Motorola III User Manual download pdf (Page 16)

MAEPF-22622-O(A)

MAEPF-22622-O(B)

MAEPF-22621-O

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.

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Motorola III User Manual Page 16

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