NAD T760, Service Manual

Page 1: ...NAD SERVICE MANUAL T 760 SURROUND SOUND RECEIVER T 760S U R R O U N D SOUND RECEIVER...

Page 2: ...PACITOR BETWEEN A KNOWN GOOD EARTH GROUND WATER PIPE CONDUIT ETC AND THE EXPOSED METALLIC PARTS ONE AT A TIME MEASURE THE AC VOLTAGE ACROSS THE COMBINATION OF 1500 OHM RESISTOR AND 15 MFD CAPACITOR RE...

Page 3: ...ncluding Metal panels Input terminals Earphone jacks etc Electrostatically Sensitive ES Devices Some semiconductor solid state devices can be damaged easily by static electricity Such components commo...

Page 4: ...t to the customer make leakage current or resistance measurements to determine that exposed parts are acceptably insulated from the supply circuit Parts marked with the symbol are critical with regard...

Page 5: ...ble at 500mV in 1W out 10 kHz 9 dB SURROUND SECTION Channel separation I p mode L R 1V in 1 kHz Ch R L 45 dB o p at unexpected 1 kHz Ch C 35 dB I p mode L R 1V in 1 kHz Ch R L 28 dB o p at unexpected...

Page 6: ...15 dB Signal Noise Ratio Mono 72 dB 72 dB 60 dB IHF wtd Stereo 66 dB 66 dB Frequency Response 20 Hz 15 kHz 60 dB 0 1 5 dB 0 1 5 dB Channel Separation 60 dB 100 Hz 30 dB 30dB 1 kHz 38 dB 38 dB 10 kHz 3...

Page 7: ...UDIO INPUTS 7 AUDIO PRE OUTS SUBWOOFER OUT 8 MONITOR OUT 9 FRONT CENTER SURROUND SPEAKERS 10 SOFT CLIPPING 11 NAD LINK INPUT OUTPUT 12 SWITCHED POWER OUTLETS AH ONLY 13 AC POWER CORD 14 COOLING FAN 1...

Page 8: ...e panels Remove tapping screw 3 0 x 8 5 7 from the back panel Refer to Figure No 1 Figure No 1 2 Pull both sides of the TOP COVER slightly outwards 8 and tilt approx 35 and then remove in the directio...

Page 9: ...SURROUND AMPLIFIER PCB AC OUTLET PCB AH ONLY J708B M001 C834 TRIGGER PCB FRONT AMPLIFIER PCB AC3 DTS DSP PCB VOLUME PCB POWER SWITCH PCB 8 7 WIRING DIAGRAM 7012 5050 0...

Page 10: ...ITCH TUNER SUBWOOFER LA1837 LC7218 LC72723 VIDEO SWITCH BA7625 4cs DAC CS4340 3pcs 6ch tot 6CH VOLUME M62447SP 5CH POWER AMPLIFIER MCU LC87F65C8A VFL DISPLAY NAD LINK IN OUT REMOTE SENSOR KEY MATRIX M...

Page 11: ...to JP802 on Surround Amplifier Board R868 2mV 0 2mV PCB N091C AMP2 INSTRUMENT SETUP 1 FM MEASUREMENT Fig 1 Fig 2 2 RDS MEASUREMENT Fig 3 3 AM MEASUREMENT Fig 4 FM SIGNAL GENERATOR ANTENNA TERMINAL OU...

Page 12: ...z devi 65dBf 60dB 99 0MHz Ext mod 65dBf 60dB FM SG output Stereo mod ulator output Tuning frequency 99 0MHz 99 0MHz Channel L or R 1kHz 99 0MHz Ext mod 65dBf 60dB 99 0MHz Ext mod 65dBf 60dB RDS 2 MOD...

Page 13: ...13 PCB LAYOUT SPEAKER BOARD DIGITAL BOARD PRIMARY BOARD SECONDARY BOARD TONE BOARD...

Page 14: ...14 PSU BOARD S VIDEO BOARD LED BOARD AC OUTLET BOARD...

Page 15: ...15 AC3 DTS BOARD COMPONENT SIDE AC3 DTS BOARD SOLDER SIDE...

Page 16: ...16 MULTI CHANNEL BOARD MAIN BOARD...

Page 17: ...17 KEYBOARD COMPONENT SIDE KEYBOARD SOLDER SIDE...

