NAD L 76 Service Manual Download Page 10 | Manualshive

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NAD L 76 Service Manual Download Page 10

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BLOCK DIAGRAM

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Summary of Contents for L 76

Page 1: ...SERVICE MANUAL L76 A V RECEIVER L76A V RECEIVER ...

Page 2: ...UCT SAFETY SERVICING GUIDELINES 1 4 SERVICING PRECAUTIONS 1 5 General Servicing Precautions Insulation checking prodedure Electrostatically Sensitive Devices SPECIFICATIONS 1 6 LOCATION OF CUSTOMER CONTROLS 1 7 1 8 EXPLODED VIEW 1 9 1 10 ...

Page 3: ... CAPACITOR 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 REVERSE THE AC PLUG AND REPEAT AC VOLTAGE MEASUREMENTS FOR EACH EXPOSED METALLIC PART VOLTAGE MEASURE MUST NOT EXCEED 75 VOLTS R M S THIS CORRESPONDS TO 0 5 MILLIAMP AC ANY VALUE EXCEEDING THIS LIMIT...

Page 4: ...s including 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 commonly are called Electrostatically Sensitive ES Devices Examples of typical Es devices are integrated circuits and some field effect transistors and semiconductor chip components The following techni...

Page 5: ...quency 32 kHz 44 1 kHz 48 kHz DIGITAL Input Level Impedance COAXIAL 0 5 Vp p 75 ohms OPTICAL 15 dBm 21 dBm Video Section Input Sensitivity Impedance 1 0 Vp p 75 ohms Output Level Impedance 1 0 Vp p 75 ohms LINE means TAPE AUX VIDEO 1 VIDEO 2 DVD Improvements may result in specifications and features changing without notice lllustrations may differ slightly from production models FM Tuner Section W...

Page 6: ...lay PHONES BASS TREBLE Tone Controls MASTER VOLUME Control BALANCE Control SOURCE SELECTOR Control AUDIO Signal jacks VIDEO Signal jacks PRE OUT jack DIGITAL OUT jacks SPEAKER terminals Dolby Digital DTS PCM DIGITAL IN jacks S VIDEO Signal jacks FRONT PANEL REAR PANEL ...

Page 7: ...AR button L56 5 REPEAT button L56 6 INPUT SOURCE SELECTOR buttons L76 NUMERIC buttons L76 L56 7 OSD ON OFF buttons L76 DVD SET UP button L56 8 MUTE button L76 9 PRESET UP DOWN buttons L76 SLOW buttons L56 10 TEST TONE button L76 ZOOM button L56 11 SURROUND MODE button L76 RANDOM button L56 12 VOLUME UP DOWN buttons L76 13 AM button L76 TITLE button L56 14 FM button L76 MENU button L56 15 ARROW but...

Page 8: ...62C37 KGK1A063YA KGK2A064WA KGK1A064XA CGU1A244A8 CMY1A115 1 1 1 1 1 2 1 3 1 2 1 COVER FAN CMH1A117 PCB AUDIO INPUT KNOB POWER PANEL SUB FAN KNOB DISPLAY WINDOW SENSOR CDD1A013 CGW1A299 1 1 CGU1A245A10 CBT1A756M7K102 CBT1A745M7K102 1 3 1 CGL1A188 CHE170 SINK HEAT R CMY1A116 HOLDER PCB 1 AC CORD 4 SCREW CTW3 14J 61 65 63 64 62 SCREW SCREW SCREW CTB4 6J CTW3 8J CTW3 16J 5 4 2 53 57 59 60 58 55 56 54...

Page 9: ...2 22 2 23 1 BLOCK DIAGRAM ...

Page 10: ...2 24 2 25 BLOCK DIAGRAM ...

Page 11: ...2 26 2 27 2 WIRING DIAGRAM ...

Page 12: ...2 28 2 29 3 SCHEMATIC DIAGRAMS MAIN SCHEMATIC DIAGRAMS ...

