Motorola MOTOTRBO SL1600 - Call Alert Operation; Responding to Call Alerts; Making Call Alerts; Press the programmed One Touch Access button.

Transceiver Performance Testing Test Mode 3-9
4. The radio display shows LOOP.
3.3.9 Battery Check Test Mode
3.3.9.1 Display Model
1. Press and hold the Side Programmable Button, to switch from Audio Loopback Earpiece
Test Mode to Battery Check Test Mode.
2. The radio beeps once.
3. The radio’s LED indicator shows GREEN for High battery level, AMBER for Mid battery level,
and RED for Low battery level.
4. The radio display shows BATT.
3.3.10 Button Test Mode
3.3.10.1 Display Model
1. Press and hold the Side Programmable Button, to switch from Battery Check Test Mode to
Button Test Mode.
2. Upon any button press, the radio beeps once.
3. The radio display shows BTN.
NOTE: Upon completion of the final Button Test, press the ON/OFF Button, to power down the radio.