Daewoo Akf-0305 Service Manual

Service Manual

Car Audio Basic, RDS & OIRT Band

S/M No : AKF0305EF1

MODEL : AKF-0305 Series

AKF-0315 Series

DAEWOO ELECTRONICS CO., LTD

http://svc.dwe.co.kr Mar. 2000

4-Channel High Power (35W x 4Ch)
Electronic Tuning
Electronic Volume/Bass/Treble/Balance/Fader Controls
Auto Memory/Preset Scan
Repeat/Random/Intro Scan
Loudness Controls
Local/DX Switch
Detachable Face for Anti-Theft

TABLE OF CONTENTS

1. PRODUCT SPECIFICATIONS .........................................1

2. LINE DRAWING ...................................................2

3. EMERGENCY TROUBLE SHOOT ...................................5

4. ADJUSTMENTS ...............................................................9

5. SCHEMATIC DIAGRAM ..................................................14

6. PARTS LOCATION ON P.C.BOARD ...........................17

7. OVERALL EXPLODED VIEW & PARTS LIST ..................23

8.

DECK MECHANISM EXPLODED VIEW & PARTS LIST

...........25

9. PARTS LIST .......................................................................28

10. FUNCTION OF MICOM IC ...............................................30

11. IC BLOCK DIAGRAM ...................................................39

12. LIQUID CRYSTAL DISPLAY .........................................46

13.

OUTPUT CONNECTION DESCRIPTIONS

..........................48

1

1. PRODUCT SPECIFICATIONS

AUDIO SECTION

Maximum output power : 35watts per channel into 4 ohms.
Load impedance : 4 ohms
Total harmonic distortion : Less than 10% at 12 watts
Frequency response : 100Hz( + 3dB), 10kHz(-5 + 3dB)
Control Bass/Treble : 10 + 3dB at 100Hz/10kHz

TAPE SECTION

Track format : 2-track / 2-channel system
Tape speed : 4.8cm/sec
Wow / Flutter : 0.35%max. (WRMS)
Frequency response normal (LH)tape : 63Hz to 10kHz

TUNER SECTION

(FM) Tuning range : 87.5 to 108MHz

87.5 to 107.9 at U.S.A

Usable Sensitivity(MONO) : 12dBuV(4

uV

/ 75ohms)

Signal to noise ratio (at 60dBu)

:

More than 50dB

(MW) Tuning range : 522 to 1620kHz at Europe

530 to 1710kHz at U.S.A

Usable Sensitivity : 30dBuV

(LW) Tuning range : 144 to 288kHz

Usable Sensitivity : 40dBuV

GENERAL

Power requirements : DC 12.0V / Rated : 14.4V

(Usable : 10.8 ~15.6V)
Negative ground

Current consumption : 10A Maximum
Dimension (W x H x D) : 178 x 50 x 156 mm
Weight(Net) : 1.75 kg

Design and specifications are subject to changes for improvements without notice.

2

2. LINE DRAWING

2-1. AKF-0305 Front Side

BASIC

RDS

3

LINE DRAWING

2-2. AKF-0315 Front Side

BASIC

RDS

4

LINE DRAWING

2-3. REAR SIDE

BASIC MODEL

RDS MODEL

RDS+CD CHANGER MODEL

5

3. EMERGENCY TROUBLE SHOOT

3-1. General Function

No sound from
speakers

Yes

No

Yes

Output connector
is missing

Output connector
is inferior goods

Put exactly output
connector in.

Change output
connector to
superior goods

Yes

No

Power IC, Output
Socket is inferior
goods

Change Power IC,
Output Socket to
superior goods

Yes

A

A

L.C.D or L.E.D
is not turned
off.

Yes

No

Yes

Power is not
supplied

Ref. Point

Output voltage of
power IC is little.

Change Regulator
IC and check
output voltage.

Yes

No

LCD or LED is
inferior goods.

Change LCD or
LED to superior
goods.

Yes

Different each
channel have
output level
(Front, Rear,
Left, Right)

Treble or Bass
is low
unusually

Yes

No

Yes

Balance of front
and rear is in one
side

Balance of Left,
Right is in one
side.

Re-adjust Balance
of front, rear

Ref.

Balance = Center
Front:00 / Rear:00

Ref.

Balance = Center
Left:00 / Right:00

Ref.

Balance = Center
Treble:00 / Bass:00

Ref.

Regulator IC output
Voltage = V

Ref.

Electrical Parts List
L.C.D., L.E.D.

Re-adjust Balance
of Left, Right

Yes

Yes

Balance of Treble
or Bass is in one
side.

Re-adjust Balance
of Treble or Bass

Yes

6

EMERGENCY TROUBLE SHOOT

3-2. Tuner Function

Hearing noise
only

Yes

No

Yes

No selected the
station

Tuner Module is
inferior goods.

Select exactly
broadcasting
frequency.

Change tuner
module to
superior goods.

Yes

Weak frequency
area caused by
elevations

Change to goods of
R.D.S function.

Yes

A

B

A

Station in
other regions
are not held.

Yes Yes

No selected the
local stations.

Ref. Point or

Extreme noise
in broadcast

Weak
separation of
FM stereo

Yes

No

Yes

Antenna
connector is
missing

Put exactly
antenna connector
in his jack

Ref.

CAT-6, 7 etc
Electrical Parts List

Function of auto­switch noise
reduction

Ref.

