Teac-AG790-rec-sm 维修电路原理图.pdf

A AG G- -7 79 90 0SERVICE MANUALAM/FM Stereo ReceiverEffective : April, 2003S-0092ANOTESPC boards shown are viewed from parts side.The parts with no reference number or no parts number in theexploded views are not supplied.As regards the resistors and capacitors, refer to the circuit diagramscontained in this manual.Parts marked with this sign are safety critical components. Theymust be replaced with identical components - refer to the appropriateparts list and ensure exact replacement.CONTENTS1 SPECIFICATIONS 22 ADJUSTMENTS AND CHECKS 33 EXPLODED VIEWS AND PARTS LIST 64 PC BOARDS AND PARTS LIST 8RadioFans.CN 收音机爱 好者资料库1 SPECIFICATIONS2Amplifier SectionOutput Power.100 + 100 watts RMS (0.9 % THD, 1 kHz, 8 ohms)Total Harmonic Distortion. 0.05 % (at 70 watts,1 kHz)Input Sensitivity/Impedance . PHONO: 5 mV/22 kohmsLINE: 300 mV/22 kohmsFrequency Response . PHONO: 20 Hz20 kHz, 3 dBLINE: 20 Hz50 kHz, +1/3 dBSignal-to-Noise Ratio . PHONO: 80 dB (IHF-A)LINE: 80 dB (IHF-A)Tone Control. BASS: 10 dB at 100 HzTREBLE: 10 dB at 10 kHzLoudness Control (Volume at 40 dB Position).+9 dB at 100 Hz, +8 dB at 10 kHzFM Tuner Section(Without notes 98.1 MHz, 65 dBf)Tuning Range . 87.5 MHz108.0 MHz (100 kHz steps)Usable Sensitivity (IHF). Mono: 20 dBf50 dB Quieting Sensitivity. Mono: 39 dBf, Stereo: 46 dBfCapture Ratio . 2.8 dBImage Rejection Ratio . 20 dBAM Suppresion Ratio. 48 dBHarmonic Distortion (1 kHz). Mono: 0.4 %, Stereo: 0.5 %Frequency Response. 30 Hz15 kHz, +2/3 dBStereo Separation (1 kHz) . 35 dBSignal-to-Noise Ratio . Mono: 57 dB, Stereo: 55 dBAM Tuner SectionTuning Range. 530 kHz1,720 kHz (10 kHz steps)Usable Sensitivity . 55 dB/mTotal Harmonic Distortion . 1 % at 85 dB/mSignal-to-Noise Ratio . 48 dB at 85 dB/mGeneralPower Requirements. 120 V/230 V, 50-60 Hz Power Consumption. 180 W AC Outlets . Unswitched x 2, Total 100 W max (1 A max)Dimensions (W x H x D). 435 x 139 x 335 mm(17-1/8 x 5-1/2 x 13-3/16)Weight (net) . 9.4 kg (20-11/16 lbs)Standard Accessories . AM Loop Antenna x 1FM ”T” Type Antenna x 1Remote Control Unit x 1 Design and specifications are subject to change without notice.Voltage Conversion(General export models only)Be sure to remove the power cord from the AC outlet beforerepositioning the voltage converter switch.1. Locate the voltage selector on the rear panel.2. Using a flat-bladed screwdriver, set to the appropriate230V 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 