DLS ACW10, Руководство пользователя

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10
Troubleshooting Testing
lf you experience operation or performance problems with this product, com-
pare your installation with the electrical wiring diagram on the previous pages.
lf problems persist, read the following troubleshooting tips which may help
eliminate the problems.
Check to make sure you have a good ground connection.
Check that the Remote lnput {Turn-On) has at least 5VDC.
Check that there is battery power on the (+) terminal.
Check that there is at least 12v.
Check all fuse, replace if necessary.
Make sure that the Protection LED is not illuminated. lf it is
lit, shut off the amplifier briefly, and then repower it.
Amplifier will
not power up
.
Protection LED
comes on when
amplifier is powered
up.
Check for short circuits on speaker leads.
Tum down the volume control on the head unit to prevent
overdriving. Remote speaker leads, and reset the
amplifier. lf the Protection LED still comes on, then the
amplifier is faulty and needs servicing.
No output.
Check that all fuses are OK.
Check that unit is properly grounded.
Check that the Remote lnput {Turn-On) has at least
5VDC. Check that the RCA audio cables are plugged in
to the proper inputs. Check all speaker wiring.
Low output .
Reset the Level control.
Check the crossover control settings.
High hiss in the sound.
Disconnect all RCA inputs to the power sub’s control
panel. lf the hiss disappears, then plug in the component
driving the amplifier and unplug its inputs. if the hiss
disappears at this point, go on until the faulty noisy
component is found. It is best to set the amplifier’s input
level control as low as possible. The best subjective
signal-to-noise ratio is achieved in this manner. Try to set
the head unit as high as possible
Engine noise.
(static type)
This is usually caused by poor quality RCA cables, which
can pick up radiated noise. Use only the best quality
cables, and route them away from power cables.
Engine noise.
(alternator whine) Check that the RCA grounds are not shorted to the
vehicle chassis Check that the head unit is properly
grounded.
Amplifier gets very hot.
Check that there is good air circulation around the amp. In
same applications, it may be necessary to add and
external cooling fan.