Daewoo AKF-8846, Service Manual

Page 1: ...Service Manual CAR AUDIO Model AKF 8846 8847 DAEWOO ELECTRONICS CO LT D ...

Page 2: ...13 PANEL INFORMATION 3 4 14 ELECTRICAL SPECIFICATION 5 7 15 MICOM PIN CONFIGULATION DESCRIPTIONS 8 10 16 IC BLOCK DIAGRAM TERMINAL VOLTAGE 11 14 17 PCB PATTERN DIAGRAM 15 16 18 OVERALL EXPLODED VIEW PARTS LIST 17 19 ELECTRICAL PARTS LIST 18 20 10 CIRCUIT DIAGRAM 21 ...

Page 3: ... MW S N 20dB 17µV 17µV LW S N 20dB _ 22µV S N RATIO FM 55dB 55dB MW 50dB 50dB LW _ 45dB STEREO SEPARATION FM 30dB 30dB SIZE 178 W x 52 H x155 D 178 W x 52 H x155 D WEIGHT 1 6Kg 1 5Kg NET CONSUPTION CURRENT 10A 10A TAPE SPEED 4 7cm sec 4 7cm sec WOW FLUTTER UNDER 0 35 RMS UNDER 0 35 RMS S N RATIO 50dB 50dB CROSS TALK 40dB 40dB CHARACTERISTICS DESCRIPTION AUTO REVERSE DECK ELECTRONIC TUNING AUTO MEM...

Page 4: ...HT SP 3 ILL DIM B 4 ACC B 5 BACK UP B 6 7 REAR LEFT SP 8 FRONT LEFT SP 9 FRONT RIGHT SP 10 REAR RIGHT SP 11 ILL CONTROL VOLT V GND 12 AUTO ANT B 13 14 NEGATIVE GROUND 15 16 17 REAR LEFT SP 18 FRONT LEFT SP FRONT SIDE ANT JACK 18PIN I O CONNECTOR HEAT SINK ...

Page 5: ...BUTTONS NO 1 6 SECURITY WARNING LED OPTION FAST FORWARD REWIND PROGRAM BUTTONS Program SCAN AUTO STORE SELECT BUTTON L C D TAPE SLOT FM STEREO ON INDICATOR LOW BROADCASTING INDICATOR PRESET BUTTON NUMBER METAL TAPE SELECT INDICATOR SCAN SELECT INDICATOR DOLBY SELECT INDICATOR FM AM BAND INDICATOR RADIO FREQUENCY TAPE PLAY INDICATOR AST SELECT INDICATOR VOL BASS TREBLE FADER B ALANCE SELECT INDICAT...

Page 6: ...G INDICATOR PRESET BUTTON NUMBER METAL TAPE SELECT INDICATOR SCAN SELECT INDICATOR DOLBY SELECT INDICATOR FM MW LW BAND INDICATOR RADIO FREQUENCY TAPE PLAY INDICATOR AST SELECT INDICATOR VOL BASS TREBLE FADER B ALANCE SELECT INDICATOR TAPE DIRECTION INDICATOR ...

Page 7: ...0 3 IF REJECTION RATIO 90 1 MHz dBµ 80 65 4 MUTING SENSITIVITY 981 MHz dBµ 7 3 15 60 dBu Ref 3dB 5 FREQUENCY RESPONCE 100 dB 0 3 75 uS P EMP 10K dB 10 3 6 T H D 98 1 MHz 1KHz 0 3 1 0 22 5 KHz DEV 7 AM REJECTION AM 30 60dBu dB 50 40 8 SEARCH LOCK SENS 98 1 MHz dBµ 20 10 30 9 STEREO ON SENSITIVITY 98 1 MHz dBµ 7 3 15 1K 40dBµ dB 6 12 10 CHANNEL SEPARATION 1K 60dBµ 30 25 10K 60dBµ 20 25 DUMMY CONDITI...

