NAD-T762-avr-sm 维修电路原理图.pdf
《NAD-T762-avr-sm 维修电路原理图.pdf》由会员分享,可在线阅读,更多相关《NAD-T762-avr-sm 维修电路原理图.pdf(73页珍藏版)》请在收音机爱好者资料库上搜索。
1、NADSERVICE MANUALT 762T 762AV SURROUNDSOUND RECEIVERAV SURROUNDSOUND RECEIVERDRAFT DATE: Apr04RadioFans.CN 收音机爱 好者资料库2SAFETY INFORMATIONRadioFans.CN 收音机爱 好者资料库3SERVICE SAFETY PRECAUTIONS1. Replacing the fusesCAUTION:FOR CONTINUED PROTECTION AGAINST THE RISK OF FIRE REPLACE ONLY WITH SAME TYPE OFFUSE
2、.Reference DesignatorPart NumberDescriptionF751*AH33-0191001-00-88Fuse 10A 250V Time Lag 5x20 MM UL/CSAF751*C33-0181006-00-88Fuse 6.3A 250V Time Lag 5x20 MMUL/CSA/SEMKO/VDEF752*AH33-0111006-00-48Fuse 1.6A 250V Time Lag 5x20 MMUL/CSA/VDE/SEMKOF752*C33-0151006-00-48Fuse 800mA 250V Time Lag 5x20 MMUL/C
3、SA/VDE/SEMKONOTE: : 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 determinethat exposed parts are acceptably insulated from supply circuit.CONTENTSDESCRIPTIONPAGESP
4、ECIFICATIONS . 4 - 5REAR PANEL / FRONT PANEL VIEW . 6DISASSEMBLY INSTRUCTIONS . 7WIRING DIAGRAM . 8BLOCK DIAGRAM . 9ADJUSTMENT POINTS DIAGRAM / AMPLIFIER ADJUSTMENT . 10PCB LAYOUT .11 - 22SCHEMATIC DIAGRAM . 23 - 38IC BLOCK DIAGRAM . 39 - 47EXPLODED VIEW. 48EXPLODED VIEW PARTS LIST. 49 - 50ELECTRICA
5、L PARTS LIST . 51 - 65PACKING DIAGRAM . 66VERSION HISTORY . 67VERSION T762i PARTS LIST. 68Parts marked with the symbol are critical with regard to the risk of fire and electric shock.Replace only with parts recommended by the manufacturer.4SPECIFICATIONSPOWER AMPLIFIER SECTIONRated distortion(Rated
6、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/BS) 0.1 %Input Sensitivity(ref. 8 ohms, 1 kHz)220 20 mVS/N Ratio(A-wtd, 1kHz, 1 W, 8 ohm, SL/SR/BL) - 72 dBFrequency Response(20 Hz - 20 kHz)0 1.0 dBChannel Balance(1 dB to -40 dB, 1 kHz) 2
7、 dB(-41 dB to -50 dB, 1 kHz) 3 dBAudio muting at 1 kHz 55 dBSubwoofer out, 500 mV in (THD at 2 V O/P, 100 Hz) 0.5 %Crosstalk(500 mV input, 10 W, 1 kHz) -57 dBControlsBass(at 500 mV in, 1 W out, 100 Hz) 10 dB 2 dBTreble(at 500 mV in, 1 W out, 10 kHz) 10 dB 2 dBDOLBY DIGITAL SECTIONChannel Difference(
8、FL ref. Track 30) 1.2 dBFrequency Resporse at Dolby config.2SL Track 46 200 - 20 kHz 0.8 dBSR Track 47 200 - 20 kHz 0.8 dBC Track 44 200 - 20 kHz 0.8 dBHarmonic Distortion(1 W, Audio LPF, Dolby Congfig 1)FL Track 65 997 Hz 0.08 %FR Track 67 997 Hz 0.08 %SL Track 68 997 Hz 0.08 %SR Track 69 997 Hz 0.