CHECKS32-1 AMPLIFIER SECTIONBias Current Adjustment1. Turn the unit on, and set the input selector switch to CD.2. Set 7VR1 and 7VR2 to the center position.3. Connect the DC voltmeter as shown below after preheating for10 minutes, and adjust 7VR2 (Lch) so that the voltagebecomes 3.31.3mV.4. Adjust 7VR1 (Rch) in the same way.7VR17VR27R467R440.33/5W0.33/5WDC voltmeter7R457R430.33/5W0.33/5WDC voltmeterMAIN PCB4ITEMSETTINGADJUSTMENTPOINTSADJUST2. AM Sensitivity600 kHz/1500 kHz50 dB/m400 Hz (30 % Mod)REC OUTAM 600 kHz2T1 (BLK)Max.3. AM IF1000 kHz50 dB/m400 Hz (30 % Mod)REC OUTAM 1000 kHz2T3 (WHT)Max.4. FM Sensitivity90 MHz1020 dBf1 kHz (100 % Mod)REC OUTFM 90 MHz2L2 (4.5T)Max.5. FM Distortion98 MHz60 dBf1 kHz (100 % Mod)REC OUTFM 98 MHz2T4 (PINK)Min. distortion6. FM Stereo 98 MHz60 dBfStereo signal L-RREC OUTFM 98 MHz2T5, 2T6Min. distortion1. VT Adjust2R19 (VT)2J2 (GND)FM 87.5 MHz2L3 (3.5T)DC 1.00.05VINPUTOUTPUTAG-790After adjusting 2TC2, readjust 2T1 at 600 kHz.AM 1500 kHz2TC2Max.AM 1720 kHzAM 530 kHzFM 108.0 MHzCheck2T2 (RED)Check8.0VDC 1.10.05VDC 8.00.5V2-2 TUNER SECTION5AC VoltmeterFM Signal GeneratorStereo Signal GeneratorDistortion AnalyzerDEGFAC VoltmeterAM Signal GeneratorBCAM LoopAntenna60cm2T32T62T52T22T12T42L22L32TC22R192J2TUNER PCB+ DC VoltmeterA3 EXPLODED VIEWS AND PARTS LIST67EXPLODED VIEW LISTREF.NO.PARTS NO.DESCRIPTIONREMARKS1 9A09760000TONE KEY 530503500 2 9A09759900TUNING KEY 530503300 3 9A09759800FUNCTION KEY 530503400 4 9A09760200VOLUME KNOB 530503600 5 9A09759700DISPLAY LENS 510503800 6 9A09759600PANEL 510503700 7 9A09760100POWER KNOB 530503200 8 9A06602800POWER SWITCH 180222501 9 9A09760300SP KNOB 530503100 10 9A09758660SP SEL PCB ASSY 037900303 11 9A09758160HEADPHONE PCB ASSY 037900405 12 9A09755060FRONT PCB ASSY 037900105 13 9A09760700TOP COVER 520505400 14 9A09760600REAR COVER 520505300 15 9A06900600CORD BUSHING 550011700 16 9A09580200AC POWER CORD 210183011 17 9A09759060SP JACK PCB ASSY 037900605 18 9A09752260MAIN PCB ASSY 037900206 19 9A09756560POWER PCB ASSY 037900505 21 9A09760500BOTTOM COVER 520505200 22 9A09759500POWER TRANSFORMER 159642022 23 9A09760900HEAT SINK 560502200 24 9A06901200H/S BRACKET 540082800 25 9A06536400LEG(GOLD) 540082601 26 9A09581500RUBBER PAD 540503600 27 9A06536300LEG(BLACK) 540082600 36 9A06900700NAME PLATE 510104300 37 9A09757660TUNER PCB ASSY 033700305 38 9A09760800BRACKET 520505500 39 9A09591600PCB SUPPORT 550505200 40 