Daewoo AKF-0305 Series Service Manual
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Daewoo AKF-0305 Series Service Manual

Car audio basic, rds & oirt band
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Service Manual
Car Audio Basic, RDS & OIRT Band
MODEL : AKF-0305 Series
AKF-0315 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
Loudness Controls
Local/DX Switch
Detachable Face for Anti-Theft
DAEWOO ELECTRONICS CO., LTD
http://svc.dwe.co.kr
S/M No : AKF0305EF1
Mar. 2000

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Summary of Contents for Daewoo AKF-0305 Series

  • Page 1 S/M No : AKF0305EF1 Service Manual Car Audio Basic, RDS & OIRT Band MODEL : AKF-0305 Series AKF-0315 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 Loudness Controls Local/DX Switch Detachable Face for Anti-Theft DAEWOO ELECTRONICS CO., LTD...

  • Page 2: Table Of Contents

    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.

  • Page 3: Product Specifications

    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 : 100Hz( + 3dB), 10kHz(-5 + 3dB) Frequency response : 10 + 3dB at 100Hz/10kHz Control Bass/Treble TAPE SECTION Track format...

  • Page 4: Line Drawing

    2. LINE DRAWING 2-1. AKF-0305 Front Side BASIC...
  • Page 5 LINE DRAWING 2-2. AKF-0315 Front Side BASIC...
  • Page 6 LINE DRAWING 2-3. REAR SIDE BASIC MODEL RDS MODEL RDS+CD CHANGER MODEL...

  • Page 7: Emergency Trouble Shoot

    3. EMERGENCY TROUBLE SHOOT 3-1. General Function Put exactly output Output connector No sound from connector in. is missing speakers Change output Output connector connector to is inferior goods superior goods Change Power IC, Power IC, Output Output Socket to Socket is inferior superior goods goods...
  • Page 8 EMERGENCY TROUBLE SHOOT 3-2. Tuner Function Select exactly No selected the broadcasting Hearing noise station frequency. only Ref. CAT-6, 7 etc Change tuner Tuner Module is Electrical Parts List module to inferior goods. superior goods. Weak frequency Change to goods of Extreme noise area caused by R.D.S function.
  • Page 9 EMERGENCY TROUBLE SHOOT 3-3. Tape Function Use only superior Tape is inferior No sound from goods goods speakers Put exactly deck No signal play output connector output Ref. Tape Deck Macha Change Deck Deck Mechanism Mechanism to ADM-21/22 is inferior goods. superior goods.
  • Page 10 EMERGENCY TROUBLE SHOOT 3-4. CDC Function Put one disc in Discs are fold in Disc is not magazine slot. magazine slot. inserted. Insert exactly Magazine is not magazine inserted rightly Ref. protective function Turn power off and Inside degree of is started caused by stop operation for No sound...

  • Page 11: Adjustments

    4. ADJUSTMENTS 4-1. EQUIPMENTS CONNECTIONS...
  • Page 12 ADJUSTMENTS 4-2. TUNER MODULE ADJUSTMENT LOCATIONS...
  • Page 13 ADJUSTMENTS 4-3. AM (MW/LW) ADJUSTMENT METHOD 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 14 ADJUSTMENTS 4-4. FM ADJUSTMENT METHOD 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 .......
  • Page 15 ADJUSTMENTS 4-5. TAPE ADJUSTMENT METHOD 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. TEST ADJUSTMENT STEP DESCRIPTION TEST TAPE CONNECTION ADJUSTMENT POINT...

  • Page 16: Schematic Diagram

    Size:A3 5. SCHEMATIC DIAGRAMS 5-1. BASIC Series AKF-0305 / AKF-0315...
  • Page 17 Size:A3 SCHEMATIC DIAGRAM 5-2. RDS Series AKF-0305 / AKF-0315...
  • Page 18 Size:A3 SCHEMATIC DIAGRAM 5-3. OIRT Series AKF-0305 / AKF-0315...

  • Page 19: Overall Exploded View & Parts List

    Size:A3 7. OVERALL EXPLODED VIEW & PARTS LIST 7-1. AKF-0305 Basic, RDS...
  • Page 20 Size:A3 OVERALL EXPLODED VIEW & PARTS LIST 7-2. AKF-0315 Basic, RDS...

  • Page 21: Deck Mechanism Exploded View & Parts List

    8. DECK MECHANISM EXPLODED VIEW & PARTS LIST 8-1. EXPLODED VIEW (ADM-21)
  • Page 22 DECK MECHANISM EXPLODED VIEW & PARTS LIST ADM-22 8-2. PARTS LIST PART CODE PART NAME DESCRIPTION 97YM002600 CHASSIS MAIN SUB AS ADM-22 FULL LOGIC DECK 97YM002900 LEVER GEAR LOAD AS ADM-22 FULL LOGIC DECK 97Y0900800 PLATE REVERSE SUS-304 1/2H T0.4 97Y2100400 ARM EJ CAM EGSAFC45R T0.8...
  • Page 23 DECK MECHANISM EXPLODED VIEW & PARTS LIST ADM-22 PART CODE PART NAME DESCRIPTION 97Y9300200 LABEL REFLECTION ALS T0.05 PI15.8 97Y3001100 SPRING DETECT ARM SWP-B PI0.4 97Y3001200 SPRING HEAD PLATE AWP-B PI0.4 EXTN 97Y0900400 PLATE REVERSE B EGSAFC45R T0.8 97Y2700100 GEAR POWER SMF5030 97Y3001300 SPRING SELECT ARM...