9、08 %C Track 66 997 Hz 0.08 %S/N Ratio(31 for O/P 1 W, Track 35)CCIR / ARM 65 dBAudio LPF 70 dBA-wtd 70 dBChannel Separation(1 W, 20 kHz LPF)Track 65 997 Hz 60 dBDOLBY PRO LOGIC II SECTIONFrequency ResporseI/P mode : L, R: 1 V in, 1 W, Ch L/R40 Hz0 2.0 dB20 Hz0 2.0 dBI/P mode : L=R: 1 V in, 1 W, Ch /
10、L/R40 Hz0 2.0 dB Ch C20 kHz0 2.0 dBI/P mode : L=-R: 1 V in, 1 W, Ch SL/SR40 Hz0 2.0 dB20 kHz0 2.0 dBS/N Ratio (200 mV in, 1 W, A-WTD w/ 1 k termination)I/P mode : L, R: 1 kHz, Ch L/R 65 dBI/P mode : L=R: 1 kHz, Ch C 65 dBI/P mode : L=-R: 1 kHz, Ch SL/SR 65 dBTHD (2.2 V in, 1 W, w/ 80 kHz LPF, 1 kHz)
11、 0.2 %5DTS SECTIONOutput Level (Vol 0 dB): FL/FR/C/SL/SRTrack 61 kHz0.5 2.0 WChannel Difference (FL ref): FL/FR/C/SL/SRTrack 61 kHz 1.0 dBHarmonic Distortion (Audio Filter) : FL/FR/C/SL/SRTrack 10-14 1 kHz 0.08 %Frequency Response (20 Hz to 20 kHz)Track 26-30+2/-1.5Subwoofer Output Level1 kHz ref at
12、 pre-out (FL)Play Track 10, charge to 1510.5 1.5 dBAM TUNER SECTIONInput level is expressed as the reading in open circuitof 75-ohm source impedance signal generatorUsable sensitivity(999/1000 kHz) 30 dBuVS/N Ratio(5 mV in) 38 dBTHD(5 mV in) 3 %IF Rejection(450 kHz) 36 dBImage Rejection(F+2xIF) 28 d
13、BSelectivity 17 dBOutput170 20 mVLoop sensitivity(20 dB S/N)999/1000 kHz 66 dB603/600 kHz 66 dB1404/1400 kHz 66 dBFrequency Response(100 - 2.3 kHz, 5 mV) 6 dBFM TUNER SECTION*C*AHInput level is expressed as the reading in open circuitof 75-ohm source impedance signal generatorUsable sensitivity(98 M
14、Hz) 15 dBV 15 dBuvS/N Ratio(60 dB, IHF wtd)Mono 63 dB 63 dBStereo 63 dB 63 dBFrequency Response(20 Hz - 15 kHz, 60 dB)0 1.5 dB0 1.5 dBChannel Separation(60 dB)100 Hz 30 dB 30 dB1 k 38 dB 38 dB10 kHz 30 dB 30 dBAlternate Channel Selectivity (40 dB, 400 kHz) 60 dB 45 dBCapture Ratio(40 dB) 3 dB 3 dBAM
15、 Suppression (60 dB, 100% Mod. FM, 30% Mod. AM) 48 dB 48 dBImage Rejection(119.4 MHz) 65 dB I.F. Rejection(10.7 MHz) 78 dBPilot Suppression(98 MHz) 60 dB 60 dBTHD (60 dB, L=R 75 kHz for AH, 40 kHz Dev for C)Mono 0.25 % 0.25 %Stereo 0.35 % 0.35 %Auto-Search SensitivityOn 24 dB 24 dBOff 15 dB 15 dBRDS
16、 decode Sensitivity 26 dB PHYSICAL SPECIFICATIONSDimensions (Width x Height x Depth)435 x 167 x 382 mmNet Weight18.50 Kg (40.70 lbs)Shipping Weight22.20 Kg (48.84 lbs)6123456789212011191213141516171810 FRONT PANELREAR PANEL / FRONT PANEL VIEWREAR PANEL1.FM & AM ANTENNA2.MAIN IN / AUDIO PRE-OUTS /SUB
17、WOOFER OUT3.SOFT CLIPPING ON/OFF4.MONITOR OUT5.MS OUT (MULTISOURCE OUT)6.CD INPUT7.IR INPUT & OUTPUT8.12V TRIGGER INPUT & OUTPUT9.COMPONENT VIDEO IN &COMPONENT VIDEO OUT10.DIGITAL AUDIO INPUT &DIGITAL AUDIO OUTPUT11.RS-23212.SWITCHED AC OUTLETS13.AC POWER INLET14.SPEAKERS A & B15.DVD, SAT, VCR, VIDE