Yes

Weak frequency
area of FM, AM

Switch
automatically to
mono mode in
weak frequency
area

Yes

B

R1

In case of located Glass Antenna, check if heat wire is cut or not in rear window.

R1

Check Antenna connector part.

7

EMERGENCY TROUBLE SHOOT

3-3. Tape Function

No sound from
speakers

Yes

No

Yes

Tape is inferior
goods

No signal play
output

Use only superior
goods

Put exactly deck
output connector
in.

Yes

No

Deck Mechanism
is inferior goods.

Change Deck
Mechanism to
superior goods.

Yes

A

A

Sound is low or
not clear

Yes Yes

Head is dirty

Ref. Point

Clean head or
pinch roller with
cleaner

Tape is not
inserted into
the slot.

Some program
is played back
repeatedly

Yes

No

Yes

Tape was inserted
right side left.

Tape is ejected
after being
inserted.

Insert recording
part to right side.

Ref.

Tape Deck Macha
ADM-21/22

Ref.

Tape is cut or
extended

Ref.

Check on L.C.D
and press RPT
button.

Yes

Yes

Selected repeat
(RPT) function.

Release RPT
function

Yes

8

EMERGENCY TROUBLE SHOOT

3-4. CDC Function

Disc is not
inserted.

Yes

No

Yes

Discs are fold in
magazine slot.

Magazine is not
inserted rightly

Put one disc in
magazine slot.

Insert exactly
magazine

Yes

Inside degree of
the unit is
extreme

Turn power off and
stop operation for
about 1 hour

No

Yes

A

Selection time
is longer than
unusually

Yes

Selected PAUSE
function

Release PAUSE
function

Yes

Selected MUTE
function

Release MUTE
function

Yes

Mechanism is
inferior goods

Change
Mechanism to
superior goods

Yes

Inspect disc for
scratches.

Yes

No sound

Yes

No

Yes

Indoor degree is
so cold

8Pin connector is
missing

Turn power on
and stand by for
about 1 hour

Ref.

protective function
is started caused by
inside degree is
extreme.

Ref.

DWEC CD-C series
AKD-60, 70, 80, 100C

Ref.

DWEC CD-C series
AKD-60, 70, 80, 100C

Put exactly CD-C
8Pin connector in.

No

No

No

No

No

Yes

Disc is inferior
goods

Change disc to
superior goods

Yes

Disc is dirty

Wipe with cleaning
cloth

Yes

A

Ref. Point

4.

ADJUSTMENTS

9

4-1. EQUIPMENTS CONNECTIONS

ADJUSTMENTS

4-2. TUNER MODULE ADJUSTMENT LOCATIONS

10

ADJUSTMENTS

4-3. AM (MW/LW) ADJUSTMENT METHOD

11

STEP

1 Band Covering

RF-Tracking

Figure 1

Figure 2

Figure 2

Figure 1

Figure 2

522KHz 60dBu

Mod 1000Hz 30%

603KHz 30dBu

Mod 1000Hz 30%

1404KHz 30dBu

Mod 1000Hz 30%

144KHz 60dBu

Mod 1000Hz 30%

220KHz 60dBu

Mod 1000Hz 30%

522KHz

603KHz

1404KHz

144KHz

220KHz

Adjust AM OSC
for 1.2-1.35V(VT)
Fig.7

Adjust AM RF1 and
AM RF2
for maximum output
Fig.7

Adjust AM RF1 and
AM RF2
for maximum output
Fig.7

Adjust LW OSC
for 1.2-1.35V(VT)
Fig.7

Adjust LW RF1 and
LW RF2
for maximum output
Fig.7

RF-Tracking

LW Band Covering

LW-Tracking

2

3

4

5

DESCRIPTION

CONNECTION

ANTENNA SIGNAL

DIAL

CONTROL

ADJUSTMENT

1. Dummy Antenna Circuit

2. Location of Adjustment Points

Refer to Adjustment Location Page

3. Control Setting

Power Switch .................. ON Balance/Fader Control ...................... Mech. Center

Band Switch .................... AM Treble/Bass Control ........................... Mech. Center

Other ............................... OFF

4. Adjustment Procedure

NOTE: When it is U.S.A band instead of 522, 603, 999, 1404kHz is 530, 600, 1000, 1400kHz

ADJUSTMENTS

4-4. FM ADJUSTMENT METHOD

12

STEP

1 IF (Zero Volt)

RDS Receiving
estimation level

Figure 3

Figure 4

Figure 5

Figure 5

98.1MHz 60dBuV
No Modulation

98.1MHz 42dBuV
Mod.

1kHz 30% Mono

98.1MHz 60dBuV
Mod.

1kHz 30% Stereo Left

at Right ch.

98.1MHz 35dBuV
Mod.

1kHz 30% Stereo Left

at Right ch.

98.1MHz

98.1MHz

98.1MHz

98.1MHz

Adjust FM DET
for 0V + 0.03V
Fig.7

Adjust RV 108 Page7.
Tuner PC Board
for2.7V=20mV at
TP102(IC401 pin 66)

Adjust MPX SEP Fig.7
for maximum separation
Left and Right ch.

Adjust Stereo Blend
Fig.7 1dB separation
between Left and Right
ch.

