Jensen JBR550 Manuel D’Utilisation

10

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Keep the product dry. If it does get wet, wipe it dry immediately. Liquids might contain 
minerals that can corrode the electronic circuits. 

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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.

The most common source of noise in reception is the ignition system. This is a result of the 
radio being placed too 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 vehicles 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 professional mobile electronics retailers.

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 be received at great 
distance. This is because broadcasting signals follow the curvature of the earth and are 
reflected back by the upper atmosphere.

No power

The vehicle’s accessory 
switch is not on

If the power supply is properly 
connected to the vehicle’s acces-
sory terminal, switch the ignition 
key to “ACC”.

The fuse is blown

Replace the fuse.

Disc cannot be loaded or 
ejected

Presence of CD disc inside 
the player

Remove the disc in the player and 
insert the new one.

Inserting the disc in reverse 
direction

Insert the compact disc with the 
label facing upward.

Compact disc is extremely 
dirty or disc is defective

Clean the disc or try to play a new 
one.

Condensation

Leave the player off for an hour or 
so, then try again.

No sound

Volume is too low

Adjust volume to audible level.

Wiring is not properly con-
nected.

Check wiring connections.

The operation keys do 
not work

Control panel not properly 
installed

Reinstall control panel.

The built-in microcomputer 
is not operating properly 
due to noise

Press the RESET button.

Sound skips

The installation angle is 
more than 30 degrees.

Adjust the installation angle to 
less than 30 degrees.

The disc is dirty or defec-
tive.

Clean the disc and try to play 
again or use new disc.

Cannot tune to radio sta-
tion, auto-seek does not 
work

The antenna cable is not 
connected.

Insert the antenna cable firmly.

The signals are too weak.

Select a station manually.