Motorola III - Manual (Page 16)

MAEPF-22622-O(A)
MAEPF-22622-O(B) MAEPF-22621-O 15
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
“ E R R O R X X / X X ” ( w h e r e X X / X X i s a n
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
a l l c u s t o m e r - s p e c i f i c f e a t u r e s . M o t o r o l a
recommends that the functionality of the radio be
periodically checked by an authorized Motorola
service shop.
2. (SECURENET-equipped radios only) - If the
e n c r y p t i o n k e y h a s f a i l e d , t h e d i s p l a y w i l l
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.
N o t e ( M o n i t o r O p e r a t i o n ) : S E C U R E N E T
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.