Troubleshooting - Motorola MICOM-2E ALE Owner's Manual

Troubleshooting

In case of malfunctioning, refer to the following table:
Table 5. User Troubleshooting Chart
Problem
Blank Display
Display present but weak or
no receive signal or noise
Engine noise picked up by
the antenna
Poor or no transmission
Troubleshooting
CHECK
DC power cable is connected properly to the radio and
battery.
A 7.5A fuse is installed in the fuse holder located on the
green wire of the DC power cable.
CHECK
Connection of antenna to antenna tuner and antenna
tuner to radio cables (loose or broken connections)
Squelch position OFF.
Correct programming of operating channel (frequency,
mode of operation, etc).
Determine by observing difference in the reception by
turning the Engine ON/OFF.
ENSURE
Ground leads are properly connected, all power wires
and ground leads are as short as possible
That Noise Blanker (if installed) is enabled.
Install noise reduction Kit TLN8845.
CHECK
That a 30A fuse is installed in the fuse holder located
on the red wire of the power cable.
That proper grounding cables are connected from the
radio and from the antenna tuner to the vehicle chassis.
While speaking, check RF power bars for activity. The
resultant RF power output is displayed in approximately
15 W increments (bars) being added from left to right.
If three or more left-hand bars disappear, there may be
a problem in the antenna system. If antenna cabling,
antenna mast rigging position has changed since the
antenna was last tuned, the antenna tuner will not be
adjusted automatically. To retune the antenna tuner,
scroll to the next channel and thereafter scroll back. If
this procedure does not correct the situation, inspect
the tuner, antenna and ground plane for loose
connections or misplaced parts. If no loose
connections are found, call the nearest Motorola
technician or service facility for assistance.
Maintenance
85