Installation - JBL MR-18.5 Operation Manual

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 BAND and Preset 1 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
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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.

Installation

1. Precautions
Choose the mounting location carefully so that the unit will not interfere with the normal
driving functions of the boat.
Avoid installing the unit where it would be subject to high temperature (such as from direct
sunlight or hot air) or where it would be subject to dust, dirt or excessive vibration. Use only
the supplied mounting hardware for a safe and secure installation.
2. Mounting angle adjustment
Adjust the mounting angle to less than 20 degrees from the horizontal position. Otherwise,
the unit will skip beyond its intended level.
3. Supporting the unit
Failure to support the unit with the back bracket will reduce the life of the unit due to
possible CD mechanism imbalance.
1. UNIT
2. HEX NUT
3. SPRING WASHER
4. PLAIN WASHER
5. BODY
6. REAR SUPPORT STRAP
7. TAPPING SCREW
8. M5 X 20 HEX BOLT
Accessories subject to change without notice.
1. Fuse replacement
If the fuse blows, check the power connection and replace the fuse. If the fuse blows
again after the replacement, there may be an internal malfunction. In this case, consult
your nearest dealer.
2. Warning
Use the specified amperage fuse for each lead.
Use of a higher amperage fuse may cause serious damage.
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