Teac-AG370-rec-sm维修电路原理图.pdf

A AG G- -3 37 70 0 SERVICE MANUAL AM/FM Stereo Receiver Effective : April, 2003S-0091A 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 . 50 + 50 watts RMS (0.9 % THD, 1 kHz, 8 ohms) Total Harmonic Distortion. 0.05 % (at 45 watts,1 kHz) Input Sensitivity/Impedance . PHONO: 4 mV/22 kohms LINE: 270 mV/20 kohms Frequency Response. PHONO: 20 Hz20 kHz, +/3 dB LINE: 20 Hz30 kHz, +1/3 dB Signal-to-Noise Ratio. PHONO: 60 dB LINE: 68 dB Tone Control . BASS: +/9 dB at 100 Hz TREBLE: +/7 dB at 10 kHz Loudness Control (Volume at 40 dB Position). +7 dB at 100 Hz, +5 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. 520 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 General Power Requirements. 120 V/230 V, 50-60 Hz Power Consumption. 120 W AC Outlet . Unswitched x 1, 100 W max (1 A max) Dimensions (W x H x D) . 17-1/8 x 5-1/8 x 12-5/8 (435 x 130 x 320 mm) Weight (net) . 15-7/16 lbs (7.0 kg) Standard Accessories . AM Loop Antenna x 1 FM ”T” Type Antenna 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 7VR1 (Lch) so that the voltage becomes 3.31.3mV. 4. Adjust 7VR2 (Rch) in the same way. 7VR17VR2 7R467R447R457R43 0.33/5W0.33/5W 0.33/5W0.33/5W MAIN PCB DC voltmeterDC voltmeter 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-370 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 1 2 3 4 5 6 7 8 9 q w e r t y u i o p a s d f g h j k l ; z x c v b n m , . / ! # $ 7 EXPLODED VIEW LIST REF.NO.PARTS NO.DESCRIPTIONREMARKS 1 9A06536200MASTER VR KNOB 53W360900 2 9A06900300INDICATOR 510104200 3 9A09581400TONE CONTROL KNOB 530503000 4 9A09580800DISPLAY LENS 510503600 5 9A09580700PANEL 510503500 6 9A09580900FUNCTION KEY 530502500 7 9A09581200MEMORY KEY 530502600 8 9A09581000BAND KEY 530502900 9 9A09592000SILICON RUBBER,T0-3P2 322228370 10-1 9A09590200TR,2SD1047E 230104705 10-2 9A09590300TR,2SB817E 230817005 11 9A09581100TUNING KEY 530502800 12 9A06536000LOUD KNOB 53W360700 13 9A09581300AUTO/MANUAL KEY 530502700 14 9A09592900VFD DISPLAY 250370000 15 9A09579810HEADPHONO PCB ASSY 033700601 16 9A09579910SELECT PCB ASSY 033700401 17 9A07063400SPEAKER SWITCH KNOB 53W361000 18 9A09580010SELECT PCB ASSY 033700501 19 9A06602800POWER SWITCH 180222501 20 9A06535900POWER KNOB 530049400 21 9A09579410CONTROL PCB ASSY 033700201 22 9A06536400LEG(GOLD) 540082601 23 9A06536300LEG(BLACK) 540082600 24 9A09581600BOTTOM COVER 520504800 25 9A06901000SIDE BRACKET(L) 52W360300 26 9A09581800SIDE BRACKET(R) 520505100 27 9A09581900TOP COVER 520505000 28 9A09579310MAIN PCB ASSY 033700101 29 9A09591800HEAT SINK(A) 560502100 30 9A06901200H/S BRACKET 540082800 31 9A09581700REAR COVER 520504900 32 9A09580100POWER TRANSFORMER157631522 33 9A06904300GND TERMINAL,M3 320018601 34 9A06900600CORD BUSHING 550011700 35 9A06602900AC SOCKET 26CS18401 36 9A07064400SPACER SUPPORT 550098819 37 9A09579510TUNER PCB ASSY 033700301 38 9A09591700CABLE CLIP 550505500 39 9A09591600PCB SUPPORT 550505200 40 9A06900700NAME PLATE 510104300 41 9A09580200AC POWER CORD 210183011 