Daewoo AKD-0275 Series Service Manual
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Daewoo AKD-0275 Series Service Manual

Daewoo AKD-0275 Series Service Manual

Car audio basic rds
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Service Manual
Car Audio
MODEL : AKD-0275 Series
AKD-0285 Series
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
ISO DIN Chassis for Easy Installation
DAEWOO ELECTRONICS CO., LTD
http://svc.dwe.co.kr
S/M No:AKD0275EF0
Basic, RDS
Jan. 2000

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Summary of Contents for Daewoo AKD-0275 Series

  • Page 1 S/M No:AKD0275EF0 Service Manual Car Audio Basic, RDS MODEL : AKD-0275 Series AKD-0285 Series 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 ISO DIN Chassis for Easy Installation DAEWOO ELECTRONICS CO., LTD...

  • Page 2: Table Of Contents

    TABLE OF CONTENTS 1. PRODUCT SPECIFICATIONS ........1 2.

  • Page 3: Product Specifications

    1. PRODUCT SPECIFICATIONS 1-1. TECHNICAL SPECIFICATION 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) TUNER SECTION (FM) Tuning range : 87.5 to 108MHz...

  • Page 4: Line Drawing

    2. LINE DRAWING 2-1. AKD-0275 FRONT SIDE WITHOUT RDS FUNCTION : BASIC WITH RDS FUNCTION : RDS - 2 -...
  • Page 5 LINE DRAWING 2-2. AKD-0285 FRONT SIDE WITHOUT RDS FUNCTION : BASIC WITH RDS FUNCTION : RDS - 3 -...
  • Page 6 LINE DRAWING 2-3. AKD-0275/AKD-0285 REAR SIDE - 4 -...

  • Page 7: Adjustments

    3. ADJUSTMENTS 3-1. CONNECTIONS EQUIPMENTS - 5 -...
  • Page 8 ADJUSTMENTS 3-2. ADJUSTMENT LOCATIONS IN TUNER MODULES - 6 -...
  • Page 9 ADJUSTMENTS 3-3. AM (MW/LW) 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 .......
  • Page 10 ADJUSTMENTS 3-4. FM 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.

  • Page 11: Schematic Diagram

    Size:A3 4. SCHEMATIC DIAGRAM 4-1. BASIC Series AKD-0275/0285 - 9 -...
  • Page 12 Size:A3 SCHEMATIC DIAGRAM 4-2. RDS Series AKD-0275/0285 - 10 -...
  • Page 13 Size:A3 SCHEMATIC DIAGRAM 4-3. CDP Circuit for AKD-0275/0285 (DCM-200/201) - 11 -...

  • Page 14: Parts Location On P.c. Board

    5. PARTS LOCATION ON P.C. BOARD 5-1. PCB MAIN : AKD-0275/0285 PARTS SIDE - 12 -...
  • Page 15 PARTS LOCATION ON P.C. BOARD BOTTOM SIDE - 13 -...
  • Page 16 PARTS LOCATION ON P.C. BOARD 5-2. PCB FRONT AKD-0275 BASIC PARTS SIDE BOTTOM SIDE - 14 -...
  • Page 17 PARTS LOCATION ON P.C. BOARD AKD-0275 RDS PARTS SIDE BOTTOM SIDE - 15 -...
  • Page 18 PARTS LOCATION ON P.C. BOARD AKD-0285 BASIC PARTS SIDE BOTTOM SIDE - 16 -...
  • Page 19 PARTS LOCATION ON P.C. BOARD AKD-0285 RDS PARTS SIDE BOTTOM SIDE - 17 -...
  • Page 20 PARTS LOCATION ON P.C. BOARD 5-3. PCB Sub PARTS SIDE BOTTOM SIDE - 18 -...

  • Page 21: Overall Exploded View & Parts List

    Size:A3 6. OVERALL EXPLODED VIEW & PARTS LIST 6-1. AKD-0275 BASIC & RDS - 19 -...
  • Page 22 Size:A3 OVERALL EXPLODED VIEW & PARTS LIST 6-2. AKD-0285 BASIC & RDS - 20 -...

