Daewoo AGC-4208, AGC-4208RD, AGC-4206H Service Manual

DAEWOO CAR STEREO SERVICE GUIDE

CD/CDC

DABBAND

AGC-4208

S

D

D

A

B

Service Guide

Service Guide

CAR AUDIO

AGC 4208 : USB / SD / MP3 / CD Player with Radio

AGC-4208 Series

AGC-4208RD

AGC-4206H

1. PRODUCT SPECIFICATION 1

2. APPEARANCE & CONNECTION

2

3. FRONT PANNEL INFOMATION

5

4. ELECTRICAL SPECIFICATION

7

5 TROUBLE SHOOTING GUIDE

11

6. FUNCTION OF MICOM IC

12

7. IC BLOCK DIAGRAM

16

8. PARTS LOCATION ON P.C.BOARD

25

9. BLOCK & SCHEMATIC DIAGRAM

31

10. ELECTRICAL PARTS LIST

37

11. OVERALL EXPLODED VIEW

45

Contents

1

1. PRODUCT SPECIFICATION

SPECIFICATION

AUDIO SECTION

Maximum output power : 25 Watts Per Each Channel into 4 Ohms
Total Harmonic distortion : Less Than 10% at 20 Watts
Frequency Response : 100Hz(

3dB), 10kHz( 3dB)

Control Bass / Treble : 10

3dB at 100Hz / 10kHz

RADIO SECTION

FM Section

Tuning Range : 87.5 ~ 108MHz(50kHz Step)
Usable Sensitivity(Mono) : 12dBuV(75Ohms)
Signal To Noise Ratio : More Than 50dB (at 60dBuV)
Total Harmonic Distortion : Less Than 0.5%

MW Section

Tuning Range : 522kHz to 1620kHz at Europe
Usable Sensitivity(Mono) : 30dBuV(75Ohms)
Signal To Noise Ratio : More Than 45dB (at 60dBuV)
Total Harmonic Distortion : Less Than 1.0%

CD/ CD MP3/ USB MEMORY/ SD CARD SECTION

Disc : Compact Disc(12cm Std. Disc)
Rotation RPM : 1.2m/s~1.4m/s(200~500rpm) Usable
Frequency Response : 20Hz~20kHz
S/N Ratio : 60dB
Total Harmonic Distortion : Less Than 0.1%
Channel Separation : 60dB

DAB SECTION

Tuning Range : 174~240 MHz(Band 3)

: 1452~1492MHz(L Band)
Usable Sensitivity(Mono) : Less than -90dBm
Frequency Response : 20Hz~20kHz
S/N Ratio : More than 60dB
Total Harmonic Distortion : Less Than 0.1%

GENERAL

Power Requirement : DC 12,.0V / Rated : 14.4V

: (Usable : 10.8~15.6V)

: Negative Ground
Speaker Impedance : 4~8 ohms(4 Speakers)
Current Consumption : 7.5A Maximum
Fuse Ratings : Constant(Yellow wire) 10A
Dimension(W °ø H °ø D) : 178 x 50 x 156 mm
Chassis Size : 195 x 64 x 14.6 mm
Weight(Net) : 1.75 Kg

2.

APPEARANCE & CONNECTION

2

AGC-4208RD

CD/CDC

DABBAND

AGC-4208

S

D

D

A

B

FRONT PANEL

ESC.

SD Card / USB Memory Playable
MP3 / CD / CD-R / RW Playable
Face Full Detachable for Anti-Theft
4-Channel High Power Output (50W 4Ch)
Encoding Volume Control

Electronic Bass / Treble / Balance / Fader Control
30 Station Memory Capability (18FM + 12AM)
Seek / Auto Memory
Mute / Tel. Mute / RDS Function
Aux-In

CD/CDC

DABBAND

AGC-4208

S

D

D

A

B

MP3 Playback Mode

Selection Control, ALL/DIR

Display Mode Selection of the rear Display

Speaker Position
Control

Scroll On/Off Control

Face Full

Detachable

3

AGC-4206H

CD

AMFM

AGC-4208

LOUD

FRONT PANEL

ESC.