Page 13: ...2 30 2 31 u COM GUIDE CIRCUIT DIAGRAM ...

Page 14: ...2 32 2 33 INPUT SCHEMATIC DIAGRAM ...

Page 15: ...AMP SPEAKER SUB TRANS AC OUTLET CIRCUIT DIAGRAM 2 34 2 35 ...

Page 16: ...2 36 2 37 SURROUND CIRCUIT DIAGRAM ...

Page 17: ...2 38 2 39 SURROUND CIRCUIT DIAGRAM ...

Page 18: ... 18 6 IC84 NJU3713G EXPANDOR 2 18 7 IC34 TC9164AF FUNCTION 2 19 8 IC11 TC9163AF FUNCTION 2 19 9 IC16 TC9482F ELECTRONIC VOLUME 2 20 10 IC31 74HCU04AFN HEX INVERTOR 2 20 11 TRANSISTOR REGULATOR IC BLOCK DIAGRAM 2 21 DIAGRAMS 2 22 1 BLOCK DIAGRAM 2 22 2 WIRING DIAGRAM 2 26 3 SCHEMATIC DIAGRAM 2 28 MAIN 2 28 U COM GUIDE 2 30 INPUT 2 32 AMP SPEAKER 2 34 SURROUND 2 36 4 PRINTED CIRCUIT BOARDS 2 40 MAIN...

Page 19: ...e ENCODER UP DOWN control port Reset Input Port L 8MHz Cystal Connection Port Device GND Port Back Up Mode Control Port L Function Selector ENCODER Control port Interrupt Reguest Input Port CS493264 CL Data Input port ODS IC ANAM2024V Chip Selector Port Surr OSD CLK Output port Chip Selector port for CS493264 CL Surr OSD Data Output Port Chip Selector Port for AK4586VQ Reset Initial Clear Port for...

Page 20: ... XOUT VSS INTS STOP P20 INT3 TC3 P30 TC4 P31 SCK P32 SI P33 SO P34 HSCK P35 P36 HSO P37 P66 G9 P65 G10 P64 G11 P63 G12 P62 G13 P61 G14 P60 G15 VDD P07 P06 P05 P04 P03 P02 P01 P00 BLOCK DIAGRAM VDD P9 VFT drive circuit automatic display Key scan control Program counter Register banks Stack Pointer P S W Interrupt Controller System Controller Standby Controller Timing Generator High frequ Low frequ ...

Page 21: ... LRCK I PCM audio input sample rate clock pin 27 CMPDAT SDI I PCM audio data input number 2 pin 28 CMPCLK BICK I PCM audio input bit clock pin 29 CREQ LRCK I PCM audio input sample rate clock pin 30 CLKIN XIN I Master clock input used external clock 31 CLKSEL GND I DSP clock mode select pin connect the GND 32 FILT1 Connects to an external filter for the on chip phase locked loop 33 FILT1 Connects ...

Page 22: ...Audio Input Interface Framer Shifter Input Buffer Controller PIN ASSIGNMENT IC35 CS493264 CL BlOCK DIAGRAM IC35 CS493264 CL VD1 DGND1 AUDATA3 XMT958 WR DS EMWR GPIO10 RD R W EMOE GPIO11 A1 SCDIN A0 SCCLK DATA7 EMAD7 GPIO7 CS493XX CL 44 pin PLCC Top View DATA6 EMAD6 GPIO6 DATA5 EMAD5 GPIO5 DATA4 EMAD4 GPIO4 DATA3 EMAD3 GPIO3 DATA2 EMAD2 GPIO2 DATA1 EMAD1 GPIO1 DATA0 EMAD0 GPIO0 VD2 DGND2 CS SCDIO S...

Page 23: ...2 16 PIN FUNCTION IC34 AK4586VQ ...