Page 8: ... dB 60 50 6 AGC F O M 999 KHz dB 58 50 7 AUDIO FIDELITY LOW Hz 60 130 6dB HI KHz 1 7 1 2 8 T H D 999 KHz 400 Hz 0 5 1 5 30 MOD 9 WHISTLE MODULATION 21F 1 0 3 0 10 MW SEARCH LOCK SENS 999 KHz dBu 35 25 45 11 CHANEL BANDWIDTH 999 KHz KHz 9 5 13 12 LW FREQUENCY TUNNING RANGE KHz 144 290 144 290 USABLE SENSY 160KHz 30 40 13 20dB S N 210 KHz dBu 30 40 260 KHz 30 40 14 S N RATIO 210 KHz dB 52 40 15 T H ...

Page 9: ...RESPONCE 125Hz dB 0 3 Ref 1KHz 8kHz dB 0 2 8 NOISE LEVEL VR MIN mV 1 3 9 OUTPUT POWER 10 THD FM DEV 75KHz 1KHz W 18 16 10 OUTPUT POWER MAX FM DEV 75KHz 1KHz W 20 17 11 BALANCE CONTROL EFFECT FM DEV 22 5KHz 1KHz dB 60 20 12 FADER CONTROL EFFECT FM DEV 22 5KHz 1KHz dB 60 35 13 TONE CONTROL EFFECT BASS 100Hz dB 9 10 3 TREBLE 10KHz dB 9 10 3 14 CHANNEL BALANCE FM DEV 22 5KHz 1KHz dB 0 3 L R MTT 118 1K...

Page 10: ...8 5 MICOM PIN CONFIGURATION DESCRIPTIONS 5 1 PIN CONFIGURATIONS IC305 ...

Page 11: ... OUTPLIT PORT GND VDD 5V FM OSC INPUT PORT RANGE 0 07 1 5Vrms AM OSC INPUT PORT RANGE 0 07 1 5Vrms FM IF COUNT INPUT PORT RANGE 10 7MHz 30KHz Vpp 0 07 1 5Vrms AM IF COUNT INPUT PORT RANGE MW 450KHz 1KHz AM LW 450KHz 0 37KHz Vpp 0 07 1 5Vrms BACK UP MODE CONTROL PORT HIGH INPUT OPERATION LOW INPUT BACK UP MODE IF REQUEST PORT POWER MUTE PORT ACTIVE HIGH AUDIO MUTE PORT ACTIVE HIGH BEEP OUTPUT PORT ...

Page 12: ...CD6 KS6 O 50 P_SOUT7 LCD7 KS7 O 49 P_SOUT8 LCD8 KS8 O 48 P_SOUT9 LCD9 KS9 O 47 P_SOUT10 LCD10 KS10 O 46 P_SOUT11 LCD11 KS11 O 45 P_SOUT12 LCD12 KS12 O 44 P_SOUT13 LCD13 KS13 O 43 P_SOUT14 LCD14 KS14 O 42 P_SOUT15 LCD15 KS15 O 41 P_SOUT16 LCD16 P2E0 O 40 P_SOUT17 LCD17 P2F0 O 39 P_SOUT18 LCD18 P2G0 O 38 P_SOUT19 LCD19 P2H0 O 64 INT I DESCRIPTION WARNING LED OUT PORT ON OFF TIME 1SEC TAPE INSERT EJE...

Page 13: ...IC 301 LA3161 PIN NO PIN NAME DESCRIPTION I O VOLTAGE 1 INPUT R CH INPUT O 1 3V 2 N F N FEED BACK 0 7V 3 OUTPUT R CH OUTPUT O 2 9V 4 VCC VCC I 10 5V 5 GND GROUND 0V 6 OUTPUT L CH OUTPUT O 2 9V 7 N F N FEED BACK 0 7V 8 INPUT L CH INPUT I 1 3V ...

