NAD-T763-avr-sm 维修电路原理图.pdf

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1、NADSERVICE MANUALT 763T 763Surround Sound ReceiverSurround Sound ReceiverDRAFT DATE: 06 FEB 2004RadioFans.CN 收音机爱 好者资料库2SAFETY INFORMATIONAH VERSIONC VERSIONRadioFans.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

2、WITH SAME TYPE OFFUSE.Reference DesignatorPart NumberDescriptionF751*AH 33-0191001-00-88FUSE 10A/250VAC TIME-LAG 5X20mm5T UL/CSAF751*C 33-0181006-00-88FUSE 6.3A/250VAC TIME-LAG 5X20mm5T VDE/UL/CSAF752*AH 33-0111006-00-88FUSE 1.6A 250V TIME LAG 5x20mm 5TUL/CSA/VDE/SEMKOF752*C 33-0151006-00-88FUSE 800

3、mA 250V TIME LAG 5x20mm5T UL/CSA/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 cir

4、cuit.CONTENTSDESCRIPTIONPAGESPECIFICATIONS. 4 - 5REAR PANEL / FRONT PANEL VIEW . 6DISASSEMBLY INSTRUCTIONS . 7WIRING DIAGRAM. 8BLOCK DIAGRAM. 9SPECIAL FUNCTION . 10DETAILS & WAVEFORMS ON SYSTEM & TEST & DEBUGGING . 10ADJUSTMENT POINTS DIAGRAM / AMPLIFIER ADJUSTMENT .11PCB LAYOUT . 12 - 25SCHEMATIC D

5、IAGRAM . 26 - 43IC BLOCK DIAGRAM . 44 - 52EXPLODED VIEW. 53 - 54EXPLODED VIEW PARTS LIST. 55 - 56ELECTRICAL PARTS LIST . 57 - 70PACKING DIAGRAM . 71VERSION HISTORY . 72Parts marked with the symbol are critical with regard to the risk of fire and electric shock.Replace only with parts recommended by

6、the manufacturer.4SPECIFICATIONSPOWER AMPLIFIER SECTIONRated 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/BS) 0.1 %Input Sensitivity(ref. 8 ohms, 1 kHz)157 20 mVS/N Ratio(A-wtd, 1kHz, 1 W, 8 ohm, SL/SR/BL) - 72 dBFreq

7、uency Response(20 Hz - 20 kHz)0 1.0 dBChannel Balance(1 dB to -40 dB, 1 kHz) 2 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

8、500 mV in, 1 W out, 10 kHz) 10 dB 2 dBDOLBY DIGITAL SECTIONChannel Difference(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

9、 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(TRACK 30 for O/P 1 W, FAUSE)CCIR / ARM 65 dBAudio LPF 70 dBA-WTD 70 dBChannel Separation(1 W, A-WTD FILTER)Track 65 997 Hz 60 dBDOLBY PRO LOGIC II SECTIONFrequency ResporseI/P mode : L

10、, R: 1 V in, 1 W, Ch L/R40 Hz0 2.0 dB20 kHz0 2.0 dBI/P mode : L=R: 1 V in, 1 W, Ch /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

11、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) 0.2 %5DTS SECTIONOutput Level (Vol 0 dB): FL/FR/C/SL/SRTrack 61 kHz0.3 1.3 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 %Freq

12、uency Response (20 Hz to 20 kHz)Track 26-30+2/-1.5Subwoofer Output Level1 kHz ref at pre-out (FL)Play Track 10, charge to 1512.5 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

13、 mV in) 38 dBTHD(5 mV in) 3 %IF Rejection(450 kHz) 36 dBImage Rejection(F+2xIF) 28 dBSelectivity 17 dBOutput170 -20/+30 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

14、reading in open circuitof 75-ohm source impedance signal generatorUsable sensitivity(98 MHz) 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 dBA

15、lternate Channel Selectivity (40 dB, 400 kHz) 60 dB 45 dBCapture Ratio(40 dB) 3 dB 3 dBAM 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

16、 0.25 % 0.25 %Stereo 0.35 % 0.35 %Auto-Search SensitivityOn 24 dB 24 dBOff 15 dB 15 dBRDS 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)6123456789211020111912131415161718T 763 (AH)