Stereo Separation

SNC

4

5

6

DESCRIPTION

CONNECTION

ANTENNA SIGNAL

DIAL

CONTROL

ADJUSTMENT

1. Dummy Antenna Circuit

2. Location of Adjustment Points

Refer to Adjustment Location Page

3. Control Setting

Power Switch ................. ON Balance/Fader Control ..................... Mech. Center

Band Switch ................... FM Treble/Bass Control ......................... Mech. Center

Other ............................... OFF

4. Adjustment Procedure

ADJUSTMENTS

4-5. TAPE ADJUSTMENT METHOD

13

NOTE : 1. Clean the playback head before adjustment

2. Prepare the test tape MTT-114 or equivalent

3. Balance, Fader, Bass & Treble ....Center position. Volume adjusted to 2Volts.

Note

: dBu uV

dBu uV

17 5.0 33 44.6

16 6.31 35 56.2

30 31.6 45 178

NOTE : Antenna signal is used.

1. For Signal Generator with readings in
EMF(Open type) add 12dB (6dB for the
“Dummy” and 6dB for EMF-reading).

2. For Signal Generator with reading in dBm add 6
dB for “Dummy”

STEP

1

Head azimuth

adjustment

Tape Speed

Figure 6

Figure 6

MTT-114N

or equivalent

MTT-114N

or equivalent

Speaker

Output

Speaker

Output

Head azimuth
adjustment screw

Turn the azimuth
screw to obtain
maximum level

Adjust for 3010­3020Hz

Tape Speed
adjustment

2

DESCRIPTION

TEST TAPE

CONNECTION

TEST

POINT

ADJUSTMENT

POINT

ADJUSTMENT

14

5. SCHEMATIC DIAGRAMS

5-1. BASIC Series AKF-0305 / AKF-0315

Size:A3

15

5-2. RDS Series AKF-0305 / AKF-0315

SCHEMATIC DIAGRAM

Size:A3

16

5-3. OIRT Series AKF-0305 / AKF-0315

SCHEMATIC DIAGRAM

Size:A3

6-1. PCB MAIN : AKF-0305/0315

17

6. PARTS LOCATION ON P.C. BOARD

PARTS SIDE

PARTS LOCATION ON P.C. BOARD

18

BOTTOM SIDE

6-2. PCB FRONT

AKF-0305 BASIC

19

PARTS LOCATION ON P.C. BOARD

PARTS SIDE

BOTTOM SIDE

20

PARTS LOCATION ON P.C. BOARD

AKF-0305 RDS

PARTS SIDE

BOTTOM SIDE

21

PARTS LOCATION ON P.C. BOARD

AKF-0315 BASIC

PARTS SIDE

BOTTOM SIDE

22

PARTS LOCATION ON P.C. BOARD

AKF-0315 RDS

PARTS SIDE

BOTTOM SIDE

23

7. OVERALL EXPLODED VIEW & PARTS LIST

7-1. AKF-0305 Basic, RDS

Size:A3

7-2. AKF-0315 Basic, RDS

24

OVERALL EXPLODED VIEW & PARTS LIST

Size:A3

8-1. EXPLODED VIEW (ADM-21)

25

8. DECK MECHANISM EXPLODED VIEW & PARTS LIST

DECK MECHANISM EXPLODED VIEW & PARTS LIST

26

8-2. PARTS LIST

No PART CODE

97YM002600

97YM002900

97Y0900800

97Y2100400

97Y2101000

97Y0900200

97Y8000300

97Y6400100

97YM003200

97Y3000400

97YM003100

97Y3000300

97Y2700400

97Y2700800

97Y2100500

97Y8100200

WP-7021563

97Y2700700

97Y2400200

97Y2700900

97YM003400

97YM003500

97Y2101400

97Y3000800

97Y3700100

97Y3000900

97Y2700600

97Y2900200

97Y4100100

97Y2700500

97Y3000600

97Y3100100

97Y4000100

97Y3000500

97Y0400100

97Y2101500

97Y2701200

PART NAME

CHASSIS MAIN SUB AS

LEVER GEAR LOAD AS

PLATE REVERSE

ARM EJ CAM

ARM TAPE SELECT

PLATE HEAD

HEAD AS

TERMINAL EARTH

ARM PINCH R AS

SPRING PINCH ARM (R)

ARM PINCH F AS

SPRING PINCH ARM (F)

GEAR REDUCTION

GEAR WORM WHEEL

ARM IN SW

MOTOR SUB

WIRE RIBBON

GEAR WORM

BRACKET MOTOR

CAM EJECT

BRACKET L AS

ARM TAPE CATCH A AS

ARM TAPE CATCH (B)

SPRING TAPE CATCH ARM

PULLEY IDLE

SPRING TU ARM

GEAR TU

REEL SPINDLE

FELT REEL

GEAR REEL

SPRING REEL

WASHER REEL

BUSHING REEL

SPRING REEL CAP

CAP REEL

ARM DETECT GEAR

GEAR DETECT

DESCRIPTION

ADM-22 FULL LOGIC DECK

ADM-22 FULL LOGIC DECK

SUS-304 1/2H T0.4

EGSAFC45R T0.8

EGSAFC45R T0.8

EGSAFC45R T0.8

HEAD+FPC

ET T0.2

ADM-22 FULL LOGIC DECK

SWP-B PI0.65 TORS

ADM-22 FULL LOGIC DECK

SWP-B PI0.65 TORS

POM DURACON M90-44 (N)

POM DURACON OL-10 (N)

EGSAFC45R T0.8

FF-050SH-11190

AWG28 2P

POM DURACON M90-44 (N)