  • Page 23: Deck Mechanism Exploded View & Parts List

    Size:A3 7. DECK MECHANISM EXPLODED VIEW & PARTS LIST - 21 -...
  • Page 24 DCM-201 DECK MECHANISM EXPLODED VIEW & PARTS LIST SUB ASSY PARTS LIST MARK PART NAME PART NO. Q’TY CHASSIS SIDE TOTAL ASSY CHASSIS SIDE ASSY 97LA202300 LOCK PLATE R ASSY 97LA202400 WASHER CUT D4xD2xT0.25 97L3101500 MOVING PLATE R ASSY 97LA202500 SPG MOVING PLATE 97L3003900 CHASSIS GEAR TOTAL ASSY...
  • Page 25 DCM-201 DECK MECHANISM EXPLODED VIEW & PARTS LIST PART NAME PART NO. Q’TY MARK GEAR SLED SCREW 97L2702700 SLIDER RACK 97L5200300 SPG SLED INSERT 97L5200100 SCREW MACHINE PAN M1.7x3 97L3102100 HOLDER FEED MOTOR 97L2301100 GEAR CENTER 97L2702800 MOTOR FEED 97L8100600 GEAR FEED MOTOR 97L2703300 SCREW MACHINE PAN M2x5 SW...
  • Page 26 DCM-201 DECK MECHANISM EXPLODED VIEW & PARTS LIST PART NAME PART NO. Q’TY MARK GEAR RELAY 2 97L2703000 GEAR RELAY 1 97L2702900 WASHER CUT D6xD2.6xT0.25 97L3101600 WASHER CUT D4xD1.6xT0.25 97L3101400 ROLLER BUSH 97L3701100 BRACKET DOOR 97L2401400 SCREW TAPTITE SPL M2x3.5 97L3101300 DECK TOTAL ASSY PARTS LIST PART NAME...

  • Page 27: Parts List

    8. PARTS LIST CAUTION is a recommendable part for essential stock. MAIN SECTION LOCATION CODE NAME DESCRIPTION B001 97T65918MA PCB MAIN T1.6/2 CW101 97T62E7213 WAFER CN-W 00-8283-1311-000 CW102 97T6221000 CONNECTOR ELCO FFC/FPC 6200 18P CW104 97T6220900 CONNECTOR SKWB-20-S/P-T.T DL101 DLT4H11G41 LT4H11G-41(RED) D901 DRL203----...

  • Page 28: Front Section

    PARTS LIST LOCATION CODE NAME DESCRIPTION Q105,Q123 TZRA101M-- KRA101M(AUTO) Q106,Q111,Q121,Q128 TZ2SD1862R 2SD1862R AUTO Q107,Q131 TZTA1267Y- KTA1267Y TAPPING Q110,Q127 TZ2SB1240R 2SB1240R Q115,Q116,Q119,Q120,Q125 TZRC231M-- KRC231M(KEC) XT101 5XJX4R500E CRYSTAL QUARTZ 4.5MHZ 12PF 49/S XT102 TZRC231M-- CRYSTAL QUARTZ HC-49/U 4.332MHZ (RDS) Q102,Q103 TZTC3199Y- KTC-3199Y TAPPING FRONT SECTION LOCATION CODE...
  • Page 29 PARTS LIST SUB SECTION LOCATION CODE NAME DESCRIPTION B003 97T65918SB PCB SUB AKD-0275R CW701 97T6218800 CONNECTOR SK-1.8-12P DETACHABLE CW702 97T6220400 CONNECTOR E28-5084-013-000-808 SW701 5S50101Z02 SW TACT 1C-1P SKQC10918B 260G SW702 5S50101A08 SW TACT SKHV109 18C LG CONN ACCESSORY BUYER CODE NAME DESCRIPTION RDS : INTERCONTI...

