Page 1
Service Manual
Car Audio Basic, RDS & OIRT Band
S/M No:AKF0275EF0
MODEL : AKF-0275 Series
AKF-0285 Series
DAEWOO ELECTRONICS CO., LTD
http://svc.dwe.co.kr Jan. 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
Local/DX Switch
Loudness & Mute Controls
Flip-Down Detachable Face for Anti-Theft
Page 2
TABLE OF CONTENTS
1.
PRODUCT SPECIFICATIONS
..................................1
2. LINE DRAWING .............................................2
3. ADJUSTMENTS ...........................................5
4. SCHEMATIC DIAGRAM ..................................10
5. PARTS LOCATION ON P.C. BOARD .............................13
6. OVERALL EXPLODED VIEW & PARTS LIST ....................15
7. DECK MECHANISM EXPLODED VIEW & PARTS LIST .......17
8. PARTS LIST .............................................20
9. FUNCTION OF MICOM IC ..................................22
10. IC BLO C K DIAGRAM ..................................28
11. LIQUID CRYSTAL DISPLAY .............................32
12. OUTPUT CONNECTION DESCRIPTIONS ....................34
Page 3
- 1 -
1. PRODUCT SPECIFICATIONS
1-1. TECHNICAL SPECIFICATION
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) : Body 178 x 50 x 165 mm
: Escutcheon 188 x 58 x 15 mm
Weight (Net) : 2.7 kg
Design and specifications are subject to change for improvements without notice.
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( + 3
dB
), 10kHz(-5 +3dB)
TAPE SECTION
Track format : 2-track / 2-channel system
Tape speed : 4.75cm/sec
Wow / Flutter : 0.35% max. (WRMS)
Signal to Noise ratio : More than 50
dB
Channel Separation : More than 35
dB
Frequency response normal (LH)tape
: 63Hz to 10kHz ( + 3dB)
TUNER SECTION
(FM) Tuning range : 87.5 to 108MHz
87.5 to 107.9 at U.S.A
Usable Sensitivity(MONO) : 10
dB
u
(4uV/75ohms)
Stereo Separation : 30
dB
Signal to noise ratio (at 60dBu)
: More than 50
dB
(MW) Tuning range : 522 to 1620kHz at Europe
530 to 1710kHz at U.S.A
Usable Sensitivity : 28
dB
u
(LW) Tuning range (*option) : 144 to 288kHz
Usable Sensitivity : 40
dB
u
1-2. GENERAL SPECIFICATION
Page 4
2. LINE DRAWING
WITHOUT RDS FUNCTION
: BASIC
WITH RDS FUNCTION
: RDS
2-1. AKF-0275 FRONT SIDE
- 2 -
Page 5
LINE DRAWING
2-2. AKF-0285 FRONT SIDE
- 3 -
WITHOUT RDS FUNCTION
: BASIC
WITH RDS FUNCTION
: RDS
Page 6
LINE DRAWING
- 4 -
2-3. AKF-0275/AKF-0285 REAR SIDE
Page 7
3.
ADJUSTMENTS
- 5 -
3-1. CONNECTIONS EQUIPMENTS
Page 8
ADJUSTMENTS
3-2. ADJUSTMENT LOCATIONS IN TUNER MODULES
- 6 -
Page 9
ADJUSTMENTS
3-3. AM (MW/LW) ADJUSTMENT
- 7 -
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.8
Adjust AM RF1 and
AM RF2
for maximum output
Fig.8
Adjust AM RF1 and
AM RF2
for maximum output
Fig.8
Adjust LW OSC
for 1.2-1.35V(VT)
Fig.8
Adjust LW RF1 and
LW RF2
for maximum output
Fig.8
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
Page 10
ADJUSTMENTS
3-4. FM ADJUSTMENT
- 8 -
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.8
Adjust RV 101 Tuner PC
Board for2.7V=20mV at
TP102(IC401 pin 66)
Adjust MPX SEP
Fig.8
for maximum separation
Left and Right ch.