42 9A09579610POWER SOCKET PCB ASSY 033700701 43 9A09579710POWER SELECT SW PCB ASSY033700801 44 9A09587200C,275V 0.01UF136M103M2 INCLUDED ACCESSORIES REF.NO.PARTS NO.DESCRIPTIONREMARKS 9A09471700OWNERS MANUAL,EFSP 600520205 9A06902500FM ANT 59W360100 9A06902600AM ANT 59W360200 8 4 PC BOARDS AND PARTS LIST MAIN PCB 9 SP SEL PCBSP SEL PCBHEADPHONE PCBPOW SEL PCBPOWER PCB FRONT PCBTUNER PCB MAIN PCB ASSY REF.NO.PARTS NO.DESCRIPTION 9A09579310MAIN PCB ASSY 9A09592100MAIN PCB 9A06534100SP JACK 9A06534200RCA JACK,6P 9A06534300RCA JACK,4P 9A06896100FUSE CLIP 9A06897300LEAD PIN,3P 9A06901200H/S BRACKET 9A09591600PCB SUPPORT 9A09591700CABLE CLIP 9A09591800HEAT SINK(A) 9A09591900HEAT SINK(B) 9A09592000SILICON RUBBER,T0-3P2 1C1 9A09586700C,ELEC 35V 100UF M 1C4-5 9A09586600C,ELEC 25V 2200UF M 1C12 9A09586500C,ELEC 25V 100UF M 1C14-15 9A09587000C,ELEC 58V 6800UF M 1D1-8 9A09589300DIODE,IN4004 1D9-12 9A09589400DIODE,IN5404 1D13-14 9A09589500DIODE,IN4148 1D15-18 9A09589300DIODE,IN4004 1D19 9A09589100DIODE,ZENER 24V 1W 1FU1-2 9A09591200FUSE,5A 250V SLOW BLOW 1N1 9A09590800IC,L7812CV 1N2 9A09590900IC,L7912CV 1N3 9A09590700IC,L7805CV 3D1-2 9A09588800DIODE,ZENER 6V8 1/2W 3N1 9A09590400IC,TC4052BP 3N2 9A09590500IC,TC4066BP 3V1-3 9A09589600TR,2SC1815GR 4N1 9A09590600IC,4560D 5N1 9A09590600IC,4560D 6N1 9A09590600IC,4560D 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 7R43-46 9A09585600R,CEMENT 5W R33 J 7R61-62 9A09585400R,2W 6R1 J 7R70 9A09585300R,0.5W 100 J 7R77-78 9A09585500R,2W 10 J 7V1-4 9A09589700TR,2N5551 7V5-10 9A09589800TR,2N5401 7V11-14 9A09589700TR,2N5551 7V15-16 9A09589900TR,3DA4381 7V17-18 9A09590000TR,3CA1667 7V19-20 9A09590200TR,2SD1047E 7V21-22 9A09590300TR,2SB817E 7V23-24 9A09589700TR,2N5551 7V25 9A09589800TR,2N5401 7V26-29 9A09590100TR,2SC8050D 7VR1-2 9A09585700VR,SEMI-FIXED 300 J REL1 9A09591100RELAY,12V 5A CONTROL PCB ASSY REF.NO.PARTS NO.DESCRIPTION 9A09579410CONTROL PCB ASSY 9A09593800FRONT PCB 9A09592900VFD DISPLAY 9A09593900VFD SHIELD CASE 6S1 9A09593000SW,LOUDNESS 6VR1-2 9A06534400VR,100KBX2 6VR3 9A06604000VR,50KAX2 6VR4 9A06534500VR,100KW 8D1 9A09589500DIODE,IN4148 8D2 9A09592400DIODE,ZENER 5V1 1/2W 8D3-8 9A09589500DIODE,IN4148 8G1 9A09592800OSC,CRYSTAL 4.433M 8N1 9A09592500IC,HT48R50A-1 8N2 9A09592600IC,HT24LC02 8N3 9A09592700IC,PT6312LQ SW1-20 9A09593100SW,TACT TUNER PCB ASSY REF.NO.PARTS NO.DESCRIPTION 9A09579510TUNER 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 RF10B(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 9A09624500TR,2SC9018I 2V3 9A09624600TR,2SC9014C 2V4-5 9A09589600TR,2SC1815GR 2V6-7 9A09624600TR,2SC9014C 2V8 9A09624700TR,2SC9018H 2VD1-2 9A09624800DIODE,VARACTOR V1043 2VD3-4 9A09624900DIODE,VARACTOR V149B 2X1 9A07129000ANT JACK 10 SELECT PCB ASSY REF.NO.PARTS NO.DESCRIPTION 9A09579910SELECT PCB ASSY 9A09626300SP SEL PCB 2S1 9A09625800SP SELECTOR SW SELECT PCB ASSY REF.NO.PARTS NO.DESCRIPTION 9A09580010SELECT PCB ASSY 9A09626400SP SEL PCB 2S2 9A09625800SP SELECTOR SW HEADPHONE PCB ASSY REF.NO.PARTS NO.DESCRIPTION 