NAD-T744-avr-sm(1) 维修电路原理图.pdf

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1、NADSERVICE MANUALT 744T 744A/V ReceiverA/V ReceiverDRAFT DATE: 08 MAY 2007RadioFans.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.Reference Designato

2、rDatabase Part NumberDescriptionF751*AH20-001-0075-90FUSE TIME-LAG 7A 250V 5 X 20mmSIC UL/CSA (RoHS)F752*AH20-001-0076-90FUSE 1.6A 250V TIME LAG LBC 5x20mmTSD UL/CSA/VDE/SEMKO (RoHs)F751*C,CT20-001-0071-90FUSE TIME-LAG 4A/250V 5 X 20mmVDE/UL TSD (RoHS)F752*C,CT20-001-0069-90 FUSE 800mA 250V TIME LAG

3、 LBC5x20mm TSD UL/CSA/VDE/SEMKO (RoHS)FH751-FH75220-002-0030-90FUSE CLIP 0.05mm WL-210ANOTE: : 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 p

4、arts are acceptably insulated from supply circuit.CONTENTSDESCRIPTIONPAGESPECIFICATIONS. 4 - 5REAR PANEL / FRONT PANEL VIEW . 6DISASSEMBLY INSTRUCTIONS . 7WIRING DIAGRAM & PARTS LIST. 8 - 10BLOCK DIAGRAM.11SPECIAL FUNCTION . 12DETAILS & WAVEFORMS ON SYSTEM & TEST & DEBUGGING . 12ADJUSTMENT POINTS DI

5、AGRAM / AMPLIFIER ADJUSTMENT . 13PCB LAYOUT . 14 - 25SCHEMATIC DIAGRAM . 26 - 42IC BLOCK DIAGRAM . 43 - 49EXPLODED VIEW. 50EXPLODED VIEW PARTS LIST. 51 - 53ELECTRICAL PARTS LIST . 54- 66PACKING DIAGRAM . 67Parts marked with the symbol are critical with regard to the risk of fire and electric shock.R

6、eplace only with parts recommended by 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)260 20mVS/N Ratio(A-wtd, 1k

7、Hz, 1 W, 8 ohm, SL/SR/BL) - 75 dBFrequency 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,

8、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(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 LP

9、F, 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 0.08 %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

10、SECTIONFrequency ResporseI/P mode : L, 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

11、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) 0.2 %5DTS SECTIONOutput Level (Vol 0 dB): FL/FR/C/SL/SRTrack 61 kHz2.5 0.2 WChannel Difference (FL ref): FL/FR/C/SL/SRTrack 61 kHz 1.0 dBHarmonic Distortion (Audio Filter) : FL/F

12、R/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 pre-out (FL)Play Track 10, charge to 1512.5 2 dBAM TUNER SECTIONInput level is expressed as the reading in open circuitof 75-ohm source impedance signal generatorUsable sensitivi

13、ty(999/1000 kHz) 30 dB VS/N Ratio(5 mV in) 38 dBTHD(5 mV in) 3 %IF Rejection(450 kHz) 36 dBImage Rejection(F+2xIF) 28 dBSelectivity 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,*CT

14、 *AH,*AHTInput level is expressed as the reading in open circuitof 75-ohm source impedance signal generatorUsable sensitivity(98 MHz) 15 dB 15 dB vS/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

15、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 Suppression (60 dB, 100% Mod. FM, 30% Mod. AM) 48 dB 48 dBImage Rejection(119.4 MHz) 65 dBI.F. Rejection(10.7 MHz) 78 dB Pilot Suppression(98 MHz) 60 dB 60 dBTHD (60

16、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 dB Off 15 dB 15 dB RDS decode Sensitivity 26 dB PHYSICAL SPECIFICATIONSDimensions (Width x Height x Depth)435 x 150 x 390 mmNet Weight13.3 Kg (29.30 lbs)Shipping Weight16.9 Kg (37.20 lbs

