JAC HFC4DA1-2C engine. Service Manual — part 21

AV

AV

AV

AV Audio/

Audio/

Audio/

Audio/Video

Video

Video

Video System

System

System

System

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Audio/

Audio/

Audio/

Audio/Video

Video

Video

Video System

System

System

System

Applied models: SUNRAY products manufactured by JAC

Subject

Page

Instruction

Instruction

Instruction

Instruction and

and

and

and Operation

Operation

Operation

Operation

Radio. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114

Mounting position. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...114
Introduction functions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .115
Precautions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..119

Diagnosis

Diagnosis

Diagnosis

Diagnosis and

and

and

and Testing

Testing

Testing

Testing

Radio. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121

Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 121

Removal/Installation

Removal/Installation

Removal/Installation

Removal/Installation

Radio. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124

Removal of Radio. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ... 124
Removal of loudspeakers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125

Specification

Specification

Specification

Specification

Radio. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127

Basic parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .127

AV

AV

AV

AV Audio/

Audio/

Audio/

Audio/Video

Video

Video

Video System

System

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System

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Instruction

Instruction

Instruction

Instruction and

and

and

and Operation

Operation

Operation

Operation

Audio

Audio

Audio

Audio system

system

system

system

SUNRAY audio control system, powered by 12V DC power supply, is composed of CD module, radio module and
MP3 module, which features with 10 seconds electronic anti-vibration reliability, USB data reading function and
FM/AM radio, and can supports play formats of CD, MP3 and WMA.
The host, featuring with four-way audio output function, can be connected with four-way loudspeaker; therefore,
vehicle occupants can adjust proper voice and select play format freely based on actual road condition, as well as
adjust various output volume by audio balance setting.

Mounting

Mounting

Mounting

Mounting position

position

position

position of

of

of

of audio

audio

audio

audio host:

host:

host:

host:

In the middle of center console of instrument panel.

AV

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Instruction

Instruction

Instruction

Instruction and

and

and

and Operation

Operation

Operation

Operation

Introduction

Introduction

Introduction

Introduction to

to

to

to CD

CD

CD

CD player

player

player

player function

function

function

function

1.

Press it shortly.
BASS:

Low pitch

TREBLE:

High pitch

BAL:

Left/right balance

FADER:

Front/rear balance

CUSTOM:

Set by customer

2.

Press it shortly.
Under “CUSTOM” mode, sound effect can be
achieved by adjusting volume up or down.
JAZZ:

Jazz music

VOCAL:

Vocal

POP :

Popular music

ROCK:

Rock and roll

CLASSIC:

Classic music

FLAT: Flat

voice

3.

Press it shortly.
Loudness enhancement ON;

Press and hold it.
Loudness enhancement OFF.

4.

Press it shortly.
The machine is turned on if it is under OFF status.

Press and hold it.
Mute mode is turned on if it is under ON status.

Turn counterclockwise.
To decrease volume.

Turn clockwise.
To increase volume.

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Instruction

Instruction

Instruction

Instruction and

and

and

and Operation

Operation

Operation

Operation

Introduction

Introduction

Introduction

Introduction to

to

to

to CD

CD

CD

CD player

player

player

player function

function

function

function

5.

Press it shortly.
Under radio mode, the first radio station is
selected; under playback mode, random play starts.

Press and hold it.
The current radio station is stored onto No.1
position.

6.

Press it shortly.
Under radio mode, the second radio station is
selected; under playback mode, repeat play starts.

Press and hold it.
The current radio station is stored onto No.2
position.

7.

Press it shortly.
Under radio mode, the third radio station is
selected; under playback mode, scan play starts.

Press and hold it.
The current radio station is stored onto No.3
position.

8.

Press it shortly.
Under radio mode, the fourth radio station is
selected; under playback mode, it starts to play
from the last 10th songs.

Press and hold it.
The current radio station is stored onto No.4
position.

