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JBL JBLMR18.3 Troubleshooting Manual page 3

Marine cd player

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2.0 Compatible Accessories: See our website for the following add on accessories
SEAMINI
JBLREM20 – DIN-AMP adapter required
SEAMINI or SEAMINI2 – RCA to 3.5mm head phone jack
JBLREM21 – DIN-AMP adapter required
JBLREM25 – DIN-AMP adapter required
JBLREM30 – DIN-AMP adapter required
Sirius SCC1 tuner- we don't sell
JBLREM35- we no longer sell
JBLREM40- DIN-AMP adapter required
JBLREM45
JBLMC19
JBLMC18/18.3-we no longer sell
MIL-BTREC
Any 4 channel amp OR 2 channel amp and subwoofer
Remote adapter and extensions
REX20-13 remote extension – fits REM35 and REM45, MC-19 and REXW-13.2
REXW-13.2– three way splitter for REM35/45, MC-19 and REX20-13
3.0. List of common issues
3.1 No Power
Check each button on the control pad for sticking. Under normal conditions, a faint click is heard upon pressing each
button. If any button does not click, initiate a warranty claim.
Ensure red and yellow leads are connected to a good 12V+ source. Both must have power for the radio to turn on.
Ensure black ground wire is connected to a good reliable ground source.
Open the fuse holder and check the fuse. Note, while in most situations, a bad fuse can be spotted visually, this may
not always be the case. The best method would be to use a multi-meter or a test light.
Ensure the battery/power supply is putting out at least 12V while under load. The radio requires at least 11.5V to
operate normally.
Check all connections for corrosion, looseness, or other condition that can produce a bad ground. Corrosion or
terminal looseness is the leading cause for most grounding issues and can cause excessive heat resulting in melting
wires or terminals.
Unplug any remotes or extension from the back of the stereo to determine if the root cause is with another
component.
3.2 Intermittent Power
3.2.1 Powers on and off constantly
Check voltage under load. At least 11.5V must be maintained consistently to operate the radio normally.
If voltage cannot be maintained, load test the battery or power supply.
Check all connections for corrosion, looseness, or other condition that can produce a bad ground.
3.2.2 Powers off and on while vehicle is moving
• Inspect all connections including the radio's harness for looseness. Wiggle connections while the radio is operating
to produce the symptom and narrow down the loose connection. If radio cuts in and out while wiggling the wires on
the radio side of the wire harness, initiate warranty claim.

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