EGSAFC45R T0.8

EGSAFC45R T0.8

ADM-22 FULL LOGIC DECK

ADM-22 FULL LOGIC DECK

EGSAFC45R T0.8

SWP-B PI0.65 EXTN

POM DURACON ES-5

SUS-403WPB PI0.2 EXTN

POM DURACON OL-10 (N)

POM DELRIN-500 (N)

FELT PI5.6XPI18XT0.8

POM DELRIN-500 (N)

SUS-304WPB PI0.7 CONE

PS PI4.0XPI18.0XT0.4

POM DURACON M90-44 (N)

SUS-304WPB PI0.3 COMP

POM DURACON M90-44 (N)

POM DURACON M90-44 (N)

POM DURACON M90-44 (BK)

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

ADM-22

27

DECK MECHANISM EXPLODED VIEW & PARTS LIST

No PART CODE

97Y9300200

97Y3001100

97Y3001200

97Y0900400

97Y2700100

97Y3001300

97Y3001000

97Y0400200

97Y3300100

97Y3700700

97Y8100300

WP-7030803

97Y2900400

97Y5500200

1SPI31525-

5S40101A19

97Y6500700

97Y3900100

97Y0900100

97YC000500

97Y2300100

97Y0900700

97Y4200100

97Y2600100

97Y2101300

97Y2400300

97YC000600

97Y5700100

7003200211

7273200311

7273200411

7273170511

7273201011

7173260611

97Y3900200

97Y3900300

97Y3900600

97Y3900500

97Y3900700

PART NAME

LABEL REFLECTION

SPRING DETECT ARM

SPRING HEAD PLATE

PLATE REVERSE B

GEAR POWER

SPRING SELECT ARM

SPRING IN SW ARM

COVER BRUSH

BRUSH CONTROL

PULLEY MOTOR

MOTOR MAIN

WIRE RIBBON

FLYWHEEL AS

BELT MAIN

IC PHOTO REFLECTOR

SW PUSH

PCB REFLECTOR A

POLYSLIDER FLYWHEEL

PLATE BOTTOM

PCB CONNECTION AS

HOLDER CASSETTE

PLATE SPG CASS HOLD

CUSHION HOLDER

HOOK TAPE

HANGER CASSETTE

BRACKET PCB

PCB EQ AS

STOPPER REV PLT B

SCREW MACHINE

SCREW TAPTITE

SCREW TAPTITE

SCREW TAPTITE

SCREW TAPTITE

SCREW TAPTITE

POLYSLIDER WASHER

POLYSLIDER WASHER

POLYSLIDER WASHER

POLYSLIDER WASHER

POLYSLIDER WASHER

DESCRIPTION

ALS T0.05 PI15.8

SWP-B PI0.4

AWP-B PI0.4 EXTN

EGSAFC45R T0.8

SMF5030

SUS-304WPB PI0.25 EXTN

SUS-304WPB PI0.25 EXTN

POM DURACON M90-44 (BK)

GNP T0.1

MBSBM

MC15U3LDCN

AWG28 3P

ZDC2/C2700/SUS-420J2

EPDM PI120.3XT1

SPI-315-25

SW-110 1C-1P NORMAL OPEN

XPC 78X57XT0.8

PS PI8.0XT0.3

EGSAFC45R T0.6

ADM-22 FULL LOGIC DECK

EGSAFC45R T0.8

SUS-304WPB T0.2

EVA 6.5X6.5XT1.0

POM DURACON M90-44 (N)