18、O 4 & VIDEO 516.TAPE INPUT & OUTPUT17.DISC INPUT18.7.1 CH. INPUTS1.POWER2.STAND-BY3.AM / FM4.FM MUTE / MODE5.DISPLAY6.MEMORY7.PRESET DOWN / UP8.SEARCH DOWN / UP9.VFL DISPLAY10.VOLUME (SETUP)11.VIDEO & AUDIO12.TAPE MONITOR13.DIGITAL AUDIO SELECTOR14.EXT. 7.115.SURROUND MODE16.LEVELS17.TONE CONTROLS18
19、.TONE DEFEAT19.SPEAKERS A & B20.VIDEO 6 INPUT21.PHONES7DISASSEMBLY INSTRUCTIONS1.Remove machine screws M4.0 x 8.0 (1 to 6) from the side panels.Remove tapping screw 3.0 x 8.0 (7 to 10) from the back panel.Refer to Figure No. 1.145678910232.Pull both sides of the TOP COVER slightly outwards 11 and ti
20、lt approx. 35 and then removein the direction as indicated by the arrow 12. Refer to Figure No. 2.Figure No. 1121111Figure No. 28THERM SENSNORUL VERSION :USE J758, J759CE VERSION :USE J760MOUNT ONCHASSIS GND82-0326135-07-98CABLE ASSY 3 WAYS #26 UL2877L=15036-2828201-71-XXFFC CABLE 28 PINSP1.25 L=200
21、mm36-2828201-71-XXFFC CABLE 28 PINS P1.25L=200mmCABLE ASSY 2 WAYS 2.5PUL1533 L=540mm82-0426135-03-XXCABLE ASSY 4 WAYS 2.5PUL2468 L=540mm36-1728201-71-XXFFC CABLE 17 PINS P1.25 L=200mm36-2028121-71-XXFFC CABLE 20 PINS P1.25 L=120mm82-1226135-05-XXCABLE ASSY 12 WAYS #26UL2877 L=50mm82-1026135-01-XXCAB
22、LE ASSY 10 WAYS #26 2.5P UL2877 L=540mmTO MAIN BOARD82-0826135-04-XXCABLE ASSY 8 WAYS #26 2.5P TO MAIN BOARDTO MAIN BOARD82-0426135-01-XXCABLE ASSY 4 WAYS #26 2.5PUL2877 L=500mm82-0626135-03-XXCABLE ASSY 6 WAYS #26 UL2877 L=480mm82-0826135-03-XXCABLE ASSY 8 WAYS #26 UL2877L=450mm82-0326135-08-XXCABL
23、E ASSY 3WAYS #26UL2854L=300mm82-0116435-02-XXCABLE ASSY 1 WAYS #16 UL1672BROWN L=400mm82-0116435-03-XXCABLE ASSY 1 WAYS #16 UL1672BLUE L=400mm82-1226135-00-XXCABLE ASSY 12 WAYS #26 2.5P UL2877 L=240mm82-0326135-04-XXCABLE ASSY 3 WAYS #26 2.5PUL2877 L=400mmFROM TRANSFORMER82-0626135-02-XXCABLE ASSY 6
24、 WAYS#26 2.5P UL1533L=350mm82-0626135-04-XXCABLE ASSY 6 WAYS#26 2.5P UL1533L=540mm82-0818235-01-XXCABLE ASSY 8 WAYS #183.96P UL1672 L=150mm82-1426135-00-XX2.5P UL2877 L=420mm82-0318235-01-XXCABLE ASSY 3 WAYS #183.96P UL1015 L=240mm82-0518235-05-XX, CABLE ASSY 5(R/BR/O)82-0518235-04-XX, CABLE ASSY 5W
25、AYS #18 3.96P UL1007L=250mm (V/BL/Y)82-0626135-05-XXCABLE ASSY 6WAYS #26 2.5PUL2877 L=120mm82-0418235-01-XXCABLE ASSY 4 WAYS #18 3.96PUL1007 L=280mm82-0418235-00-XXCABLE ASSY 4 WAYS #183.96P UL1007 L=120mm82-0318235-05-XXCABLE ASSY 3 WAYS#18 3.96P UL1015L=320mm82-0426135-00-XXCABLE ASSY 4 WAYS #26 2
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- NAD-T762-avr-sm 维修电路原理图 NAD T762 avr sm 维修 电路 原理图