Page 18: ...18 TRIGGER BOARD LOAD BOARD FRONT AMPLIFIER BOARD VIDEO 5 BOARD VOLUME BOARD POWER SWITCH BOARD...

Page 19: ...19 SURROUND AMPLIFIER BOARD TUNER BOARD VIDEO BOARD AUDIO BOARD...

Page 20: ...20 SCHEMATIC DIAGRAM TO KEY J204A TO FRONT AMP J504A TO SEC J702A LOAD NOTE 1 RESISTORS ARE CARBON FILM 5 1 8W UNLESS OTHERWISE SPECIFIED 2 CERAMIC CAPACITORS ARE 50V 80 20 UNLESS OTHERWISE SPECIFIED...

Page 21: ...22 21 VOLUME PCB LED PCB KEY NOTE 1 RESISTORS ARE CARBON FILM 5 1 8W UNLESS OTHERWISE SPECIFIED 2 CERAMIC CAPACITORS ARE 50V 80 20 UNLESS OTHERWISE SPECIFIED...

Page 22: ...23 24 AC3 DTS NOTE 1 RESISTORS ARE CARBON FILM 5 1 8W UNLESS OTHERWISE SPECIFIED 2 CERAMIC CAPACITORS ARE 50V 10 UNLESS OTHERWISE SPECIFIED...

Page 23: ...25 TO AC3 J604B TO FRONT AMP J502A TO VIDEO J708B MAIN BOARD NOTE 1 RESISTORS ARE CARBON FILM 5 1 10W UNLESS OTHERWISE SPECIFIED MF METAL FILM 2 CERAMIC CAPACITORS ARE 50V 10 UNLESS OTHERWISE SPECIFI...

Page 24: ...27 28 MULTI CHANNEL NOTE 1 RESISTORS ARE CARBON FILM 5 1 8W UNLESS OTHERWISE SPECIFIED 2 CERAMIC CAPACITORS ARE 50V 10 UNLESS OTHERWISE SPECIFIED...

Page 25: ...CC CC CC CC CC CC MF MF MF MF MF MF MF MF MF MF MF MF MF MF MF MF MF MF MF FRONT AMPLIFIER NOTE 1 RESISTORS ARE CARBON FILM 5 1 8W UNLESS OTHERWISE SPECIFIED CC CERAMIC CASE MF METAL FILM 2 COMPONENT...

Page 26: ...10u 16V MF MF CC CC CC CC CC CC CC CC CC CC MF MF MF MF MF MF MF MF MF MF MF MF SURROUND AMPLIFIER NOTE 1 RESISTORS ARE CARBON FILM 5 1 8W UNLESS OTHERWISE SPECIFIED CC CERAMIC CASE MF METAL FILM 2 CE...

Page 27: ...34 33 TUNER NOTE 1 RESISTORS ARE CARBON FILM 5 1 8W UNLESS OTHERWISE SPECIFIED 2 CERAMIC CAPACITORS ARE 50V 10 UNLESS OTHERWISE SPECIFIED...

Page 28: ...35 36 S VIDEO NOTE 1 RESISTORS ARE CARBON FILM 5 1 8W UNLESS OTHERWISE SPECIFIED 2 CERAMIC CAPACITORS ARE 50V 10 UNLESS OTHERWISE SPECIFIED...

Page 29: ...37 AUDIO NOTE 1 RESISTORS ARE CARBON FILM 5 1 8W UNLESS OTHERWISE SPECIFIED 2 CERAMIC CAPACITORS ARE 50V 10 UNLESS OTHERWISE SPECIFIED...

Page 30: ...T AMP J501A AH ONLY F POWER SUPPLY UNIT NOTE 1 RESISTORS ARE CARBON FILM 5 1W UNLESS OTHERWISE SPECIFIED F FUSIBLE 2 CERAMIC CAPACITORS ARE 50V 10 UNLESS OTHERWISE SPECIFIED 3 COMPONENTS MARKED ARE SA...

Page 31: ...1C1 2C2 12 6 1C0 2C1 11 7 1Y 2C0 10 8 GND 2Y 9 4 1Y 7 2Y 9 3Y 12 4Y 15 1 G 13 4B 10 3B 6 2B 5 2A 3 1B 2 1A 11 3A 14 4A A B 1 A B VCC 16 2 1A G 15 3 1B 4A 14 4 1Y 4B 13 5 2A 4Y 12 6 2B 3A 11 7 2Y 3B 1...