17、)6FRONT PANELREAR PANEL / FRONT PANEL VIEWREAR PANEL1.FM & AM ANTENNA2.MONITOR OUT3.CD INPUT4.DIGITAL AUDIO INPUT &DIGITAL AUDIO OUTPUT5.SOFT CLIPPING ON/OFF6.IR INPUT & OUTPUT7.+12V TRIGGER INPUT & OUTPUT8.COMPONENT VIDEO IN &COMPONENT VIDEO OUT9.AC POWER CORD10.POWER SWITCH11.SWITCHED AC OUTLETS12

18、.SPEAKERS A & B13.DVD, SAT, VCR, VIDEO 4 & VIDEO 514.MAIN IN / AUDIO PRE-OUTS /SUBWOOFER OUT15.TAPE INPUT & OUTPUT16.DISC INPUT17.5.1 CH. INPUTS1.STANDBY SWITCH2.STANDBY LED3.AM / FM4.DISPLAY5.MEMORY6.FM MUTE / MODE7.PRESET DOWN / UP8.SEARCH DOWN / UP9.VFL DISPLAY10.VOLUME (SETUP)11.SOURCE DOWN / UP

19、12.SURROUND MODE13.LEVELS14.TONE DEFEAT15.TONE CONTROLS16.SPEAKERS A & B17.VIDEO 6 INPUT18.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. 1.2.Pull both sides of the TOP C

20、OVER 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 No. 28WIRING DIAGRAMTUNERJ705AJ705BFROM TRANSFORMER32283029683133262725252491012232120191817161514137453211122FOR T2743 120V VER.FOR T2743 120V VER.J20

21、3AJ713BJ714BJ753BJ204BJ713AJ714AJ782BJ715AJ720AJ709AJ502BJ704AJ707AJ710AJ717AJ719AJ711AJ715BJ604BJ203BDSP BOARDJ1010BJ1009BJ3103BJ709BVIDEO 6 INPUT LED BOARDJ783AJ782AJ784AJ781AJ786AJ710BJ711BJ704BJ414BJ1010AJ1009AJ602BJ603BJ707BJ414AJ612AJ611AJ717BJ601BJ719BJ601AJ602AJ603AJ604AJ751BJ753AJ754BJ753_N

22、J753_LJ759_LJ758_NJ504AJ612AJ502AJ503AJ501AJ505AJ506AJ504BJ781BJ501BJ506AJ503BJ611BJ801AJ204AJ505BJ506BJ801BJ350AJ786BJ201J701P4401P4402J606BJ350BJ3103BJ606B9WIRING DIAGRAM PARTS LISTItemDatabase Part NumberDescriptionRemark117-012-2959-90CABLE ASSY 3 WAYS AWG=18 3.96P UL1007AMP1L=180mmBD-J504A 217-

23、012-2969-90CABLE ASSY 5 WAYS P3.96 AWG18 UL1007AMP1L=200mmBD-J501A317-012-2976-90CABLE ASSY 12 WAYS AWG=26 2.5P UL2877AMP1L=120mmBD-J503A417-012-2959-90CABLE ASSY 3 WAYS AWG=18 3.96P UL1007AMP2L=180mmBD-J781B517-012-2966-90CABLE ASSY 4 WAYS AWG26 2.5P UL1533AUDIOL=450MM (ROHS)BD-J3103A617-012-2957-9

24、0CABLE ASSY 2 WAYS AWG=26 2.5P UL1533DIGIT BD-L=540mm (ROHS)J1009A717-012-2961-90CABLE ASSY 3 WAYS AWG=26 X2C P=2.5DIGITAL BD-UL2854 L=110mm C33110 (RoHS)J705A817-012-2967-90CABLE ASSY 4 WAYS AWG=26 2.5PDIGITAL BD-UL2877 L=500mm (RoHS)J1010A917-012-2956-90CABLE ASSY 1 WAY AWG18 UL1007 BLACKKEYBOARD-

