Jensen JXP680 - Troubleshooting

JENSEN
JXP680
Troubleshooting
Problem
3adio volume needs to be
;r;oykup too hrgh for amp
3adio volume is too sensitive
Sound from only one speaker
Sound distorted
310~s fuses
fngine noise
I nition noise/static or
Afernator whine)
‘rotect light comes on/
amplifier shuts down
Jo output on channels
-
Possible Cause
No power to +12V terminal
Corrective Action
Repair wire or connections.
No power to remote wire with
radro on
Check connections to radio with test light.
Fuse blown 1 Check fuse
Input level control adjusted too low 1 Adjust input level control.
Input level control adjusted too high
I ”
Adjust input level control to lower setting
Defective speaker Replace speaker.
Poor connections to soeaker (wire) 1 Check connections.
RCA input cable defective
input level control adjusted too high
Replace cable.
Adjust input level control.
Speaker wires shorting together 1 Separate speaker wires and insulate.
Power wires hooked up incorrectly
1 Check power wire connections.
Speakers blown or defective
Improper ground connections
Ground loop(s)
Check speakers.
Reroute RCA away from main power wires.
Reroute RCA cable.
Make sure amp is grounded to a clean, solid part of
the chassis/frame.
Amp is in thermal protection Let amp cool down before attempting to turn back on
(some rnstallations may require a fan to keep the amp
cool, especially if you are driving subwoofers with the
amp).
Faulty speaker connection and/or Check speakers and/or crossovers for loose or bad
crossover connectrons.
Low battery voltage
Make sure you are gettin between
10.8-l 5.6 volts to the
amplifier with a digital mu trmeter measured at the amplifier. 9,
Speaker im edance less than 2 ohms
per channe
P
If you are using 4 ohm s
than two speakers wire d?
eakers you cannot have more
In parallel per channel.
Amp will not operate into 2 ohms bridged.
Speaker wires not connected to
speakers properly
Refer to pages 6 - 8 for proper installation
Input hooked up incorrectly
I
12