Troubleshooting - JBL A6000GTi Owner's Manual

TROUBLESHOOTING

SYMPTOM LIKELY CAUSE
No audio No voltage at power
(Power LED is off) or remote terminal
Internal fuse blown
(incorrect power
connections)
No audio Low or high voltage
(Power LED at power terminal
is flashing)
No audio Direct current on
(Power and speaker output(s)
Fault LEDs
are on)
No audio Internal amplifier
(Power and temperature is over
Thermal LEDs 85° C
are on)
Distorted audio Amplifier's gain is
(I OPT and/or set to High
E OPT LED[s]
are on more
than off)
Distorted audio Defective source unit
(I OPT and/or
E OPT LED[s] Shorted speaker
work correctly) wires
Music lacks Speakers are out
"punch" of phase
Wrong output mode
Neon tubes do No voltage to neon tubes
not light for +12 Vdc
Neon tubes are dead
SOLUTION
Check BATT+, REMOTE and
A6000GTi
GND – terminals with VOM for
blown fuse or poor connection
Replace internal fuse
(see Replacing the Fuse
or Neon Tubes section)
Check BATT+ terminal with
VOM for voltage between
A3000GTi
10 and 16 Vdc; if not within
limits, check vehicle's
electrical system
Disconnect cable from
REMOTE terminal; if Fault LED
is still on, contact local JBL
service center Figure 18. Display indicates Power Output and Protection status.
Check for blocked vents
or whether the ambient
temperature is above 85° C
Properly adjust the
LEVEL control (see
Setting Input
Sensitivity section)
Try new source unit
Disconnect wires from
SPEAKER OUTPUTS and
check for shorts between
wires, or between a wire and
the vehicle's chassis
Check speaker connections
(see sections on speaker
connections)
Verify output mode setting
(see Making the Connections
section)
Check LIGHTING
terminal with VOM
Replace neon tubes
(see Replacing the Fuse
or Neon Tubes section)
Power
6000 Watts Parallel Bridge
Thermal Signal -18 dB -9 dB E Opt I Opt Fault
3000 Watts Parallel Bridge
CH 1 Power
Thermal Signal -18 dB -9 dB E Opt I Opt
CH 2 Fault
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