NAD-T752-avr-sm 电路图 维修手册.pdf

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1、NAD SERVICE MANUALT 752 T 752 AV SURROUND SOUND RECEIVER AV SURROUND SOUND RECEIVER DRAFT DATE: 08 OCT, 2002RadioFans.CN 收音机爱 好者资料库 2 SAFETY INFORMATION RadioFans.CN 收音机爱 好者资料库 3 SERVICE SAFETY PRECAUTIONS 1. Replacing the fuses CAUTION: FOR CONTINUED PROTECTION AGAINST THE RISK OF FIRE REPLACE ONLY

2、 WITH SAME TYPE OF FUSE. Reference DesignatorPart NumberDescription F751*AH33-0160001-00-48Fuse 8A 250V Time Lag 5x20 MM UL/CSA F751*C33-0131002-00-48Fuse 5A 250V Time Lag 5x20 MM SEMKO/VDE F752*AH33-0111006 -00-48Fuse 1.6A 250V Time Lag 5x20 MM UL/CSA/VDE/SEMKO F752*C33-0151006 -00-48Fuse 800mA 250

3、V Time Lag 5x20 MM UL/CSA/VDE/SEMKO NOTE: : USA, CANADIAN MODEL ONLY. : EUROPEAN MODEL ONLY. 2. Safety check out (Only U.S.A. model) Before returning the product to the customer, make leakage current or resistance measurements to determine that exposed parts are acceptably insulated from supply circ

4、uit. CONTENTS DESCRIPTIONPAGE SPECIFICATIONS . 4 - 5 REAR PANEL / FRONT PANEL VIEW . 6 DISASSEMBLY INSTRUCTIONS . 7 WIRING DIAGRAM . 8 BLOCK DIAGRAM . 9 ADJUSTMENT POINTS DIAGRAM / AMPLIFIER ADJUSTMENT . 10 PCB LAYOUT. 11 - 23 SCHEMATIC DIAGRAM . 24 - 36 IC BLOCK DIAGRAM. 37 - 45 EXPLODED VIEW . 46

5、EXPLODED VIEW PARTS LIST . 47 - 48 ELECTRICAL PARTS LIST . 49 - 58 PACKING DIAGRAM . 59 Parts marked with the symbol are critical with regard to the risk of fire and electric shock. Replace only with parts recommended by the manufacturer. RadioFans.CN 收音机爱 好者资料库 4 SPECIFICATIONS POWER AMPLIFIER SECT

6、ION Rated distortion(Rated power level into 8 ohms, THD 20 Hz-20 kHz FL/C/FR) 0.1 % (Rated power level into 8 ohms, THD 20 Hz-20 kHz SL/SR) 0.1 % Input Sensitivity(ref. 8 ohms, 1 kHz)200 20 mV S/N Ratio(A-wtd, 1kHz, 1 W, 8 ohm, SL/SR) - 80 dB (A-wtd, 1kHz, 80 W, 8 ohm, SL/SR) - 96 dB Frequency Respo

7、nse(20 Hz - 20 kHz)0 0.8 dB Channel Balance(1 dB to -40 dB, 1 kHz) 2 dB (-41 dB to -50 dB, 1 kHz) 3 dB Audio muting at 1 kHz 55 dB Subwoofer out, 500 mV in (THD at 2 V O/P, 100 Hz) 0.5 % Crosstalk(500 mV input, 10 W, 1 kHz) -70 dB Controls Bass(at 500 mV in, 1 W out, 100 Hz) 10 dB 2 dB Treble(at 500

8、 mV in, 1 W out, 10 kHz) 10 dB 2 dB DOLBY DIGITAL SECTION Channel Difference(FL ref. Track 30) 1.2 dB Frequency Response Dolby config.2 SL Track 46 200 - 20 kHz 0.8 dB SR Track 47 200 - 20 kHz 0.8 dB C Track 44 200 - 20 kHz 0.8 dB Harmonic Distortion (1 W, Audio LPF, Dolby Config.1) FL Track 65 997

9、Hz 0.08 % FR Track 67 997 Hz 0.08 % SL Track 68 997 Hz 0.08 % SR Track 69 997 Hz 0.08 % C Track 66 997 Hz 0.08 % S/N Ratio(31 for O/P 1 W, Track 35)CCIR / ARM 65 dB Audio LPF 70 dB A-wtd 70 dB Channel Separation(1 W, 20 kHz LPF)Track 65 997 Hz 75 dB DOLBY PRO LOGIC II SECTION Frequency Resporse I/P

