Troubleshootlng - Lanzar MXA224 Owner's Manual

troubleshootlng

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Confirm that all terminal strip connections are secure and tight.
protection
Check both in-line and built-in fuses. Both the+ 12Vand the Remote terminals must have +12v referenced to chassis
ground.
circuitry
Confirm that the audio signal source (car radio, equalizer, etc.) is connected and is supplying output signal. To
check ii the amp is supplyin9 signal, un
The built-in protection circuitry in the Lanzar
MAX
amp). Briefly tap the center pin ol each o the disconnected RCA plugs with your finger. This should produce a noise
Series amplifiers will disable the amplifier if it senses
(feedback) in your speakers.
an input overload, a speaker short circuit, or extreme
temperature conditions.
When the protection circuit is activated by any of
Check the Balance control on the head unit (or other source) to verify that it is set to its midpoint.
these conditions, the Protection LED will be
illuminated.
If you are using the Low Level RCA input, reverse the input plugs at the amplifier (i.e., switch the
the channels which is silent switches to the other side, the problem is either in the head uniVother source or the
If this occurs, carefully inspect the system to
connecting cables.
determine the source of the problem.
Vll a kautp11t.
Readjust the Input Level Control(s) to better suit the input signal.
If the shutdown was a resu It of a thermal overload
•
condition, allow the amplifier to cool down before
Noise In tllll audio.
attempting to restart it.
If the noise is a "whine" whose pitch follows the engine speed, confirm that the amplifier and any other signal
sources (head unit, etc.) are properly grounded.
If the shutdown was a result of an input overload,
• If the noise is a "clicking" or "popping· noise whose rate follows the engine speed, this usually means that the
or speaker short circuit, be sure to correct the
vehicle is equipped with resistor spark plugs and wires, or that the ignition is in need of service.
condition before restarting.
Check the rounting of the speaker and input wires to make sure they are not adjacent to wires which interconnect
The amp I if ier can be restarted by turning the remote lights and other <K:cessories.
power and then again.
ON
If the above steps fail to if11lrove or clear noise interference, the system should be checked by a professional mobile
audio installer.
LanHr MAX OWlll!R'S MANUAL
autput.
r
lug the cables from the signal source (but leave them plugged into the
precautions
Do not operate the amplifier when it is unmounted.
Atta c h all audio system components securely within
the automobile to prevent damage, especially in an
accident.
Do not mount this amplifier so that the wire
connections are unprotected, or in a pinched
condition, or likely to be damaged by nearby objects.
Before making or breaking power connections in
L with the R). If
your system, disconnect the vehicle battery. Confirm
that your head unit or other equipment is turned off
while connecting the input jacks and speaker
terminals.
If you need to replace the power fuse, do so only
with a identical to that supplied with the amplifier.
fuse
Using a fuse of a different type or rating may result
in damage that isn� covered in the manufacturer' s
warranty.
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will prm•nt • 4-ohm k:J.d to aach to • bridgad two-channel .,.lil'i•r.
channel of II• ampllner. Molt two­ will preMl'lt • 2-ohm mono lo9c:I to l'I•
channol ampltnor9 wlll wort: well � thla amplifier. llOSl''T'WGOL\Nl l l L
AMPUFllM DO NOT IUl'POKI' 1-otl•
configuration.
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apellkers. wired stereo, •P•kel'9,
Four 4-ohm In Faur 4-ohm wr.d I• p..ilel
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wll pretent • 4-ohm load el.Ch to• bridged fuur-chenn.i 81"11 p llter,
channel DI the ampllller. MOii rour­ wlll p.... ., t • 4-ohm mona kJad ta th•
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t:hannel 11T1pllflens w111 wor1I:: well In Ulle mipllller. FOUR-CHAMllL
canfigurm.tion. All PU'EIUI DO NOT IUPl'arT SGH•
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Lanzar MAX OWNER'S MANUAL