Troubleshooting - Jensen JA Series Owner's Manual

JENSEN
JA SERIES
Troubleshooting
Problem Cause Adion
+
12V wire not connected or incorrect
Check connections for proper voltage
Unit will not tum on
voltage. REM wire not connected or
(11
~
16VDC)
(no power
LED
incorrect voltage
indicator) GND wire not connected Check connection to ground
Fuse(s) blown Replace fuse(s)
Speaker wires not connected Check connections at speakers
Volume turned all the way down Increase volume level at head unit
Unit has power -
One or more speaker wires touching Insulate all bare speaker wires from
LED is green (but
each other or touching chassis ground each other and chassis ground
no sound)
Speaker(s) defective or damaged Check/replace speaker(s)
Input signal not connected
Check high or low level inputs for
proper connection
Incorrect fuse rating Use fuse(s) with correct rating
Unit blows fuse(s) +
12V wire touching chassis ground Check for pinched wire
Speaker(s) defective or damaged Check/replace speaker(s)
Bad ground connection
Make sure amplifier is grounded to
clean bare metal
Engine noise
Signal ground loop or RFI (radio Re-route RCA cables from existing high
frequency interference)
current wiring
One or more speaker wires touching Insulate all bare speaker wires from
each other or touching chassis ground each other and chassis ground
LED illuminates red
Speaker(s) defective or
Check/replace speaker(s)
(protect mode)
damaged internally (shorted)
Adjust speaker load - amplifier will
Speaker load less than 2 ohms (stereo).
Speaker load less than 4 ohms (bridged)
not operate at less than 4 ohms when
bridged
Distorted audio
Incorrect input signal type or Check connections and reduce/adjust
output input level too high input level
Low audio output
Incorrect input signal type or Check connections and increase/adjust
input level too low input level