the pulldown menu.
3. Open the Radio Configuration dialog box. (See Figure 3-10.)
4. Change the Keypad Configuration from “No Keypad” to “Programmable/Numeric”.
(See Figure 3-10.)
5. Write the codeplug back to the radio by clicking on the WRITE icon in the menu bar, or by
selecting WRITE DEVICE in the pulldown menu.
Figure 3-10: Activating the Retrofit
Radio
Chassis