Teac-TR-670-Service-Manual电路原理图.pdf

T T- -R R6 67 70 0 SERVICE MANUAL AM / FM Stereo Tuner Effective : April, 2002S-0056A CONTENTS 1 SPECIFICATIONS 2 2 ADJUSTMENTS AND CHECKS 3 3 EXPLODED VIEWS AND PARTS LIST 6 4 PC BOARDS AND PARTS LIST 8 NOTES PC boards shown are viewed from parts side. The parts with no reference number or no parts number in the exploded views are not supplied. As regards the resistors and capacitors, refer to the circuit diagrams contained in this manual. Parts marked with this sign are safety critical components. They must be replaced with identical components - refer to the appropriate parts list and ensure exact replacement. RadioFans.CN 收音机爱 好者资料库 1 SPECIFICATIONS 2 FM Tuner Section (Without notes 98 MHz, 65 dBf) Tuning Range: 87.5 MHz 108.0 MHz (100 kHz steps) Usable Sensitivity (IHF): Mono: 11.2 dBf 50 dB Quieting Sensitivity: Mono: 15 dBf Stereo: 20 dBf Total Harmonic Distortion (1 kHz): Mono: 0.4% Stereo: 0.5% Frequency Response: 30 Hz 15 kHz, +1/ 1.5 dB Stereo Separation (1 kHz): 40 dB Signal-to-Noise Ratio: Mono: 72 dB Stereo: 70 dB AM Tuner Section Tuning Range: 530 kHz 1,720 kHz (10 kHz steps) Usable Sensitivity: 55 dB/m Total Harmonic Distortion: 0.8% at 85 dB/m Signal-to-Noise Ratio: 45 dB at 85 dB/m General Power Requirements: 120/230 V AC, 50-60 Hz Power Consumption: 8 W Dimensions (W x H x D): 435 x 102 x 270 mm Weight (net): 3.6kg Standard Accessories: AM Loop Antenna x 1 FM T-type Antenna x 1 Matching Transformer x 1 Remote Control Unit (RC-789) x 1 Improvements may result in specifications and features changing without notice. Voltage Conversion (General export models only) Be sure to remove the power cord from the AC outlet before repositioning the voltage converter switch. 1. Locate the voltage selector on the rear panel. 2. Using a flat-bladed screwdriver, set to the appropriate 230V or 120V position according to your area. IN NORTH AMERICA USE ONLY ON 120 V SUPPLY. RadioFans.CN 收音机爱 好者资料库 2 ADJUSTMENTS AND CHECKS 3 ALIGNMENT INSTRUCTIONS EQUIPMENT NEEDED: AM Signal Generator FM Signal Generator Oscilloscope VTVM(AC, DC) Test loop antenna (AW Adjustment) Dummy antenna (FM Adjustment) Stereo signal modulator Frequency counter Distortion analyser IMPORTANT 1. Check power-source voltage. 2. Set the function switch to band aligned. 3. Keep the signal input as low as possible to adjust accurately. 4. Modulation and modulation frequency. Item ModulationModulation frequency Band AM30%400Hz FM100%(75KHz Dev.)400Hz ADJUSTMENT POINT MAIN PCB T2 T3-2 T4 T5 TVR5 TVR4 TVR2 TVR1 TVR3 T1 TVC1 TVC2 TP1 L2 RF1 P5 P6 T1 T3-1 4 1.AM TRACKING VOLTAGE ADJUSTMENTS DC VOLTMETER. CONNECT TO TEST POINT P5 and GND NO.BandFrequencyAdjust forAdjustment 1AM530KHz2.2VT1 2AM1720KHz9.5VTVC1 2.AM RF ADJUSTMENT Signal Generator. Connects to the AM ANT. Coil through the loop antenna. Adjust for the indication of VTVM of the wave form of scope to be maximum. BANDStepFrequencyAdjust forAdjustment 