9A09760400PCB SUPPORT 550505300 42 9A06602900AC SOCKET 26CS18401 43 9A09758500HEADPHONE JACK HOLDER 550505400 44 9A09759400VOLTAGE SWITCH 180222902 45 9A06904300GND TERMINAL,M3 320018601 46 9A09592000SILICON RUBBER,T0-3P2 322228370 INCLUDED ACCESSORIESREF.NO.PARTS NO.DESCRIPTIONREMARKS9A09551200OWNERS MANUAL,EFSP 600520225 9A09763000REMOTE CONTROL UNIT,UR-420500079000 9A06902500FM ANT 59W360100 9A06902600AM ANT 59W360200 84 PC BOARDS AND PARTS LISTMAIN PCB9SP JACK PCBSP SEL PCBHEADPHONE PCBPOWER PCBFRONT PCBTUNER PCBMAIN PCB ASSYREF.NO.PARTS NO.DESCRIPTION9A09752260MAIN PCB ASSY 9A09752300MAIN PCB 9A06896100FUSE CLIP 9A09754600RCA JACK,RCA602 9A09754700RCA JACK,RCA402 9A09754800WAFER,3P 9A09754900WAFER,5P 1C1 9A09586700C,ELEC 35V 100UF M 1C4-5 9A09586600C,ELEC 25V 2200UF M 1C12 9A09586500C,ELEC 25V 100UF M 1C14-15 9A09752500C,ELEC 70V 8200UF M 1D1-8 9A09589300DIODE,IN4004 1D9-12 9A09753100DIODE,6A10 1D13-14 9A09589500DIODE,IN4148 1D15-18 9A09589300DIODE,IN4004 1D19-22 9A09589500DIODE,IN4148 1D23 9A09589100DIODE,ZENER 24V 1W 1FU1-2 9A09753200FUSE,6.3A 250V SLOW BLOW1FU3-4 9A09753300FUSE,2A 250V SLOW BLOW1N1 9A09590800IC,L7812CV 1N2 9A09590900IC,L7912CV 1N3 9A09590700IC,L7805CV 1N4 9A09753400IC,L7809CV 3D1 9A09588800DIODE,ZENER 6V8 1/2W 3N1 9A09753500IC,TC9421 3N2 9A09590500IC,TC4066BP 3V1-2 9A09589600TR,2SC1815GR 4N1 9A09590600IC,JRC4560D 5N1 9A09590600IC,JRC4560D 7C28 9A09587100C,ELEC 63V 47UF M 7D1-4 9A09589000DIODE,ZENER 24V 1/2W 7D5-6 9A09589500DIODE,IN4148 7D7 9A09589200DIODE,ZENER 30V 1/2W 7D8 9A09589500DIODE,IN4148 7D9 9A09588900DIODE,ZENER 12V 1/2W 7L1-2 9A09591000COIL,SPRING 1.5UH7R25-28 9A06889900R,1/2W 3.3K 7R43-46 9A09753600R,CEMENT 5W R33 J 7R61-62 9A09585400R,2W 6R1 J 7R68 9A06889900R,1/2W 3.3K 7R70 9A07127500R,2W 47 FMO 7R77-78 9A09585500R,2W 10 J 7V1-4 9A09589700TR,2N5551 7V5-10 9A09589800TR,2N5401 7V11-14 9A09589700TR,2N5551 7V15-16 9A09753800TR,2SD669A 7V17-18 9A09753900TR,2SB649A 7V19-20 9A09754000TR,2SC5200-O 7V21-22 9A09754100TR,2SA1943-O 7V23-24 9A09589700TR,2N5551 7V25 9A09589800TR,2N5401 7V26-29 9A09590100TR,2SC8050D 7VR1-2 9A09585700VR,SEMI-FIXED 300 J RELA-D 9A09591100RELAY,12V 5AFRONT PCB ASSYREF.NO.PARTS NO.DESCRIPTION9A09755060FRONT PCB ASSY 9A09755100FRONT PCB 9A09756400VFD DISPLAY 8D1 9A09592400DIODE,ZENER 5V1 1/2W 8D2-7 9A09589500DIODE,IN4148 8G1 9A09592800OSC,CRYSTAL 4.433M8IR1 9A09755300INFRARED RECEIVER,SM00388N1 9A09755400IC,HT48R50A-1 8N2 9A09755500IC,PT6311 8N3 