10、mode : L, R: 1 V in, 1 W, Ch L/R40 Hz0 1.5 dB 20 Hz0 0.8 dB I/P mode : L, R: 1 V in, 1 W, Ch C300 Hz0 0.8 dB 20 Hz0 0.8 dB I/P mode : L, R: 1 V in, 1 W, Ch SL/SR40 Hz0 1.5 dB 20 Hz-3 1.0 dB S/N Ratio (200 mV in, 1 W, A-WTD w/ 1 k termination) I/P mode : L, R: 1 kHz, Ch L/R 65 dB I/P mode : L, R: 1 k

11、Hz, Ch C 65 dB I/P mode : L, R: 1 kHz, Ch SL/SR 65 dB THD (2.2 V in, 1 W, w/ 80 kHz LPF, 1 kHz) 0.2 % 5 AM TUNER SECTION Input level is expressed as the reading in open circuit of 75-ohm source impedance signal generator Usable sensitivity(999/1000 kHz) 30 dBuv S/N Ratio(5 mV in) 30 dB THD(5 mV in)

12、3 % IF Rejection(450 kHz) 36 dB Image Rejection(F+2xIF) 28 dB Selectivity 17 dB Output110 20 mV Loop sensitivity(20 dB S/N) 999/1000 kHz 66 dB 603/600 kHz 66 dB 1404/1400 kHz 66 dB Frequency Response(100 - 2.3 kHz, 5 mV) 6 dB FM TUNER SECTION*C*AH Input level is expressed as the reading in open circ

13、uit of 75-ohm source impedance signal generator Usable sensitivity(98 MHz) 15 dBuv 15 dBuv S/N Ratio(60 dB, IHF wtd)Mono 65 dB 65 dB Stereo 60 dB 60 dB Frequency Response(20 Hz - 15 kHz, 60 dBm)0 1.5 dB0 1.5 dB Channel Separation(60 dBm)100 Hz 30 dB 30 dB 1 Hz 35 dB 35 dB 10 Hz 20 dB 25 dB Alternate

14、 Channel Selectivity (40 dBm, 400 kHz) 60 dB 45 dB Capture Ratio(40 dBm) 3 dB 3 dB AM Suppression (60 dBm, 100% Mod. FM, 30% Mod. AM) 40 dB 40 dB Image Rejection(119.4 MHz) 65 dB 65 dB I.F. Rejection(10.7 MHz) 78 dB 65 dB Pilot Suppression(60 dBm) 60 dB 60 dB THD (60 dBm, L=R 75 kHz for AH, 40 kHz D

15、ev for C)Mono 0.8 % 0.8 % Stereo 1 % 1 % Auto-Search SensitivityOn 24 dBuv 24 dBuv Off 15 dBuv 15 dBuv RDS decode Sensitivity 26 dBuv- PHYSICAL SPECIFICATIONS Dimensions (Width x Height x Depth)435 x 133 x 349 mm Net Weight14.40 Kg (31.68 lbs) Shipping Weight16.00 Kg (35.20 lbs) 6 12345 6789 1920111

16、2131415161718 10 23 1 151214 568 11 9 10 16 74 13 FRONT PANEL REAR PANEL / FRONT PANEL VIEW REAR PANEL 1.FM lead 300mm 1 6838-1001500-00-65SILICONE RUBBER7 6938-1030100-00-65MICA 1.5KV 22 X 27 X 0.125MM10 70 34-0100002-00-70AC INLET IEC 2 PIN 10A/250V1 71 35-0101109-00-67POWER SW TV-8 10A 250V1 NOTE

17、: THE COMPONENTS IDENTIFIED BY MARK ARE CRITICAL FOR RISK OF FIRE AND ELECTRICAL SHOCK. REPLACE ONLY WITH PART NUMBER SPECIFIED. : USA, CANADIAN MODEL ONLY. : EUROPEAN MODEL ONLY. 49 ELECTRICAL PARTS LIST FRONT AND CENTER AMPLIFIER BOARD PCB ASSEMBLY80-0907520-40-00 FRONT AND CENTER AMP ASSEMBLY SUR