EGSAFC45R T0.8

SECC-E T0.8

ADM-22 FULL LOGIC DECK

SUS-304 T0.2

BIN M2X2.5 MFZN

TT3 BIN 2X3 MFZN

TT3 BIN 2X3.5 MFZN

TT3 BIN 1.7X5 MFZN

TT3 BIN 2X10 MFZN

TT2 BIN 2.6X6 MFZN

PS PI1.2XPI3.2XT0.25

PS PI1.5XPI3.2XT0.25

PS PI1.5XPI3.2XT0.4

PS PI2XPI4XT0.4

PS PI1.9XPI3.2XT0.25

38

39

40

41

42

43

44

45

46

47

48

49

50

51

52

53

54

55

56

57

58

59

60

61

62

63

64

65

S1

S2

S3

S4

S5

S6

W1

W2

W3

W4

W5

ADM-22

9-1. MAIN SECTION

28

DESCRIPTION

1SAA6579T-

IC101

IC DRIVER LB16411LB1641---

IC301

IC ISOLATION BA-3121 (When it is CD Changer)1BA3121---

IC302

1LC75372E-

IC304

IC AUDIO POWER HA13158A1HA13158A-

IC305

IC REGULATOR KIA 7808P TO-220AB1K1A7808P-

IC306

IC CHIP CUSTOM LC72366-9433, W/RDS Version

LC72362-9443, W/O RDS Version

1LC72366-­1LC72362--

IC401

IC CHIP EEPROM 24LC16B-1/SN124LC16BSQ

IC402

IC REGULATOR KIA78S05P AUTO1Z1A78S05P

IC403

JACK ANT ANT. J-020-03 97T6366900

J101

LED LT6311-S4 RED WITH HOLDERDLT6311S4-

LD101

COIL CHOKE 37 x 1 x 5.2 300UH P EI-19MM5LC301PA18

L301

R SEMI FIXED H500K-5 x 5-6N-PC-BSRV1417504-

RV108

TUNER MODULE CET-6048 FM/MW/LW

*OIRT BAND

TUNER FM 1-CHIP AS CAT-7-NC

97T7609100
PNFCMBJV00

TU001

WIRE LEAD AWG26 7/0. 16 RD 10-100-10W144RD1017

W01, W13

CRYSTAL QUARTZ HC-49/S 4.332MHZ 25PPM5XJZ4R332D

CT102

CRYSTAL QUARTZ HC-49/S 4.5MHZ 30PPM5XJZ4R500E

CT401

DIODE ZENER MTZ-10V 26MM TAPPING DKTZ10B---

D102

D102

DIODE ZENER MTZ-9.1V AUTO 26MM

*OIRT BAND

DKTZ9R1B--

DKTZ5R1B--

D104, D403

DIODE KN4004A AUTO 26MM

D301, D307, D308
D309, D310

DIODE ZENER MTZ-9.1V AUTO 26MM

DIODE ZENER MTZ-6.8V AUTO 26MM

DKTZ9R1B--

D302, D305

DKTZ6R8B--

D303

DIODE 1SS133 AUTO 26MM

DKSS133---

D304, D306, D313

D401, D404, D405

D409, D410, D411

D413, D416, D419

D420, D421, D422

D423, D424, D426

D427

DIODE ZENER MTZ-5.6V AUTO 26MM

DIODE ZENER MTZ-6.2V AUTO 26MM

DKTZ5R6B--

D402

DKTZ6R2B--

D417

DIODE KN4148 AUTO 26MMDKN4148---

D418, D429

COIL INDUCTOR 0.56UH K 02 TA 26MM

*Option

5LL568K02K

L101

TR KRC102M (KEC)

TZRC102M--

Q101, Q106, Q109

Q302, Q305, Q307

Q311, Q314

TR KTC-3199Y TAPPING

TZTC3199Y-

Q102, Q103, Q304
Q401, Q402

Ref

PART NO.

IC AUDIO SAA6579T (RDS Demodulator)

IC CHIP EVR LC75372E MFP36S

DIODE ZENER MTZ-5.1V AUTO 26MM

DKN4004A--

9. PARTS LIST

R

R

R

R

R

R

R

CAUTION

is a recommendable part for essential stock.

R

PARTS LIST

29

DESCRIPTION

TR KTC3205Y (2236Y)

TR KTA-105M

TR DTC323TSA SPT

TR KRA 101M AUTO (2201)

TR 2SB1240R

TR KTA1273Y (966Y)

TR KTA1267Y TAPPING

PART NO.

TZTC3205Y-

Ref

DESCRIPTIONPART NO.

Ref

Q104

TZRA105M--

Q105, Q107

TZDTC323TS

Q110, Q111, Q313
Q316, A317

TZRA101M--

Q301

TZ2SB1240R

Q303

TZTA1273Y-

TZTA1267Y-

Q306, Q315

Q310

IC DRIVER LC75854E QIP64E, with RDS Version1LC75854E-

IC501

LC75852, W/O RDS Version1LC75852--

LCD TTD-1464UPTDPN with RDS Version97T0L1160P

LCD

TTD-1869UPTDPN, W/O RDS Version97T0L1320P

PL01 ~ PL05

LAMP PILOT 8V 60MA D3. 2 0. 08

SW TACT 1C-1P SKQC10918B 260G

SW TACT 1C-1P KPT-1107BC 200G

97T82L0D86

5S50101Z02

SW01

DIODE CHIP 1MN10

5S51120CK1

D1MN10---B

SW02

D501 ~ D504

9-2. FRONT SECTION

R

R

R

R

R

R

30

10. FUNCTION OF MICOM IC

10-1. PIN CONFIGURATION (TOP VIEW) : RDS MODEL ONLY

31

FUNCTION OF MICOM IC

10-2. PIN DESCRIPTION

PIN

1
80
78
77

71

76
73
31
75

74

72

70

69

68

67

79

51
50

PIN NAME

XIN 4.5MHz CRYSTAL

PHASE COMPARISON OUTPUT PORT

If the frequency of the partial oscillation is higher than the basic
frequency, these output high, lower than the basic frequency, output
low. Otherwise, these are high-z that those frequencies correspond.

AM 2 nd CHARGE PUMP OUTPUT PORT.
(AM FREQUENCY : 90kHz)

CAN BE SUPPLIED UP TO 6.5V

FM VCO INPUT

(the signal of the partial oscillation)

* INPUT RANGE : 0.07~1.5 Vrms

* INPUT RANGE : 0.07~1.5 Vrms

Outputs the pll lock up signal to lock up the pll frequency in
high speed.

FM IF COUNT INPUT

*

INPUT RANGE : 10.7MHz+30kHz, Vpp=0.07~1.5Vrms

AM IF COUNT INPUT

* INPUT RANGE : 450kHz + 1kHz (AM)

: 450kHz + 0.37kHz (LW)

* Vpp = 0.07 ~1.5Vrms

To check if the memory state is normal on the back-up mode.
The application circuit is illustrated on the note of back pages.

To check if it is back-up mode(LOW) or normal operation state(HIGH),
but it display clock depending on the clock option.

Connect to ground.

Dm-21 loading motor control port.