MP3 / CD / CD-R / RW Playable
Face Full Detachable for Anti-Theft
4-Channel High Power Output (50W 4Ch)
Encoding Volume Control

Electronic Bass / Treble / Balance / Fader Control
30 Station Memory Capability (18FM + 12AM)
Seek / Auto Memory
Mute / Tel. Mute / Loudness Control
Aux-In

CD

AMFM

AGC-4208

LOUD

MP3 Playback Mode

Selection Control, ALL/DIR

Display Mode Selection of the rear Display

Speaker Position
Control

Scroll On/Off Control

Face Full

Detachable

Appearance

4

CONNECTION

Connection

A

B

C

127

8

127

8

1

2

3

13

7

814451920

ي

ي

A

B

C

127

8

127

8

1

2

3

13

7

8

14451920

A-Part : POWER

1. T.MUTE : BROWN

4. Back-up +12V : YELLOW

5. +12V (Automatic antenna)
: BLUE

6. Dimmer : PINK

7. +12V supply (from ignition Lock)
: RED

8. Ground : BLACK

36 Pin ISO Connector

B-Part : SPEAKER

1. Right Rear (+) : VIOLET

2. Right Rear (

-

): VIOLET/Stripe

3. Right Front (+) : GRAY

4. Right Front (

-

) : GRAY/Stripe

5. Left Front (+) : WHITE

6. Left Front (

-

) : WHITE/Stripe

7. Left Rear (+) : GREEN

8. Left Rear (

-

): GREEN/Stripe

C-Part : Accessory

1. Rear Left

2. Rear Right

3. Audio Ground

4. Front Left

5. Front Right

7. Aux In Left

8. Aux In Right

9. Audio Ground

11. Phone Audio In

12. GND

ISO Connector B

B1: Rear Right+(Violet)
B2: Rear Right-(Violet w/black stripe)
B3: Front Right+(Gray)
B4: Front Right-(Gray w/black stripe)
B5: Front Left+(White)
B6: Front Left-(White w/black stripe)
B7: Rear Left+(Green)
B8: Rear Left-(Green w/black stripe)

ISO Connector A

A1: Brown - Telephone Mute Lead
A4: Yellow - Battery Lead
A5: Blue - Motor Antenna Relay Control Lead
A6: Pink - Illumination Power Lead
A7: Red - Power Lead(ACC or IGN)
A8: Black - Ground Lead

ISO COnnector

ANTENNA

ISO COnnector Cable

Strip Wire

3. FRONT PANEL INFOMATION

5

FRONT PANEL

AGC-4208RD

LCD Panel & Remote Control

Power On/Off
CD Eject
Volume Adjustment
SELECT Menu Control
FM/AM Radio Selection
DAB Selection

CD/CDC

DABBAND

AGC-4208

S

D

D

A

B

CD/CDC Mode Selection
Preset Memory (#1 ~ #6)

Other Additional Function of

MP3 / CD, Menu
Display Mode Selection
AUX / USB / SD Mode Selection

Audio Mute Control
Front Panel Open
ID3 Tag Display of the CD mode
RDS Menu Control
Phone Mode Selection
General Menu Control

Sound Menu Adjustment
Tune Up, Next Track and Next File Button (>)
Tune Down, Previous Track and Previous File (<)
Radio Frequency Scan /PTY Search
Preset Memory Scan and Auto-store Function

Power On/Off

1

POWER

0

987

654

32

CD

DISP

SOUND

BAND

AUX

INFO

ENTER

P/B

MUTE

TOP

INT

RPT

RDM

D-

D+

SUB.TITLE

P.MODE

ANGLE

OPEN

S.MODE

MENU

TITLE

SRC

DAR

CHANGER

SELECT

CD Mode
Selection

Display Mode
Selection

Volume
Adjustment
(Left/Right)

Preset Memory
Scan

Preset Memory
(#1 ~ #6)

Front Panel
Open

Sound Menu Adjustment
Radio Band Selection

ID3 Tag Display of the CD
mode

Tune Up, Next Track and
Next File Button (Up)

Audio Mute Control

Other Additional Function of
MP3 / CD, Menu

(TOP/INT/RPT/RDM/D-/D+)

General Menu Control

Tune Down, Previous Track
and Previous File (Down)

AUX Mode Selection

Front LCD Panel

Rear LCD Panel

6

FRONT PANEL

AGC-4206H

LCD Panel & Remote Control

Power On/Off
CD Eject
Volume Adjustment
SELECT Menu Control
FM Radio Selection
AM Radio Selection