18、ROUND AMPLIFIER BOARD PCB ASSEMBLY80-0907520-18-00SURROUND AMP ASSEMBLY DSP BOARD PCB ASSEMBLY80-0907520-65-00DSP ASSEMBLY AUDIO BOARD 80-0907520-11-00 TRANSISTORS Q301,Q303,Q307,Q30921-0000120-70-14XTR NPN HFE 68 30MHz SPT DTC144ES Q302,Q30821-0000450-70-14 XTR PNP 68 250MHz SPT DTA144ESA CAPACITOR

19、S C317-C33222-3226052-00-43 CAP ELEC SS 2.2uF 50V 20% C333-C33422-3470022-00-43 CAP ELEC SS 47uF 16V 20% ICS U30127-7892730-24-11I.C. ANALOG SW SMD TC9273F-004 U302,U30327-9496600-21-02 I.C. QUAD BILATERAL SWITCH LC4966 U30427-7055320-18-14 I.C. AUDIO LOW NOISE OP-AMP SMD NJM5532M RCA JACKS M30334-4

20、040420-00-60 RCA JACK 4 R-R/W-W GOLD RS-453G-04 M301-M30234-4060420-00-60RCA JACK 6 R-R-R/W-W-W GOLD RCA-653D-04 COMPONENT VIDEO BOARD 80-0907520-66-00 TRANSISTOR Q430121-0000120-70-14XTR NPN HFE 68 30MHz SPT DTC144ES CAPACITORS C4301-C430622-3226052-00-43CAP ELEC SS 2.2uF 50V 20% C4310-C4312,C43252

21、2-3100022-00-43CAP ELEC SS 10uF 16V 20% C4313-C431522-3106052-00-43CAP ELEC SS 1uF 50V 20% C4316,C4318,C432022-3101022-00-43CAP ELEC SS 100uF 16V 20% C4317,C4319,C432122-3220022-00-43CAP ELEC GS 22uF 16V 20% ICS U430127-5176600-18-23I.C. VIDEO 3-CH 75 OHM DRIVER BA7660FS U4302-U430327-0140520-18-00

22、I.C. SINGLE DUAL TRIPLE M74HC4052MIR Reference No.Part No.Description COMPLETE HEAT SINK AND BOTH AMPLIFIER MODULES 95-0907525-12-01 50 Reference No.Part No.Description RCS JACKS M431-M432,M43434-4032020-00-60 RCA 3 G-BL-R GOLD RS-354G-18 SWITCH S430135-4102209-00-67 SW SLIDE 2P2T JSK022N09-G09 DIGI

23、TAL BOARD 80-0907520-47-00 FIBRE OPTICAL J100826-6691386-00-16FIBRE OPTIC TRANSMITTER GP1FA550TZ J1005-J100626-6701380-01-16FIBRE OPTIC RECEIVING UNIT GP1FA550RZ CAPACITORS C1066, C106722-3226052-00-43 CAP ELEC SS 2.2uF 50V 20% IC U1024, U102627-0804990-18-00 I.C. HEX INVERTER M74HCU04MIR RCA JACKS

24、J1001-J1004,J100734-4010320-00-60RCA JACK 1 BLACK GOLD RS-146G/B KEYBOARD 80-0907520-02-00 DIODES D212,D214-D21820-0000000-00-13DIODE SW 4NS DO35 IN4148 D21320-3262902-00-01DIODE ZENER BZX55 6.2V 1/2W 5% D21920-1001401-20-44DIODE 1N4004 replaced by 1N5399 D22020-3251902-00-01DIODE ZENER BZX55 5.1V 1

25、/2W 5% TRANSISTORS Q202-Q20621-0000010-00-46XTR NPN HEF 100 200MHz C1815Y CAPACITORS C203-C20645-0100054-52-57 CAP CER SMD 10pF 50V 5% C207,C21422-3100022-00-43 CAP ELEC SS 10uF 16V 20% C208-C21122-3470022-00-43 CAP ELEC SS 47uF 16V 20% C21222-3102012-00-28 CAP ELEC GR 1000uF 10V 20% C201, C202, C21

26、3, C215-C22045-0104056-57-57 CAP CER SMD 0.1uF 50V 20% C222, C241, C24245-0102055-55-57 CAP CER SMD 1nF 50V 10% C22345-023055-55-57CAP CER SMD 1nF 50V 10% IR D20126-0941380-00-00 IR RX 940nm 37.9KHz SHIELD ST FM-7138TE5 ICS U201(A/V-R)-U202(VFD) 27-1086400-04-87 I.C. MCU 8 BIT 64KROM 512 BYTE M6759

