JVC KW-AVX746 - User Manual

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RM-RK252

30˚

Parts list for installation and connection

The following parts are provided for this unit.

If anything is missing, contact your dealer immediately.

KW-AVX746

Installation/Connection Manual

This unit is designed to operate on 12 V DC, NEGATIVE ground electrical systems. If your

vehicle does not have this system, a voltage inverter is required, which can be purchased at JVC

car audio dealers.

WARNINGS

• DO NOT install any unit or wire any cable in a location where;

– it may obstruct the steering wheel and gearshift lever operations, as this may result in a traffic

accident.

– it may obstruct the operation of safety devices such as air bags, as this may result in a fatal

accident.

– it may obstruct visibility.

• DO NOT operate any unit while manipulating the steering wheel, as this may result in a traffic

accident.

• The driver must not watch the monitor while driving. It may lead to carelessness and cause an

accident.

• If you need to operate the unit while driving, be sure to look around carefully or you may be

involved in a traffic accident.

• If the parking brake is not engaged, “Parking Brake” appears on the monitor, and no playback

picture will be shown.

– This warning appears only when the parking brake lead is connected to the parking brake

system built in the car.

To prevent short circuits, we recommend that you disconnect the battery’s negative terminal and

make all electrical connections before installing the unit.

• Be sure to ground this unit to the car’s chassis again after installation.

• Be sure any cable is not caught on the car’s chassis or under seats.

Notes on electrical connections:

• Replace the fuse with one of the specified rating. If the fuse blows frequently, consult your JVC

car audio dealer.

• It is recommended to connect speakers with maximum power of more than 50 W (both at the

rear and at the front, with an impedance of 4  to 8 Ω).

If the maximum power is less than 50 W, change <Amplifier Gain> setting to prevent the

speakers from being damaged (see page 38 of the INSTRUCTIONS).

• To prevent short circuits, cover the terminals of the UNUSED leads with insulating tape.

• The heat sink becomes very hot after use. Be careful not to touch it when removing this unit.

• At the time of installation, be sure to fix all wires

(wires both from this unit and from the car itself) in a

way that any wires cannot come into contact with heat

sinks on the rear and side of the unit.

Heat sink

LVT2178-002A

[A]

0111NYMMDWJEIN

Round head

screws

(M5 x 8 mm)

Flat head screws

(M5 x 8 mm)

Main unit

Power cord

Batteries

Remote controller

Crimp connector

Monitor panel and soft case

INSTALLATION (IN-DASH MOUNTING)

The following illustration shows a typical installation. However, you should make adjustments corresponding to

your specific car. If you have any questions or require information regarding installation kits, consult your JVC

car audio dealer or a company supplying kits.

• If you are not sure how to install this unit correctly, have it installed by a qualified technician.

Before installing the unit

• When mounting the unit, be sure to use the screws provided, as instructed. If other screws are used, parts could

become loose or damaged.

• When tightening screws or bolts, be careful not to pinch any connection cord.

• Make sure not to block the fan on the rear to maintain proper ventilation when installing the unit.

1 Remove the audio system originally installed in the car, together with its mounting brackets.

• Be sure to keep all the screws and parts removed from your car for future use.

2 Attach the mounting brackets (removed from the car) to this unit (see below).

• Use flat head screws or round head screws, depending on installation location.

• When you need to use round head screws, use the supplied screws and the screws used to attach the metal

protection plates to the unit when shipped.

3 Do the required electrical connections.

• See “ELECTRICAL CONNECTIONS” on pages 1 and 2.

4 Install this unit using the screws removed in step 1.

5 Attach the monitor panel (see below).

Install the unit at an angle of

less than 30˚.

Connecting the parking brake lead

Parking brake

Parking brake switch

(inside the car)

Parking brake lead

(light green)

To metallic body or

chassis of the car

Crimp

connector

ELECTRICAL CONNECTIONS

PRECAUTIONS on power supply and speaker connections:

• DO NOT connect the speaker leads of the power cord to the car battery; otherwise,

the unit will be seriously damaged.

• BEFORE connecting the speaker leads of

the power cord to the speakers, check the

speaker wiring in your car.

TROUBLESHOOTING

Supplied

screws

Mounting bracket removed

from the car

Screws removed from the car in step 1

Supplied screws

Select the

appropriate type

fitting to your

audio system space.

Monitor panel

If necessary, restore the

protruding tabs.

