Teac-AG790-rec-sm维修电路原理图.pdf

A AG G- -7 79 90 0 SERVICE MANUAL AM/FM Stereo Receiver Effective : April, 2003S-0092A 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. CONTENTS 1 SPECIFICATIONS 2 2 ADJUSTMENTS AND CHECKS 3 3 EXPLODED VIEWS AND PARTS LIST 6 4 PC BOARDS AND PARTS LIST 8 RadioFans.CN 收音机爱 好者资料库 1 SPECIFICATIONS 2 Amplifier Section Output 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 kohms LINE: 300 mV/22 kohms Frequency Response . PHONO: 20 Hz20 kHz, 3 dB LINE: 20 Hz50 kHz, +1/3 dB Signal-to-Noise Ratio . PHONO: 80 dB (IHF-A) LINE: 80 dB (IHF-A) Tone Control. BASS: 10 dB at 100 Hz TREBLE: 10 dB at 10 kHz Loudness Control (Volume at 40 dB Position). +9 dB at 100 Hz, +8 dB at 10 kHz FM Tuner Section (Without notes 98.1 MHz, 65 dBf) Tuning Range . 87.5 MHz108.0 MHz (100 kHz steps) Usable Sensitivity (IHF). Mono: 20 dBf 50 dB Quieting Sensitivity. Mono: 39 dBf, Stereo: 46 dBf Capture Ratio . 2.8 dB Image Rejection Ratio . 20 dB AM Suppresion Ratio. 48 dB Harmonic Distortion (1 kHz). Mono: 0.4 %, Stereo: 0.5 % Frequency Response. 30 Hz15 kHz, +2/3 dB Stereo Separation (1 kHz) . 35 dB Signal-to-Noise Ratio . Mono: 57 dB, Stereo: 55 dB AM Tuner Section Tuning Range. 530 kHz1,720 kHz (10 kHz steps) Usable Sensitivity . 55 dB/m Total Harmonic Distortion . 1 % at 85 dB/m Signal-to-Noise Ratio . 48 dB at 85 dB/m General Power 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 1 FM ”T” Type Antenna x 1 Remote 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 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 2-1 AMPLIFIER SECTION Bias Current Adjustment 1. 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 for 10 minutes, and adjust 7VR2 (Lch) so that the voltage becomes 3.31.3mV. 4. Adjust 7VR1 (Rch) in the same way. 7VR17VR2 7R467R44 0.33/5W0.33/5W DC voltmeter 7R457R43 0.33/5W0.33/5W DC voltmeter MAIN PCB 4 ITEM SETTING ADJUSTMENT POINTS ADJUST 2. AM Sensitivity 600 kHz/1500 kHz 50 dB/m 400 Hz (30 % Mod) REC OUT AM 600 kHz2T1 (BLK)Max. 3. AM IF 1000 kHz 50 dB/m 400 Hz (30 % Mod) REC OUT AM 1000 kHz2T3 (WHT)Max. 4. FM Sensitivity 90 MHz 1020 dBf 1 kHz (100 % Mod) REC OUT FM 90 MHz2L2 (4.5T)Max. 5. FM Distortion 98 MHz 60 dBf 1 kHz (100 % Mod) REC OUT FM 98 MHz2T4 (PINK)Min. distortion 6. FM Stereo 98 MHz 60 dBf Stereo signal L-R REC OUT FM 98 MHz2T5, 2T6Min. distortion 1. VT Adjust 2R19 (VT) 2J2 (GND) FM 87.5 MHz2L3 (3.5T)DC 1.00.05V INPUTOUTPUTAG-790 After adjusting 2TC2, readjust 2T1 at 600 kHz. AM 1500 kHz2TC2Max. AM 1720 kHz AM 530 kHz FM 108.0 MHz Check 2T2 (RED) Check 8.0V DC 1.10.05V DC 8.00.5V 2-2 TUNER SECTION 5 AC Voltmeter FM Signal Generator Stereo Signal Generator Distortion Analyzer D E G F AC Voltmeter AM Signal Generator B C AM Loop Antenna 60cm 2T3 2T6 2T5 2T2 2T1 2T4 2L2 2L3 2TC2 2R19 2J2 TUNER PCB + DC Voltmeter A 3 EXPLODED VIEWS AND