Page 24: ...X2 RX3 RX4 SDTO BICK LRCK SDTI1 SDTI2 SDTI3 CSN CCLK CDTI CDTO MCLK BICK SDOUT LRCK SDIN1 SDIN2 SDIN3 DAIF Decoder DEM XTO PDN 1 XTI EXTCLK 44 2 DVDD 3 DVSS 4 TVDD 5 TX 6 MCKO 7 LRCK 8 BICK 9 SDTO 10 SDTI1 11 RX1 43 I2C 42 41 40 RX3 39 SLAVE 38 RX4 37 PVSS 36 R 35 PVDD 34 SDTI2 12 SDTI3 13 INT0 14 INT1 15 CAD1 CDTO 16 17 SCL CCLK 18 CAD0 CSN 19 DZF2 OVF 20 AVSS 21 AVDD 22 33 32 31 30 29 28 27 26 2...

Page 25: ...20K 20K 20K 20K 20K 75 dirver 75 dirver 1 2 3 4 8 PIN FUNCITON 1 A OUTPUT 2 A INPUT 3 A INPUT 4 V 5 B INPUT 6 B INPUT 7 B OUTPUT 8 V A B 7 6 5 OPA2134UA NJM 2068MD NJU3713G EXPANDOR IC 84 OP AMP IC12 15 37 42 82 PIN CONFIGURATION BLOCK DIAGRAM NJM2296M VIDEO SW IC21 22 23 Shift Circuit Latch Circuit Controller Circuit P1 P2 P3 P4 P5 P11 P12 CLK DATA 10 11 12 13 14 15 16 17 1 8 9 STB CLR ...

Page 26: ...M ST R S R S R S 5 R S 1 R COM R S 2 R COM R S R COM DATA CK 7 R S LEVEL SHIFTER 2 1 2 4 8 4 1 2 4 8 4 1 3 4 5 6 7 8 9 10 14 28 11 12 13 27 26 25 24 23 22 21 20 19 18 17 16 15 LATCH CIRCUIT SHIFT REGISTER LEVEL SHIFTER LATCH CIRCUIT L S R S Vss GND VDD L S 1 L COM 3 L S L S 5 L S 2 L COM 6 L S L S 7 L S L COM ST R S 1 R COM 3 R S R S 2 R COM 5 R S 6 R S R S R COM DATA CK 7 R S TC9164AF FUNCTION IC...

Page 27: ...NC VSS VDD TEST L INA 4 5 L A GNDA L OUTB 6 L INB 7 8 L A GNDB L OUTC 9 L INC 10 12 CS1 GND 13 CK 14 L A GNDC 11 26 R OUTA R INA 25 24 R A GNDA R OUTB Same as L ch Circuit 23 R INB 22 21 R A GNDB R OUTC 20 R INC 19 17 CS2 STB 16 DATA 15 R A GNDC 18 1 28 27 TC9482F ELECTRONIC VOLUME IC16 PIN ASSIGNMENT 74HCU04AFN IC40 1 2 3 4 5 6 7 1A 1Y 2A 2Y 3A 3Y GND 6A 6Y 5A 5Y 4A 4Y Vcc 14 13 12 11 10 9 8 TC74...

Page 28: ...5Y DTC144TS KSD811Y DTA144ES DTC114YS DTA144TS KSC34230 1 Emitter 2 Collector 3 Base TO 126 TO 92 123 123 123 1 Base 2 Collector 3 Emitter KSA614Y 2SB1186AE KSD288Y 2SD1763AE TO 220 123 1 DC IN 2 GND 3 DC OUT MC7815C MC7805C TO 220 123 1 DC IN 2 DC OUT 3 GND MC7915C TO 220 123 1 Base 2 Collector 3 Emitter 2SD3856 2SA1492 2SC4468 2SA1695 KSA916Y KSC2316Y 1 Emitter 2 Collector 3 Base TO 3P TO 92L 12...