Page 32: ...1 3 XMT958 AUDATA2 AUDATA1 AUDATA0 LRCLK SCLK MCLK DC DD EXTMEM GPIO8 ABOOT INTREQ A1 SCDIN A0 SCCLK SCDIO SCDOUT PSEL GPIO9 WR DS EMWR GPIO10 RD R W EMOE GPIO11 CS DATA7 0 EMAD7 0 GPIO7 0 RESET Digi...

Page 33: ...8 14 1 11 12 26 23 24 18 17 19 21 20 22 8 7 AC3 BOARD U110 CS8414 AC3 BOARD U111 U113 CS4340 AC3 BOARD U115 U117 U120 74HC74 RST 1 3 8 16 4 2 7 6 5 15 12 LRCK SDATA DIF0 DIF1 MCLK MUTEC DEM0 De emphas...

Page 34: ...4 6 S5 23 S5 7 S6 22 S6 8 S7 21 S7 9 S8 20 S8 10 S9 19 S9 11 S10 18 S10 12 S11 13 GND 14 CK 15 DATA 16 RESISTER 17 S11 L ch 10bit Latch Circuit LEVEL SHIFT SHIFT RESISTER CIRCUIT R ch 10bit Latch Circ...

Page 35: ...LUME VOLUME VOLUME VOLUME MCU I F O P PORT 1 2 L S1 VSS SHIFT REGISTER LEVEL SHIFTER LEVEL SHIFTER LATCH CIRCUIT LATCH CIRCUIT 14 GND 28 VDD 27 R S1 3 L S2 26 R S2 4 L S3 25 R S3 5 L S4 24 R S4 6 L CO...

Page 36: ...Control Line Control Counter Flashing Reversal Control Register Flashing Reversal Control Circuit Display Control Register RAM Write Address Counter Display RAM Decoder Decoder Font RAM Shift Register...

Page 37: ...19 18 17 16 ALC AM OSC AM MIX AM RF AMP REG AGC AM IF AM S METER TUNING DRIVE STEREO DRIVE VCC V CC AM FM IF BUFF FM S METER S CURVE AM IF FM DET GND FM IF INPUT AM MIXER OUTPUT FM IF INPUT BYPASS AM...

Page 38: ...16 Vssa 4 MPXIN 2 TEST 7 TEST 57kHz BPF SCF SMOOTHING FILTER OSC CLK 4 332MHz 9 XIN 8 XOUT RDS ID DETECT RAM 128bits 21 22 16 15 20 23 8 7 17 14 13 12 11 10 9 5 4 3 2 18 19 24 1 6 XIN FMIN AMIN CE DI...

Page 39: ...D CC 25V 0 1 F20 0805 1 2x2 0 C139 157D 227M 5 KW CE 16V 220 F 20 RL 6x12 C140 150E 104M J BD CC 25V 0 1 F20 0805 1 2x2 0 C141 157D 106M 5 GM CE 16V 10 F 20 RL 4x7 C142 150E 104M J BD CC 25V 0 1 F20 0...

Page 40: ...5A WAFER J101A 2102 101S 004 WAFER 10P P2 5 ST COULOMB CONNECTORS J203B 2101 1581 0 FLEXIBLE CONN 35P P1 25 SIDE ENTRY J601B 2102 121S 004 12P ST WAFER P 2 5 COULOMB J604B 2102 031S 004 3 PIN ST WAFE...

Page 41: ...6 R189 4720 000J J RMG 1 10W 0R 5 0805 R190 R192 4720 104J J RMG 1 10W 100K 5 0805 R193 4720 000J J RMG 1 10W 0R 5 0805 R194 4720 335J J RMG 1 10W 3 3M 5 0805 ICs U101 3131 3980 0 IC 74HC153 QUAD 4 IN...

Page 42: ...3 153F 104J 5 QUN CM 50V 0 1 F RL 9x11 POLYESTER C561 C562 8910 0078 0 CE 63V 10000 F 20 RL 35x40 C563 C565 157F 106M 5 GM CE 50V 10 F 20 RL 4x7 C566 C567 157D 476M 5 IU CE 16V 47 F 20 RL 5x11 C581 15...