25、L=100mm W/ RING TERMINAL (RoHS)J2011017-012-3404-90CABLE ASSY 5 WAYS AWG26 2.5P UL1007LED BD-L=160mm (RoHS)J204A1117-012-2963-90CABLE ASSY 3 WAYS AWG=26 2.5P L=110mmMAIN BD-J606B1217-012-2964-90CABLE ASSY 3 WAYS AWG26X2C UL2547MAIN BD-L=210mm (UL LABEL) (RoHS)J715A1317-012-2974-90CABLE ASSY 8 WAYS A

26、WG=26X3C L=480mmMAIN BD-(RoHS)J709A1417-012-2977-90CABLE ASSY 12 WAYS AWG26 2.5P UL2468MAIN BD-L=230mm (UL LABEL) (RoHS)J502A1517-012-2978-90CABLE ASSY 14 WAYS AWG=26 2.5P UL1007MAIN BD-L=440mm (UL LABEL) (RoHS)J782B1617-012-2962-90CABLE ASSY 3 WAYS AWG=26 2.5P UL2854PO BD-L=420mm (RoHS)J611A1717-01

27、2-2972-90CABEL ASSY 6 WAYS AWG=26 2.5PPO BD-UL1533X1C L=350mm (RoHS)J612A1817-012-2965-90CABLE ASSY 4 WAYS AWG26 2.5P UL2468PS BD-L=400mm (ROHS)J753A1917-012-2958-90CABLE ASSY 3 WAYS AWG=18 3.96P UL1007SPKL=120mmBD-J801B2017-012-2960-90CABLE ASSY 3 WAYS AWG=18 3.96P UL1015SPK BD-L=320mmJ505B2117-012

28、-2968-90CABLE ASSY 5 WAYS AWG=18 3.96P UL1007SPK BD-L=350mmJ786B2217-012-2970-90CABLE ASSY 5 WAYS AWG18 UL1007SPK BD-L=300mm (V/B/Y) (UL LABEL) (RoHS)J506B2317-012-2973-90CABLE ASSY 8 WAYS AWG=26 2.5P UL1007SV BD-L=380mm (RoHS)J414A2417-012-2975-90CABLE ASSY 8 WAYS AWG=26 2.5P UL1007TR BD-L=540mm (U

29、L LABEL) (RoHS)J350A2517-012-2956-90CABLE ASSY 1 WAY AWG18 UL1007 BLACKV6 BD-L=100mm W/ RING TERMINAL (RoHS)P4401,P44022617-012-2948-90CABLE ASSY 1 WAY AWG=16 UL1672J759BROWN L=100mm2717-012-2874-90CABLE ASSY 1 WAY AWG=16 UL1672J758BLUE L=100mm2817-010-0032-90FFC CABLE 30 PINS P1.25 L=70mmJ601AW/SHI

30、ELD10ItemDatabase Part NumberDescriptionRemark2917-010-0033-90FFC CABLE 17 PINS P1.25 L=200mmJ720CW/ SHIELD3017-010-0069-90FFC CABLE 20 PINS P1.25 L=120mmJ604CW/ SHIELD3117-010-0035-90FFC CABLE 20 PINS P1.25 L=200mmJ713CW/ SHIELD3217-010-0036-90FFC CABLE 28 PIN P1.25 L=160mmJ602C,J603CW/ SHIELD3317-

31、010-0037-90FFC CABLE 28 PINS P1.25 L=200mmJ714CW/SHIELD11BLOCK DIAGRAM12SPECIAL FUNCTIONFEATUREKEYS PRESS ON FRONT PANELRESET FOR AH VERSIONVIDEO 6 + SOURCE UPRESET FOR C VERSIONVIDEO 6 + SOURCE DOWNNTSC / PAL SELECTIONVIDEO 6 + MEMORYVFD ALL DISPLAYVIDEO 6 + TONE DEFEATAM FREQ. STEPAM/FM + FM MUTEV

