NAD L 70 Service Manual Download Page 29 | Manualshive

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Summary of Contents for L 70

Page 1: ...NAD SERVICE MANUAL L 70 L 70 AV SURROUND SOUND DVD RECEIVER AV SURROUND SOUND DVD RECEIVER DRAFT DATE 20 Jan 2004...

Page 2: ...AL OUTPUT OUTPUT COMPONENT COMPONENT VIDEO OUT VIDEO OUT Cr Cb Y VIDEO L R R L R L CENTER FRONT SURROUND 5 1 CHANNEL INPUT CENTER SURROUND OSD SELECT FRONT SUBW VIDEO S VIDEO SPEAKERS AC OUTLET SWITCH...

Page 3: ...ICING GUIDELINES 1 4 SERVICING PRECAUTIONS 1 5 General Servicing Precautions Insulation checking prodedure Electrostatically Sensitive Devices SPECIFICATIONS 1 6 DISASSEMBLY 1 7 PRINCIPAL PART LOCATIO...

Page 4: ...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...

Page 5: ...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...

Page 6: ...TICAL 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 CABLE SAT VCR VIDEO4 Improvements may result in specifications and fea...

Page 7: ...1 7 DISASSEMBLY 1 REMOVAL OF TOP COVER 2 REMOVAL OF FRONT PANEL...

Page 8: ...FOR Receiver Functions Only Press Play then Stop then the FM AM key holding in the FM AM key for more than 5 seconds RESET PROCEDURE FOR DVD Player Functions Only Select DEFAULTS to restore factory d...

Page 9: ...NT PCB AS S Y PANE L S UB POWE R TR ANS FOOT VIDE O JACK PCB AS S Y CABINE T TOP INDICATOR POWE R 5 1 1 2 1 1 1 1 1 PANE L AL KNOB E NTE R WINDOW FIP COVE R JACK OR NAME NT DOOR BAR S IDE KNOB DIS PLA...

Page 10: ...2 WIRING DIAGRAM 2 37 3 SCHEMATIC DIAGRAM 2 39 FRONT COM PART 2 39 INPUT VOLUME PART 2 41 DSP CODEC PART 2 43 VIDEO PART 2 45 AMP PART 2 47 POWER PART 2 49 DVD BACK END PART 2 51 4 PRINTED CIRCUIT BO...

Page 11: ...P ENABLE PORT FOR AK4586 26 OSD_CE O CHIP ENABLE PORT FOR OSD IC LC74763 27 POWER O POWER ON CONTROL PORT H 28 PLL_DIN I PLL DATA INPUT PORT 29 FUNC_CE O CHIP ENABLE PORT FOR FUNCTION IC TC9163 9164 3...

Page 12: ...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 V...

Page 13: ...dio Input Interface Framer Shifter Input Buffer Controller PIN ASSIGNMENT IC41 CS493264 TOP VIEW BlOCK DIAGRAM IC41 CS493264 VD1 DGND1 AUDATA3 XMT958 WR DS EMWR GPIO10 RD R W EMOE GPIO11 A1 SCDIN A0 S...

Page 14: ...1 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...

Page 15: ...VDD P4 P3 P2 P1 CLR STB CLK DATA 1 2 3 4 5 6 7 8 9 18 17 16 15 14 13 12 11 10 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 NJU37...

Page 16: ...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 SDT...

Page 17: ...2 18 PIN FUNCTION IC42 AK4586...

Page 18: ...4 BLOCK DIAGAM NJM2296M MAIN IC96 SW3 GND SW5 Vin2 Vin3 Vin4 Vin5 1 15 11 16 10 14 12 2 9 7 5 4 6 8 3 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...

Page 19: ...5 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 L S L S L S L COM L S L COM L S 7 L S L COM ST R S R S R S 5 R S 1 R COM R S 2 R COM R...

Page 20: ...me volume tone 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 OUT4 volume MCU I F OUTPUT PORT OUT3 OUT2 OUT1 AVDD SWin GNDS SRin SLin GNDC Cin GNDR Rin GNDL Lin BYPASSR BYPASSL LTRE LBASS3 LBAS...

Page 21: ...play position detection Vertical dot counter Flashing reversal control register Flashing reversal control register Display control register RAM write address counter Composite synchro nization signal...

Page 22: ...IABLE AND FIXED DIVIDER SYMBOL MODE TEST VSSD MEH162 SAA6579 VSSA VDDA 0 1 Vref Vp1 0 1 2 2 k 82 pF 47 pF 4 332 8 664 MHz RDCL RDDA QUAL 12 VDDD OSCO OSCI 330 pF MUX MPX signal SCOUT 560 pF CIN 14 13...