Adjust Stereo Blend
Fig.8 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
Page 11
ADJUSTMENTS
3-5. TAPE ADJUSTMENT
NOTE : 1. Clean the playback head before adjustment
2. Prepare the test tape MTT-144 or equivalent
3. Balance, Fader, Bass & Treble ....Center position. Volume adjusted to 2Volts.
Note
: dBu uV
dBuV 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-144N
or equivalent
MTT-144N
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
- 9 -
Page 12
4. SCHEMATIC DIAGRAM
4-1. BASIC Series AKF-0275/0285
- 10 -
Size:A3
Page 13
SCHEMATIC DIAGRAM
- 11 -
4-2. RDS Series AKF-0275/0285
Size:A3
Page 14
SCHEMATIC DIAGRAM
- 12 -
4-3. OIRT Band AKF-0275/0285
Size:A3
Page 15
5. PARTS LOCATION ON P.C. BOARD
PCB MAIN : AKF-0275/0285 Series
PARTS SIDE
- 13 -
Page 16
PARTS LOCATION ON P.C. BOARD
BOTTOM SIDE
- 14 -
Page 17
6. OVERALL EXPLODED VIEW & PARTS LIST
- 15 -
6-1. AKF-0275 BASIC & RDS
Size:A3
Page 18
OVERALL EXPLODED VIEW & PARTS LIST
- 16 -
6-2. AKF-0285 BASIC & RDS
Size:A3
Page 19
7. DECK MECHANISM EXPLODED VIEW & PARTS LIST
EXPLODED VIEW
- 17 -
Page 20
DECK MECHANISM EXPLODED VIEW & PARTS LIST
- 18 -
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
Page 21
DECK MECHANISM EXPLODED VIEW & PARTS LIST
- 19 -
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
Page 22
8-1. MAIN SECTION
8. PARTS LIST
- 20 -
Ref DESCRIPTIONS PART NO.
RDS demodulator
MOTER DRIVER
IC ISOLATION
IC CHIP EVR
IC AUDIO POWER
MICOM
IC CHIP EEPROM
JACK ANT
LED
LAMP PILOT
COIL CHOCK
R SEMI FIXED
TUNER
CRYSTAL QUARTZ
DIODE ZENER
DIODE
DIODE
SWITCHING DIODE
DIA SURGE PROTECTOR
TR
CONN WAFER
SOCKET DIN
1SAA6579T-
1)1LB1641---
2)1DBL2084N-
1BA3121---
1LC75372E-
1HA13158A-
1)12BS236652
2)12BS2362B1
3)12BS2362W0
124LC16BSQ
97T6366900
DLT6339S4-
97T82L2WE4
5LC301PA18
RV1417504-
CAT-6-NC
CAT-7-NC
CAT-8-NC
97T7610200
97T7609100
5XJZ4R332D
5XJZ4R500E
DKTZ6R8B--
DKTZ10B---
DKTZ5R6B--
DKN4004A--
D1N5402---
DKSS133---
DSP301NS0B
TKTD2058Y-
TKTD1366Y-
97TR6215902
97T6304000
DESCRIPTION
SAA6579T(RDS VERSION)
BA3121(When it is CD Changer)
LC75372E
HA13158A
1) LC72366-9572(RDS VERSION)
2) LC72362-9544(W/O RDS):BASIC VERSION
3) LC72362-9904(PMS ONLY in GREECE)
24LC16B-1/SN
ANT J-020-03
LT6339-S4 RED
14V 40MA D3.0 GN COLOR
37X1X5.2 300UH EI-19MM
H500K-5X5-6N-PC-BS(500K OHM)
CAT-6-NC FM/MW
CAT-7-NC FM/MW/LW
CAT-8-NC FM/OIRT/MW
KCC-516V(FM ONLY at PMS in GREECE)
CET-6048 FM/OIRT/MW/LW
4.332MHz 25PPM(RDS VERSION)
4.5MHz 30PPM
MTZ-6.8V
MTZ-10V
MTZ-5.6V
1N4004A BK
1N5402
1SS133
DSP-301N-S00B
KTD 2058-Y
KTB1366Y
5076-118-2.5mm
PCB TYPE 8PIN DIN
LB1641 or DBL2084N(PIN to PIN)
IC101
IC301
IC302
IC304
IC305
IC401
IC402
J101
DL401
PL401
L301
RV101
TU001
CT101
CT401
D302
D303
D413/414
D420
D301/304
D307/309
D305
D401-425
DP001
Q307
Q309
CW301
CW302
CAUTION
is a recommendable part for essential stock.
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
Page 23
PARTS LIST
- 21 -
8-2. FRONT SECTION
Ref DESCRIPTIONS PART NO.