Page 29: ...MICROFARAD µF P 10 6 µF RESISTORS AND CAPACITORS MAIN B D CUP11395 1 2 3 PCB1 CUP11395 1 PCB MAIN L76 C271 HCEA1HH1R0T CAP ELECT 1 0UF 50V C272 C273 CCCT1H220JC CAP CERAMIC 22PF 50V J C274 CCKT1H101KB CAP CERAMIC 100PF 50 K C275 HCEA1HHR47T CAP ELECT 0 47UF 50V C276 HCEA1AH471T CAP ELECT 470UF 10V C277 HCEA1EH470T CAP ELECT 47UF 25V C278 CCCT1H820JC CAP CERAMIC 82PF 50V J C279 CCCT1H560JC CAP CERA...

Page 30: ...52T RES CARBON 1 5K OHM 1 5W J R283 CRD20TJ682T RES CARBON 6 8K OHM 1 5W J R284 CRD20TJ102T RES CARBON 1K OHM 1 5W J R285 CRD20TJ104T RES CARBON 100K OHM 1 5W J R286 CRD20TJ102T RES CARBON 1K OHM 1 5W J R780 CRD20TJ103T RES CARBON 10K OHM 1 5W J R784 R788 CRD20TJ683T RES CARBON 68K OHM 1 5W J R789 CRD20TJ562T RES CARBON 5 6K OHM 1 5W J R790 CRD20TJ101T RES CARBON 100K OHM 1 5W J R791 CRD20TJ102T R...

Page 31: ...ON 10K OHM 1 4W J D901 BVDGBJ1504 DIODE BRIDGE GBJ1504 PCB3 CUP11395 3 PCB TRANS C908 C911 KCFEJ124JBT CAP FILM 0 12UF 63VJ C951 HCEA1CH102E CAP ELECT 1000UF 16UF C953 HCEA1CH101T CAP ELECT 100UF 16V C954 HCEA1HH470T CAP ELECT 47UF 50V C955 HCEA1HH4R7T CAP ELECT 4 7UF 50V C952 C956 HCEA1HH100T CAP ELECT 10UF 50V D902 D909 KVD1N4003ST DIODE 1N4003 D913 D951 KVD1N4003ST DIODE 1N4003 D952 HVDMTZJ6 2B...

Page 32: ...CEA1HKS1R0T CAP ELECT 1UF 50V C856 HCBS1H821KBT CAP CERAMIC 820PF 50V K C857 C858 HCBS1H223ZFT CAP CERAMIC 0 022UF 50V Z C865 HCBS1H221KBT CAP CERAMIC 220PF 50V K C866 HCBS1H561KBT CAP CERAMIC 560PF 50V K C867 HCBS1H223ZFT CAP CERAMIC 0 022UF 50V Z C868 C869 HCBS1H181KBT CAP CERAMIC 180PF 50V K C870 HCEA1VKS100T CAP ELECT 10UF 35V D801 D806 BVDSEL2E10CFT L E D BLUE D807 D810 HVD1SS133MT DIODE 1SS1...

Page 33: ...CARBON 10K OHM 1 5W J R887 CRD20TJ102T RES CARBON 1K OHM 1 5W J R888 R889 CRD20TJ103T RES CARBON 10K OHM 1 5W J R896 R897 CRD20TJ122T RES CARBON 1 2K OHM 1 5W J R898 R899 CRD20TJ102T RES CARBON 1K OHM 1 5W J S801 S804 CST1A012ZT SW TACT S809 S814 KST1A012ZT SW TACT SKHV10910G BN96 CWB1C006230BM WIRE ASS Y CN81 BJP26GA133ZK FLEXIBLE CONNECTOR PLUG TMC D26P A1 CN82 BJP10GA133ZK FLEXIBLE CONNECTOR PL...

Page 34: ...UF 16V C209 C212 HCBS1H223ZFT CAP CERAMIC 0 022UF 50V Z C213 C216 HCEA1AKS101T CAP ELECT 100UF 10V IC23 HVINJM2296M I C VIDEO SW R201 R205 CRD20TJ750T RES CARBON 75 OHM 1 5W J R206 R207 CRD20TJ332T RES CARBON 3 3K OHM 1 5W J R208 R209 CRD20TJ4R7T RES CARBON 4 7 OHM 1 5W J R210 R213 CRD20TJ102T RES CARBON 1K OHM 1 5W J BN21 KJP09GB99ZM CONNECTOR MOLEX 35237 0910 JK21 CJJ4S003W JACK VIDEO JK22 CJJ4N...