CD

AMFM

AGC-4208

LOUD

CD Mode Selection Preset

Memory (#1 ~ #6)

Other Additional Function of

MP3 / CD, Menu
Display Mode Selection
AUX Mode Selection

Audio Mute Control
Front Panel Open
ID3 Tag Display of the CD mode

Loudness Control
Phone Mode Selection
General Menu Control

Sound Menu Adjustment
Tune Up, Next Track and Next File Button (>)
Tune Down, Previous Track and Previous File (<)
Radio Frequency Scan
Preset Memory Scan and Auto-store Function

Power On/Off

1

POWER

0

987

654

32

CD

DISP

SOUND

BAND

AUX

INFO

ENTER

P/B

MUTE

TOP

INT

RPT

RDM

D-

D+

SUB.TITLE

P.MODE

ANGLE

OPEN

S.MODE

MENU

TITLE

SRC

DAR

CHANGER

SELECT

CD Mode
Selection

Display Mode
Selection

Volume
Adjustment
(Left/Right)

Preset Memory
Scan

Preset Memory
(#1 ~ #6)

Front Panel
Open

Sound Menu Adjustment

Radio Band Selection

ID3 Tag Display of the CD
mode

Tune Up, Next Track and
Next File Button (Up)

Audio Mute Control

Other Additional Function of
MP3 / CD, Menu

(TOP/INT/RPT/RDM/D-/D+)

General Menu Control

Tune Down, Previous Track
and Previous File (Down)

AUX Mode Selection

Front LCD Panel

Rear LCD Panel

Front Panel Information

1 OUTPUT POWER(10%THD) FM 75KHz W 20 15

OUTPUT POWER(VOL MAX) FM 75KHz W 30 22

2 BALANCE CONTROL EFFECT L -> R dB 60 50

R -> L dB 60 50

3 FADER CONTROL EFFECT F -> R dB 60 50

R -> F dB 60 50

4 BASS CONTROL EFFECT at 100Hz dB 10 7 3

at 100Hz dB -10 -13 -7

5 TREBLE CONTROL EFFECT at 10KHz dB 10 7 3

at 10KHz dB -10 -13 -7

6 LOUD EFFECT VOL 23 at 100Hz dB 10 7 3

at 10KHz dB 10 7 3

7 LEVEL BALANCE

FM :

45KHz dev. / 60dBuV

dB 0 0

MW :

30% mod. / 74dBuV

dB -5 -5 3 dB

CDP : TCD-782, Tr2, 1KHz dB 10 10 3 dB

MP3 : SCD-4419 1KHz dB 10 10 3 dB

SDC : SCD-4419 1KHz dB 10 10 3 dB

USB : SCD-4419 1KHz dB 10 10 3 dB

DAB :

