Sec 2: 5-4 Performance Checks: Top-Display Version Radio Test Mode
5.2.3 Control Top Test Mode
This test mode is used to verify proper operation of all radio buttons and switches if a failure is
suspected.
To perform the control top checks:
1. Press and hold the Top Button (Orange button); the LED lights red, and the radio beeps.
2. Release the Top Button; the radio beeps, indicating that the Top Button is in the open
position.
3. Press the Top Button again; the radio beeps, indicating that the Top Button is in the closed
position.
4. Rotate the Two-Position Concentric Switch; the radio beeps in each switch position.
5. Rotate the 16-Position Select Switch; the radio beeps in each switch position.
6. Cycle through the Three-Position A/B/C Switch; the radio beeps in each switch position.
7. Rotate the Volume Control; the radio beeps at each new volume setting.
8. Press the Top Side Button; the radio beeps.
9. Press Side Button 1; the radio beeps.
10. Press Side Button 2; the radio beeps.
AST ASTRO RX: none
TX: Digital Voice
***
USQ Carrier
Unsquelch
RX: unsquelch always
TX: mic audio
** On radios equipped with secure option.
***All deviation values are based on deviation tuning of this
mode.
Table 5-3. Test Environments (Continued)
Display Description Function
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