Page 43: ...Q581 Q582 4860 0190 5 TR 2SC1845 F E RL Q583 4850 992F 5 TR 2SA992 HFE 300 600 Q591 Q592 485C 123J 5 TR DTC123JSA ROHM RESISTORS R501 474B R10K 5 02 RWR 5W 0 1Rx2 10 RL R502 4701 221J C RCF 1 8W 220R...

Page 44: ...1 8W 18K 5 ATS R5102 4701 332J C RCF 1 8W 3 3K 5 ATS R5103 4705 331J 2 RCF 1 4W 330R 5 AT R5104 R5105 4717 2R2J 2 RMF 1 2W 2 2R 5 AT R5106 4701 272J C RCF 1 8W 2 7K 5 ATS R5107 474B R22K 5 02 RWR 5W...

Page 45: ...24VDC 125VA 3A OSA SS 224DM3 OEG TRANSISTORS Q801 Q806 4860 0190 5 TR 2SC1845 F E RL Q807 Q808 4860 1590 5 TR 2SC1740S R HFE180 390 Q809 Q812 485A 949O 5 TR 2SA949 O HFE 70 140 TOSHIBA Q813 Q814 485C...

Page 46: ...3171 0 01 DPDT SLIDE SW SK 22F28 G9TS CAPACITORS C301 C302 150F 103K 2 FC CC 50V 0 01 F 10 AT 3 5x2 C303 157D 107M 5 IU CE 16V 100 F 20 RL 5x11 C304 150F 103K 2 FC CC 50V 0 01 F 10 AT 3 5x2 C305 C306...

Page 47: ...910C DIG PCB ASSY DIGITAL N091XC TOS LINK 1602 4811 F32R 3 LIGHT Rx UNIT GPIF32R SHARP JACKS 1603 1604 2113 1806 0 1P RCA JACK BK GOLD W SHIELD 1605 2113 1121 0 2P RCA JACK Y Y AU HSP 242V 22 CAPACITO...

Page 48: ...220K M COIL 22 H 10 AL BL7 SWITCHES M201 M217 5200 3538 0 SWITCH TACT SKHHBY 7mm HIGH SENSOR M218 4814 3TE2 3 IR SENSOR PIC 12043TE2 CRYSTAL M219 2300 3150 0 CRYSTAL 10MHZ 30PPM LOAD CAP 22P HC49U TR...

Page 49: ...IDGE RS804M D703 4804 1480 C DIODE 1N4148 ATS WAFERS J204B 2102 061R 004 WAFER 6 PIN P2 5 J504B J702B 2102 061S 004 6P ST WAFER P 2 5 COULOMB TRANSISTORS M701 M702 4860 5270 5 TR TYN412 400V 12A THYRI...

Page 50: ...DIODE 1N5393 200V 1 5A AT D720 D721 4804 0040 1 DIODE 1N4004 AL D722 4837 27V0 2 DZ 1 2W 27V 26 2 27 6 AT D731 D734 4804 1480 C DIODE 1N4148 ATS J7159 J160 4804 0010 2 DIODE 1N4001 AT WAFERS J206B 21...

Page 51: ...5 IU CE 16V 47 F 20 RL 5x11 C660 C663 153F 101K 5 MKN CM 100pF 50V RL 7x6 POLYESTER C664 C667 150F 101J 5 IF CC 50V 100pF 5 RL 5x3 5 C668 C669 157D 106M 5 GM CE 16V 10 F 20 RL 4x7 C670 C671 153F 103J...

Page 52: ...R654 4701 103J C RCF 1 8W 10K 5 ATS R655 4701 183J C RCF 1 8W 18K 5 ATS R656 R657 4701 103J C RCF 1 8W 10K 5 ATS R658 4701 102J C RCF 1 8W 1K 5 ATS R659 4701 471J C RCF 1 8W 470R 5 ATS R660 R661 4701...

Page 53: ...S 112DM OEG TRANSISTOR Q751 485C 123J 5 TR DTC123JSA ROHM RESISTORS R754 AH 4707 8R2J 2 RCF 1 2W 8 2R 5 AT R754 C 4717 8R2J 2 F RMF 1 2W 8 2R 5 AL R758 AH 4717 335J 2 S RMF 1 2W 3 3M 5 AT UL APPROVED...

Page 54: ...77M 5 OU CE 10V 470 F 20 RL 8x11 C408 C413 157F 225M 5 GM CE 50V 2 2 F 20 RL 4x7 C414 157D 476M 5 IU CE 16V 47 F 20 RL 5x11 C415 157C 477M 5 OU CE 10V 470 F 20 RL 8x11 C416 C417 157F 225M 5 GM CE 50V...

