MA200
13
CARE AND MAINTENANCE
Keep the product dry. If it does get wet, wipe it dry immediately. Liquids might
contain minerals that can corrode the electronic circuits.
Keep the product away from dust and dirt, which can cause premature wear
of parts.
Handle the product gently and carefully. Dropping it can damage circuit
boards and cases, and can cause the product to work improperly.
Wipe the product with a dampened cloth occasionally to keep it looking new.
Do not use harsh chemicals, cleaning solvents, or strong detergents to clean
the product.
Use and store the product only in normal temperature environments. High
temperature can shorten the life of electronic devices, damage batteries, and
distort or melt plastic parts.
Ignition
The most common source of noise in reception is the ignition system. This is a
result of the radio being placed close to the ignition system (engine). This type of
noise can be easily detected because it will vary in intensity of pitch with the speed
of the engine.
Usually, the ignition noise can be suppressed considerably by using a radio
suppression type high voltage ignition wire and suppressor resistor in the ignition
system. (Most vessels employ this wire and resistor but it may be necessary to
check them for correct operation.) Another method of suppression is the use of
additional noise suppressors. These can be obtained from most CB/A radio or
electronic supply shops.
Interference
Radio reception in a moving environment is very different from reception in a
stationary environment (home). It is very important to understand the difference.
AM reception will deteriorate when passing under a bridge or when passing under
high voltage lines. Although AM is subject to environmental noise, it has the ability
to receive at great distance. This is because broadcasting signals follow the
curvature of the earth and are reflected back by the upper atmosphere.
TROUBLESHOOTING
Symptom
Cause
Solution
No Power
The vessel’s accessory
switch is not on
If the power supply is
properly connected to the
vessel’s accessory
terminal, switch the
ignition key to “ACC”
Fuse is blown
Replace the fuse
No Sound
Volume is too low
Adjust volume to audible
level
Wiring is not properly
connected
Check wiring connections
The Operation keys do not
work
Wired commander is not
properly installed
Check wired commander
installation and connection
Built-in microcontroller is
not operating properly
Press the
RESET
button
located on the back of the
Tuner/Amp Module