When installing the unit in a Nissan car

If your Nissan car needs a plate, purchase the plate separately.

Plate for use with a

Nissan car (not supplied)

Step 5

• When you use screws other than those

supplied, use 8 mm-long screws. If

longer screws are used, they could

damage the unit.

• Tighten the screws firmly to prevent

the unit from falling off.

Locate the reverse lamp lead in the trunk.

Extension lead (not supplied for this unit)

Purple with

white stripe

Reverse lamps

To reverse lamps

Reverse lamp lead

Connecting the reverse gear signal lead (for rear view camera)

Crimp connector (not supplied

for this unit)

• The fuse blows.

* Are the red and black leads connected

correctly?

• Power cannot be turned on.

* Is the yellow lead connected?

• No sound from the speakers.

* Is the speaker output lead short-circuited?

• Sound is distorted.

* Is the speaker output lead grounded?

* Are the “–” terminals of L and R speakers

grounded in common?

• Noise interfere with sounds.

* Is the rear ground terminal connected to

the car’s chassis using shorter and thicker

cords?

• This unit becomes hot.

* Is the speaker output lead grounded?

* Are the “–” terminals of L and R speakers

grounded in common?

• This unit does not work at all.

* Have you reset your unit?

Remove the metal protection plates from the unit before installation.

• Keep the round head screws (M5 x 8 mm) used to attach the metal protection plates. You

may need to use the screws for installation.

The following example is for installation in a Toyota car. For more details, consult your JVC car audio dealer.

Bag for storing the adapterMicrophoneBluetooth adapter

(inserted)

KS-UBT1

Extension lead

1-2_KWAVX746[A].indd 11-2_KWAVX746[A].indd 1 11.1.24 3:01:57 PM11.1.24 3:01:57 PM

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Summary

General Safety Warnings

Driver Operation Safety

Warnings against obstructing steering, gearshift, or safety devices, and not operating while driving.

Parking Brake Engagement

Note on 'Parking Brake' display and no playback if the parking brake lead is not connected.

Installation Safety Precautions

Advice on disconnecting battery, grounding, and securing wires to prevent shorts and damage.

Power Supply and Speaker Connections

Connection Warnings

Crucial warnings about not connecting speaker leads to the car battery and checking speaker wiring.

Installation Parts and Troubleshooting

Troubleshooting Common Issues

Addresses common problems such as blown fuses, no sound, distorted audio, and unit malfunction.

Electrical Connections

Power Cord and Harness Connections

Instructions for connecting the power cord leads, antenna cord, and wiring harness.

Ground and Ignition Connections

Summary

General Safety Warnings

Driver Operation Safety

Warnings against obstructing steering, gearshift, or safety devices, and not operating while driving.

Parking Brake Engagement

Note on 'Parking Brake' display and no playback if the parking brake lead is not connected.

Installation Safety Precautions

Advice on disconnecting battery, grounding, and securing wires to prevent shorts and damage.

Power Supply and Speaker Connections

Connection Warnings

Crucial warnings about not connecting speaker leads to the car battery and checking speaker wiring.

Installation Parts and Troubleshooting

Troubleshooting Common Issues

Addresses common problems such as blown fuses, no sound, distorted audio, and unit malfunction.

Electrical Connections

Power Cord and Harness Connections

Instructions for connecting the power cord leads, antenna cord, and wiring harness.

Ground and Ignition Connections

The JVC KW-AVX746 is an in-dash multimedia receiver designed for automotive use, operating on a 12 V DC, negative ground electrical system. It serves as a central hub for audio, video, and communication within a vehicle, offering a range of connectivity options and features.

Function Description:

The KW-AVX746 functions as a comprehensive car audio and video system, capable of playing various media formats, displaying video content on its monitor panel, and integrating with external devices such as amplifiers, subwoofers, navigation units, rear-view cameras, iPods/iPhones, and Bluetooth adapters. It supports both audio playback and video display, with safety features that restrict video playback when the parking brake is not engaged. The unit also includes provisions for steering wheel remote control integration, allowing for convenient operation while driving. Its design emphasizes user safety and system reliability, with specific warnings and precautions regarding installation and operation.