9A09592600IC,HT24LC02 8V1 9A09755700TR,2SA1015GR8VR1 9A09755800ENCODER,R162EC-D1-20F-24CLED1-3 9A09755900LED,M3 RED SW1-16 9A09593100SW,TACT TUNER PCB ASSYREF.NO.PARTS NO.DESCRIPTION9A09757660TUNER PCB ASSY 9A09625000TUNER PCB 9A09625100TUNER SHIELD CASE 2D1-2 9A09589500DIODE,IN4148 2G1 9A09622100FILTER,CERAMIC L10.7MS2 R2G2 9A09622200FILTER,CERAMIC SFU450B 2G3 9A09622100FILTER,CERAMIC L10.7MS2 R2G4 9A09622300OSC,CRYSTAL 4.5MHZ2L1 9A09622400COIL,SPRING 3.5T M4.5 2L2 9A09622500COIL,SPRING 4.5T M3.5 2L3 9A09622600COIL,SPRING 3.5T M3.5 2L4 9A09622700INDUCTOR,AL0410 1022L5 9A09622800INDUCTOR,AL0410 2212N1 9A09622900IC,TA2149N 2N2 9A09623000IC,TC9257F 2T1 9A09623800IFT,AM RF 10B(BLK) 2T2 9A09623900IFT,AM OSC 7B(RED) 2T3 9A09624000IFT,AM IFT 7B(WHT) 2T4 9A09624100IFT,FM DET 7B(PNK) 2T5-6 9A09624200IFT,MPX 8B(BLK) 2TC2 9A09624300SVC,CYM1-2/7 2V1 9A09624400FET,2SK161GR 2V2 9A09624700TR,2SC9018H 2V3 9A09624600TR,2SC9014C 2V4-5 9A09589600TR,2SC1815GR 2V8 9A09624700TR,2SC9018H 2VD1-2 9A09624800DIODE,VARACTOR V1043 2VD3-4 9A09624900DIODE,VARACTOR V149B 2X1 9A07129000ANT JACK 10HEADPHONE PCB ASSYREF.NO.PARTS NO.DESCRIPTION9A09758160HEADPHONE PCB ASSY 9A09758200HEADPHONE PCB 9A09758500HEADPHONE JACK HOLDER 7D11-12 9A09589500DIODE,IN4148 7K1 9A06535000HEAD PHONE JACK 7R75-76 9A09758300R,2W 470 J SP SEL PCB ASSYREF.NO.PARTS NO.DESCRIPTION9A09758660SP SEL PCB ASSY 9A09758700SP SEL PCB SWA-B 9A09758800SP SELECTOR SW SP JACK PCB ASSYREF.NO.PARTS NO.DESCRIPTION9A09759060SP JACK PCB ASSY 9A09759100SP JACK PCB 9A09759200SP JACK POWER PCB ASSYREF.NO.PARTS NO.DESCRIPTION9A09756560POWER PCB ASSY 9A09756600POWER PCB 9A06896100FUSE CLIP C1-3 9A09587200C,275V 0.01UF KFU1 9A06534900FUSE,2A 125V SLOW BLOWFU2 9A09753200FUSE,6.3A 250V SLOW BLOWFU3 9A09756800FUSE,3.15A 250V SLOW BLOWL1 9A09756700COIL,TOROID 1145231CBASCHEMATIC DIAGRAMAG-790MAIN PCB (1/2)1 st Issue; March 20034C16224C1522+9V1I/O11O/I22O/I32I/O42C53C6VSS73I/O83O/I94O/I104I/O114C121C13VDD143N2CD406612341XS51231XS63C341043C321523C281033C264733C384U7/50V3C3647U/16V3C300.47U/50V3C202U2/50VSW-OUT33R-TO-I32T131T230T329R-TO-O28R-VRIN27LD126LD225A-GND24VR-OUT23PVR-IN22R-FOUT21R-ROUT20VDD19STB18DATA17CK16GND15L-ROUT14L-FOUT13FVR-IN12VR-OUT11A-GND10LD29LD18L-VRIN7L-TO-O6T35T24T13L-TO-I2SW-OUT1L-IN444L-IN343L-IN242L-IN141VSS40VREF39VCC38R-IN137R-IN236R-IN335R-IN4343N1TC9421+12-12V-12V3R234703C112U2/50V4R12180K4R43904R181004C2047U/16V4N1-24558D4N1-14558D5C647U/16V5C547U/16V5R101005R91005R847K5R747K5R21K5R11K3C14713C24713C34713C44713C64713C74713C84713R81K3R7 