Page 55: ...0770 5 TR 2SC2878 APB RL Q405 485A 933S 5 TR 2SA933S HFE 120 560 ROHM Q406 485C 123J 5 TR DTC123JSA ROHM Q407 485A 933S 5 TR 2SA933S HFE 120 560 ROHM Q408 4860 0770 5 TR 2SC2878 APB RL Q409 Q411 485A...

Page 56: ...7K 5 ATS R463 4701 121J C RCF 1 8W 120R 5 ATS R467 4701 102J C RCF 1 8W 1K 5 ATS R468 4701 104J C RCF 1 8W 100K 5 ATS R469 4701 102J C RCF 1 8W 1K 5 ATS R473 4701 682J C RCF 1 8W 6 8K 5 ATS R474 4701...

Page 57: ...01J 5 IF CC 50V 100pF 5 RL 5x3 5 C946 157F 105M 5 GM CE 50V 1 F 20 RL 4x7 C947 157F 474M 5 GM CE 50V 0 47 F 20 RL 4x7 C948 157F 105M 5 GM CE 50V 1 F 20 RL 4x7 C949 C950 150F 223Z 5 UG CC 50V 0 022 F 8...

Page 58: ...172D3G1 CERAMIC FILTERS M902 2701 0010 1 CF10 7 30 SFE10 7MA5 A M903 C 2701 0010 1 CF10 7 30 SFE10 7MA5 A M904 2701 0010 1 CF10 7 30 SFE10 7MA5 A M911 2701 0680 0 CF 450 1 SFZ450JL3 MURATA CRYSTALS M9...

Page 59: ...22J C RCF 1 8W 8 2K 5 ATS R944 4701 104J C RCF 1 8W 100K 5 ATS R945 4701 392J C RCF 1 8W 3 9K 5 ATS R946 4701 332J C RCF 1 8W 3 3K 5 ATS R947 R948 4701 103J C RCF 1 8W 10K 5 ATS R949 4701 332J C RCF 1...

Page 60: ...ET PCB PCB 10P P2 0 TRANSISTORS Q428 Q434 Q435 485A 933S 5 TR 2SA933S HFE 120 560 ROHM RESISTORS R439 4701 471J C RCF 1 8W 470R 5 ATS R460 R461 4701 121J C RCF 1 8W 120R 5 ATS R464 R466 4701 680J C RC...

Page 61: ...10 AT 3 2x2 2 WAFERS M001 2102 021S 005 WAFER 2P ST P 2 5 COULS M001C 7702 1250 2005 CN ASSY 2P P2 5 L 250 JACK M002 2113 1179 0 PHONE JACK D3 5 BK JY 3537 01 140 RESISTORS R001 4701 472J C RCF 1 8W 4...

Page 62: ...54 0154 0148 0148 0148 0148 0148 0148 0162 0162 0146 0148 0148 0148 0147 0148 0148 0148 0148 0148 0148 0148 0148 0180 0181 0183 0182 AH VERSION C VERSION 0148 0134 0134 0133 0133 0136 0137 0200 0108 0...

Page 63: ...1 0122 2444 2101 0 INPUT BUTTON 4 0123 4154 0411 0 BEZEL DUO 2 0124 4134 9081 0 VOLUME KNOB SKIN 1 0125 4154 0341 0 VOLUME KNOB CORE 1 0126 4152 4631 0 RUBBER FOOT 14MM HIGH 4 0127 4152 4641 0 CUSHIO...

Page 64: ...0550 SPRING WASHER 6 0193 2900 3008 3000 SCREW M3X8 PM BZ 2 0194 2954 3006 3000 3X6MM B TITL 2 0200 AH 2113 1662 0 AC INLET 2 PIN 15A 125VAC 2 0205 4152 3291 1 FOAM 6X4X1 5T MM 1 0208 4152 1161 0 FOAM...

Page 65: ...E CONTROL HANDSET 1 42 AH 2103 6101 0 RF CONNECTOR PLUG 1 42 C 2103 6201 0 RF CONNECTOR PLUG 1 43 1 4301 4108 1 OWNER S MANUAL GB F D 1 43 2 4301 4109 1 OWNER S MANUAL E I S P 1 44 1497 1062 0 MANUAL...