Troubleshooting - Dual DA10004D Installation And Owner's Manual

Problem
Unit will not turn on
(no power LED
indicator)
Unit has power -
LED is green (but
no sound)
Unit blows fuse(s)
Engine noise
LED illuminates red
(protect mode)
Distorted audio
output
Low audio output
INSTALLATION

Troubleshooting

Cause
+12V wire not connected or incorrect
voltage. REM wire not connected or
incorrect voltage
GND wire not connected
Fuse(s) blown
Speaker wires not connected
Volume turned all the way down
One or more speaker wires touching
each other or touching chassis
ground
Speaker(s) defective or damaged
Input signal not connected
Incorrect fuse rating
+12V wire touching chassis ground
Speaker(s) defective or damaged
Bad ground connection
Signal ground loop or RFI (radio
frequency interference)
One or more speaker wires touching
each other or touching chassis
ground
Speaker(s) defective or
damaged internally (shorted)
Speaker load less than 2 ohms
(stereo). Speaker load less than 4
ohms (bridged)
Incorrect input signal type or
input level too high
Incorrect input signal type or
input level too low
Action
Check connections for proper voltage
(11~16VDC)
Check connection to ground
Replace fuse(s)
Check connections at speakers
Increase volume level at head unit
Insulate all bare speaker wires from
each other and chassis ground
Check/replace speaker(s)
Check high or low level inputs for
proper connection
Use fuse(s) with correct rating
Check for pinched wire
Check/replace speaker(s)
Make sure amplifier is grounded to
clean bare metal
Re-route RCA cables from existing
high current wiring
Insulate all bare speaker wires from
each other and chassis ground
Check/replace speaker(s)
Adjust speaker load - amplifier will
not operate at less than 4 ohms
when bridged
Check connections and reduce/
adjust input level
Check connections and increase/
adjust input level
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