Important Technical Specifications:

Power System: 12 V DC, negative ground electrical system. For vehicles without this system, a voltage inverter is required.
Fuse Rating: The unit requires a fuse of the specified rating (e.g., 10 A fuse indicated in the wiring diagram). Frequent fuse blows suggest consulting a JVC car audio dealer.
Speaker Output: Recommended for speakers with a maximum power of more than 50 W (both at the rear and front) and an impedance of 4 Ω to 8 Ω. For speakers with less than 50 W maximum power, the "Amplifier Gain" setting should be adjusted to prevent damage.
External Device Power Output: The "POWER ANTENNA" lead (blue) provides up to 250 mA max. for an automatic antenna. The "remote lead of other equipment" (blue with white stripe) provides up to 200 mA max.
Connectivity:
- Audio Outputs: Rear OUT, Front OUT, SUBWOOFER OUT (RCA pre-outs).
- Video Outputs: VIDEO OUT (RCA).
- Audio Inputs: LINE IN (RCA).
- Video Inputs: CAMERA IN (RCA) for rear-view camera, VIDEO IN (RCA) for external video sources (e.g., camcorder).
- RGB Input: Dedicated RGB input terminal for external navigation units.
- USB: USB port for connecting USB devices, iPods, and iPhones.
- Microphone Input: MIC IN for the supplied microphone.
- Bluetooth: Compatible with the KS-UBT1 Bluetooth adapter (inserted).
- Steering Wheel Remote: Compatible with an OE remote adapter for steering wheel control.
Monitor Panel: Detachable monitor panel for security and installation flexibility.
Dimensions (implied by installation instructions): Designed for in-dash mounting, requiring specific brackets and screws for secure fitment in various car models (e.g., Toyota, Nissan).

Usage Features:

Multimedia Playback: Supports playback of various media formats, including video, with the monitor panel displaying content.
Safety Interlock: Video playback is restricted when the parking brake is not engaged, displaying a "Parking Brake" warning. This feature requires the parking brake lead to be correctly connected to the car's parking brake system.
Steering Wheel Remote Control: Allows operation of the unit via the car's existing steering wheel remote controls, provided an appropriate OE remote adapter is connected.
Rear View Camera Support: Integrates with a rear-view camera (e.g., KV-CM10) via the CAMERA IN terminal, automatically displaying the camera feed when the reverse gear signal lead is connected.
Navigation Integration: Connects to external navigation units via the RGB input, allowing for display of navigation information and interaction with the touch panel.
iPod/iPhone Connectivity: Supports audio and video playback from iPods and iPhones using a USB 2.0 cable (accessory of the iPod/iPhone) and, for video, an additional KS-U30 USB Audio and Video cable (not supplied).
External Amplifier/Subwoofer Support: Provides dedicated pre-outs for connecting external amplifiers and subwoofers, allowing for system expansion and improved sound quality. The unit's built-in amplifier can be switched off to optimize sound for external amplifiers.
Bluetooth Connectivity: Enables hands-free calling and audio streaming when the KS-UBT1 Bluetooth adapter is inserted and connected.
Illumination Control: Connects to the car's light control switch for synchronized illumination with the vehicle's dashboard lights.
TEL Muting: Features a brown lead for connecting to a mobile phone system to mute audio during incoming calls.

Maintenance Features:

Fuse Replacement: The fuse is user-replaceable, but frequent blowing indicates a potential issue requiring professional consultation.
Heat Sink Management: The unit's heat sink can become very hot during use. Users are cautioned not to touch it when removing the unit and to ensure all wires are routed away from heat sinks during installation to prevent damage.
Troubleshooting Guide: The manual includes a basic troubleshooting section for common issues such as:
- Fuse blows: Check red and black lead connections.
- Power cannot be turned on: Check yellow lead connection.
- No sound from speakers: Check for speaker output lead short-circuits.
- Sound is distorted: Check for speaker output lead grounding or common grounding of L and R speaker "-" terminals.
- Noise interference: Ensure the rear ground terminal is connected to the car's chassis with shorter, thicker cords.
- Unit becomes hot: Check for speaker output lead grounding or common grounding of L and R speaker "-" terminals.
- Unit does not work at all: Suggests resetting the unit.
Installation Precautions: Emphasizes disconnecting the battery's negative terminal before making electrical connections to prevent short circuits. Also, advises covering unused leads with insulating tape.
Professional Installation Recommendation: For users unsure about correct installation, it is recommended to have the unit installed by a qualified technician.
Parts List: A comprehensive list of supplied parts (main unit, monitor panel, soft case, remote controller, batteries, extension lead, power cord, crimp connector, screws, Bluetooth adapter, microphone, bag for adapter) helps ensure all components are present for installation.