MTR1 MTR2
LOADING : HIGH LOW
EJECT : LOW HIGH
STOP : LOW LOW

AM VCO INPUT

(the signal of the partial oscillation)

XOUT

E01

E02

E03

VSS

VDD

VDD

FMIN

AMIN

SUBPD

HCTR

LCTR

SNS_

HOLD_

TEST1

TEST2

PL1

PL2

DESCRIPTION I/O

I

O

O

O

O

--

--

--

I

I

O

I

I

I

I

--

--

O

O

32

FUNCTION OF MICOM IC

PIN

59
52

53
54
55

11
12
13
14

21

40
38
39

27
28
29
30

23
24
25
26

7
8
9

63

35

PIN NAME

PJ1

PL0

DM-21 MAIN MOTOR CONTROL PORT.

INPUT DATUM FROM THE RDS DEMODULATOR IC THE
TIMING CHART OF DATA IS ILLUSTRATED ON BACK
PAGES.

KEY & LCD DRIVER IC INTERFACE PORTS

EVR IC INTERFACE PORTS.

OPTION DIODE MATRIX INPUT.

OPTION DIODE MATRIX OUTPUT.

RDS DATA MEMORY EEPROM CONTROL PORT.

MULTI-PATH INPUT PORT.

* INPUT RANGE : 0.6~0.9V

LCD BACK-LIGHTING COLOR CONTROL PORT

RESET : COLOR

---

> LOW

TWO KEY IN : COLOR CHANGE

DECK EQ IC MUTE ADJUST PORT.

PK3

PK2

INT1

PE3/SI2

PE2/SO2

PE1/SCK2

PE0

PC1

PO0

PO2

PO1

PA3

PA2

PA1

PA0

PB3

PB2

PB1

PB0

PF3

PF2

PF1

PF3

PP1

DESCRIPTION I/O

O

O

I

I

I

I

O

O

O

O

O

O

O

I

I

I

I

O

O

O

O

I

O

O

I

O

MTR_ON MTR_FF
PLAY : HIGH LOW
FF/REW : HIGH HIGH
STOP : LOW LOW

33

FUNCTION OF MICOM IC

KEY MATRIX TABLE

RETURN

SOURCE

KS 6 (49)

M1 (AMS)

T. U P

KI 1 (50) KI 2 (51) KI 3 (52) KI 4 (53) KI 5 (54)

T. DOWN

M2 (DOLBY)

M5

(DISC DOWN)

VOL DOWN

---

---

SEEK UP

M3 (RPT)

M6

(DISC UP)

SELECTOR

CDC/PAUSE

AUX

SEEK DOWN

LOC

TA/TA_STBY

PTY(DISP)

POWER
ON/OFF

RADIO/BAND

(LANG)

MONO

LOUD/LOC

AF/REG

ATP

TAPE EJECT

MUTE

---

M4 (SHUF)

VOL UP

TAPE/PGM

---

KS 5 (48)

KS 4 (47)

KS 3 (46)

KS 2 (45)

KS 1 (44)

KEY MATRIX TABLE

DIODE MATRIX DESCRIPTIONS

SOURCE

RETURN

ODR 3

(PA3, 27PIN)

DOUBLE 2

(D405)

---

ODST 3

(PB3, 23PIN)

ODST 2

(PB2, 24PIN)

ODST 1

(PB1, 25PIN)

ODST 0

(PB0, 26PIN)

---

LOUD/LOC

(D408)

TUNER 1,2

(D409)

AREA 2

(D410)

---

LW ENABLE

(D411)

---

AREA 3

(D413)

---

CDC/AUX IN

(D414)

DOUBLE 1

(D415)

---

CLOCK

(D406)

AREA 1

(D407)

ODR 2

(PA2, 28PIN)

ODR 1

(PA1, 29PIN)

ODR 0

(PA0, 30PIN)

-LW select (D411) 0 : LW BAND DISABLE
1 : LW BAND ENABLE

-CLOCK USE select (D406) 0 : CLOCK ENABLE
1 : CLOCK DISABLE

-LOUD/LOC USE select(D408) 0 : LOUD/LOCAL KEY DOUBLE FUNCTION
1 : LOUD KEY ONLY

-TUNER 1,2 select (D409) 0 : CAT6 or CAT7 TUNER See page 13
1 : CET6038AFL TUNER

-DOUBLE 1,2 (D415. D405)select

DOUBLE 1

(D415)

DOUBLE 2

(D405)

MEMORY 1 MEMORY 2

0

0 1 AMS

0 AMS DOLBY

---

34

FUNCTION OF MICOM IC

10-3. PIN CONFIGURATION (TOP VIEW) : NON RDS MODEL ONLY

35

FUNCTION OF MICOM IC

10-4. PIN DESCRIPTION

PIN

1
80
78

71

76
73
31
75

74

72

70

69

68

67

79

51
50

PIN NAME

XIN 4.5MHz CRYSTAL

PHASE COMPARISON OUTPUT PORT

If the frequency of the partial oscillation is higher than the basic
frequency, these output high, lower than the basic frequency, output
low. Otherwise, these are high-z that those frequencies correspond.

AM 2 nd CHARGE PUMP OUTPUT PORT.
(AM FREQUENCY : 90kHz)

CAN BE SUPPLIED UP TO 6.5V

FM VCO INPUT

(the signal of the partial oscillation)

* INPUT RANGE : 0.07~1.5 Vrms

* INPUT RANGE : 0.07~1.5 Vrms

Outputs the pll lock up signal to lock up the pll frequency in
high speed.

FM IF COUNT INPUT

*

INPUT RANGE : 10.7MHz+ 30kHz, Vpp=0.07~1.5Vrms

AM IF COUNT INPUT

* INPUT RANGE : 450kHz + 1kHz (AM)

: 450kHz + 0.37kHz (LW)

* Vpp = 0.07~1.5Vrms

To check if the memory state is normal on the back-up mode.
The application circuit is illustrated on the note of back pages.