PARTS LIST 6 7 EXPLODED VIEW LIST REF.NO.PARTS NO.DESCRIPTIONREMARKS 1 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 ACCESSORIES REF.NO.PARTS NO.DESCRIPTIONREMARKS 9A09551200OWNERS MANUAL,EFSP 600520225 9A09763000REMOTE CONTROL UNIT,UR-420500079000 9A06902500FM ANT 59W360100 9A06902600AM ANT 59W360200 8 4 PC BOARDS AND PARTS LIST MAIN PCB 9 SP JACK PCB SP SEL PCB HEADPHONE PCB POWER PCB FRONT PCB TUNER PCB MAIN PCB ASSY REF.NO.PARTS NO.DESCRIPTION 9A09752260MAIN 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 BLOW 1FU3-4 9A09753300FUSE,2A 250V SLOW BLOW 1N1 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 1.5UH 7R25-28 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 5A FRONT PCB ASSY REF.NO.PARTS NO.DESCRIPTION 9A09755060FRONT PCB ASSY 9A09755100FRONT PCB 9A09756400VFD DISPLAY 8D1 9A09592400DIODE,ZENER 5V1 1/2W 8D2-7 9A09589500DIODE,IN4148 8G1 9A09592800OSC,CRYSTAL 4.433M 8IR1 9A09755300INFRARED RECEIVER,SM0038 8N1 9A09755400IC,HT48R50A-1 8N2 9A09755500IC,PT6311 8N3 9A09592600IC,HT24LC02 8V1 9A09755700TR,2SA1015GR 8VR1 9A09755800ENCODER,R162EC-D1-20F-24C LED1-3 9A09755900LED,M3 RED SW1-16 9A09593100SW,TACT TUNER PCB ASSY REF.NO.PARTS NO.DESCRIPTION 9A09757660TUNER PCB ASSY 9A09625000TUNER PCB 9A09625100TUNER SHIELD CASE 2D1-2 9A09589500DIODE,IN4148 2G1 9A09622100FILTER,CERAMIC L10.7MS2 R 2G2 9A09622200FILTER,CERAMIC SFU450B 2G3 9A09622100FILTER,CERAMIC L10.7MS2 R 2G4 9A09622300OSC,CRYSTAL 4.5MHZ 2L1 9A09622400COIL,SPRING 3.5T M4.5 2L2 9A09622500COIL,SPRING 4.5T M3.5 2L3 9A09622600COIL,SPRING 3.5T M3.5 2L4 9A09622700INDUCTOR,AL0410 102 2L5 9A09622800INDUCTOR,AL0410 221 2N1 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 10 HEADPHONE PCB ASSY REF.NO.PARTS NO.DESCRIPTION 9A09758160HEADPHONE PCB ASSY 9A09758200HEADPHONE PCB 9A09758500HEADPHONE JACK HOLDER 7D11-12 9A09589500DIODE,IN4148 7K1 9A06535000HEAD PHONE JACK 7R75-76 9A09758300R,2W 470 J SP SEL PCB ASSY REF.NO.PARTS NO.DESCRIPTION 9A09758660SP SEL PCB ASSY 9A09758700SP SEL PCB SWA-B 9A09758800SP SELECTOR SW SP JACK PCB ASSY REF.NO.PARTS NO.DESCRIPTION 9A09759060SP JACK PCB ASSY 9A09759100SP JACK PCB 9A09759200SP JACK POWER PCB ASSY REF.NO.PARTS NO.DESCRIPTION 9A09756560POWER PCB ASSY 9A09756600POWER PCB 9A06896100FUSE CLIP C1-3 9A09587200C,275V 0.01UF K FU1 9A06534900FUSE,2A 125V SLOW BLOW FU2 9A09753200FUSE,6.3A 250V SLOW BLOW FU3 9A09756800FUSE,3.15A 250V SLOW BLOW L1 9A09756700COIL,TOROID 11 45231 C B A SCHEMATIC DIAGRAMAG-790MAIN PCB (1/2) 1 st Issue; March 2003 4C16 22 4C15 22 +9V 1I/O 1 1O/I 2 2O/I 3 2I/O 4 2C 5 3C 6 VSS 7 3I/O 8 3O/I 9 4O/I 10 4I/O 11 4C 12 1C 13 VDD 14 3N2 CD4066 1 2 3 4 1XS5 1 2 3 1XS6 3C34 104 3C32 152 3C28 103 3C26 473 3C38 4U7/50V 3C36 47U/16V 3C30 0.47U/50V 3C20 2U2/50V SW-OUT 33 R-TO-I 32 T1 31 T2 30 T3 29 R-TO-O 28 R-VRIN 27 LD1 26 LD2 25 A-GND 24 VR-OUT 23 PVR-IN 22 R-FOUT 