  • Page 24: Parts List

    9. PARTS LIST CAUTION is a recommendable part for essential stock. 9-1. MAIN SECTION PART NO. DESCRIPTION IC101 1SAA6579T- IC AUDIO SAA6579T (RDS Demodulator) IC301 1LB1641--- IC DRIVER LB1641 IC302 1BA3121--- IC ISOLATION BA-3121 (When it is CD Changer) IC304 1LC75372E- IC CHIP EVR LC75372E MFP36S...
  • Page 25 PARTS LIST PART NO. DESCRIPTION Q104 TZTC3205Y- KTC3205Y (2236Y) Q105, Q107 TZRA105M-- KTA-105M Q110, Q111, Q313 TZDTC323TS DTC323TSA SPT Q316, A317 Q301 TZRA101M-- KRA 101M AUTO (2201) Q303 TZ2SB1240R 2SB1240R Q306, Q315 TZTA1273Y- KTA1273Y (966Y) Q310 TZTA1267Y- KTA1267Y TAPPING 9-2. FRONT SECTION PART NO.

  • Page 26: Function Of Micom Ic

    10. FUNCTION OF MICOM IC 10-1. PIN CONFIGURATION (TOP VIEW) : RDS MODEL ONLY...
  • Page 27 FUNCTION OF MICOM IC 10-2. PIN DESCRIPTION PIN NAME DESCRIPTION 4.5MHz CRYSTAL XOUT 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.
  • Page 28 FUNCTION OF MICOM IC PIN NAME DESCRIPTION DM-21 MAIN MOTOR CONTROL PORT. MTR_ON MTR_FF PLAY : HIGH FF/REW : HIGH HIGH STOP : INPUT DATUM FROM THE RDS DEMODULATOR IC THE TIMING CHART OF DATA IS ILLUSTRATED ON BACK PAGES. INT1 PE3/SI2 KEY &...
  • Page 29 FUNCTION OF MICOM IC KEY MATRIX TABLE RETURN KI 1 (50) KI 2 (51) KI 3 (52) KI 4 (53) KI 5 (54) SOURCE KS 6 (49) T. UP T. DOWN SEEK UP LOUD/LOC KS 5 (48) M1 (AMS) M2 (DOLBY) M3 (RPT) TA/TA_STBY AF/REG...
  • Page 30 FUNCTION OF MICOM IC 10-3. PIN CONFIGURATION (TOP VIEW) : NON RDS MODEL ONLY...
  • Page 31 FUNCTION OF MICOM IC 10-4. PIN DESCRIPTION PIN NAME DESCRIPTION 4.5MHz CRYSTAL XOUT 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.
  • Page 32 FUNCTION OF MICOM IC PIN NAME DESCRIPTION DM-21 MAIN MOTOR CONTROL PORT. MTR_ON MTR_FF PLAY : HIGH FF/REW : HIGH HIGH STOP : PE3/SI2 KEY & LCD DRIVER IC INTERFACE PORTS PE2/SO2 PE1/SCK2 DECK EQ IC MUTE ADJUST PORT. EVR IC INTERFACE PORTS. OPTION DIODE MATRIX INPUT.
  • Page 33 FUNCTION OF MICOM IC KEY MATRIX TABLE RETURN KI 1 (52) KI 2 (53) KI 3 (54) KI 4 (55) KI 5 (56) SOURCE KS 6 (51) T. UP T. DOWN SEEK UP LOUD KS 5 (50) M1 (AMS) M2 (DOLBY) M3 (RPT) SCAN KS 4 (49)
  • Page 34 FUNCTION OF MICOM IC AREA 1, 2, 3 DIODE AREA1 AREA2 AREA3 AREA (D407) (D410) (D416) EUROPE CHINA USA1 USA2 Australia Middle East OIRT...

  • Page 35: Ic Block Diagram

    11. IC BLOCK DIAGRAM 11-1. LC75854/LC75852 (IC LCD DRIVER) : IC501...
  • Page 36 IC BLOCK DIAGRAM 11-2. SAA6579T (IC AUDIO) : IC101...
  • Page 37 IC BLOCK DIAGRAM 11-3. HA13158A (IC AUDIO POWER) : IC305...
  • Page 38 IC BLOCK DIAGRAM 11-4. LC75371M (IC EVR)
  • Page 39 IC BLOCK DIAGRAM 11-5. 24LC16B (IC EEPROM) : IC402...
  • Page 40 IC BLOCK DIAGRAM 11-6. BA3121 (IC ISOLATOR) : IC302...
  • Page 41 IC BLOCK DIAGRAM 11-7. LB1641 (DRIVER) : IC301...

  • Page 42: Liquid Crystal Display

    12. LIQUID CRYSTAL DISPLAY 12-1. RDS ONLY IC NO LCD NO. COM1 DOLBY 9B 8A RDM 7B 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 COM4...
  • Page 43 LIQUID CRYSTAL DISPLAY 12-2. BASIC ONLY IC NO LCD NO. 2B,2C 3A,3D COM1 LOUD AUT 1A,1G 1H 2D LOC 3B 2E,2F DISC COM2 1E,1F 1D TRACK IC NO LCD NO. COM1 COM2 IC NO LCD NO. COM1 INT TAPE IN AMS COM1 COM2 CH RPT MTL...
  • Page 44 13. OUTPUT CONNECTOR DESCRIPTIONS OUTPUT CONNECTORS 13PIN CONNECTOR 18PIN CONNECTOR 1 REAR LEFT SP(-) REAR RIGHT SP(+) 1 FRONT R-CH SP(+) REAR R-CH SP(-) REAR RIGHT SP(-) NEGATIVE GROUND REAR R-CH SP(+) ILLUMINATION (-) AUTO ANT ILLUMINATION(+) RIGHT (ILLUMINATION) AUTO ANT. B+ ACC B(+)POWER BATTERY B+(BACK-UP) ACC.

This manual is also suitable for:

Akf-0315 seriesAkf-0305 series

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