Page 14: ...V 4 Vref BEEFERENCE VOLTAGE 5 3V 5 NR ON OFF NR ON OFF MODE CONTROL I 4 6V 0 4V 6 11 PB OUT PLAYBACK OUTPUT O 5 4V 7 10 DET Time constant pin for the level detector 1 2V 8 9 REC OUTPUT RECORDING OUTPUT 5 5V 12 REC PB REC PB CONTROL PORT 0 4V PB PLAYBACK œ ÊøÏ LOW 13 BIAS Reference current input pin for the active filters 0 9V 15 GND GROUND 0V ...

Page 15: ... L R CT2 4 3V 7 27 L R CT1 0 3V 8 26 L R 10dB IN 4 3V 9 25 L R SELO 4 3V 10 24 L3 R3 4 3V 11 23 N C 0 36 42 L R FOUT 4 3V 37 41 L R ROUT 4 3V PIN NO PIN NAME VOLTAGE 12 22 L2 R2 4 3V 13 21 L1 R1 4 3V 14 VDD 9V 15 CE 0V 16 DI 0V 17 CL 0V 18 N C 0V 19 VSS 0V 20 TEST 0 5V 34 44 L R OUT 4 3V 35 43 L R FIN 4 3V 38 40 L R Vref 4 3V 39 Vref 4 3V ...

Page 16: ...0 3 5 FL OUT 6 5V 7 9 RL OUT 6 5V 15 17 RR OUT 6 5V 19 21 FR OUT 6 5V Note 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 Muting Muting is turned off ourput on when a signal of 3 5 V or 0 2 mA is impressed at pin 10 When pin 10 is open or connected to GND muting is turned on output off ...

Page 17: ...15 7 PCB PATTERN DIAGRAM 7 1 PCB MAIN PART S SIDE TOP 7 2 PCB FRONT PART S SIDE TOP ...

Page 18: ...16 7 3 PCB FRONT PART S SIDE BOTTOM ...

Page 19: ...8 OVERALL EXPLODED VIEW PARTS LIST ...

Page 20: ......

Page 21: ...97X330XT1 6 2 Q308 TZ2SB1240R 2SB1240R Q105 TZTA1267Y KTA1267Y Q101 102 305 306 TZTC3199Y KTC3199Y Q104 313 TZ2SD1862R 2SD1862R Q311 TZRA106M KRA106M Q310 312 TZRC102M KRC102M Q103 1106 307 309 TZRC106M KRC106M Q301 302 107 TZRC110M KRC110M Q103 TZRC106M KRC106M AKF 8847 CE331 332 333 334 CEAP1H108A 0 1 50 CE110 353 CEXP1C471A 470 16 CE107 301 302 305 306 101 102 103 CEAP1H109A 1 50 CE307 308 311 ...

Page 22: ...B1H471K HIKB 50V 470PF K CM301 302 307 308 CMXK1H333J 50V 0 033µF J CM101 102 CMXK1H472J 50V 0 0047µF J CM309 310 311 CMXV1H104J 50V 0 1µF J CM305 306 CMXK1H222J 50V 0 0022µF J CM303 304 CMXK1H683J 50V 0 068µF J D301 317 322 324 DKSS133 1SS 133 DZ101 301 DKTZ10B MTZ 10V DZ302 303 DKTZ6R2B MTZ 6 2V DZ304 306 DKTZ9R1B MTZ 9 1V DZ305 DKTZ5R1B MTZ 5 1V DZ307 DKTZ8R2B MTZ 8 2V LL101 102 5LL568K02K 0 56...

Page 23: ...2VR SLC 22VR SECURITY PL501 505 97T82L2WE6 14V 60mA D3 0 0 2C PL501 512 5S50101Z02 1C1P SKQC10918B D501 502 503 DKSS133 1SS133 VR501 5S52650AL3 RV 16086 LD501 97T0L1420P 72X24 5 KXN312917 W501 502 97T8851800 FFC 20P 45mm LOCATION CODE DESCRIPTION REMARK CN302 97T8857200 E5P20 H 100 DK010 97T6009700 TN 705DH 136 ...

Page 24: ...10 CIRCUIT DIAGRAM ...

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Page 26: ...ICS CO LTD 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 PRINTED DATE May 1999 S M NO 97T9515600 ...