  • Page 30: Function Of Micom Ic

    9. FUNCTION OF MICOM IC 9-1. PIN CONFIGURATION - 28 -...
  • Page 31 FUNCTION OF MICOM IC 9-2. PIN DESCRIPTIONS PIN NAME DESCRIPTION CONNECTION TO 4.5 MHz CRYSTAL XOUT OUTPUT COMPAIRED WITH PHASE IF LOCAL OSCILLATION FREQUENCY IS HIGHER THAN STANDARD FREQUENCY. OUTPUT IS HIGH, IF NOT OUTPUT IS LOW, AND IF SAME OUTPUT IS HIGH-Z.
  • Page 32 FUNCTION OF MICOM IC PIN NAME DESCRIPTION TUNER MUTE PORT. WHEN TUNING, OUTPUT IS HIGH THEN MUTE IS ON. (SEEK, WHEN SD CHECK) AUDIO MUTE PORT, ACTIVE HIGH AFTER FRONT PANEL IS RELEASED, LAMP IS EXTINGUISHED IN LAMP 20 SECONDS OUTPUT PORT OF BEEP.
  • Page 33 FUNCTION OF MICOM IC PIN NAME DESCRIPTION DETACHABLE ON/OFF INPUT PORT CONTACT HIGH SEPARATE LOW WARING LED OUTPUT PORT. 1 : 3 TO TURN ON AND OFF LED BY CYCLE OF 1 SEC. WIRELESS REMOCON DATA INPUT PORT REFER TO ATTACHED PAGE ABOUT RMC DATA FORMAT. INT0 CDP/CDC DISPLAY DATA INPUT PORT CDP/CDC CONTROL DATA OUTPUT PORT...
  • Page 34 FUNCTION OF MICOM IC PIN NAME DESCRIPTION OPTION DIODE MATRIX INPUT OPTION DIODE MATRIX OUTPUT CDP DISC EJECT KEY INPUT PORT P-EJTKEY DISC IN NO DISC CDC_SEL CDP_SEL CDP DISC IN CHECK INPUT (SENSOR2) DISC IN : HIGH NO DISC : LOW - 32 -...

  • Page 35: Ic Block Diagram

    10. IC BLOCK DIAGRAM 10-1. LC75854E (IC LCD DRIVER) - 33 -...
  • Page 36 IC BLOCK DIAGRAM 10-2. BU1924F / SAA6579T (IC RDS DEMODULATOR) - 34 -...
  • Page 37 IC BLOCK DIAGRAM 10-3. TDA8567Q (IC AUDIO POWER) - 35 -...
  • Page 38 IC BLOCK DIAGRAM 10-4. LC75371M (IC EVR) - 36 -...
  • Page 39 IC BLOCK DIAGRAM 10-5. 24LC16B (IC EEPROM) - 37 -...

  • Page 40: Liquid Crystal Display

    11. LIQUID CRYSTAL DISPLAY 11-1. AKD-0275/0285 BASIC COM1 COM2 COM3 PAD No. COM3 COM2 COM1 LOUD 1B.C INTRO DISC TRACK MUTE - 38 -...
  • Page 41 LIQUID CRYSTAL DISPLAY 11-2. AKD-0275/0285 RDS IC NO LCD NO. COM1 COL3 9B 8A RDM 7B 7A COL2 6B COM2 COM3 AMS 9C COM4 TAPE IN INTRO 9D 9E TRACK 8D 8E DOT 7D 7E DISC 6D IC NO LCD NO. COM1 COM2 COM3...

  • Page 42: Output Connection Descriptions

    12. OUTPUT CONNECTOR DESCRIPTIONS AKD-0275/0285 BASIC & RDS A. POWER SUPPLY B. 4-SPEAKERS 4. Yellow ... Back-Up Battery + 12V 1. Violet ... Rear Right (+) 5. Blue ... Remote DC + 12V (Power Ant) 2. Violet/Black ... Rear Right (-) 6.

  • Page 43: How To Install

    13. HOW TO INSTALL NOTE Use only the supplied mounting hardwares for safe and secure installation. Please consult your nearest dealer if you get any problem with installation. HOLDER Insert the holder into the car radio slot. Fasten the holder by pulling and bending the tabs which are located around the holder as illustrated.

  • Page 44: Detaching The Front Panel

    HOW TO INSTALL Detaching the front panel 1. Press the release knob to open up panel. 2. Holding the middle upper side of the panel, pull it straight out towards the arrow direction.(See the figure) 3. The red lamp blinks to tell you that the front panel has been detached.(It could be stolen) 4.
  • Page 45 HOW TO INSTALL Maintenance and Precautions FM car antenna When tuning in FM stations while the vehicle is moving, the vehicle will pass through changing signal conditions ranging from strong signals near broadcast stations to extremely weak signals. If any FM antenna is not used, the sensitivity may be reduced and the noise may increase as the signal conditions keep changing, For FM reception with a good sound quality and minimal noise, it is recommended that you attach a special FM car antenna.
  • Page 46 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 Mc. Cem edited by...

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