CONNECTOR
COIL INDUCTOR
DECK MECHAMISM
TR
97T6220900
5LL568K02K
97T6009100
TZRC106M--
TZRA105M--
TZDTC323TS
TZTC3199Y-
TZRA108M--
TZTA1273Y-
TZ2SB1240R
TZTA1267Y-
TZRA108M--
DESCRIPTION
SKWB-20-S/P-TT
0.56UH K 02 *OPTION
ADM-22
KRC106M
KRA105M
DTC323TSA
KTC3199Y
KRA108M
KTA127Y(2SB1240R PIN to PIN)
KTA1267Y
KRA108M
CW303
L101
DECK
Q101/103
Q202/302
Q304/306
Q310/314
Q405
Q102/201
Q104/105
Q308/311
Q312
Q202/203
Q401/402
Q301
Q303/315
Q305
Q403/404
Ref DESCRIPTIONS PART NO.
LCD DISPLAY
SW CHIP
SW TACT
LED
CONNECTOR WAFER
CONNECTOR
LAMP PILOT
CAP LAMP
DIODE CHIP
LCD DRIVER
97T0L1400P
97T0L1560P
5S52643CL1
5S50101Z02
DLT4H11G41
97T6220100
97T6220400
97T82L0WE4
97T0420550
D1MN10---B
1LC75852--
1LC75854E-
(1HL14104--)
DESCRIPTION
TTD-3093UPTDPN PO(W/O RDS)
IS09035P :W/RDS VERSION
1C-1P SKMA 10918A 260G
1C-1P SKQC10918B 260G
LT4H11G-41(RED)
SK DETACHABLE 12P
E28-5084-013-000-808
14V 40MA D3.0
RUBBER GREEN
1MN10
LC75852 LCD DRIVER(W/O RDS)
LC75854E(HL14104 PIN to PIN):W/RDS
NOTE : When it uses HL14014,
you must delete C504/R505
LD501
DISP/SCAN
SW701
DL501
CW701
CN702
PL501-507
0F040
D501-503
IC501
R
R
R
R
R
R
R
R
R
R
R
Page 24
9. FUNCTION OF MICOM IC
- 22 -
9-1. PIN CONFIGURATION
Page 25
FUNCTION OF MICOM IC
- 23 -
9-2. PIN DESCRIPTION
PIN
1
80
78
77
71
76
73
31
75
74
72
70
69
68
67
79
2
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
Page 26
FUNCTION OF MICOM IC
- 24 -
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
Page 27
FUNCTION OF MICOM IC
- 25 -
KEY MATRIX TABLE (W/RDS) : LC75854
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)
OPTION DIODE TABLE : IC401(LC72366-9527)
DIODE MATRIX DESCRIPTIONS
SOURCE
RETURN
ODR 3
(PA3, 27PIN)
DOUBLE 2
(D410)
---
ODST 3
(PB3, 23PIN)
ODST 2
(PB2, 24PIN)
ODST 1
(PB1, 25PIN)
ODST 0
(PB0, 26PIN)
---
LOUD/LOC
(D407)
TUNER 1,2
(D408)
AREA 2
(D409)
---
LW ENABLE
(D404)
---
AREA 3
(D406)
---
CDC/AUX IN
(D401)
DOUBLE 1
(D402)
---
CLOCK
(D411)
AREA 1
(D412)
ODR 2
(PA2, 28PIN)
ODR 1
(PA1, 29PIN)
ODR 0
(PA0, 30PIN)
- LW select (D404) 0 : LW BAND DISABLE
1 : LW BAND ENABLE
- CLOCK USE select (D411) 0 : CLOCK ENABLE
1 : CLOCK DISABLE
- LOUD/LOC USE select(D407) 0 : LOUD/LOCAL KEY DOUBLE FUNCTION
1 : LOUD KEY ONLY
- TUNER 1,2 select (D408) 0 : CAT6 or CAT7 TUNER See page 6
- DOUBLE 1,2 (D402. D410)select
DOUBLE 1
(D402)
DOUBLE 2
(D410)
MEMORY 1 MEMORY 2
0
0 1 AMS
0 AMS DOLBY
---
Page 28
FUNCTION OF MICOM IC
- 26 -
KEY MATRIX TABLE (W/O RDS) : LC75852E
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 : IC401
DIODE MATRIX DESCRIPTIONS
SOURCE
RETURN
ODR 3
(PA3, 27PIN)
DOUBLE 2
(D410)
---
ODST 3
(PB3, 23PIN)
ODST 2
(PB2, 24PIN)
ODST 1
(PB1, 25PIN)
ODST 0
(PB0, 26PIN)
---
---
TUNER 1,2
(D408)
AREA 2
(D409)
---
LW ENABLE
(D404)
---
AREA 3
(D406)
---
CDC/AUX IN
(D401)
DOUBLE 1
(D402)
---
CLOCK
(D411)
AREA 1
(D412)
ODR 2