9A09579810HEADPHONE PCB ASSY 9A09625700HEADPHONE PCB 9A06901600H/P JACK HOLDER 7D11-12 9A09589500DIODE,IN4148 7K1 9A06535000HEAD PHONE JACK 7R75-76 9A06889700R,1/2W 330 POWER SELECT SW PCB ASSY REF.NO.PARTS NO.DESCRIPTION 9A09579710POWER SELECT SW PCB ASSY 9A09625400POW SEL PCB 9A07069700POWER CHANGE SWITCH POWER SOCKET PCB ASSY REF.NO.PARTS NO.DESCRIPTION 9A09579610POWER SOCKET PCB ASSY 9A09625300POWER PCB 9A06602900AC SOCKET 9A06896100FUSE CLIP FU1 9A09625200FUSE,2.5A 250V SLOW BLOW 11 45231 C B A SCHEMATIC DIAGRAMAG-370MAIN PCB (1/2) 1 st Issue; January 2003 1 2 3 4 5 6 1XS1 6VR4 100K +12 -12V -12V +12+12 -12V -12V +12 4C18 220 4C17 220 4R16 100K 4R15 100K 3D2 6V8 3D1 6V8 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 3N2CD4066 4R12 180K 4R4 390 6C1 4U7/50V 6N1-2 4558D 6N1-1 4558D 6C16 104 6C15 104 6C14 102 6C13 102 6C6 820 6C5 820 6C8 47 6C7 47 6C4 153 6C3 153 6C12 4U7/50V 6C11 4U7/50V 6C10100U/16V 6C9100U/16V 6C2 4U7/50V 6R24 100 6R13 1K 6R14 1K 6R7 1K 6R8 1K 6R110K 6R210K 6R915K 6R1015K 6R5 10K 6R6 10K 6R333K 6R433K 6R11 33K 6R12 33K 6R15 1K 6R16 1K 6R17 5K6 6R18 5K6 6R19 5K6 6R20 5K6 6R22 1K 6R21 1K 4R18100 4C20 100U/16V 4N1-2 4558D 4N1-1 4558D 5C2 4U7/50V 5C1 4U7/50V 5C8 100U/16V 5C7 100U/16V 5R14 1K 5R13 1K 5R12 100 5R11 100 5R10 33K 5R9 33K 5R8 15K 5R7 15K 5R6 100K 5R5 100K 5R4 47K 5R3 47K 5R2 1K 5R1 1K 3C1 471 3C2 471 3C3 471 3C4 471 3C5 471 3C6 471 3C9 22 3C10 22 3C7 471 3C8 471 3R8 1K 3R71K 3R63K9 3R53K9 3R43K9 3R33K9 3R23K9 3R1 3K9 4R14 1K 3C12 104 3C11 104 3V1 C1815 3V3 C1815 3V2 C1815 CD/L PHONO CD/R 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 4R912K 4R1012K 4R7 270 4R8 270 4C7 47U/16V 4C15 4U7 4C16 4U7 4C19 100U/16V 4C8 47U/16V 4R13 1K 5C3 22U/16V 5C4 22U/16V 3R20 100K 3R9 33K 3R10 33K 3R11 33K 3R12 33K 3R13 33K 3R14 33K 3R1710K 3R1810K 3R19 10K 5N1-1 4558D 5N1-2 4558D 6R23 100 4R17 100 4R3 390 4R11 180K Y0 1 Y2 2 Y 3 Y3 4 Y1 5 S 6 VEE 7 VSS 8 A1 9 A0 10 X3 11 X0 12 X 13 X1 14 X2 15 VDD 16 3N1 CD4052 1 2 3 1XS6 3R2133K 3R2233K 3R15 100 3R16100 1 2 3 1XP10 1 2 3 1XS3 1 2 3 1XP3 6S1 6VR3 50KB 1 2 3 1XP4 6VR1-1 100KB 6VR1-2 100KB 6VR2-1 100KB 6VR2-2 100KB 6VR1 6VR2 1 2 3 4 5 6 1XS2 R G L 4 3 2 4 3 2 5 6 1 5 6 1 R G L 6 41 7 3 2 5 L G R BASS TREBLE BASS TREBLE 8 7 6 5 4 3 2 1 6 5 7 4 R 1 2 3 8 1 3 2 4 5 6 7 8 TAPE SW1 SW2 LGR BASS TREBLE AND1XP2 AND 1XP1 TO TUNER AM/FM Stereo Receiver A AG G- -3 37 70 0 45231 C B A SCHEMATIC DIAGRAMAG-370MAIN PCB (2/2), HEADPHONE PCB, SP SEL PCB, POWER PCB, POW SEL PCB 7C31 10P 7C30 10P S2 7R78 10/2W 7R77 10/2W 1 2 1XS10 1 2 1XP10 1 2 3 1XP9 1 2 3 1XS9 1 2 3 4 5 1XP8 1 2 3 4 5 1XS8 1 2 3 4 5 1XP5 1 2 3 4 5 1XS5 1 2 3 1XS7 2S2 SPB 1X1 SPECKER 7V25 5401 S1 POWER SW C1 103/250V FU1 2.5A/250V 1C15 6800U/50V 1R3 15K 1C14 6800U/50V 1C16104 1C17104 1R215K 1D10 5404 1D11 5404 1D12 5404 1D9 5404 7C22 104 7C28 33U/50V 1D154004 1D184004 1D14 4148 7R69 10K 7R70 100 7R73 47K 7R7447K 1C13 10U/50V 1R522K 7C27 220U/16V 7C26 220U/16V 1D134148 7R72 10K 7C25 4U7/50V 7C23 102 7R63 56K 7R59 22K 7V29 805