Page 23: ...2 24 IC10 IC11 SDRAM...

Page 24: ...2 25 HY57V161610D...

Page 25: ...2 26 ES4318 IC01...

Page 26: ...2 27 PIN GEOGRAPHY...

Page 27: ...2 28...

Page 28: ...a Amplifier Output Interpolate LPF Burst Insert Chroma Interpolate LPF Luma Interpolate Luma Amplifier Sync Insert U V Y Video Timing Generator TEST Current Reference Voltage Reference VREF R DAC Y DA...

Page 29: ...2 30...

Page 30: ...YTE COMMAND REGISTER DQ 15 0 A 17 0 A 1 VCC DETECTOR TIMER ERASE VOLTAGE GENERATOR AND SECTOR SWITCHES PROGRAM VOLTAGE GENERATOR ADDRESS LATCH X DECODER Y DECODER 4 Mb FLASH MEMORY ARRAY Y GATING DATA...

Page 31: ...i r w r o f d e t a g e n d n a e r a e c i v e d e h t m o r f s t u p t u o a t a d h g i H n e h W n o i t a r e p o d a e r e h t g n i r u d d a e r s i e t a t s e c n a d e p m i h g i h e h t...

Page 32: ...t serial data input serial data output Wite protect pin Power supply Ground 0V Out of use Please connect to GND Slave and word address PIN NAME 16kbits EEPROM ARRAY CONTROL LOGIC HIGH VOLTAGE GEN ACK...

Page 33: ...Emitter KTB1369Y KTD2061Y TO 220 1 Emitter 2 Base 3 Collecfor 1 2 3 KRA102S KRC102S KTA1304 SOT 23 1 INPUT 2 GND 3 OUTPUT MC7812C MC7806C TO 220 123 123 1 INPUT 2 OUTPUT 3 GND 4 CONTROL KIA78R05 KIA2...

Page 34: ...2 35 2 36 1 BLOCK DIAGRAM...

Page 35: ...2 37 2 38 2 WIRING DIAGRAM...

Page 36: ...2 39 2 40 3 SCHEMATIC DIAGRAM FRONT COM PART...

Page 37: ...2 41 2 42 INPUT VOLUME PART...

Page 38: ...2 43 2 44 DSP CODEC PART...

Page 39: ...2 45 2 46 VIDEO PART...

Page 40: ...AMP PART 2 47 2 48...

Page 41: ...2 49 2 50 POWER PART...

Page 42: ...2 51 2 52 DVD BACK_END PART...

Page 43: ...LECT 220uF 16V C901 C903 CCEA1EKR222E CAPACITOR ELECT 2200uF 25V C904 CCEA1CKR222E CAPACITOR ELECT 2200uF 16V LOAD NO PART NO DESCRIPTION SPECIFICATION Numbering System of Resistor Numbering System of...

Page 44: ...D802 HVD1SS133MT DIODE C VER 1SS133T 77 D803 HVD1SS133MT DIODE 1SS133T 77 D804 HVD1SS133MT DIODE C VER 1SS133T 77 D805 D808 HVD1SS133MT DIODE 1SS133T 77 D810 HVD1SS133MT DIODE 1SS133T 77 D901 D902 HV...

Page 45: ...1K OHM 1 5W J R918 CRD20TJ332T RESISTOR CARBON 3 3K OHM 1 5W J R919 CRD20TJ104T RESISTOR CARBON 100K OHM 1 5W J R920 CRD20TJ332T RESISTOR CARBON 3 3K OHM 1 5W J R922 CRD25TJ101T RESISTOR CARBON 100 O...

Page 46: ...ACITOR CERAMIC 270pF 50V KB C842 C843 CCKT1H151KB CAPACITOR CERAMIC 150pF 50V KB JK82 CJJ9M003Y JACK S VIDEO GOLD JK83 KJJ4S027Z JACK BOARD 3P WITH SWITCH R856 R858 CRD20TJ750T RESISTOR CARBON 75 OHM...

Page 47: ...R CHIP 47pF C280 C281 HCEA1VH100T CAPACITOR ELECT 10uF 35V C301 C306 HCUS1E104ZF CAPACITOR CHIP 0 1uF 25V C313 C318 HCEA1VH100T CAPACITOR ELECT 10uF 35V C319 C324 HCQI1H122JZT CAPACITOR MYLAR 1200pF 5...

Page 48: ...V 1 2W IC11 HVITC9164AF I C FUNCTION TC9164AF IC12 HVITC9162AF I C FUNCTION TC9162AF IC13 HVIM62446AFP I C VOLUME M62446AFP IC14 HVINJU3713G I C EXPANDER NJU3713G IC15 HVI74LCX08MX I C AND GATE QUAD 2...

