Daewoo AKF-8846 Service Manual
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Daewoo AKF-8846 Service Manual

Daewoo AKF-8846 Service Manual

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S e rvice Manual
CAR AUDIO
Model: A K F - 8 8 4 6 / 8 8 4 7
DAEWOO ELECTRONICS CO., LT D .

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Summary of Contents for Daewoo AKF-8846

  • Page 1 S e rvice Manual CAR AUDIO Model: A K F - 8 8 4 6 / 8 8 4 7 DAEWOO ELECTRONICS CO., LT D .

  • Page 2: Table Of Contents

    TABLE OF CONTENTS 11. PRODUCT SPECIFICAT I O N S 12. LINE DRAW I N G 13. PANEL INFORMAT I O N 3, 4 14. ELECTRICAL SPECIFICAT I O N 5 ~ 7 15. MICOM PIN CONFIGULATION & DESCRIPTIONS 8 ~ 1 0 16.

  • Page 3: Product Specifications

    1. PRODUCT SPECIFICATIONS GENERAL SPECIFICAT I O N A K F - 8 8 4 6 A K F - 8 8 4 7 P OWER REQU I R E M E N T - GROUND SYSTEM : NEGATIVE GRO U N D N E G ATIVE GRO U N D - OPERATING VO LTAG E : 14.4V DC SPEAKER IMPEDA N C E...

  • Page 4: Line Drawing

    2. LINE DRAWING F RONT SIDE REAR SIDE ANT JAC K H E AT SINK 18PIN I/O CONNECTO R 1 F RONT RIGHT SP(+) 1 0 REAR RIGHT SP (-) 2 REAR RIGHT SP(+) 1 1 ILL. CONTROL VO LT ( + V ~ G N D ) 3 ILL.

  • Page 5: Panel Information

    SELECT BUTTON PRESET STATION TUNING UP/DOWN BUTTONS (NO.1~6) BUTTONS D I S P L AY (AKF-8846) FM STEREO ON LOW BROADCASTING I N D I C A T O R INDICATOR V O L / B A S S / T R E B L E / F A D E R / B...
  • Page 6 D I S P L AY (AKF-8847) FM STEREO ON LOW BROADCASTING I N D I C A T O R I N D I C A T O R V O L / B A S S / T R E B L E / F A D E R / B PRESET BUTTON NUMBER ALANCE SELECT I N D I C A T O R...

  • Page 7: Electrical Specification

    4. ELECTRICAL SPECIFICATION 4-1. FM SECTION N O. I T E M TEST CONDITION U N I T N O M I N A L L I M I T ≤ 1 0 USABLE SENSITIVITY 90.1 MHz d B µ ≤...
  • Page 8 4-2. AM SPECIFICAT I O N N O. I T E M U N I T N O M I N A L L I M I T MW FREQUENCY TUNNING RANGE K Hz 5 3 1 - 1 6 0 2 5 3 1 - 1 6 0 2 USABLE SENS 603 KHz...
  • Page 9 4-3. TAPE & AUDIO SECTION N O. I T E M TEST CONDITION U N I T N O M I N A L L I M I T WOW & FLUTTER ≤ 0 . 3 5 M T T- 1 1 1 0 .

  • Page 10: Micom Pin Configulation & Descriptions

    5. MICOM PIN CONFIGURATION & DESCRIPTIONS 5-1. PIN CONFIGURATIONS (IC305)
  • Page 11 5-2. P O RT DESCRIPTION ASSIGN NAME D E S C R I P T I O N P_XIN 4.5 MHz CRYSTAL IN/OUT PORT. P_XOUT XOUT P_PUMP PHASE COMPARATOR OUTPLIT PORT. P_GND P_GND GND & VDD (+5V) P_VDD VDD1 P_VDD VDD2 P_FMVCO VCOH...
  • Page 12 ASSIGN NAME D E S C R I P T I O N P_WLED P0C0/PWM0 WARNING LED OUT PORT. ON/OFF TIME: 1SEC P_TPIN P1D1 TAPE INSERT/EJECT CHECK PORT. P_FWDIN P1B0/ADC0 TAPE FWD/RVS PLAY INPUT PORT. REVERSE: HIGH, FORWARD: LOW P_FFIN P1D0 TAPE PLAY/FF INPUT PORT.