17、 NORTH AMERICAT 763 (C) EUROPEAN VERSION25117151613101112193967841814FRONT PANELREAR PANEL / FRONT PANEL VIEWREAR PANEL1.FM & AM ANTENNA2.MAIN IN / AUDIO PRE-OUTS /SUBWOOFER OUT3.SOFT CLIPPING ON/OFF4.MONITOR OUT5.MS OUT (MULTISOURCE OUT)6.CD INPUT7.IR INPUT & OUTPUT8.12V TRIGGER INPUT & OUTPUT9.COM

18、PONENT VIDEO IN &COMPONENT VIDEO OUT10.DIGITAL AUDIO INPUT &DIGITAL AUDIO OUTPUT11.RS-23212.POWER SWITCH13.SWITCHED AC OUTLETS14.AC POWER INLET15.SPEAKERS A & B16.DVD, SAT, VCR, VIDEO 4 & VIDEO 517.TAPE INPUT & OUTPUT18.DISC INPUT19.7.1 CH. INPUTS1.STANDBY SWITCH2.STANDBY LED3.AM / FM4.FM MUTE / MOD

19、E5.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.TONE DEFEAT19.SPEAKERS A & B20.VIDEO 6 INPUT21.PHONES7DISASSEMBLY INSTRUCTIONS1.Remove machine screws M4.

20、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. 1.2.Pull both sides of the TOP COVER slightly outwards 11 and tilt approx. 35 and then removein the direction as indicated by the arrow 12. Refer to Figure No. 2.Figure No. 1Figure

21、No. 28?UL1533 L=540mm82-0426135-03-XXCABLE ASSY 4 WAYS 2.5PUL2468 L=540mm?36-2028201-71-XXFFC CABLE 20 PINS P1.25L=200mm?36-3028061-71-XXFFC CABLE 30 PINSP1.25 L=60MM82-1026135-01-XXCABLE ASSY 10 WAYS #262.5P UL2877 L=540mm?82-0826135-04-XXCABLE ASSY 8 WAYS #26 2.5P?82-0426135-01-XXCABLE ASSY 4 WAYS

22、#26 2.5P UL2877L=430mm?WIRING DIAGRAM9BLOCK DIAGRAM10SPECIAL FUNCTIONFEATUREKEYS PRESS ON FRONT PANELRESET FOR AH VERSIONVIDEO + TONE DEFEATRESET FOR C VERSIONVIDEO + TONE CONTROLSNTSC / PAL SELECTIONVIDEO + MEMORYVFD ALL DISPLAYAUDIO + TAPE MONITORAM FREQ. STEPAM/FM + FM MUTEDETAILS & WAVEFORMS ON

23、SYSTEM TEST & DEBUGGINGT89C51RD2 (U202) main clock is at 20MHz (X202)T89C51RD2 (U201) main clock is at 20MHz (X201)UPPER - +5V supply to KEYBOARD when power upLOWER - RESET line (TCM810LENB713) whenpower upUPPER - OUTPUT ENABLE (pin 24) of EPROM(W27C02) when changing SURROUND MODESLOWER - CHIP ENABL

24、E (pin 22) of EPROM(W27C02) when changing SURROUND MODESSCLK (pin 43 of CS49326)LRCLK (pin 42 of CS49326)MCLK (pin 30 of CS49326)NOTE: The waveforms are based on software version V1.26.11R522R545R571P501P502P503R881R834P803P802P801R835R836R897AMPLIFIER ADJUSTMENTIdle Current1.Rotate R522 fully clock

25、wise.2.Connect DC millivoltmeter to P501 (i.e. Across half of R523, 0.22 Ohm resistor).3.Turn on the unit.4.Adjust R522 for 1mV reading on voltmeter.5.Leave power on for at least 5 min, and check for idle current again.6.Repeat for other channels.CHANNELJUMPERVRFLP501R522FRP502R545CP503R571SLP801R83

26、5SRP802R836BSP803R897ISC Sensitivity1.Connect 8 ohm loading to all channels.2.Rotate R881 fully clockwise.3.Load all channels at full power using 1kHz sine wave.4.At this time, monitor the THD of the SL,SR,BS output. Clipping should occur before full power achieved.5.Rotate R834 counter-clockwise sl

27、owly until the THD just below 0.1%.6.Repeat step 2-5 for R834 but monitor FL, FR & Center output.7.The procedure is finish at this step.8.Load all channels at full power using 1kHz sine wave with 4 ohm load.9.The clipping power(at THD 0.1%) should less than 85W.ADJUSTMENT POINT DIAGRAMFRONT/CENTER A