27、(sold as a pair) U20327-9630600-14-62 I.C. VFD DRIVER PT6306 U204-U20727-0540940-18-00 I.C. 8-STAGE BUS REGISTER HCF4094BM1 51 Reference No.Part No.Description U20827-0140510-18-00 I.C. MUX/DEMUX M74HC4051MIR U20927-0324591-18-00 IC OCTAL BUS TRANSCEIVER 74VHC245M U21027-2300225-00-00 I.C. EEPROM 2K

28、 BYTE 250nS M24C16-BN6 CRYSTAL X201-X20228-5221200-06-19CRYSTAL 22.1184MHZ 30ppm HC-49S IC SOCKET U201A34-6244000-00-79IC SOCKET PLCC 44 FT TACT SWITCHES S201-S21735-1001117-00-67SW TACT 1PIT 50mA/12V TM114BFJ ENCODER M20135-6001219-00-08ENCODER ROTATRY L=20mm W/O CLICK ECB16 VFD VFD41-4340100-00-13

29、 VFD 16-BT-93GNK RESISTORS R201-R207, R212, R213, R215, R219,44-0100220-51-00 RES SMD 10K OHM 5% R223-R224, R226-R227, R229, R231-R232 R209-R21044-0100520-51-00 RES SMD 10M OHM 5% R23344-0470220-51-00 RES SMD 47K OHM 5% R21644-0390020-51-00 RES SMD 390 OHM 5% R217-R21844-0150120-51-00 RES SMD 1.5K O

30、HM 5% R220, R236, R23744-0470120-51-00 RES SMD 4.7K OHM 5% R221, R23044-0220120-51-00 RES SMD 2.2K OHM 5% R22244-0220020-51-00 RES SMD 220 OHM 5% R23844-0120220-51-00 RES SMD 12K OHM 5% R241, R24244-0100020-51-00 RES SMD 100 OHM 5% LED BOARD 80-0907520-32-00 LED D21126-0012305-01-17 LED RED-GREEN 3R

31、GSW-1-A MAIN BOARD 80-0907520-00-00 DIODES D701-D710,D71320-1001401-20-44 DIODE 1N4004 replaced by 1N5399 D71120-3227002-00-47 DIODE ZENER BZX55 27V 1/2W 5% D712,D71420-0000000-00-13 DIODE SW 4NS DO35 IN4148 D71520-5004700-50-02 DIODE BRI 4A/70V RS402L D716-D71720-3951943-50-01 DIODE ZENER ZY5.1 2W

32、10% TRANSISTOR Q70121-0000140-00-11XTR NPN HFE 120 100MHz SS8050C 52 Reference No.Part No.Description CAPACITORS C701,C705-C706,C71622-3102032-00-28 CAP ELEC GR 1000uF 25V 20% C702,C719,C72322-3101022-00-43 CAP ELEC SS 100uF 16V 20% C70422-3332032-00-28 CAP ELEC GR 3300uF 25V 20% C707,C721,C72422-32

33、22032-00-34 CAP ELEC GS 2200uF 25V 20% C71022-3470052-00-43 CAP ELEC SS 47uF 50V 20% C711-C71322-3102052-00-28 CAP ELEC GR 1000uF 50V 20% REGULATORS U701,U704-U70627-3000501-17-14 I.C. VOLT REG 5V 1A NJM7805FA U70227-3001201-17-14 I.C. VOLT REG 12V 1A NJM7812 U70327-3101201-13-14 I.C. VOLT REG F NJM

34、7912 MULTI-CHANNEL BOARD 80-0907520-64-00 DIODE D60120-0000000-00-13 DIODE SW 4NS DO35 IN4148 TRANSISTORS Q601-Q60221-0000360-00-00 XTR NPN HFE200-700 30MHz 2SC2878A Q60321-0100390-70-14XTR PNP HFE 30 250MHz SPT DTA 114ESA Q60421-0000400-70-14XTR NPN HFE30 250MHz SPT DTC114ESA Q626,Q62821-0000120-70

35、-14XTR NPN HFE 68 30MHz SPT DTC144ES Q62721-0000450-70-14 XTR PNP 68 250MHz SPT DTA144ESA CAPACITORS C607,C611-C612, C619-C62222-3220022-00-43 CAP ELEC GS 22uF 16V 20% C623,C681-C683 C62622-3221022-00-43 CAP ELEC SS 220uF 16V 20% C677-C69022-3470022-00-43 CAP ELEC SS 47uF 16V 20% RESISTORS J601-J603

