Motorola MTX1550 Guide De L'utilisateur page 21

20L01-A_PR_UG_MTX4500.book Page 19 Friday, April 13, 2007 2:47 PM
RADIO OPERATION
Turning the Radio On or Off
To turn the radio on, turn the On-Off/Volume Control
knob clockwise.
To turn the radio off, turn the On-Off/Volume Control
knob counterclockwise until you hear a click.
Adjusting the Radio's Volume
Turn the On-Off/Volume Control knob to adjust the
volume level.
Listen until you hear a transmission, then adjust the
volume control for a comfortable listening level.
Or, if a button is programmed for "volume set," press this
button and adjust the volume to a comfortable listening
level.
ON OFF
Radio Self Test
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
authorized Motorola service shop.
checked by an
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Englis