Page 35: ...W J BN81 BJP26GB132ZK FLEXIBLE CONNECTOR SOCKET TMC D26X A1 CN01 KJP15GB116ZG WAFER CARDCABLE GF120 15S LS CN12 KJP07GA98ZM WAFER MOLEX 35336 0710 CN42 KJP14GA98ZM WAFER MOLEX 35336 1410 PCB8 CUP11 551 7 PCB HEADPHONE BN78 CWBIC004070BM WIRE ASS Y JK25 HJJ2E020Z JACK HEADPHONE HTJ 064 05NG JW72 CWZAVR2550JW82 WIRE ASS Y AMP B D CUP11397 1 2 PCB1 CUP11397 1 PCB FRONT AMP C501 C502 HCEA1HH4R7T CAP E...

Page 36: ...OHM 1 4W J R555 R556 CRD25TJ221T RES CARBON 220 OHM 1 4W J R557 R560 CRD25TJ2R2T RES CARBON 2 2 OHM 1 4W J R563 R566 CRD25TJ102T RES CARBON 1K OHM 1 4W J R567 R568 CRD20TJ102T RES CARBON 1K OHM 1 5W J R569 R570 CRD20TJ103T RES CARBON 10K OHM 1 5W J R583 R584 CRD20TJ331T RES CARBON 330 OHM 1 5W J R751 R752 CRD20TJ473T RES CARBON 47K OHM 1 5W J R753 R754 CRD2OTJ332T RES CARBON 3 3K OHM 1 5W J R755 C...

Page 37: ...HVTKTA1268GRT T R KTA1268GR Q611 Q612 HVTKTA3200GRT T R KTC3200GR Q627 Q628 KVTKSC2785YT T R KSC2785Y Q701 Q703 HVTKTA1268GRT T R KTA1268GR Q704 HVTKTC3200GRT T R KTC3200GR Q705 HVTKTA1268GRT T R KTA1268GR Q706 HVTKTC3200GRT T R KTC3200GR Q714 KVTKSC2785YT T R KSC2785Y R601 R602 CRD20TJ102T RES CARBON 1K OHM 1 5W J R603 R606 CRD20TJ473T RES CARBON 47K OHM 1 5W J R607 R608 CRD20TJ271T RES CARBON 27...

Page 38: ...R2T RES CARBON 2 2 OHM 1 4W J R732 R733 CRD25TJ102T RES CARBON 1K OHM 1 4W J R734 CRD20TJ102T RES CARBON 1K OHM 1 5W J R735 CRD20TJ103T RES CARBON 10K OHM 1 5W J BN61 BN62 BJP06GB131ZK CONNECTOR PLUG TAC L60P B3 BN71 BJP06GB131ZK CONNECTOR PLUG TAC L60P B3 BN74 KJP10GB99ZM WAFER MOLEX 35237 1010 C613 C616 KCEA1JAHS471E CAP ELECT AHS 470 63V C707 C708 KCEA1JAHS471E CAP ELECT AHS 470 63V Q615 Q616 H...

Page 39: ...R579 CRD20TJ101T RES CARBON 100 OHM 1 5W J R580 R581 CRD25TJ470T RES CARBON 47 OHM 1 4W J R673 R674 CRD25TJ470T RES CARBON 47 OHM 1 4W J R677 CRD20TJ101T RES CARBON 100 OHM 1 5W J R678 R679 CRD25TJ470T RES CARBON 47 OHM 1 4W J R770 R771 KRD25TJ470T RES CARBON 47 OHM 1 4W J R773 CRD20TJ101T RES CARBON 100 OHM 1 5W J BN75 BJP13GB131ZK CONNECTOR PLUG TAC L13P B3 BN76 KJP03GB99ZM CONNECTOR MOLEX 35237...