28、MPLIFIER BOARDSURROUND AMPLIFIER BOARDISC BOARD12PCB LAYOUTAUDIO BOARDCOMPOSITE VIDEO BOARD13COMPONENT VIDEO BOARD - COMPONENT SIDECOMPONENT VIDEO BOARD - COPPER SIDEDIGITAL BOARD - COMPONENT SIDEDIGITAL BOARD - COPPER SIDE14DSP BOARD - COPPER SIDEDSP BOARD - COMPONENT SIDE15FRONT/CENTER AMPLIFIER B

29、OARD - COMPONENT SIDE16FRONT/CENTER AMPLIFIER BOARD - COPPER SIDE17SURROUND AMPLIFIER BOARD - COMPONENT SIDE18SURROUND AMPLIFIER BOARD - COPPER SIDE19KEY BOARD / LED BOARD- COMPONENT SIDEKEY BOARD / LED BOARD- COPPER SIDE20MAIN BOARD21MULTI-CHANNEL BOARD - COMPONENT SIDEMULTI-CHANNEL BOARD - COPPER

30、SIDE22POWER SUPPLY (STANDBY)ISC BOARD- COMPONENT SIDEISC BOARD- COPPER SIDE23PRE-OUT BOARD - COPPER SIDEPRE-OUT BOARD - COMPONENT SIDERS-232 BOARD- COPPER SIDE- COMPONENT SIDE24SPEAKER TERMINAL BOARDPOWER SWITCH / TRIGGER BOARDVIDEO 6 BOARDSECONDARY BOARD25S-VIDEO BOARD26SCHEMATIC DIAGRAMAUDIO SWITC

31、HRESISTORS : UNLESS OTHERWISE SPECIFIED ARE CARBON FILM.NOTE:1. RESISTORS, UNLESS OTHERWISE SPECIFIED, ARE 1/6W, 5%.2. ALL CERAMIC CAPACITORS, UNLESS OTHERWISE SPECIFIED, ARE 50V, 10%.27COMPONENT VIDEORESISTORS : UNLESS OTHERWISE SPECIFIED ARE CARBON FILM.NOTE:1. RESISTORS, UNLESS OTHERWISE SPECIFIE

32、D, ARE 1/6W, 5%.2. ALL CERAMIC CAPACITORS, UNLESS OTHERWISE SPECIFIED, ARE 50V, 10%.28E C B2SA933DTC144ESAE C BDTA144ESAE C BCOMPOSITE VIDEORESISTORS : UNLESS OTHERWISE SPECIFIED ARE CARBON FILM.NOTE:1. RESISTORS, UNLESS OTHERWISE SPECIFIED, ARE 1/6W, 5%.2. ALL CERAMIC CAPACITORS, UNLESS OTHERWISE S

33、PECIFIED, ARE 50V, 10%.29ISCE C B2SA10152SC1815RNRNE C B2SA1016KRNRNRESISTORS : RN-CERMIC CASE, MO-METAL OXIDE, F-FUSIBLE UNLESS OTHERWISESPECIFIED ARE CARBON FILM.NOTE:1. RESISTORS, UNLESS OTHERWISE SPECIFIED, ARE 1/6W, 5%.2. ALL CERAMIC CAPACITORS, UNLESS OTHERWISE SPECIFIED, ARE 50V, 10%.3. COMPO

34、NENTS MARKED “” ARE SAFETY CRITIAL PARTS.30POWER SUPPLY (SECONDARY)NOTE:1. RESISTORS, UNLESS OTHERWISE SPECIFIED, ARE 1/6W, 5%.2. COMPONENTS MARKED “” ARE SAFETY CRITIAL PARTS.31POWER SUPPLY (STAND BY)E C B2SC1815(F)RESISTORS : F-FUSIBLE, UNLESS OTHERWISE SPECIFIED ARE CARBON FILM.NOTE:1. RESISTORS,

35、 UNLESS OTHERWISE SPECIFIED, ARE 1/6W, 5%.2. COMPONENTS MARKED “” ARE SAFETY CRITIAL PARTS.32TRIGGERDTC123ESAE C BRESISTORS : UNLESS OTHERWISE SPECIFIED ARE CARBON FILM.NOTE:1. RESISTORS, UNLESS OTHERWISE SPECIFIED, ARE 1/6W, 5%.2. ALL CERAMIC CAPACITORS, UNLESS OTHERWISE SPECIFIED, ARE 50V, 10%.33V

