15 Basic Radio Operation
Radio On/Off; Power-Up
1.Turn the radio on by rotating the volume control clockwise. The radio goes through a power-up self check and, if it passes the check, the display
momentarily shows “SELF TEST.” A good-power- up, high-pitched tone sounds to indicate that the radio has passed the self check.
If the radio fails the self check, the display shows
“ERROR XX/XX” (where XX/XX is an alphanumeric error code), accompanied by a bad-
power-up, low-pitched tone. Turn the radio off, check the battery, and turn the radio back on. If the radio still does not pass the self check, a problem exists in the radio. Contact your nearest Motorola Service Shop.
Note: The power-up self check verifies that the radio’s microprocessor -based systems are working, but it does not check all of the rf components, nor does it check the operation of all customer -specific features. Motorola recommends that the functionality of the radio be periodically checked by an authorized Motorola service shop.
2.(SECURENET-equipped radios only) - If the encryption key has failed, the display will momentarily show “KEYFAIL,” accompanied by a six-beep keyfail tone. For SECURENET operation to function, reload the encryption key from a key variable loader (KVL).
3.Turn the radio off by rotating the volume control fully counterclockwise until you hear a click.
Monitoring (Conventional Modes Only)
Turn the radio on, momentarily press the monitor button (typically side button 3), and listen for activity. To put the radio in permanent monitor operation (Private-Line®(PL) defeat), press and hold the monitor button for five seconds (programmable time). The radio emits a short, high-pitched tone as it enters the permanent monitor mode. To return the radio to its original squelch state, tap the monitor button again or press the PTT switch.
Note (Monitor Operation): SECURENET transmissions from a radio that has the same key as the monitoring radio will be heard clearly, unless the monitoring radio has had its key erased or is using a different key; then, the transmission will be heard as noise that is nearly indistinguishable from channel noise.
