Read JBL BASSPRO (serv.man6) User Guide / Operation Manual online
TROUBLESHOOTING
PROBLEM
CAUSES AND SOLUTIONS
POWER LED not lit.
1. Fuse is blown and needs
replacement.
2. Head unit not functioning properly.
3. Check remote turn-on, power and
3. Check remote turn-on, power and
ground connections.
POWER LED is lit but there is no bass.
1. Inputs are not connected. Check
connections.
2. Head-unit fader controls are not set
properly. Adjust head-unit controls to
feed audio signals to BassPro.
feed audio signals to BassPro.
3. Incorrect GAIN control setting.
Output sounds muddy or distorted.
1. GAIN is set too high.
2. Bass level is set too high on head
2. Bass level is set too high on head
unit.
3. Head unit output is distorted or
blown. See your authorized JBL car
audio dealer.
audio dealer.
Output gets louder when the head-unit
Using speaker-level connection: one of
balance is adjusted to L or R.
the speaker connections is reversed
(+/–). Reverse one channel.
(+/–). Reverse one channel.
POWER LED remains ON after system
Speaker-level connections have a five-
is turned off.
minute turn-off delay. Check the unit at
a later time.
a later time.
7
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