Daewoo AKF-0305 Series Service Manual

Text of Daewoo AKF-0305 Series User Guide:

• Daewoo AKF-0305 Series, 1 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 Frequency response : 100Hz( + 3dB), 10kHz(-5 + 3dB) Control Bass/Treble : 10 + 3dB at 100Hz/10kHz TAPE SECTION Track format : 2-track / 2-channel system Tape speed : 4.8cm/sec Wow / Flutter : 0.35%max. (WRMS) Frequency response normal (LH)tape : 63Hz to 10kHz TUNER SECTION (FM) Tuning range : 87.5 to 108MHz 87.5 to 107.9 at U.S.A Usable Sensitivity(MONO) : 12dBuV(4 uV / 75ohms) Signal to noise ratio (at 60dBu) : More than 50dB (MW) Tu

• Daewoo AKF-0305 Series, 7 EMERGENCY TROUBLE SHOOT 3-3. Tape Function No sound from speakers Yes No Yes Tape is inferior goods No signal play output Use only superior goods Put exactly deck output connector in. Yes No Deck Mechanism is inferior goods. Change Deck Mechanism to superior goods. Yes A A Sound is low or not clear Yes Yes Head is dirty Ref. Point Clean head or pinch roller with cleaner Tape is not inserted into the slot. Some program is played back repeatedly Yes No Yes Tape was inserted right side left. Tape is ejected after being ins

• 13. OUTPUT CONNECTOR DESCRIPTIONS 48 OUTPUT CONNECTORS 13PIN CONNECTOR 8PIN CONNECTOR 26PIN ISO CONNECTOR 18PIN CONNECTOR 1 REAR LEFT SP(-) REAR RIGHT SP(+) NEGATIVE GROUND RIGHT (ILLUMINATION) BATTERY B+(BACK-UP) FRONT RIGHT SP(-) FRONT LEFT SP(-) REAR RIGHT SP(-) AUTO ANT ACC B(+)POWER FRONT RIGHT SP(+) FRONT LEFT SP(+) REAR LEFT SP(+) 8 9 10 11 12 13 2 3 4 5 6 7 1 CDC-ON BA

• Daewoo AKF-0305 Series, 27 DECK MECHANISM EXPLODED VIEW & PARTS LIST 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 C

• Daewoo AKF-0305 Series, PARTS LIST 29 DESCRIPTION TR KTC3205Y (2236Y) TR KTA-105M TR DTC323TSA SPT TR KRA 101M AUTO (2201) TR 2SB1240R TR KTA1273Y (966Y) TR KTA1267Y TAPPING PART NO. TZTC3205Y- Ref DESCRIPTIONPART NO. Ref Q104 TZRA105M-- Q105, Q107 TZDTC323TS Q110, Q111, Q313 Q316, A317 TZRA101M-- Q301 TZ2SB1240R Q303 TZTA1273Y- TZTA1267Y- Q306, Q315 Q310 IC DRIVER LC75854E QIP64E, with RDS Version1LC75854E- IC501 LC75852, W/O RDS Version1LC75852-- LCD TTD-1464UPTDPN with RDS Version97T0L1160P LCD TTD-1869UPTDPN, W/O RDS Version97T0L1320P PL01 ~ PL05 LAMP PILOT 8V 60MA D3. 2 0. 08 SW TAC

• 8 EMERGENCY TROUBLE SHOOT 3-4. CDC Function Disc is not inserted. Yes No Yes Discs are fold in magazine slot. Magazine is not inserted rightly Put one disc in magazine slot. Insert exactly magazine Yes Inside degree of the unit is extreme Turn power off and stop operation for about 1 hour No Yes A Selection time is longer than unusually Yes Selected PAUSE function

• Daewoo AKF-0305 Series, 36 FUNCTION OF MICOM IC 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

• Daewoo AKF-0305 Series, 32 FUNCTION OF MICOM IC PIN 59 52 53 54 55 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. INPUT DATUM FROM THE RDS DEMODULATOR IC THE TIMING CHART OF DATA IS ILLUSTRATED ON BACK PAGES. KEY & LCD DRIVER IC INTERFACE PORTS EVR IC INTERFACE PORTS. OPTION DIODE MATRIX INPUT. OPTION DIODE MATRIX OUTPUT. RDS DATA MEMORY EEPROM CONTROL PORT. MULTI-PATH INPUT PORT. * INPUT RANGE : 0.6~0.9V LCD BACK-LIGHTING COLOR CONTROL PORT RESET : COLOR --- > LOW TWO KEY IN : COLOR CHANGE DECK EQ IC MUTE ADJUST PORT. PK3 PK2 INT1 PE3/SI2 PE2/SO2 PE1/SCK2 PE0 PC1 PO0 PO2 PO1 PA3 PA2 PA1 PA0 PB3 PB2 PB1 PB0 PF3

