SoundMax SM-SA1004 - Инструкция (Страница 12)

12
Fig. 5
Troubleshooting Guide
Before you consult this listing, make sure the vehicle’s electrical system is working properly by verifying
that other electrical items (e. g. headlights, Windows, etc.) still function correctly.
SYMPTOM PROBABLE CAUSE SOLUTION
No audio
Low or N.C. remote turn-on connections
Check remote turn-on voltage at amp and head
unit
Blown fuse Replace with new fast-blow fuse
Power wires not connected
Check butt splices or solder joints;
Check ground and battery connections
Blown or non-speakers connected
Use VOM or DVM to measure speaker coil
impedance; check speaker wiring connections
Distorted audio
Input sensitivity not set properly or
damaged speaker cones
See adjustment procedure and check each step;
inspect each speaker for damage and repair or
replace suspected component
Low turn-on voltage Refer to head unit owner’s manual
Audio level low Mute circuits is on head unit
Check electrical system for low voltage;
Check ground connection
Audio lacks
Speakers wired with wrong polarity,
causing cancellation of bass frequencies
Check polarity of wires from amplifiers to each
speak as defined by the system design;
Check battery voltage at amplifier during
operation
External fuse
blowing
Incorrect wiring or short circuit
Refer to electrical installation and check each
installation step
Whining noise on
audio with engine
running Amplifier is picking up alternator noise
Install a line noise filter on the head unit’s power
wire;
Check alternator routing diodes or voltage
regulator for proper operation. Check all
grounds, check battery voltage, check RCA
cables
Ticking noise on
audio with engine
running
Amplifier is peaking up radiated spark
noise
Check RCA audio cable; Install an in-line noise
filter on the head unit’s power wire, check spark
plug wires
Protection LED (right
color) light up when
the amplifier is
powered up
Incorrect impedance
Incorrect wiring or short circuit
Airflow around the amplifier is not
enough
Check if the minimum impedance is correct for
this model.
Check the speaker shots.
Check the airflow around the amplifier. More
space is required.