Page 40: ... HCBS1H104ZFT CAP CERAMIC 0 1UF 50V Z C379 HCEA1CH101T CAP ELECT 100UF 16V C380 HCEA1CKS100T CAP ELECT 10UF 16V C381 CCFT1H104ZF CAP SEMI 0 1UF 50V Z C382 HCBS1H473ZFT CAP CERAMIC 0 047UF 50V Z C383 HCEA1AH471T CAP ELECT 470UF 10V C387 CCC1H180JC CAP CERAMIC 18PF 50V J C388 CCKT1H101KB CAP CERAMIC 100PF 50V K C389 C390 HCEA1CH101T CAP ELECT 100UF 16V C391 HCBS1H104ZFT CAP CERAMIC 0 1UF 50V Z C392 ...

Page 41: ...3264 CL I C DSP L301 L303 KLQ100J405T COIL PEAKING RADIAL 10UH J 4 5 Q301 Q303 HVTKSC2316YT T R KSC2316Y R377 CRD20TJ102T RES CARBON 1K OHM 1 5W J R378 CRD20TJ4R7T RES CARBON 4 7 OHM 1 5W J R380 R382 CRD20TJ4R7T RES CARBON 4 7 OHM 1 5W J R383 R384 CRD20TJ104T RES CARBON 100K OHM 1 5W J R385 R386 CRD20TJ750T RES CARBON 75 OHM 1 5W J R387 CRD20TJ101T RES CARBON 100 OHM 1 5W J R388 CRD20TJ104T RES CA...

Page 42: ... ELECT 10UF 16V C161 C162 HCBS1H270JT CAP CERAMIC 27PF 50V J C163 C164 HCBS1H223ZFT CAP CERAMIC 0 022UF 50V Z C165 C168 HCEA1CKS100T CAP ELECT 10UF 16V C169 C170 HCBS1H270JT CAP CERAMIC 27PF 50V J C171 C172 HCBS1H223ZFT CAP CERAMIC 0 022UF 50V Z C173 C175 HCEA1HKS4R7T CAP ELECT 4 7UF 50V C176 C178 HCEA1CKS100T CAP ELECT 10UF 16V C179 C180 HCBS1H223ZFT CAP CERAMIC 0 022UF 50V Z C181 C182 HCEA1EH101...

Page 43: ...J R157 R158 CRD20TJ101T RES CARBON 100 OHM 1 5W J R159 R160 CRD20TJ563T RES CARBON 56K OHM 1 5W J R161 R162 CRD20TJ392T RES CARBON 3 9K OHM 1 5W J R163 CRD20TJ203T RES CARBON 20K OHM 1 5W J R164 CRD20TJ303T RES CARBON 30K OHM 1 5W J R165 CRD20TJ563T RES CARBON 56K OHM 1 5W J R166 CRD20TJ104T RES CARBON 100K OHM 1 5W J R167 R168 CRD20TJ222T RES CARBON 2 2K OHM 1 5W R169 R170 CRD20TJ101T RES CARBON ...

Page 44: ...1 5W J R353 R354 CRD20TJ113T RES CARBON 11K OHM 1 5W J R355 R356 CRD20TJ101T RES CARBON 100 OHM 1 5W J R357 R358 CRD20TJ104T RES CARBON 100K OHM 1 5W J R359 R361 CRD20TJ102T RES CARBON 1K OHM 1 5W J R362 R363 CRD20TJ101T RES CARBON 100 OHM 1 5W J R364 R365 CRD20TJ332T RES CARBON 3 3K OHM 1 5W J R366 CRD20TJ104T RES CARBON 100K OHM 1 5W J R367 R368 CRD20TJ101T RES CARBON 100 OHM 1 5W J R369 R370 CR...

Page 45: ...SERVICE MANUAL L76 A V RECEIVER NAD ELECTRONICS INTERNATIONAL TORONTO NAD 2003 ...

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