• Daewoo AKF-0305 Series, 35 FUNCTION OF MICOM IC 10-4. PIN DESCRIPTION PIN 1 80 78 71 76 73 31 75 74 72 70 69 68 67 79 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=0.0

• Daewoo AKF-0305 Series, 9-1. MAIN SECTION 28 DESCRIPTION 1SAA6579T- IC101 IC DRIVER LB16411LB1641--- IC301 IC ISOLATION BA-3121 (When it is CD Changer)1BA3121--- IC302 1LC75372E- IC304 IC AUDIO POWER HA13158A1HA13158A- IC305 IC REGULATOR KIA 7808P TO-220AB1K1A7808P- IC306 IC CHIP CUSTOM LC72366-9433, W/RDS Version LC72362-9443, W/O RDS Version 1LC72366-- 1LC72362-- IC401 IC CHIP EEPROM 24LC16B-1/SN124LC16BSQ IC402 IC REGULATOR KIA78S05P AUTO1Z1A78S05P IC403 JACK ANT ANT. J-020-03 97T6366900 J101 LED LT6311-S4 RED WITH HOLDERDLT6311S4- LD101 COIL

• Daewoo AKF-0305 Series, 47 LIQUID CRYSTAL DISPLAY 12-2. BASIC ONLY 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 7A 7F 7G 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 AM

• Daewoo AKF-0305 Series, ADJUSTMENTS 4-5. TAPE ADJUSTMENT METHOD 13 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. Note : dBu uV dBu 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-114N or equivalent MTT

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

• Daewoo AKF-0305 Series, 37 FUNCTION OF MICOM IC KEY MATRIX TABLE 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 DIODE MATRIX DESCRIPTIONS SOURCE RETURN ODR 3 (PA3, 27PIN) DOUBLE 2 (D405) --- ODST 3 (PB3, 23PIN) ODST 2 (PB2, 24PIN) ODST 1 (PB1, 25PIN) ODST 0 (PB0, 26PIN) --- --- TUNER 1,2 (D409) AREA 2 (D410) --- LW ENABLE (D411) --- AREA 3 (D413) --- CDC/AUX IN (D414) DOUBL

• ADJUSTMENTS 4-3. AM (MW/LW) ADJUSTMENT METHOD 11 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.7 Adjust AM RF1 and AM RF2 for maximum o

• Daewoo AKF-0305 Series, 33 FUNCTION OF MICOM IC KEY MATRIX TABLE 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) KEY MATRIX TABLE DIODE MATRIX DESCRIPTIONS SOURCE RETURN ODR 3 (PA3, 27PIN) DOUBLE 2 (D405) --- ODST 3 (PB3, 23PIN) ODST 2 (PB2, 24PIN) ODST 1 (PB1, 25PIN) ODST 0 (PB0, 26PIN) --- LOUD/LOC (D408) TUNER 1,2 (D409) AREA 2 (D410) --- LW ENABLE (D411) --- AREA 3 (D413) --- C

• Daewoo AKF-0305 Series, ADJUSTMENTS 4-4. FM ADJUSTMENT METHOD 12 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.7 Adjust RV 108 Page7. Tuner PC Board for2.7V=20mV at TP102(IC401 pin 66) Adjust MPX SEP Fig.7 for maximum separation Left and Right ch. Adjust Stereo Blend Fig.7 1dB separation between Left and Right ch. Stereo Separation SNC 4 5 6 DESCRIPTION CONNECTION ANTENNA SIGNAL DIAL CONTROL ADJUSTM

• 46 12. LIQUID CRYSTAL DISPLAY 12-1. RDS ONLY 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. COM

• Daewoo AKF-0305 Series, 31 FUNCTION OF MICOM IC 10-2. PIN DESCRIPTION PIN 1 80 78 77 71 76 73 31 75 74 72 70 69 68 67 79 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

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