To check if it is back-up mode(LOW) or normal operation state(HIGH),
but it display clock depending on the clock option.

Connect to ground.

Dm-21 loading motor control port.

MTR1 MTR2
LOADING : HIGH LOW
EJECT : LOW HIGH
STOP : LOW LOW

AM VCO INPUT

(the signal of the partial oscillation)

XOUT

E01

E02

E03

VSS

VDD

VDD

FMIN

AMIN

SUBPD

HCTR

LCTR

SNS_

HOLD_

TEST1

TEST2

PL1

PL2

DESCRIPTION I/O

I

O

O

O

O

--

--

--

I

I

O

I

I

I

I

--

--

O

O

36

FUNCTION OF MICOM IC

PIN

59
52

11
12
13
14

21

40
38
39

27
28
29
30

23
24
25
26

7
8
9

63

35

PIN NAME

PJ1

PL0

DM-21 MAIN MOTOR CONTROL PORT.

KEY & LCD DRIVER IC INTERFACE PORTS

EVR IC INTERFACE PORTS.

OPTION DIODE MATRIX INPUT.

OPTION DIODE MATRIX OUTPUT.

SECURITY MEMORY EEPROM CONTROL PORT.

REMOCON INPUT PORT.

LCD BACK-LIGHTING COLOR CONTROL PORT

RESET : COLOR

---

> LOW

TWO KEY IN : COLOR CHANGE

DECK EQ IC MUTE ADJUST PORT.

PE3/SI2

PE2/SO2

PE1/SCK2

PE0

PC1

PO0

PO2

PO1

PA3

PA2

PA1

PA0

PB3

PB2

PB1

PB0

PF3

PF2

PF1

PF3/ADI3

PP1

DESCRIPTION I/O

O

O

I

O

O

O

O

O

O

O

I

I

I

I

O

O

O

O

I

O

O

I

O

MTR_ON MTR_FF
PLAY : HIGH LOW
FF/REW : HIGH HIGH
STOP : LOW LOW

37

FUNCTION OF MICOM IC

KEY MATRIX TABLE

RETURN

SOURCE

KS 6 (51)

M1 (AMS)

T. U P

KI 1 (52) KI 2 (53) KI 3 (54) KI 4 (55) KI 5 (56)

T. DOWN

M2 (DOLBY)

M5

(DISC DOWN)

VOL DOWN

---

---

SEEK UP

M3 (RPT)

M6

(DISC UP)

SELECTOR

CDC/PAUSE

AUX

SEEK DOWN

---

SCAN

DISP

POWER
ON/OFF

RADIO/BAND

MONO

LOUD

LOC

ATP

TAPE EJECT

MUTE

---

M4 (SHUF)

VOL UP

TAPE/PGM

---

KS 5 (50)

KS 4 (49)

KS 3 (48)

KS 2 (47)

KS 1 (46)

OPTION DIODE TABLE

DIODE MATRIX DESCRIPTIONS

SOURCE

RETURN

ODR 3

(PA3, 27PIN)

DOUBLE 2

(D405)

---

ODST 3

(PB3, 23PIN)

ODST 2

(PB2, 24PIN)

ODST 1

(PB1, 25PIN)

ODST 0

(PB0, 26PIN)

---

---

TUNER 1,2

(D409)

AREA 2

(D410)

---

LW ENABLE

(D411)

---

AREA 3

(D413)

---

CDC/AUX IN

(D414)

DOUBLE 1

(D415)

---

CLOCK

(D406)

AREA 1

(D407)

ODR 2

(PA2, 28PIN)

ODR 1

(PA1, 29PIN)

ODR 0

(PA0, 30PIN)

-LW select (D411) 0 : LW BAND DISABLE
1 : LW BAND ENABLE

-CLOCK USE select (D406) 0 : CLOCK ENABLE
1 : CLOCK DISABLE

-LOUD/LOC USE select(D408) 0 : LOUD/LOCAL KEY DOUBLE FUNCTION
1 : LOUD KEY ONLY

-TUNER 1,2 select (D409) 0 : CAT6 or CAT7 TUNER See page 13
1 : CET6038AFL TUNER

-DOUBLE 1,2 (D415. D405)select

DOUBLE 1

(D415)

DOUBLE 2

(D405)

MEMORY 1 MEMORY 2

0

0 1 AMS

0 AMS DOLBY

---

38

FUNCTION OF MICOM IC

DIODE

AREA

AREA1

(D407)

AREA2

(D410)

AREA3

(D416)

EUROPE

CHINA

USA1

USA2

Australia

Middle East

OIRT

1

0

0

1

0

0

1

0

0

0

1

1

1

1

0

0

0

1

AREA 1, 2, 3

39

11. IC BLOCK DIAGRAM

11-1. LC75854/LC75852 (IC LCD DRIVER) : IC501

40

IC BLOCK DIAGRAM

11-2. SAA6579T (IC AUDIO) : IC101

41

IC BLOCK DIAGRAM

11-3. HA13158A (IC AUDIO POWER) : IC305

IC BLOCK DIAGRAM

42

11-4. LC75371M (IC EVR)

IC BLOCK DIAGRAM

43

11-5. 24LC16B (IC EEPROM) : IC402

IC BLOCK DIAGRAM

44

11-6. BA3121 (IC ISOLATOR) : IC302

IC BLOCK DIAGRAM

45

11-7. LB1641 (DRIVER) : IC301

46

12. LIQUID CRYSTAL DISPLAY

12-1. RDS ONLY

IC NO

LCD NO.