21 R-ROUT 20 VDD 19 STB 18 DATA 17 CK 16 GND 15 L-ROUT 14 L-FOUT 13 FVR-IN 12 VR-OUT 11 A-GND 10 LD2 9 LD1 8 L-VRIN 7 L-TO-O 6 T3 5 T2 4 T1 3 L-TO-I 2 SW-OUT 1 L-IN4 44 L-IN3 43 L-IN2 42 L-IN1 41 VSS 40 VREF 39 VCC 38 R-IN1 37 R-IN2 36 R-IN3 35 R-IN4 34 3N1 TC9421 +12 -12V-12V 3R23 470 3C11 2U2/50V 4R12 180K 4R4 390 4R18100 4C20 47U/16V 4N1-2 4558D 4N1-1 4558D 5C6 47U/16V 5C5 47U/16V 5R10 100 5R9 100 5R8 47K 5R7 47K 5R2 1K 5R1 1K 3C1 471 3C2 471 3C3 471 3C4 471 3C6 471 3C7 471 3C8 471 3R81K 3R7 1K 3R6 1K 3R5 1K 3R4 1K 3R31K 3R21K 3R11K 4R14 1k CD/L PHONO/R CD/R PHONO/L REC/L AUX/L AUX/R TAPE/L REC/R TAPE/R 4R1 470 4R2 470 4R5 22K 4R6 22K 4C1 471 4C2 471 4C3 181 4C4 181 4C5 181 4C6 181 4C9 102 4C10 102 4C13 223 4C14 223 4C11 562 4C12 562 4R9 12K 4R10 12K 4R7 270 4R8 270 4C7 47U/16V 4C17 2U2/50V 4C18 2U2/50V 4C19 47U/16V 4C8 47U/16V 4R13 1k 5C3 101 5C4 101 3R9 47K 3R10 47K 3R11 47K 3R1247K 3R13 47K 3R14 47K 5N1-1 4558D 5N1-2 4558D 4R17 100 4R3 390 4R11 180K 3C12 2U2/50V 3C14 2U2/50V 3C42 100U/16V 3C15 2U2/50V 3C47 100U/16V 3C46 104 +12 3C13 2U2/50V 3C16 2U2/50V 3C23 2U2/50V 3C24 2U2/50V 3C18 2U2/50V 3C41 47U 3C17 2U2/50V 3C19 2U2/50V 3R16 1k 3R15 1k 3R19 1K 3R20 1K 3R18 2K2 3R21 100 4R15 33K 4R16 33K 3C43 104 1 2 3 1XS1 3V2 2SC2878 3V1 2SC2878 3R17 2K2 5R3 47k 5R4 47k 5R6 15k 5R5 15k 3C29 0.47U/50V 3C35 47U/16V 3C37 4U7/50V 3C39 4U7/50V 3C40 4U7/50V 5C1 47U/16V 5C2 47U/16V 3C25 473 3C27 103 3C31 152 3C33 104 3C21 2U2/50V 3C22 2U2/50V MUTE TAPE /TAPE 6 5 7 4 1 2 3 8 1 3 2 4 5 6 7 8 TUNER IN RL 3R22 100 +9V 3C44 100U/16V 3C45 104 3C5 471 3R24 22k 3R25 22K 3D1 6V8 3R28 100K 3R26 100K 3R27 100K 3R30 100K 3R29 100K 3R31 100K 3R33 100K 3R32 100K 3R34 100K 3R36 100K 3R35 100K 3R37 100K 3R39 47K 3R38 47K L-1 R-1 AM/FM Stereo Receiver A AG G- -7 79 90 0 45231 C B A SCHEMATIC DIAGRAMAG-790MAIN PCB (2/2), HEADPHONE PCB, SP SEL PCB, SP JACK PCB, POWER PCB 7C31 10P 7C30 10P S2 7R78 10/2W 7R77 10/2W 7V25 5401 S1 POWER SW C1 103/250V FU2 6.3A/250V 1C15 6800U/70V 1R3 15K 1C14 6800U/70V 1R2 15K 1D10 1N5404 1D11 1N5404 1D12 1N5404 1D9 1N5404 7C22 104 7C28 47U/63V 1D154004 1D184004 1D14 4148 7R69 10K 7R70 100 7R73 47K 7R7447K 1C13 10U/63V 1R522K 7C27 220U/16V 7C26 220U/16V 1D134148 7R72 10K 7C25 4U7/63V 7C23 102 7R63 56K 7R59 22K 7V29 8050D 7V28 8050D 7V27 8050D 7V26 8050D 7C21 104 7R62 5.1/2W 7R60 22K 7R61 5.1/2W 7R71 10K 7C17 47U/25V 7R51 1K 7R15 22K 7R19 100 7R17 100 7V1 5551 7R1 1K 7C1 4U7/50V 7R5 3K3 7R7 3K3 7R25 3K3/0.5W 7R29 220 7C5 47U/63V 7V3 5551 7R9 100 7R11 100 7R13 22K 7V9 5401 7V15 669A 7V19 5200 7V21 1943 7V17 649A 7V13 5551 7V11 5551 7V5 5401 7V7 5401 7C9 104 7C13 30P 7R31 3K3 7R33 1K5 7VR1 300 7C15 30P 7R35220 7R21 3K37R23 3K3 7C7 47U/63V 7C11 104 7R273K3/0.5W 7R49 33K 7R37 220 7R39 33 7R43 0.33/5W 7R45 0.33/5W 7R47 100 7R41 100 7V23 5551 7R533K3 7R5527K 7C19 4U7/50V 7L1 1.5uH 7L2 1.5uH