Interfire Audio D3000.1, D900.1, D1700.1 instruction manual Trouble Shooting Guide

Page 12

TROUBLE SHOOTING GUIDE.

This section provides you with a catalog of amplifier symptoms and their probable causes and solutions. 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

Check remote turn-on voltage at

 

Turn-on connections

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

Use VOM or DVM to measure speaker

 

connected

coil

 

 

impedance; check speaker wiring

 

 

connections

 

 

 

Distorted Audio

Input Sensitivity not set

See adjustment procedure and check

 

properly

each step;

 

or damaged speaker cones

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 circuit on head

Check electrical system for low

 

unit is on.

voltage;

 

 

Check ground connection

 

 

 

Audio Lacks

Speakers wired with wrong

Check polarity of wires from

 

polarity, causing

amplifiers to each speaker as defined

 

cancellation of bass

by the system design

 

frequencies

Check battery voltage at amplifier

 

 

during operation

 

 

 

External Fuse

Incorrect wiring or short

Refer to electrical installation and

Blowing

circuit

check each installation step

 

 

 

Whining noise

Amplifier is picking

Install an in-line noise filter on the

on audio with

up alternator noise

head unit's power wire; Check

engine running

 

alternator routing diodes or voltage

 

 

regulator for proper operation. Check

 

 

all grounds , battery voltage, and

 

 

RCA cables

 

 

 

Ticking noise on

Amplifier is picking up

Check RCA audio cable; Install an

audio with

radiated spark noise

in-line noise filter on the head unit's

engine

 

power wire. Check spark plug wires.

running

 

 

 

 

 

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Contents Mono Channel Class D Automotive Amplifier Page Features Congratulations on Your PurchaseInstallation Installation DiagramSpeaker Wiring Mono Bridged Battery VIA Fuse Slave Power Supply Connections Recommended Power WireOperation Control and CrossoverFRONT/REAR Panel Trouble Shooting Guide Specification Page Page Interfire Audio, Inc