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Instruction

Instruction

Instruction

Instruction and

and

and

and Operation

Operation

Operation

Operation

Introduction

Introduction

Introduction

Introduction to

to

to

to CD

CD

CD

CD player

player

player

player function

function

function

function

9.

Press it shortly.
Under radio mode, the fifth radio station is
selected; under playback mode, it skips the first 10
songs to play.

Press and hold it.
The current radio station is stored onto No.5
position.

10. Press it shortly.

CD quit if it is inside.

11. Press it shortly.

Cycle selection of band from FM1, FM2, FM3,
AM and AM2.

Press and hold it.
Under FM mode, maximum 15 radio stations can
be searched automatically and stored onto FM1,
FM2 and FM3; under AM mode, maximum 10
radio stations can be searched automatically and
stored onto AM1 and AM2.

12. Press it shortly.

Cycle selection of radio/playback sound source.

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Instruction

Instruction

Instruction

Instruction and

and

and

and Operation

Operation

Operation

Operation

Introduction

Introduction

Introduction

Introduction to

to

to

to CD

CD

CD

CD player

player

player

player function

function

function

function

13. Press it shortly.

Auto searching to low end.

Press and hold it.
Manual searching to low end.

14. Press it shortly.

Auto searching to high end.

Press and hold it.
Manual searching to high end.

15. With U disk inserted, MP3/WMA format play can

be achieved.

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Instruction

Instruction

Instruction

Instruction and

and

and

and Operation

Operation

Operation

Operation

Precautions

Precautions

Precautions

Precautions

1.

Don’t place CD player under hot environment.

2.

Don’t remove the CD player violently.

3.

Don’t use the CD player when driving on bumpy
road surface.

4.

The deformed CD cannot be applied.

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Instruction

Instruction

Instruction

Instruction and

and

and

and Operation

Operation

Operation

Operation

Precautions

Precautions

Precautions

Precautions

5.

Handle the CD properly.

6.

The CD is not allowed to be exposed under strong
sunlight.

7.

Don’t write or stick label on the CD.

8.

Keep the CD clean.

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Diagnosis

Diagnosis

Diagnosis

Diagnosis and

and

and

and Testing

Testing

Testing

Testing

Troubleshooting

Troubleshooting

Troubleshooting

Troubleshooting

1.

1.

1.

1.

Poor

Poor

Poor

Poor reception

reception

reception

reception of

of

of

of antenna.

antenna.

antenna.

antenna.

Step

Operation

Yes

No

1

Does the reception effect decrease or are there more than one radio stations cannot
be received?

Go to Step 3.

Go to Step 2.

2

Check if there are specific frequencies interfered by the electrical system of vehicle
as per procedures below:

①Turn the ignition switch to ON position.

②Select the influenced radio station.

③Remove one fuse each time until the failed one is found out.

④Perform necessary maintenance for the failed circuit.

Is the maintenance finished?

Check radio system.

—

3

①Disconnect the negative cable of battery.

②Disconnect the antenna lead connector from the radio receiver.

③Measure the resistance between antenna lead connector and battery ground cable.

Is the resistance higher than the specified?

Go to Step 4.

Go to Step 5.

4

①Disconnect the radio antenna lead connector from the windshield.

②Measure the resistance between co-axial cable shielded ground and radio
connector shielded circuit.

Is the resistance higher than the specified?

Go to Step 8.

Go to Step 10.

5

Measure the resistance of center conductor (signal input) between the antenna
connector and the radio connector.

Is the resistance higher than the specified?

Go to Step 7.

Go to Step 6.

6

Measure the resistance between center conductor (signal input) and coaxial cable
shielded ground.

Is the resistance lower than the specified?

Go to Step 9.

Go to Step 1.1

7

①Check coaxial cable and interconnection for failed connection or corrosion.

②Repair cable and interconnection when necessary.

③If the cable and interconnection are normal, please replace the coaxial cable of
antenna.

Is the maintenance finished?

Check radio system.

—

8

①Check coaxial cable ground for failed connection or corrosion.