1630KHzMaximum sensitivityL2, T2 21420KHzMaximum sensitivityTVC2 3Repeat steps 1 and 2 several times. AM NO.FrequencyAdjust forAdjustment 197.8MHzL rejectionT4 2 P5 GND 397.8MHz 97.8MHz TVR3 T5 L, R rejection R rejection 3.FM 19kHz REJECTION ADJUSTMENT 5 4.FM MONO DISTORTION ADJUSTMENT DC VOLT METER.Connect to TP1(-), TP1(+) Through the choke coll (100 H) Signal Generator.Connect to FM ANT Jack (FM IN) through the dummy. Distortion Meter.Connect to the output. NO.FrequencyAdjust forAdjustment 197.8MHzDC Voltmeter 0VT3-1 297.8MHzMinimum T.H.DT3-2 3 5.FM/AM AUTO STOP LEVEL ADJUSTMENT FM SIGNAL GENERATOR .Connect to FM ANT Jack (FM IN) through the dummy AM SIGNAL GENERATOR.Connect to AM ANT, Coil through the Loop antenna BANDSTEPSIGNAL GENERATORAdjust forAdjustment 197.8MHz 16dBDisplay ONTVR1 1630KHz 74dBDisplay ONTVR2AM FMTUNED TUNED 4Repeat steps 1 and 2 Several times. 97.8MHzMinimum T.H.DT1 TP1(-) TP1(+) NO.FrequencyAdjust forAdjustment 197.8MHzL separationTVR5 297.8MHzTVR4R separation 6.FM SEPARATION ADJUSTMENT 6 2 4 5 6 12 13 17 16 15 14 21 20 19 18 23 22 3 7 8 9 10 11 1 3 EXPLODED VIEWS AND PARTS LIST 7 EXPLODED VIEW LIST REF.NO.PARTS NO.DESCRIPTIONREMARKS 1 9A09229700FACE PLATE 75L837W0248* 2 9A09230500WASHER,POWER KNOB 85A637* 3 9A09231000WASHER 85A638* 4 9A09230400POWER KNOB 80KB431* 5 9A09230300ACRY 85A398* 6 9A09230600PUSH KNOB 80KB432* 7 9A09230200ACRY 85A636* 8 9A09230700PUSH KNOB 80KB433* 9 9A09230800PUSH KNOB 80KB434* 10 9A09230900PUSH KNOB 80KB435* 11 9A09229800SUB PLATE 78C266000000 12 9A09233400KEY PCB ASSY TR670B3851* 13 9A09231200FEET 81AD287* 14 9A09230000BOTTOM PLATE 78C266200000 15 9A09231700BRACKER,U-TYPE 78C206000000 16 9A09233500TRANSFORMER PCB ASSY TR670B3852* 17 9A09230100UPPER COVER 78C266300000 18 9A09233300MAIN PCB ASSY TR670B3850* 19 9A09233600SELECT SW PCB ASSY TR670B3853* 20 9A09231500BUSHING 98BSB4F4* 21 9A09231400AC CORD 651B2U56B24P 22 9A09231300HOLER,ANT 85A271* 23 9A09229900REAR PLATE 78C2661W0245 F1,F2 9A09231900FUSE 0.5A/250V T 265200P521TQ F3 9A09232000FUSE 0.1A/250V T 265200P121TQ INCLUDED ACCESSORIES REF.NO.PARTS NO.DESCRIPTIONREMARKS 9A08814500OWNERS MNL,E/F 9904TR670* 9A09234200REMOTE CONTROL UNIT 62CR19C10001 9A09234300BATTERY 250027* 9A09233800LOOP ANT 64LA75* 9A09233900TV DIPOLE ANT 64T0001* 9A09234000ANT ADAPTER 68AJ20092046 8 KEY PCB MAIN PCBTRANSFORMER PCBSELECT SW PCB 4 PC BOARDS AND PARTS LIST MAIN PCB ASSY REF.NO.PARTS NO.DESCRIPTION 9A09233300MAIN PCB ASSY 9A09245200PCB,B3850/B3852/B3853 C95 9A09241800C,ELEC 2200UF/25V C97 9A09240000C,ELEC 100UF/100V C98 9A09240300C,ELEC 47UF/63V NP D1-D4 9A09237300DIODE,1N4148 D5 9A09237500ZENER DIODE,5.6V 0.5W D6 9A09237600ZENER DIODE,22V 0.5W D7-D10 9A09237400DIODE,1N4007 F1-F3 9A09241200FUSE HOLDER J1 9A09244500RCA JACK,HSP-242V1-3 J2 9A09245000WAFER,5045-7P J3 9A09245100WAFER,5045-8P J4 9A09244900WAFER,5045-6P J8 9A09244800WAFER,5045-2P JP1 9A09242500ANT TERMINAL L1 9A09242600CHOKE,2.2UH L2 9A09242800I.F.T,LA-003 