211.648MHz, 0dB/-70dBn

dB 10 10 3 dB

AUX : Input 500mV dB 5 5 3 dB

PHONE : nput 500mV dB 10 5 3 dB

8 CHANNEL BALANCE

LEFT FRONT : dB 0 0

RIGHT FRONT : dB 0 0 3 dB

LEFT REAR : dB 0 0 3 dB

RIGHT REAR : dB 0 0 3 dB

7

GENERAL AUDIO SECTION

NO PERFORMANCE

POSITION

UNIT

NOMINAL

LIMIT

4. ELECTRICAL SPECIFICATION

1 TUNING RANGE MIN KHz 522 522

MAX KHz 1620 1620

2 CHANNEL SPACE KHz KHz 9 9

3 INTERMEDIATE FREQUENCY KHz KHz 450 450

4 USABLE SENSITIVITY 603 KHz dB 25 30

(S/N = 20dB) 999 KHz dB 25 30

1404 KHz dB 25 30

5 IMAGE REJECTION RATIO 1404 KHz dB 50

40

6 IF REJECTION RATIO 603 KHz dB 100

50

7 AGC Figur of Merit 999 KHz dB 55 40

8 SELECTIVITY 999 KHz dB 90 40

9 BAND WIDTH (-6dB) 999 KHz KHz 8 C

10 S/N RATIO 999 KHz dB 50 45

11 T.H.D (74dBu Input) 30% 400Hz 999 KHz % 1.0 3

12 AUDIO FIDELITY(-6dB) 999 KHz LOW 20 100

HIGH 1.5 1.4

13 SEARCH STOP LEVEL 1000 KHz dB 30 20 40

14 LOCAL EFFECT 999 KHz dB 20 10 30

15 TWEET MODULATION (2*IF) 1000 KHz % 1.0 5.0

Electrical Specification

RADIO - AM SECTION

8

NO PERFORMANCE

POSITION

UNIT

NOMINAL

LIMIT

DUMMY CONDITION : J.I.S Dummy

* Antenna dummy information

Consider: Er = Ek-6 [dBuV]

Vg = S.G. dBuV voltage

All resistor values in ohms. All capacitor values in pico farads.

1

60

45Ek

~

=

FM ANTENNA DUMMY

AM antenna input

Tuner Under Test

FM antenna input

Antenna ground

1

3

2

SIGNAL
GENERATOR

Vg

Er

Er

=

SIGNAL
GENERATOR

AM antenna input

Tuner Under Test

FM antenna input

Antenna ground

1

3

2

AM ANTENNA DUMMY

~

Vg

1 TUNING RANGE MIN MHz 87.5 87.5

MAX MHz 108.0 108.0

2 CHANNEL SPACE ALL KHz 50 50

3 INTERMEDIATE FREQUENCY ALL MHz 10.8

4 USABLE SENSITIVITY 90.1 MHz dB 10 15

(S/N = 30dB) 98.1 MHz dB 10 15

106.1 MHz dB 10 15

5 IF REJECTION RATIO 90.1 MHz dB 70

50

6 IMAGE REJECTION RATIO 106.1 MHz dB 50

40

7 LIMITING SENSITIVITY (-3dB) 98.1 MHz dB 15 23

8 AM SUPPRESSION (AM 30%) 98.1 MHz dB 50 30

9 S/N RATIO (MONO) 98.1 MHz dB 55 50

10 T.H.D (MONO) 22.5KHz 98.1 MHz % 0.5 2

11 AUDIO LOW 100 Hz dB 0 -3 3

FIDELITY HIGH 10 KHz dB -6 -8 -2

12 STEREO ON SENSITIVITY 98.1 MHz dB 10 25

13 STEREO SEPARATION 1KHz 98.1 MHz dB 25 20

14 SEARCH STOP LEVEL 98.1 MHz dB 20 10 30

15 LOCAL EFFECT 98.1 MHz dB 20 10 30

16 PI SEEK LEVEL 98.1 MHz dB 30 35

17 AF SEARCH LEVEL 98.1 MHz dB 30 35

18 TA POWER(98.1M,45K,60dBu) 98.1 MHz mV 250 250

19 TP INDICATOR ON LEVEL 98.1 MHz dB 28 35

20 EON SENSITIVITY MHz dB

21 OUTPUT POWER MHz W

22 ALTERNATE CH SENSITIVITY MHz dB

23 NOISE OUTPUT MHz mV

24 HCC EFFECT 10kHZ 30% 98.1 MHz dB 6 4

9

NO PERFORMANCE

POSITION

UNIT

NOMINAL

LIMIT

RADIO - FM SECTION

Electrical Specification

DUMMY CONDITION : J.I.S Dummy

1 FREQUENCY RESPONSE

TCD-782(MP3), #6

100Hz dB 0 -3 3

(1kHz, 0dB)