②Repair the ground when necessary.

③Replace the coaxial cable if the ground is normal.

Is the maintenance finished?

Check radio system.

—

9

Replace the affected section of coaxial cable. If the maintenance finished?

Check radio system.

—

10

Perform maintenance for the failed connection or corrosion at the coaxial ground
cable.

Is the maintenance finished?

Check radio system.

—

11

①Check coaxial cable connector on the windshield for failed connection or
corrosion.

②Replace the good radio already known.

③Replace the windshield if the reception is not improved.

Is the maintenance finished?

Check radio system.

—

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Diagnosis

Diagnosis

Diagnosis

Diagnosis and

and

and

and Testing

Testing

Testing

Testing

Troubleshooting

Troubleshooting

Troubleshooting

Troubleshooting

2.

No radio display with the parking lamp on.

Step

Operation

Yes

No

1

①Turn the ignition key to ACC position.

②Turn on the radio.

③Turn the parking lamp.

④Adjust the instrument panel lamp dimmer switch.

Does the fluorescent shield display of radio operate normally?

Check harness.

Go to Step 2.

2

Test the DC dimmer signal circuit for:

Open circuit

High resistance

Short circuit to ground

Poor contact

Is the fault detected and eliminated?

Go to Step 6.

Go to Step 3.

3

In the DC dimmer signal circuit, test the output DC voltage of the headlamp and
instrument panel lamp dimmer switch.

Does the voltage change with the rotation of instrument panel lamp dimmer
switch?

Go to Step 4.

Go to Step 5.

4

Replace the radio.

Is the maintenance finished?

Go to Step 6.

—

5

Replace headlamp and instrument panel lamp dimmer switch.

Is the maintenance finished?

Go to Step 6.

—

6

Operate the system to check the maintenance result.

Is the fault eliminated?

System is intact.

Go to Step 1.

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Diagnosis

Diagnosis

Diagnosis

Diagnosis and

and

and

and Testing

Testing

Testing

Testing

Troubleshooting

Troubleshooting

Troubleshooting

Troubleshooting

3.

Loudspeaker failed to operate.

Step

Operation

Yes

No

1

Does every loudspeaker fail to operate?

Go to Step 6.

Go to Step 2.

2

Regulate the radio balance and find out the suspected loudspeaker.

Does this loudspeaker operate normally?

Go to Step 3.

Go to Step 3.

3

①Remove the radio.

②Use an appropriate jumper to make instantaneous contact with the 1.5V battery
in relevant loudspeaker circuit.

Is there any bang of loudspeaker?

Go to Step 7.

Go to Step 4.

4

Test relevant loudspeaker circuit for open circuit or too high voltage.

Is the fault detected and eliminated?

Go to Step 10.

Go to Step 5.

5

Check loudspeaker for poor contact.

Is the fault detected and eliminated?

Go to Step 10.

Go to Step 8.

6

Test every loudspeaker circuit for short circuit to positive battery voltage or ground.

Is the fault detected and eliminated?

Go to Step 10.

Go to Step 7.

7

Check radio harness connector for poor contact.

Is the fault detected and eliminated?

Go to Step 10.

Go to Step 9.

8

Replace relevant loudspeaker.

If the replacement finished?

Go to Step 10.

—

9

Replace the radio.

Is the maintenance finished?

Go to Step 10.

—

10

Replace the failed system.

Does the system return to normal?

Go to Step 1.

System is intact.

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Removal/Installation

Removal/Installation

Removal/Installation

Removal/Installation

Removal

Removal

Removal

Removal of

of

of

of CD

CD

CD

CD player

player

player

player

1.

Disconnect the negative cable of battery.

2.

Remove the outer cover plate of CD player.

3.

Unscrew the mounting bolts from CD player.

4.

Disconnect the connecting wire of radio and
remove the CD player.

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Removal/Installation

Removal/Installation

Removal/Installation

Removal/Installation

Removal

Removal

Removal

Removal of

of

of

of loudspeakers

loudspeakers

loudspeakers

loudspeakers

1.

