Read JBL GTS 600 (serv.man2) User Guide / Operation Manual online
Power On light is blinking,
indicating a fault condition,
and sound is intermittent or
off
indicating a fault condition,
and sound is intermittent or
off
Alternator whine through
the audio system with the
engine running
the audio system with the
engine running
Bass output from speakers
too low
too low
• Defective GTS300 or GTS600; If there is
audio signal present at the input of the
amplifier and there is no output, the
GTS300 or GTS600 may be defective.
amplifier and there is no output, the
GTS300 or GTS600 may be defective.
• Incorrectly connected or shorted
speaker wires; check for shorts, frayed
wiring, damaged wiring insulation or
incorrect wiring.
wiring, damaged wiring insulation or
incorrect wiring.
• The speaker combination connected to
the amplifier is less than the minimum
requirement; reconfigure speaker
connection after consulting with section
3.1 “Speaker Requirements.”
requirement; reconfigure speaker
connection after consulting with section
3.1 “Speaker Requirements.”
• Amplifier is damaged; consult your JBL
Dealer.
• Ground loops; verify that the chassis
grounding point you have chosen is
true ground by checking for continuity
between the chassis ground point and
battery ground.
true ground by checking for continuity
between the chassis ground point and
battery ground.
• Speaker wired out of phase; check for
proper polarity on all speaker wiring (+
amp terminal to + speaker terminal and
– amp terminal to – speaker terminal).
amp terminal to + speaker terminal and
– amp terminal to – speaker terminal).
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