Page 49: ...R177 R178 HRJ10DJ121T RESISTOR CHIP 120 OHM 1 10W R179 HRJ10DJ333T RESISTOR CHIP 33K OHM 1 10W R180 R181 HRJ10DJ104T RESISTOR CHIP 100K OHM 1 10W R182 R183 HRJ10DJ203T RESISTOR CHIP 20K OHM 1 10W R184...

Page 50: ...R324 HRJ10DJ102T RESISTOR CHIP 1K OHM 1 10W R325 R330 HRJ10DJ153T RESISTOR CHIP 15K OHM 1 10W R331 R333 HRJ10DJ332T RESISTOR CHIP 3K3 OHM 1 10W R334 HRJ10DJ102T RESISTOR CHIP 1K OHM 1 10W R335 R336 H...

Page 51: ...ATS 12 288MHZ CUP11554 2 VIDEO PCB BN41 KJP12GB99ZM CONNECTOR BN85 CWB1C911200EN WIRE ASS Y BN90 CWZL70BN90 WIRE ASS Y C501 C506 HCUS1H181JA CAPACITOR CHIP 180pF C507 C512 HCUS1H271JA CAPACITOR CHIP...

Page 52: ...5 6uH J L553 KLQ220J405T COIL PEAKING RADIAL 22uH J LE31 HLQ02C1R8KT COIL C VER 1 8uH K Q551 KVTKSC2785YT TRANSISTOR KSC2785Y Q552 KVTKSA1175YT TRANSISTOR KSA1175Y Q553 HVTKSC2316YT TRANSISTOR KSC231...

Page 53: ...C558 HCEA1EH330T CAPACITOR ELECT 33uF 25V C560 C562 HCEA1EH330T CAPACITOR ELECT 33uF 25V C563 C564 CCKT1H471KB CAPACITOR CERAMIC 470pF 50V KB C566 C568 CCKT1H471KB CAPACITOR CERAMIC 470pF 50V KB C569...

Page 54: ...1 5W J R575 R576 CRD20TJ181T RESISTOR CARBON 180 OHM 1 5W J R578 R580 CRD20TJ181T RESISTOR CARBON 180 OHM 1 5W J R581 R582 CRD20TJ103T RESISTOR CARBON 10K OHM 1 5W J R584 R586 CRD20TJ103T RESISTOR CA...

Page 55: ...R SOCKET TAC L06X A3 BN84 CWB1C912130EN WIRE ASS Y BN95 CWB1E904150BM WIRE ASS Y BN97 CWB1C906120EN WIRE ASS Y C921 HCET16VFHS223ND E CAPACITOR FHS 22000uF 16V C923 HCEA1CH101T CAPACITOR ELECT 100uF 1...

Page 56: ...N 6 8K OHM 1 5W J R950 CRD20TJ182T RESISTOR CARBON 1 8K OHM 1 5W J R951 CRD20TJ101T RESISTOR CARBON 100 OHM 1 5W J R952 CRD20TJ393T RESISTOR CARBON R953 CRD20TJ562T RESISTOR CARBON 5 6K OHM 1 5W J R95...

Page 57: ...1E104ZF CAPACITOR CHIP O 1uF C121 BCEC0JSE331T CAPACITOR CHIP ELECT 330uF 6 3 C123 HCUS1E104ZF CAPACITOR CHIP O 1uF C124 HCEC0JRV2101T CAPACITOR CHIP ELECT 100uF 6 3V C142 C144 HCUS1E104ZF CAPACITOR C...

Page 58: ...10W R187 R189 HRJ10DJ470T RESISTOR CHIP 47 OHM 1 10W R190 R192 HRJ10DJ330T RESISTOR CHIP 33 OHM 1 10W R193 R196 HRJ10DJ470T RESISTOR CHIP 47 OHM 1 10W R197 R198 HRJ10DJ472T RESISTOR CHIP 4K7 OHM 1 10W...

Page 59: ...PWR1 CLT5V031ZE TRANSISTORANS MAIN C VER CLT5V031ZU TRANSISTORANS MAIN AH VER TUN1 CNVKSTMB014MA18 MODULE TUNER C VER KST MB014MA1 8 CNVMB001MA09DS MODULE TUNER AH VER KST MB001MA0 9 CQXL70CCC INSTRA...

Page 60: ...SERVICE MANUAL L 70 AV SURROUND SOUND DVD RECEIVER NAD ELECTRONICS LTD TORONTO NAD 2002...

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