36、IDEO 6RESISTORS : UNLESS OTHERWISE SPECIFIED ARE CARBON FILM.NOTE:1. RESISTORS, UNLESS OTHERWISE SPECIFIED, ARE 1/6W, 5%.2. ALL CERAMIC CAPACITORS, UNLESS OTHERWISE SPECIFIED, ARE 50V, 10%.34E C B2SA933E C B2SC1740E C B2SC18152SC2878DTC144ESADTC123ESADTA144ESAE C BS-VIDEORESISTORS : UNLESS OTHERWISE

37、 SPECIFIED ARE CARBON FILM.NOTE:1. RESISTORS, UNLESS OTHERWISE SPECIFIED, ARE 1/6W, 5%.2. ALL CERAMIC CAPACITORS, UNLESS OTHERWISE SPECIFIED, ARE 50V, 10%.35E C B2SA10162SC2362B C E2SA16062SC4159B C E2SA20312SC5669E C B2SB772E C B2SD600K2SD631KDTC123ESAE C BRNRNRNFRONT / CENTER AMPLIFIERNOTE:1. RESI

38、STORS, UNLESS OTHERWISE SPECIFIED, ARE 1/6W, 5%.2. ALL CERAMIC CAPACITORS, UNLESS OTHERWISE SPECIFIED, ARE 50V, 10%.3. COMPONENTS MARKED “” ARE SAFETY CRITIAL PARTS.RESISTORS : RN-CERAMIC CASE, MO-METAL OXIDE, UNLESSOTHERWISE SPECIFIED ARE CARBON FILM.36SURROUND / BACK SURROUND AMPLIFIERRNRNRNE C B2

39、SC2362E C B2SA10152SA1815B C E2SA16062SC4159B C E2SA20312SC5669E C B2SD600K2SD631KDTC123ESAE C BE C B2SA1016K2SC2362E C B2SC1740SE C B2SB772RESISTORS : RN-CERAMIC CASE, MO-METAL OXIDE, UNLESS OTHERWISE SPECIFIED ARE CARBON FILM.NOTE:1. RESISTORS, UNLESS OTHERWISE SPECIFIED, ARE 1/6W, 5%.2. ALL CERAM

40、IC CAPACITORS, UNLESS OTHERWISE SPECIFIED, ARE 50V, 10%.3. COMPONENTS MARKED “” ARE SAFETY CRITIAL PARTS.37SPEAKER A & BRS-232NOTE:1. RESISTORS, UNLESS OTHERWISE SPECIFIED,ARE 1/6W, 5%.38DIGITAL IN & OUT39E B CSS8050MAIN BOARDNOTE:1. RESISTORS, UNLESS OTHERWISE SPECIFIED, ARE 1/6W, 5%.2. ALL CERAMIC

41、 CAPACITORS, UNLESS OTHERWISE SPECIFIED, ARE 50V, 10%.40E C BRN1241DTA114ESAE C BPRE-OUTNOTE:1. RESISTORS, UNLESS OTHERWISE SPECIFIED, ARE 1/6W, 5%.2. ALL CERAMIC CAPACITORS, UNLESS OTHERWISE SPECIFIED, ARE 50V, 10%.41E C B2SC1815DSPNOTE:1. RESISTORS, UNLESS OTHERWISE SPECIFIED, ARE 1/6W, 5%.2. ALL

42、CERAMIC CAPACITORS, UNLESS OTHERWISE SPECIFIED, ARE 50V, 10%.42E C B2SC1815KEYBOARDNOTE:1. RESISTORS, UNLESS OTHERWISE SPECIFIED, ARE 1/6W, 5%.2. ALL CERAMIC CAPACITORS, UNLESS OTHERWISE SPECIFIED, ARE 50V, 5%.43E C B2SC2878E B CSS8050SS8550DTC144ESADTA144ESAE C BMULTI-CHRESISTORS : UNLESS OTHERWISE

43、 SPECIFIED ARE CARBON FILM.NOTE:1. RESISTORS, UNLESS OTHERWISE SPECIFIED, ARE 1/6W, 5%.2. ALL CERAMIC CAPACITORS, UNLESS OTHERWISE SPECIFIED, ARE 50V, 10%.4412345678910DIRA1A2A3A4A5A6A7A8GND20191817161514131211VCCGB1B2B3B4B5B6B7B8(1)(2)(3)(4)(5)(6)(7)(8)(9)(11)(19)(18)(17)(16)(15)(14)(13)(12)OECKD01