Disconnect the negative cable of battery.

2.

Remove the third and fourth rows of seat.

3.

Remove the inner trims.

4.

Remove the mounting bolts.

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Removal/Installation

Removal/Installation

Removal/Installation

Removal/Installation

Removal

Removal

Removal

Removal of

of

of

of loudspeakers

loudspeakers

loudspeakers

loudspeakers

5.

Disconnect the connecting harness and remove the
loudspeaker.

AV

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Specification

Specification

Specification

Specification

Basic

Basic

Basic

Basic parameters

parameters

parameters

parameters of

of

of

of audio

audio

audio

audio system

system

system

system

1.

Operating condition and performance parameter:

Item

Range

Typical Value

Operating voltage

DC 10.8V ～ 16V

12V

Operating temperature

-20℃ ～ 70℃

/

Storage temperature

-40℃ ～ 80℃

/

Relative humidity

40% ～ 93%

/

Atmospheric pressure

86KPa ～ 106KPa

/

2.

AM technical data:

Item

Unit

Performance Parameter

Frequency range

KHz

531 ～ 1629

Intermediate frequency

KHz

455±5

S/N sensitivity

dBuV

≤40

S/N ratio

dB

≥40

Selectivity

dBuV

≥40

Intermediate frequency rejection ratio

dBuV

≥50

Image rejection ratio

dBuV

≥60

Automatic gain control

dBuV

≥40

Maximum output power

W

≥10

Distortion

%

≤3

3.

FM technical data:

Item

Unit

Performance Parameter

Frequency range

MHz

87.5 ～ 108

Intermediate frequency

MHz

10.7 ± 0.3

S/N sensitivity

dBuV

≤12

-3dB amplitude limiting

dBuV

≤10

S/N ratio

dBuV

≥50

Intermediate frequency rejection ratio

dBuV

≥65

Image rejection ratio

dBuV

≥50

AM rejection ratio

dBuV

≥35

Selectivity

dB

≥20

Search sensitivity

dBuV

14 ～ 24

Channel separation L/R

dB

≥25

Distortion

%

≤2

Overload distortion

%

≤5

Maximum output power

W

≥15W

Stereo S/N ratio

dB

≥46

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4.

Technical data for USB-MP3 play:

Item

Unit

Performance Parameter

Frequency response

dB

100Hz/100KHz ±3dB

Standard distortion

/

≤3%

S/N ratio

dB

≥50

Channel separation

dB

≥45

Maximum output power

W

≥10

5.

Technical data for CD play:

Item

Unit

Test Condition

Performance Parameter

S/N ratio

dB

0dB Track

≥60

Channel separation

dB

20Hz

≥45

dB

1KHz

≥50

dB

10KHz

≥45

Distortion

%

1KHz

≤0.35

%

10KHz

≤0.5

Frequency response

dB

20Hz

0± 3

dB

20KHz

0± 3

Maximum output power

W

1KHz

≥15

CD read time

S

TCD-784

≤10

CD quit time

S

TCD-784

≤8

Time to next track

S

TCD-784

≤3

Time between first and last track

S

TCD-784

≤5

Pause and play time

S

TCD-784

≤6

Error correction during reading core shift

CD

um

TCD-712R

≥140

Error correction during reading plane

polarized CD

mm

TCD-731RA

≥0.6

Breakpoint/macula during reading error

correction CD

mm

TCD-725B

≥0.7 / ≥0.6

Fingerprint during reading error correction

CD

um

TCD-725B

≥65

6.

Technical data for loudspeakers:

Item

Unit

Performance Parameter

Rated impedance

Ω

4Ω± 0.6

Rated power

W

20W

Maximum rated power

W

30W

Rated resonance frequency

HZ

80HZ±20

Rated frequency range

HZ

f0-8KHZ

Rated characteristic sensitivity

dB

87±3

Low temperature resistance

℃

-40℃

High temperature resistance

℃

85℃