Wiring Identification - JBL MR-145.3 Operation Manual

Wiring Identification

12P CONNECTOR
ANT. Socket
FUSE
BLUE
(AUTO ANT) 1A
FUSE
RED
( ACC )
10A
BLACK
( GROUND )
WHITE
( FRONT LEFT )
WHITE/BLACK
GREEN
( REAR LEFT )
GREEN/BLACK
Installation Notes
(Applicable to both 2 and 4 speaker connection)
This radio contains four separate power amplifiers. To prevent possible damage
to these amplifiers please ensure the following:
i) The boat chassis is not used as a loudspeaker ground(-).
ii) Front and rear loudspeaker connecting wires are not joined together.
iii) Any wires not used when completing a two speaker installation are fully insulated.
Iv) The power wire (red) is connected via the ignition switch of the boat.
2
(USB)
RED
WHITE LINE OUT
12P CONNECTOR
GRAY
( FRONT RIGHT )
GRAY/BLACK
VIOLET
( REAR RIGHT )
VIOLET/BLACK
Trouble shooting Guide
Caution
1. CONNECTOR PINS: Always keep connector pins clean.
If the PIN connector looks dirty, use cotton tips to clean it, so as to avoid any unexpected
malfunction caused by dirt.
2. In many respects, a stereo acts much like a computer and occasionally requires a reboot.
In the unlikely event of product malfunction, a reset can usually fix the issue.
A reset is accomplished by holding the MODE and BD/LD button simultaneously
until the unit turns off.
Cause
Issue
1. Incorrect wiring
No power
2. Fuse is blown
3. Low battery voltage
1. Speaker connection
No Sound
came loose
2. Bad speaker
3. Output blown
4. Volume too low on
media device
1. Antenna not firmly
No Reception
seated in socket
1. File must be a mp3
USB stick not
or wma file
reading
Solution
1. Double check wiring
2. Replace fuse
3. Check voltage of vehicle battery
with multimeter. Voltage must
be at least 11V.
1. Double check connections.
2. Replace bad speaker with known
good speaker and connect.
3. Send unit in for repair.
4. Increase volume of media device
1. Insert firmly
1. Convert format to mp3 or wma.
15