Care And Maintenance - Jensen JWM20 Installation And Owner's Manual

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.
FCC Notes
NOTE: This equipment has been tested and found to comply with the limits for a
Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are
designed to provide reasonable protection against harmful interference in a
residential installation. This equipment generates uses and can radiate radio
frequency energy and, if not installed and used in accordance with the instructions,
may cause harmful interference to radio communications. However, there is no
guarantee that interference will not occur in a particular installation. If this
equipment does cause harmful interference to radio or television reception, which
can be determined by turning the equipment off and on, the user is encouraged to try
to correct the interference by one or more of the following measures:
---Reorient or relocate the receiving antenna.
---Increase the separation between the equipment and receiver.
---Connect the equipment into an outlet on a circuit different from that to which the
receiver is connected.
---Consult the dealer or an experienced radio/TV technician for help.
WARNING: Changes or modifications not expressly approved by the party
responsible for compliance could void the user's authority to operate the equipment.
This equipment complied with FCC radiation exposure limits set forth for an
uncontrolled environment. This equipment should be installed and operated with
minimum distance 20cm between the radiator & your body.
NOTE: The manufacturer is not responsible for any radio or TV interference
caused by unauthorized modifications to this equipment. Such modifications
could void the user's authority to operate the equipment.
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JWM20