36、44-0000027-11-00RES SMD 0 OHM 5% ICS U60127-7891640-21-11I.C. ANALOG FUNCTION SW TC9164AN U60427-9496600-21-02 I.C. QUAD BILATERAL SW LC4966 U605-U60827-7055320-18-14 I.C. LOW NOISE OP-AMP NJM5532M RCA JACKS M60134-4060420-00-60RCA JACK 6 R-R-R/W-W-W GOLD RCA-653D-04 M60234-4020320-00-60RCA JACK 2 B

37、/B GOLD RS-253G-02 M60334-4040420-00-60RCA JACK 4 R-R/W-W GOLD RS-453G-04 53 Reference No.Part No.Description PRE-OUT BOARD 80-0907520-63-00 DIODES D602,D60420-3275902-00-01 DIODE ZENER BZX55 7.5V 1/2W 5% D605-D609, D611-D61520-0000000-00-13 DIODE SW 4NS DO35 IN4148 TRANSISTORS Q60521-0000140-00-11X

38、TR NPN HFE 120 100MHz SS8050C Q60721-0100131-00-11XTR PNP HFE 170 1.5A SS8550C Q608-Q61521-0000350-70-00 XTR NPN HFE200-700 30MHz SPT RN1241A Q616,Q618,Q620,Q622,Q62421-0100390-70-14XTR PNP HFE 30 250MHz SPT DTA 114ESA Q617,Q619,Q621,Q623,Q62521-0000400-70-14XTR NPN HFE30 250MHz SPT DTC114ESA CAPACI

39、TORS C613-C618, C624-C625, C635-C63622-3336052-00-43 CAP ELEC SS 3.3uF 50V 20% C627-C628, C633-C63422-3101022-00-43 CAP ELEC SS 100uF 16V 20% C679-C680, C691-C69222-3470022-00-43 CAP ELEC SS 47uF 16V 20% C637, C642, C647, C652, C657, C662,22-3100022-00-43 CAP ELEC SS 10uF 16V 20% C667,C672 C640, C64

40、5, C650,C655, C660, C665,22-3220022-00-43 CAP ELEC GS 22uF 16V 20% C670, C675 C684-C68822-3331022-00-28 CAP ELEC GR 330uF 16V 20% C693-C69422-4182203-10-10 CAP MYLAR KT-G 8.2nF 100V 10% C695-C69622-4115303-10-28CAP MYLAR MCC-R 15nF 100V 10% C697-C69822-4233402-00-31 CAP MPF 0.33uF 63V 5% RESISTORS J

41、6101-J610444-0000027-11-00RES SMD 0 OHM 5% INDUCTOR L60124-0101108-00-28IND CHOKE 100uH 10% ICS U602-U60327-7262446-10-01 I.C. VOL/TONE CONTROL M62446FP U609-U61227-7055320-18-14I.C. LOW NOISE OP-AMP NJM5532M RCA JACKS M60734-4040500-00-60RCA JACK 4 R-W/R-W GOLD RS-413G-08 M608,M61034-4020300-00-60R

42、CA JACK 2 B/B GOLD RS-213G-02 M60934-4040400-00-60RCA JACK 4 R-R/W-W GOLD RS-413G-04 POWER SUPPLY BOARD 80-0907520-01-00 AH and 80-0907520-01-01 C-version CAPACITORS C7632-1103470-35-45CAP CER ECKDRS 10nF 400VAC +80/-20% 54 Reference No.Part No.Description RESISTORS R75123-5228330-00-00 RES FUSIBLE

43、0.22 OHM 10% 1/2W R754*AH23-0395230-00-00 RES CF 3.9M OHM 5% 1/2W RELAY M751*C32-3112100-02-97RELAY 12VDC/10A SPST PCB OMI-SS-112LM M751*AH32-1012100-01-97 RELAY 12VDC/10A 1P1T DIODE D75120-0000000-00-13 DIODE SW 4NS D035 IN4148 D752-D75520-1001401-20-44 DIODE 1N4004 replaced by 1N5399 TRANSISTOR Q75121-0000010-00-46 XTR SS NPN HEF 100 200MHz TO-92 C1815Y LINE FILTER L75224-5103050-01-25 LINE FILTER 10mH ET-24 NC-F0092-1 FUSES & FUSE HOLDERS F751*AH33-0181001-01-88 FUSE TIME-LAG 8A/250VAC 5x20mm UL/CSA 5S F752*AH33-0111006-0