GTD
‐
LM1506
User
Manual
16
Troubleshooting
Problem
Possible
Cause
Suggested
Correction
No
response
after
connected
to
A/C
power
Power
switch
not
turned
on.
Turn
on
power
switch.
Take
out
the
fuse
and
check
if
it
is
blown.
Locate
the
blown
fuse.
Remove
the
broken
fuse.
Insert
a
replacement
fuse
of
the
correct
amperage.
Abnormal
A/C
input
(A/C
power
socket,
power
cables,
luminaire
power
socket).
Replace
AC
power
socket
and
power
cables,
and
then
adjust
power
socket
for
proper
connection.
No
DC
voltage
from
switching
power
supply.
Check
if
the
switching
power
supply
has
DC
voltage
output.
Replace
the
switching
power
supply.
No
response
or
wrong
response
to
the
commands
of
the
control
system
DMX
cables
disconnected
from
fixture’s
DATA
IN
connector.
Connect
DMX
cable
to
the
fixture’s
DATA
IN
connector.
Open
circuit
or
short
circuit
fault
in
the
DMX
cables.
Replace
DMX
cables
as
required.
Wrong
DMX
address
for
the
fixture
in
the
control
system.
Ensure
the
address
in
“Run
setting
>
Address
Setting
>
Address”of
the
fixture
is
consistent
with
the
address
in
the
control
system.
Misuse
in
“Channel
setting
>
Channel
Mode”
of
the
fixture.
Choose
the
channel
mode
in
“Channel
setting
>
Channel
Mode”
of
the
fixture
as
required
by
the
user.
Malfunctioning
of
DMX
cannon
input
/output
connectors.
No
input/output
voltage
to
the
main
control
board
of
the
fixture.
Troubleshooting
the
DMX
XLR
signal
plate
of
the
fixture,
replace
the
main
control
board
of
the
fixture.
LED
lamp
off
There
is
no
signal
output
to
the
main
control
board
PWM.
Replace
the
main
control
board
or
repair.
No
output
to
the
drive
board
LED
+/
LED
‐
or
drive
board
over
‐
current,
check
line
connector
if
contact
bad.
Reconnect
the
terminal,
replace
the
driver
board
Normal
end
of
LED
lamp
life,
bad
welding
or
poor
heat
dispersion.
Repair
or
replace
LED
light
source
or
replace
the
whole
piece
of
aluminum
board,
remove
the
cooling
system
failure.
Decreased
brightness,
uneven
pattern
projections
LED
lamp
aging,
check
the
service
time
of
LED
light
source,
test
LED
drive
board’s
current.
Replace
the
LED
light
source
or
adjust
the
drive
board’s
current.
Reduce
LED’s
brightness.
Excessive
dusts
or
smudges
on
the
effect
assembly,
focus
module
and
objective
lens.
Follow
the
instructions
stated
in
this
user
manual
to
clean
the
effect
assembly,
focus
module
and
objective
lens.
Damaged
or
deformed
effect
assembly,
focus
module
or
objective
lens.
Replace
the
damaged
or
deformed
components.