(PA2, 28PIN)
ODR 1
(PA1, 29PIN)
ODR 0
(PA0, 30PIN)
- LW select (D404) 0 : LW BAND DISABLE
1 : LW BAND ENABLE
- CLOCK USE select (D411) 0 : CLOCK ENABLE
1 : CLOCK DISABLE
- LOUD/LOC USE select(D407) 0 : LOUD/LOCAL KEY DOUBLE FUNCTION
1 : LOUD KEY ONLY
- TUNER 1,2 select (D408) 0 : CAT6 or CAT7 TUNER See page 6
- DOUBLE 1,2 (D402. D410)select
DOUBLE 1
(D402)
DOUBLE 2
(D410)
MEMORY 1 MEMORY 2
0
0 1 AMS
0 AMS DOLBY
---
Page 29
FUNCTION OF MICOM IC
- 27 -
DIODE
AREA
AREA1
(D407)
AREA2
(D410)
AREA3
(D413)
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 : W/O RDS Ver.
Page 30
10. IC BLOCK DIAGRAM
- 28 -
10-1. LC75854/LC75852 (IC LCD DRIVER) : IC501
Page 31
IC BLOCK DIAGRAM
- 29 -
10-2. LB1641 (DRIVER) : IC301
10-3. SAA6579T (IC AUDIO) : IC101
Page 32
IC BLOCK DIAGRAM
- 30 -
10-4. HA13158A (IC AUDIO POWER) : IC305
10-5. 24LC16B (IC EEPROM) : IC402
Page 33
IC BLOCK DIAGRAM
- 31 -
10-6. BA3121 (IC ISOLATOR) : IC302
Page 34
11. LIQUID CRYSTAL DISPLAY
11-1. AKF-0275/0285 BASIC (W/O RDS)
- 32 -
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
Page 35
LIQUID CRYSTAL DISPLAY
11-2. AKF-0275/0285 RDS Version
- 33 -
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
Page 36
12. OUTPUT CONNECTOR DESCRIPTIONS
AKF-0275/0285 BASIC & RDS
- 34 -
1 YELLOW
Back-up(+12)
Right Front Speaker
-
Right Front Speaker +
Left Rear Speaker
-
Left Rear Speaker +
NO CONNECTION
Line out (Right)
Line out (Left)
Ground
Right Rear Speaker
-
Right Rear Speaker +
Left Front Speaker
-
Left Front Speaker +
Power ANT
Illumination
Ignition Power (12+V)
GRAY/BLACK
GRAY
GREEN/BLACK
GREEN
BROWN
RCA JACK (RED)
RCA JACK (WHITE)
BLACK
VIOLET/BLACK
VIOLET
WHITE/BLACK
WHITE
BLUE
PINK
RED
3
4
5
6
7
8
9
11
13
14
15
16
17
18
19
NOTE:The red cable must be
connected via the car’s
ignition lock to prevent
unwanted discharge of
the car battery if it is not
used for longer periods
of time.
NOTE:If wiring connection are
made wrong, the unit will
not operate properly and
it could be damaged.
B. 4-SPEAKERS
1. Violet ... Rear Right (+)
2. Violet/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 (-)
A. POWER SUPPLY
4. Yellow ... Back-Up Battery + 12V
5. Blue ... Remote DC + 12V (Power Ant)
6. Pink ... Illumination
7. Red ... Power Supply DC + 12V (ACC)
8. Black ... Ground
Page 37
- 35 -
26PIN ISO CONNECTOR
4. yellow...back-up
dc+12v
5. blue...remote
dc+12v(power ant)
6. Dimmer(option)
7. red...power supply
8. black...ground
1. violet...rear right(+)
2.
violet/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
AB C
8PIN CONNECTOR
1
CDC-ON
BACK-UP B+
NO CONNECTION
DATA
GROUND
R-CH
L-CH
SIGNAL GROUND
2
3
4
5
6
7
8
Page 38
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 : G7F00E@web.dwe.co.kr
TEL : 82-2-360-7799
FAX : 82-2-360-7877
edited by Mc. Cem
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