1K3R6 1K3R5 1K3R4 1K3R31K3R21K3R11K4R141kCD/LPHONO/RCD/RPHONO/LREC/LAUX/LAUX/RTAPE/LREC/RTAPE/R4R14704R24704R522K4R622K4C14714C24714C31814C41814C51814C61814C91024C101024C132234C142234C115624C125624R9 12K4R10 12K4R72704R82704C747U/16V4C172U2/50V4C182U2/50V4C1947U/16V4C847U/16V4R131k5C31015C41013R9 47K3R10 47K3R11 47K3R1247K3R13 47K3R14 47K5N1-14558D5N1-24558D4R171004R33904R11180K3C122U2/50V3C142U2/50V3C42100U/16V3C152U2/50V3C47100U/16V3C46104+123C132U2/50V3C162U2/50V3C232U2/50V3C242U2/50V3C182U2/50V3C4147U3C172U2/50V3C192U2/50V3R161k3R151k3R191K3R201K3R182K23R211004R1533K4R1633K3C431041231XS13V22SC28783V12SC28783R172K25R347k5R447k5R615k5R515k3C290.47U/50V3C3547U/16V3C374U7/50V3C394U7/50V3C404U7/50V5C147U/16V5C247U/16V3C254733C271033C311523C331043C212U2/50V3C222U2/50VMUTETAPE/TAPE6574123813245678TUNER INRL3R22100+9V3C44100U/16V3C451043C54713R2422k3R2522K3D16V83R28 100K3R26100K3R27 100K3R30100K3R29100K3R31 100K3R33100K3R32 100K3R34 100K3R36 100K3R35100K3R37100K3R3947K3R3847KL-1R-1AM/FM Stereo ReceiverA AG G- -7 79 90 045231CBASCHEMATIC DIAGRAMAG-790MAIN PCB (2/2), HEADPHONE PCB, SP SEL PCB, SP JACK PCB, POWER PCB7C3110P7C3010PS27R7810/2W7R7710/2W7V255401S1POWER SWC1103/250VFU26.3A/250V1C156800U/70V1R3 15K1C146800U/70V1R215K1D101N54041D111N54041D121N54041D91N54047C221047C2847U/63V1D1540041D1840041D1441487R6910K7R701007R7347K7R7447K1C1310U/63V1R522K7C27220U/16V7C26220U/16V1D1341487R7210K7C254U7/63V7C231027R6356K7R5922K7V298050D7V288050D7V278050D7V268050D7C211047R625.1/2W7R6022K7R615.1/2W7R7110K7C1747U/25V7R511K7R1522K7R191007R171007V155517R11K7C14U7/50V7R53K37R73K37R253K3/0.5W7R292207C547U/63V7V355517R91007R111007R1322K7V954017V15669A7V1952007V2119437V17649A7V1355517V1155517V554017V754017C91047C1330P7R313K37R331K57VR13007C1530P7R352207R213K37R233K37C747U/63V7C111047R273K3/0.5W7R4933K7R372207R39337R430.33/5W7R450.33/5W7R471007R411007V2355517R533K37R5527K7C194U7/50V7L11.5uH7L21.5uH7C204U7/50V7R5627K7R543K37V2455517R421007R481007R460.33/5W7R440.33/5W7R40337R382207R5033K7R283K3/0.5W7C121047C847U/63V7R243K37R223K37R362207C1630P7VR23007R341K57R323K37C1430P7C101047V854017V654017V1255517V1455517V18649A7V2219437V2052007V16669A7V1054017R1422K7R121007R101007V455517C647U/63V7R302207R263K3/0.5W7R83K37R63K37C24U7/50V7R21K7V255517R181007R201007R1622K7R521K7C1847U/25V7R433K7C4100P7C3100P7R333K7C2410U/63V7R672K77R683K3/1W7R64510K7D841487R65220K7R664K71XS11XS21D31N40041D41N40041D21N40041D11N40041C1100U/35V1R11001XS31D51N40041D81N40041D61N40041D71N40041C42200U/25V1C52200U/25V1N378M051N178121N279121C101000U/16V1C111000U/16V1C3 