UPA224/UPA424

TESTING/TROUBLESHOOTING.

Before finishing the installation, perform the following tests to make sure the wiring is correct and everything is operating properly.

Reconnect Battery

When wiring is complete, reconnect the battery negative terminal.

Test Power Wiring

Turn on the receiver, but do not turn up the volume. The amplifier power light should come on. If not, check the REM and +12V wires. Turn up the receiver volume slightly. All speakers should operate. If not, check wiring connections at amplifier and speakers.

Test Speaker Connections

These tests make sure the speakers are connected properly. If speakers don’t play at all, one (or both) speaker wires may be disconnected.

Troubleshooting

Problem

Possible Cause

Corrective Action

 

 

 

Amplifier does not

No power to +12V terminal

Check fuse(s)

turn on

 

 

No power to REM terminal

Check head unit fuse(s) and wiring

 

 

 

 

 

Blown main fuse at battery

Replace fuse and identify cause of failure

 

 

 

 

Blown fuse at amplifier

Replace fuse and identify cause of failure

 

 

 

 

Faulty ground

Reground main power ground to bare metal chassis

 

 

 

Volume control too

Input level control adjusted too

Readjust the input level

sensitive

high

 

 

 

 

Distorted sound

Input level control adjusted too

Readjust the input level

 

high

 

 

 

 

Blows fuse(s) at

Power wires connected backwards

Reconnect power wires properly

amp

 

 

Internal problem with amp

Take unit for service

 

 

 

 

Engine noise /

Ground loop(s)

Use good quality shielded RCA cables

Alternator whine

 

 

Faulty ground at amp

Reground amp to clean bare metal chassis

 

 

 

 

 

Faulty ground at head unit

Reground head unit to clean bare metal chassis

 

 

 

 

Inductive coupling

Reroute RCA and/or speaker wires away from factory

 

 

harnesses

 

 

 

 

Input level on amp set too high

Readjust input level

 

 

 

Poor bass response

Speakers out of phase

Check speaker polarity; reverse the connection to one

 

 

speaker only if two subwoofers are connected to the

 

 

amplifier.

 

 

 

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Audiovox UPA424, UPA224 owner manual Testing/Troubleshooting, Reconnect Battery, Test Power Wiring, Test Speaker Connections

UPA224, UPA424 specifications

Audiovox, a prominent name in the automotive electronics industry, has introduced the UPA424 and UPA224, two advanced mobile multimedia platforms designed to enhance in-car entertainment experiences. These units integrate cutting-edge technology and user-friendly features, making them ideal choices for both casual listeners and audiophiles alike.

The Audiovox UPA424 and UPA224 are equipped with high-resolution touch screens, providing crisp and vibrant visuals that enhance user interaction. The sleek interface offers intuitive navigation, allowing users to quickly access their music, navigation, and phone functions with ease. Both models support a variety of media formats, ensuring compatibility with a wide range of audio and video files, from MP3 to modern streaming services.

One of the standout features of both the UPA424 and UPA224 is their Bluetooth connectivity. This allows users to easily pair their smartphones for hands-free calling and wireless music streaming, making it safer and more convenient to enjoy media while driving. The built-in microphone ensures clear voice quality during calls, enhancing communication on the go.

Additionally, both models come with FM/AM radio capabilities, further expanding listening options for users. The UPA424 takes it a step further by offering features such as an integrated DVD player, allowing occupants to enjoy their favorite films during long road trips. Both systems support video output, enabling playback on external screens, which can be particularly appealing for family outings.

In terms of audio performance, Audiovox has incorporated advanced sound processing technologies into both units. Features like EQ settings and various audio enhancements allow users to tailor their sound experience to their preferences. Furthermore, the UPA424 comes with additional amplification options, providing robust sound quality that can fill even larger vehicles.

Installation of both the UPA424 and UPA224 is designed to be straightforward, thanks to their user-friendly mounting systems and comprehensive installation guides. Audiovox ensures that even the most novice users can integrate these systems into their vehicles with minimal effort.

In conclusion, the Audiovox UPA424 and UPA224 represent the pinnacle of in-car multimedia technology. With their impressive feature sets, user-friendly interfaces, and exceptional audio and video quality, these systems are well-suited for enhancing any driving experience. Whether for business or leisure, Audiovox provides an innovative solution for modern mobile entertainment.