  • Page 13: Ic Block Diagram & Terminal Voltage

    6. IC BLOCK DIAGRAM & TERMINAL VOLTAGE IC 301 (LA3161) PIN NO. PIN NAME DESCRIPTION VOLTAGE INPUT R-CH INPUT 1.3V N. FEED BACK 0.7V OUTPUT R-CH OUTPUT 2.9V 10.5V GROUND OUTPUT L-CH OUTPUT 2.9V N. FEED BACK 0.7V INPUT L-CH INPUT 1.3V...
  • Page 14 IC 302 (HA12135AF) PIN NO. PIN NAME DESCRIPTION VOLTAGE 1, 16 REC IN RECODING INPUT 5.5V POWER 3, 14 PB IN PLAYBACK INPUT 5.5V Vref BEEFERENCE VOLTAGE 5.3V NR ON/OFF NR ON/OFF MODE CONTROL 4.6V/0.4V 6, 11 PB OUT PLAYBACK OUTPUT 5.4V 7, 10 Time constant pin for the level detector...
  • Page 15 IC 303 (LC75372E) PIN NO. PIN NAME VOLTAGE PIN NO. PIN NAME VOLTAGE 1, 33 L/R T3 4.3V 12, 22 L2/R2 4.3V 2, 32 L/R T2 4.3V 13, 21 L1/R1 4.3V 3, 31 L/R T1 4.3V 4, 30 L/R IN 4.3V 5, 29 L/R 10dB OUT...
  • Page 16 IC 304 (HA13158) N o t e : 1. Standby Power is turned on when a signal of 3.5 V or 0.05 mA is impressed at pin 2. When pin 2 is open or connected to GND, standby is tumed on (output off). 2.

  • Page 17: Pcb Pattern Diagram

    7. PCB PATTERN DIAGRAM 7-1. PCB MAIN (PA RT’S SIDE, TO P ) 7-2. PCB FRONT (PA RT'S SIDE, TO P )
  • Page 18 7-3. PCB FRONT (PA RT'S SIDE, BOT TO M )

  • Page 19: Overall Exploded View & Parts List

    8. OVERALL EXPLODED VIEW & PARTS LIST...

  • Page 21: Electrical Parts List

    9. ELECTRICAL PARTS LIST 9-1. ASSY MAIN PCB L O C AT I O N C O D E D E S C R I P T I O N R E M A R K C E 3 4 2 , 3 4 3 C C X E 1 C 3 3 2 E S D 1 6 V 3 3 0 0 U F C N 3 0 1...
  • Page 22 L O C AT I O N C O D E D E S C R I P T I O N R E M A R K CC111, 326, 117, 327 C C K F 1 E 2 2 3 E HIKF 25V 0.022µF Z CC107, 116, 104, 325 CC115, 308...
  • Page 23 9-2. ASSY FRONT PCB L O C AT I O N C O D E D E S C R I P T I O N R E M A R K D L 5 0 1 ~ 5 1 2 D S M L 2 1 0 M T- S M L - 2 1 0 M T D L 5 1 3...

  • Page 24: Circuit Diagram

    10. CIRCUIT DIAGRAM...
  • Page 26 DA E WOO ELECTRONICS CO., LT D. 686, AHYEON-DONG MAPO-GU SEOUL, KOREA C.P.O. BOX 8003 SEOUL, KOREA TELEX: DWELEC K28177-8 CABLE: “DAEWOOELEC” FAX: 02) 360-8184 TEL: 02) 360-8182/8178~9 http://www.dwe.daewoo.co.kr S/M NO. : 97T9515600 PRINTED DATE: May 1999...

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Akf-8847

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