COM1

COM2

COM3

COM4

6

123456789101112131415

DOLBY

9B 9H 9A RPT 8B 8H 8A RDM 7B 7H 7A --- 6B 6H

MTL 9I 9G 9O 9F 8I 8G 8O 8F 7I 7G 7O 7F 6I 6G

AMS 9C 9K 9L 9N 8C 8K 8L 8N 7C 7K 7L 7N 6C 6K

TAPE IN

INTRO

9D 9M 9E

TRACK

8D 8M 8E DOT 7D 7M 7E

DISC

6D

4 5 7 39 38 37 36 35 34 33 30 34 32 29

IC NO

LCD NO.

COM1

COM2

COM3

COM4

13

31 32 33 34 35 36 37 38 39 40

2H 2A 1D LOC

LOUD COM1

--- --- ---

2G 2O 2F 1C 1E MO ---

COM2

--- ---

2K 2L 2N 1G 1F CH --- ---

COM3

---

2D 2M 2E 1B 1A AUT --- --- ---

COM4

12 11 10 9 8 40 41 42 43

IC NO

LCD NO.

COM1

COM2

COM3

COM4

28

16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

6A PTY 5B 5H 5A --- 4B 4H 4A --- 3B 3H 3A TA 2B

6O 6F 5I 5G 5O 5F 4I 4G 4O 4F 3I 3G 3O 3F 2I

6L 6N 5C 5K 5L 5N 4C 4K 4L 4N 3C 3K 3L 3N 2C

6M 6E 5D 5M 5E AF 4D 4M 4E TP 3D 3M 3E ---

27 26 25 24 23 22 21 20 19 18 17 16 15 14

47

LIQUID CRYSTAL DISPLAY

12-2. BASIC ONLY

IC NO

LCD NO.

COM1

COM2

1

123456789101112131415

LOUD

AUT

1A,1G

1H 1B

2B,2C
2E,2F

2D LOC 3B

3A,3D

3G

4A 4G 4C

4B

5A

ST

DISC

TRACK

1E,1F

1D 1C 2A VOL 3C 3E 4F 4E 4D 4H 5F

23456789101314151617

IC NO

LCD NO.

COM1

COM2

18

16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

5G 5C 5B 6A 6G 6C 6B 7A7F7G 7C 7B 8A 8G

8C

8B

5E 5D 5H 6F 6E 6D 6H 7E 7D P 8F 8E 8D

19 20 21 22 23 24 25 26 27 28 29 30 31 32

IC NO

LCD NO.

COM1

COM2

33

31 32 33 34 35 36 37 38 39 40

9A 9G 9C 9B CH INT

TAPE IN

AMS

DOLBY

COM1

---

9F 9E 9D CH RPT MTL ---

COM2

34 35 36 37 38 39 40 44 45

13. OUTPUT CONNECTOR DESCRIPTIONS

48

OUTPUT CONNECTORS

13PIN CONNECTOR

8PIN CONNECTOR 26PIN ISO CONNECTOR

18PIN CONNECTOR

1

REAR LEFT SP(-)

REAR RIGHT SP(+)

NEGATIVE GROUND

RIGHT (ILLUMINATION)

BATTERY B+(BACK-UP)

FRONT RIGHT SP(-)

FRONT LEFT SP(-)

REAR RIGHT SP(-)

AUTO ANT

ACC B(+)POWER

FRONT RIGHT SP(+)

FRONT LEFT SP(+)

REAR LEFT SP(+)

8

9

10

11

12

13

2

3

4

5

6

7

1

CDC-ON

BACK-UP B+

NO CONNECTION

DATA

GROUND

R-CH

L-CH

SIGNAL GROUND

2

3

4

5

6

7

8

1

FRONT R-CH SP(+)

REAR R-CH SP(-)

ILLUMINATION (-)

AUTO ANT. B+

NO CONNECTION

GROUND

NO CONNECTION

NO CONNECTION

REAR L-CH SP(-)

FRONT L-CH SP(-)

REAR R-CH SP(+)

ILLUMINATION(+)

ACC. B(+)

BACK UP B+

NO CONNECTION

REAR L-CH SP(+)

FRONT L-CH SP(+)

FRONT R-CH SP(-)

10

11

12

13

14

15

16

17

18

2

3

4

5

6

7

8

9

4. yellow...back-up
dc+12v

5. blue...remote

dc+12v(power ant)

6. Dimmer(option)

7. red...power supply

8. black...ground

1. vilot...rear right(+)

2.

vilot/black...rear right(-)

3. gray.../front right(+)

4.

gray/black...front right(-)

5. white...front left(+)

6.

white/black...front left(-)

7. green...rear left(+)

8.

green/black...rear left(-)

C OTHERS

5. black...ground

6. orange...12v preamp(+)

8. red...preamp R-ch

10. white...preamp L-ch

A

BC

DAEWOO ELECTRONICS CO., LTD

686, AHYEON-DONG MAPO-GU
SEOUL, KOREA
C.P.O. BOX 8003 SEOUL, KOREA
TELEX : DWELEC K28177-8
CABLE : “DAEWOOELEC”
E-mail : [e-mail]
TEL : [phone]
FAX : [phone]

edited by Mc. Cem