470U/16V1D1640041D1740041R42K21C12100U/25VRELD1FU16.3A/250V1FU26.3A/250V7D730V7D124V7D324V7D224V7D424V7D1012V7R5718K7D541487D641487R5818K121XP12121XP13+12-12VAC 120V/230VSEL.SWVOLTAGE+5VG1231XP71231XS7SWBSWARELARELB18732457K17R756807R766801X1Speakers out7C29103RELCONOFFONOFF7D1141487D124148RLGLR12341XS8BCAV12341XP8VACBOFFOFFOFFONONONRLG12345671XS912345671XP9AL+AR+BL+BR+AL-AR-GAL+BL+AR+BR+AL-BL-AR-BR-AL+AR+BL+BR+AL-AR-GLRRLL1-1L1-2C3103/250VC2103/250VAC JACK OUTFU3 3.15A/250V1N47809+9+12VG12345671XS4POW2.1V-24V0V2.1VDGND+5V1D191N41481D201N41481D221N41481D211N41481C18100U/16V1C19220U/16V1FU3 2A/250V1FU4 2A/250VRLFU12.5A/250V1D2324V/1WR-1L-11 st Issue; March 2003AM/FM Stereo ReceiverA AG G- -7 79 90 045231CBASCHEMATIC DIAGRAMAG-790TUNER PCB12341XS142L33.5T2L24.5T2X12T52C5152*2R121K2C37100U/10V2C282032L41022C202032D1IN41482L52212C432032C38100U/10V121XS132C452032C241022R202K2R212K2R222K2G44.5M2R232K42C41302C42302C441032R171K2C403U3/50V2V5C1815GR2V4C1815GR2C462032C47100U/16V2C3947U/16V2R181K2R198K21231XS10121XS12XT1XTN2PERIOD3CLOCK4DATA5OT-16OT-27OT-38OT-49I/O-510I/O-611VDD12AMIN13FMIN14GND15IFIN216I/O-817I/O-718DO119DO2202N2TC9257F2C16203*2TC12/72VD1V1042VD3V149B2C261042C271042R113K32C361U/50V2R133K32C354U7/50V2C191022C221022C231022C211022R15300K2R142K2R9100K2C105012C152032C9202R108K22R6 100K2C132032C4*72C61522R33K32R53K32C122032C81522C251042R41002R8100K2C142032R7100K2C71522R1622K2C34220U/10V2C334U7/50V2C324U7/50V2C176822C186822C3122U/16V2G1 L10.7M2G2 450B2R13302C29U1/50V2C3302C2332C1302L13.5T2R23302T32T22C111032VD2V1042V1K161GR2TC22/72T12VD4V149B2V39014C2V29018HRFGND1RFIN2AMLCUT3MIXOUT4VCC5AMIF6FMIF7GND8AGC9QUOD10ROUT11LOUT12LPF213LPF114DETIN15DETO16IFREQ17ST18OSCO19AMOSC20FMOSC21AMRF22RFVCC23FMRF242N1TA2149N2C511532C491532C481532C501532T42C52203LOOP75FMAMRGL+12VG+5VGDATACLOCKPERIODST2C53182T22G3L10.7M2V99018H2R29300K2R303302R313302C54222R32152D2 IN41482C55471 st Issue; March 2003AM/FM Stereo ReceiverA AG G- -7 79 90 045231CBASCHEMATIC DIAGRAMAG-790FRONT PCBINSTRUCTIONS FOR SERVICE PERSONNELBEFORE RETURNING APPLIANCE TO THE CUSTOMER, MAKE LEAKAGE-CURRENT OR RESISTANCE MEASUREMENTS TO DETERMINE THAT EXPOSEDPARTS ARE ACCEPTABLY INSULATED FROM THE SUPPLY 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