44、DC1END1D2D3D4D5D6D7Q0Q1Q2Q3Q4Q5Q6Q774LVQ574DSP BOARD: U1008, U1009W27C020DSP BOARD: U1007Q0Q7CEOEA0CONTROLOUTPUTBUFFERCOREARRAYDECODERPGMVCCGNDVPPA17312224IC BLOCK DIAGRAM74LVC245DSP BOARD: U1002, U1003, U101474VHC245KEYBOARD: U209NJM5532DSP BOARD: U1010U1013, U1023 & U1028MULTI-CHANNEL: U6104U6107P

45、RE-OUT BOARD: U609U613ISC BOARD: U8011A- +2348765B+ -CS4360KZDSP BOARD: U102645 CS49326DSP BOARD: U1001CS8415ADSP BOARD: U1005CS4392DSP BOARD: U10254674HCU04DIGITAL BOARD: U1201 & U12021A1Y2A2Y3A3YGND12345671413121110986AVCC6Y5A5Y4A4YCS5333KZDSP BOARD: U102774HC251DIGITAL BOARD: U1203PIN4 D0W PIN6Y

46、PIN5PIN8 GNDPIN16 VCCPIN7 STROBES0PIN3 D1S1PIN2 D2S2PIN1 D3S3PIN15 D4S4PIN14 D5S5PIN13 D6S6PIN12 D7PIN11 APIN10 BPIN9 CS7S0S0S1S1S2S2S3S3S4S4S5S5S6S6S7S747VDDCONTACONTDIN/OUTIN/OUTOUT/INSW DSW COUT/ININ/OUT OUT/IN OUT/IN IN/OUTVSSCONTBCONTC1489101112131765432SW ASW BSWASWDSWBSWCTCM810KEYBOARD: U214L

47、C4966COMPOSITE VIDEO: U4201S-VIDEO BOARD: U4104MULTI-CHANNEL: U6103AT24C16KEYBOARD: U210SDAVSSSCLWCVCC/ E2M24Cxx12348765/ E2/ E2/ E2NC/ E1/ E1/ E1/ NCNC/ E0/ E0/ NC/ NCNC/1Kb/2Kb/4Kb/8Kb16KbVCCRESET*(RESET)GNDTCM809xENBTCM810 xENB123*3-Pin SOT-23BNOTE: *3-Pin SOT-23B is equivalent to JEDEC TO-236 *

48、() is for TCM81048HCF4094BKEYBOARD: U204U207 & U211SERIALINCLOCKSTROBELATCH 13-STATE1OUTPUTENABLE2SERIALOUTQS10SERIALOUTQS9151D QCLCL3CLCL1CLCL2D QCLCLLATCH2TRTRLATCH3TRTR3-STATE23-STATE33D QCLCLQSTAGES3 - 722222222Q3Q2Q1VSSVDDQ7Q8Q6Q5Q4CLCLCLCLpnTLTLpnpnTLTLp npnVDDVSSPCB44454337364138RDIOBKLATBLDI

49、ORDINRDOUTLDINLDOUTDIRCLKSQ1SQ64QB1HVO1HVO23GQB23DIRECTIONCONTROLUNITSHIFTUNITLATCHUNITDIRRDIOLDIODIRCLKBQB24HVO24HVO41GQB41LATCHUNIT51738299QB42HVO42HVO64GQB64LATCHUNIT0830VDD2 02 31 50 79VSS2 05 34 47 76PT6306KEYBOARD: U20349T89C51RD2KEYBOARD: U201 & U20274HC4051KEYBOARD: U20846COM OUT/IN75INHVEEG

50、ND12345678161514131211109VCC2103ABCCHANNELSIN/OUTCHANNELSIN/OUTCHANNELSIN/OUT74HC40515002COM Y OUT/IN31INHVEEGND12345678161514131211109VCC21COM X OUT/IN03ABY CHANNELSIN/OUTX CHANNELSIN/OUTX CHANNELSIN/OUTY CHANNELSIN/OUT74HC4052BA7660FSCOMPONENT VIDEO BOARD: U4301MUTEINAGNDINBGNDN.C.INCGND1234567816