P2 9A09244600TERMINAL GND P5,P6 9A09244700PIN Q1,Q2 9A09240500TR,2SC1815BL Q3 9A09240600TR,2SA1015 Q4 9A09240500TR,2SC1815BL Q5 9A09241600TR,2SK192A Q6-Q8 9A09240500TR,2SC1815BL Q10 9A09240500TR,2SC1815BL Q12,Q13 9A09240700TR,2SC3327A Q14 9A09240500TR,2SC1815BL Q15 9A09240600TR,2SA1015 Q16,Q17 9A09240700TR,2SC3327A Q19 9A09240500TR,2SC1815BL Q20 9A09242700TR,2SB633 Q21,Q22 9A09240500TR,2SC1815BL Q23 9A09240800TR,2SA965 R35 9A09241500NTC THERMISTORS,300 OHM R41 9A09241300R,M.O.F 2W 100 R82 9A09241300R,M.O.F 2W 100 R90 9A09241400R,M.O.F 1W 4K7 RF1 9A09243300FM TUNER,TFFJ4E570A T1 9A09242900I.F.T,LO-O03 T2 9A09243000I.F.T,A-8B C02-8072 T3 9A09243100I.F.T,0203-W009 T4,T5 9A09243200I.F.T,10DF01 TP1 9A09244400PIN,2541-2P TSW(SW2) 9A09243400TACT SW,SFKHHLU1714 TVC1,TVC2 9A09243500TRIMMER,CTY-112B 8P TVR1 9A09241000TVR,6 H-TYPE 30K TVR2 9A09240900TVR,6 H-TYPE 10K TVR3 9A09241000TVR,6 H-TYPE 30K TVR4,TVR5 9A09241100TVR,6 H-TYPE 1M U1 9A09241900IC,AN278 U2 9A09242000IC,LA1266 U3 9A09242100IC,LA3450 U4 9A09242200IC,TC9257P U5,U7 9A09242300IC,AN7805 MAIN PCB ASSY REF.NO.PARTS NO.DESCRIPTION U8 9A09242400IC,AN7812 U8 9A09244300HEAT SINK VD1,VD2 9A09243600VARICAP,1SV149 X1 9A09243700CRYSTAL,7.2MHZ Z1 9A09243800CERAMIC FILTER,SFZ10.7MS2 Z2 9A09243900CERAMIC FILTER,SFZ10.7MS3 Z3 9A09244000CERAMIC FILTER,SFZ450B Z4 9A09244200CERAMIC FILTER,BFU450CN Z5 9A09244100CERAMIC FILTER,CSB456F11 KEY PCB ASSY REF.NO.PARTS NO.DESCRIPTION 9A09233400KEY PCB ASSY 9A09248000PCB,B3851 9A09247200FL TUBE,25U39167TAN D1 9A09237300DIODE,1N4148 IR1 9A09247100INFERRED RECEIVER,IR-9G J1 TO J2 9A09247800CONNECTOR,ED-491 7P J2 TO J3 9A09247700CONNECTOR,ED-E67 8P J3 TO J8 9A09247600CONNECTOR,ED-C92 2P Q1 9A09240600TR,2SA1015 R1 9A09246700R,NETWORKS 10KX7 8P7R R2 9A09246800R,NETWORKS 10KX4 5P4R R9 9A09246600R,NETWORKS 10KX6 7P6R R10 9A09246700R,NETWORKS 10KX7 8P7R SW1-SW8 9A09247000TACT SW,SKHVBK3710 SW10-SW23 9A09247000TACT SW,SKHVBK3710 U2 9A09246500IC,TMP87PM78F U3 9A09246300IC,TC74HCU04 U4 9A09246900IC,93C66 U5 9A09246400IC,JRC6356E X1 9A09247400CRYSTAL,8MHZ X2 9A09247500CRYSTAL,32.768KHZ TRANSFORMER PCB ASSY REF.NO.PARTS NO.DESCRIPTION 9A09233500TRANSFORMER PCB ASSY 9A09245200PCB,B3850/B3852/B3853 J5 TO J4 9A09245600CONNECTOR,ED-488 6P J7 9A09245300WAFER,3963-5P3T J9 9A09245400WAFER,3963-3P2T T6 9A09245500TRANSFORMER SELECT SW PCB ASSY REF.NO.PARTS NO.DESCRIPTION 9A09233600SELECT SW PCB ASSY 9A09245200PCB,B3850/B3852/B3853 9A09245700SLIDE SW,S14-22AH 9A09245800CONNECTOR,ED-E69 5P3T 9 86745231 E D C B A SCHEMATIC DIAGRAMT-R670MAIN PCB, TRANSFORMER PCB, SELECT SW PCB AM/FM Stereo Tuner T T- -R R6 67 70 0 1 st Issue; October 2001 INSTRUCTIONS FOR SERVICE PERSONNEL BEFORE RETURNING APPLIANCE TO THE CUSTOMER, MAKE LEAKAGE- CURRENT OR RESISTANCE MEASUREMENTS TO DETERMINE THAT EXPOSED PARTS ARE ACCEPTABLY INSULATED FROM THE SUPPLY CIRCUIT. 86745231 E D C B A SCHEMATIC DIAGRAMT-R670KEY PCB AM/FM Stereo Tuner T T- -R R6 67 70 0 1 st Issue; October 2001