TROUBLESHOOTING
No
audio
and
POWER INDICATOR is off.
• No
voltage
ai
BATT+
an
d/
or REM tem1i
nal
s,
or
bad
or no
grou
nd connecti
on.
Check
voltag
es
at
amp
[
tt
ier
terminal
s
with
VOM
.
No
audio
and
PROTECT INDICATOR flashes every 4
seconds.
~
•
DC
vonage on
amp
l
tti
er o
ut
put. Amplifier may need
se
Ni
ce
;
--
see enclosed warranty card
for
servi
ce
information.
No
audio
and
PROTECT and POWER INDICATORS flash.
•
Vo
ltage
le
ss
than
9V
on
BATT
- connection. Check
vehicl
e
charg
i
ng
syste
m.
No
audio
and
PROTECT INDICATOR is on.
• Amp
lifi
er is
overhe
ated.
Mak
e
su
re
ampl
if
ier
oooling is not
blocked at
mo
unting
location.
Or
, t
here
may be vo
tt
age
greater than
16V
(or less
than
8.
51/)
on
BATT+
connection.
Check
veh
i
cle
charging system.
Am
pli
fier fuse keeps blowing.
• T
he
wi
ri
ng
is connected
inoorre
c
tly
or
th
ere
is a s
hore
circu
rr.
Ch
e
cK
w1
nng
con
n
ec11ons
.
Distorted audio.
•
Gain
Is N
ot
Se
t Prope
rly.
Check
Se
tting. Check
Wires
For
Shorts Or
Gro
unds. Amplifier Or Source U
ni
t
May
Be
De
fective.
Distorted audio and PROTECT INDICATOR flashes.
• Short circuit
in
speaker
or
wi
re
. R
emov
e
sp
eaker
le
a
ds
one at
a ti
me
to locate shorted s
peaker
or
wire,
and
re
pai
r.
M
us
ic lacks
dyna
mi
cs or "punch".
•
Speaker
s
are
not
oonne
cted properly. Che
ck
sp
eaker
oonn
ections for proper po
larit
y.
En
gi
ne
noi
se-wh
i
ni
ng or clicki
ng
- in system
when
the
engine is on.
• Amp
lifi
er is picki
ng
up alternator noi
se
. First, check ground
connection on the amplifier - a loose
or
improper ground is
one of the
ma
in
cau
se
s for n
oise
.
Tu
m dov,n gai
n.
Mov
e R
CA
aud
·o cab!
es
away fr
om
power wi
re
s.
Installing
an alternator
noise
fin
er on power
line
between batteiy and alternator m'ght
al
so
be nec
essary
.
~
HARMAN
~
HARMAN
International
I
ndus
tries,
Incor
porated
8500
Balboa
Bou
'
evard,
No
rtM
dge,
CA
91329
U
SA
w•.vw
.
jbl
.
oom
©
20
19 H
ARMAN
In
ternation
al
Ind
u
stries,
I
ncorporated
.
All
righ
ts
rese
iv
ed
.
JBL
is
a
trad
emark
or
HARMAN
Internation
al
I
ndus
tries
.
lnc0<p0<ated,
reg
'st
ered
in the U
nited
St
ates
and/or othe,
cou
n
tries
. F
ea
tu
res.
spec
t1ic
ati
ons
and
appear
anc
e
ar
e subject to
change
without
notice.