TCD-782(MP3), #4

10KHz dB 0 -3 3

2 S/N RATIO

TCD-782(MP3), #2/#8

1KHz dB 65 60

3 T.H.D (1kHz)

TCD-782(MP3), #2

TCD 784 % 0.1 0.5

4 CHANNEL SEPERATION

TCD-782(MP3), #9,11

1KHz dB 50 45

TCD-782(MP3), #10,12

10KHz dB 50 45

NOMINAL

LIMIT

10

CD / USB / SD SECTION

NO PERFORMANCE

POSITION

UNIT

Electrical Specification

DAB SECTION

1 TUNING RANGE BAND 3 MIN MHz 174 174

MAX MHz 240 240

L BAND MIN MHz 1452 1452

MAX MHz 1492 1492

2 SENCITIVITY BER 0.0200 176.640 dBm -95 -90

211.648 dBm -95 -90

237.488 dBm -95 -90

1452.792 dBm -95

-90

1471.792 dBm -95

-90

1490.624 dBm -95 -90

3 FREQUENCY RESPONSE BAND 3 10KHz dB 0 -3 3

(Ref. 1kHz) 100Hz dB 0 -3 3

L BAND 10KHz dB 0 -3 3

100Hz dB 0 -3 3

4 S/N RATIO (MONO) 211.678 dB 70 65

1471.792 dB 70 65

5 T.H.D. RATIO (MONO) 211.678 % 0.1 0.5

1471.792 % 0.1 0.5

6 CHANNEL SEPERATION 211.678 dB 45 40

1471.792 dB 45 40

NOMINAL

LIMITNO PERFORMANCE

POSITION

UNIT

5.

TROUBLE SHOOTING GUIDE

11

AGC-4208RD & AGC-4206H

No sound from speaker

MAIN CONN check

Power ic output check

Power ic input
B up voltage check

B up voltage check

Put exactly output Connector in

SPEAKER check

Electric volume Output check

Power ic check

POWER ON

POWER ON KNOB
Touch check

Check the front Vdd 5V

Check the micom Vdd
and OSC

Change the tact switch

Check the Vdd

Check the micom Vdd 5V

LCD

LCD CONN. Touch check

Check the front Vdd 5v

Check LCD data

Change the LCD connector

Front Vdd 5V Regulator check

Check LCD driver IC Vdd

Change the LCD

CDP

Check the deck
Connector touch

Deck voltage check

Change the deck

Change the deck connector

Check the deck Voltage
regulator

Check the deck Communication

1. General Funtion

2. Deck Funtion

N.G

O K

O K

O K

O K

N.G

N.G

O K

O K

N.G

N.G

N.G

N.G

N.G

N.G

O K

O K

O K

O K

O K

N.G

N.G

N.G

6.

FUNCTION OF

MICOM IC

IC (UPD70F03033B) : Micro Controller Unit Function

12

AGC-4208RD & AGC-4206H

50. EVR_MUTE

49. N.C

48. EVR_SCL

47. EVR_SDA

46. EVR_RST

45. N.C

44. NC

43. DAC_MUTE

42. AMUTE

41. STBY

40. POWER

39. CLKOUT

38. VDD

37. VSS

36. X1

35. X2

34. REGC

33. XT2

32. XT1

31. RESET

30. N.C

29. MTR_RVS

28. MTR_FWD

27. N.C

26. F_EJT

25. F_CLS

24. F_OPN

23. N.C

22. PANEL

21. N.C

20. ENC_CCW

19. ENC_CW

18. IC/VPP

17. TEL_IN

16. ILL_OUT

15. LCD_CE

14. LCD_CLK

13. LCD_DI

12. LCD_DO

11. ILL_REAR

10. N.C

9. DOT_SRQ

8. N.C

7. EVSS

6. DVDD

5. DAB_CLK.

4. DAB_DO

3. DAB_DI

2. DOT_CLK

1. DOT_DO

SO/ST

N.C
N.C
N.C
N.C
N.C
N.C
N.C
N.C
N.C
N.C

ILL_IN

POWER_DOWN

ACC_IN

IR_RMC

CDC_DATA1

CD_IN

CDP_REQ

CDP_DI

CDP_DO

CDP_CLK

SD_RX

SD_TX

N.C

DOT_IN

N.C

MUX_SEL

N.C

DAB_ON

BVDD

BVSS

MEM_SDA

MEM_SCL

CDP_RST

SD_RST

N.C

N.C

N.C

N.C

N.C

TUN_SCL

TUN_SDA

RADIO_ON

CDC_DATA2

CDC_ON

AVDD

AV S S

AVREF

TUN_SM

TUN_ST

UPD70F03033B

76.

77.

78.

79.

80.

81.

82.

83.

84.

85.

86.

87.

88.

89.

90.

91.

92.

93.

94.

95.

96.

97.

98.

99.

100.

51.

52.

53.

54.

55.

56.

57.

58.

59.

60.

61.

62.

63.

64.

65.

66.

67.

68.

69.

70.

71.

72.

73.

74.

75.

13

Function of Micom IC of UPD70F03033B