32、ERSION CHECKVIDEO 6 + TONE CONTROLDETAILS & WAVEFORMS ON SYSTEM TEST & DEBUGGINGT89C51RB2 (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 EPR

33、OM(W27C02) when changing SURROUND MODESLOWER - CHIP ENABLE (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 V2.12.13R522R545R571P501P801P802R835R836P502P503AMPLIFIER ADJUST

34、MENTIdle Current1.Rotate R522 fully clockwise.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.CHANNELJUMPE

35、RVRFLP501R522FRP502R545CP503R571SLP801R835SRP802R836ADJUSTMENT POINT DIAGRAMFRONT/CENTER AMPLIFIER BOARDSURROUND AMPLIFIER BOARD14PCB LAYOUTAUDIO BOARDPOWER SUPPLY (STANDBY) /POWER SWITCH15COMPOSITE VIDEO BOARD - COMPONENT SIDECOMPOSITE VIDEO BOARD - COPPER SIDE16COMPONENT VIDEO BOARD - COMPONENT SI

36、DECOMPONENT VIDEO BOARD - COPPER SIDEDIGITAL BOARD - COMPONENT SIDEDIGITAL BOARD - COPPER SIDE17DSP BOARD - COPPER SIDEDSP BOARD - COMPONENT SIDE18FRONT / CENTER AMPLIFIER BOARD19SURROUND AMPLIFIER BOARD20KEYBOARD- COMPONENT SIDE- COPPER SIDE21MAIN BOARD22MULTI-CHANNEL BOARD- COMPONENT SIDE- COPPER

37、SIDE23PRE-OUT BOARD- COMPONENT SIDE- COPPER SIDE24SPEAKER TERMINAL BOARDTRIGGER BOARDVIDEO 6 BOARDPOWER SUPPLY (SECONDARY)LED BOARD25S-VIDEO BOARD - COMPONENT SIDES-VIDEO BOARD - COPPER SIDE26SCHEMATIC DIAGRAMAUDIO SWITCHRESISTORS : UNLESS OTHERWISE SPECIFIED ARE CARBON FILM.NOTE:1. RESISTORS, UNLES

38、S 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 SPECIFIED, ARE 1/6W, 5%.2. ALL CERAMIC CAPACITORS, UNLESS OTHERWISE SPECIFIED, ARE 50V,

39、10%.28E C B2SA2878E C B2SA933DTC123ESAE 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 SPECIFIED, ARE 50V, 10%.29POWER SUPPLY (SECONDARY)NOTE:1. RESISTORS, UNLESS OTHERWI

40、SE SPECIFIED, ARE 1/6W, 5%.2. COMPONENTS MARKED ARE SAFETY CRITIAL PARTS.30POWER SUPPLY (STAND BY)E C B2SC1815RESISTORS : F-FUSIBLE, UNLESS OTHERWISE SPECIFIED ARE CARBON FILM.NOTE:1. RESISTORS, UNLESS OTHERWISE SPECIFIED, ARE 1/6W, 5%.2. COMPONENTS MARKED ARE SAFETY CRITIAL PARTS.31DTC123ESAE C BTR

41、IGGERRESISTORS : 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%.32VIDEO 6RESISTORS : UNLESS OTHERWISE SPECIFIED ARE CARBON FILM.NOTE:1. RESISTORS, UNLESS OTHERWISE SPECIFIED, A

42、RE 1/6W, 5%.2. ALL CERAMIC CAPACITORS, UNLESS OTHERWISE SPECIFIED, ARE 50V, 10%.33E C B2SA933E C B2SC1740E C B2SC18152SC2878DTC144ESADTC123ESAE C BS-VIDEORESISTORS : UNLESS OTHERWISE SPECIFIED ARE CARBON FILM.NOTE:1. RESISTORS, UNLESS OTHERWISE SPECIFIED, ARE 1/6W, 5%.2. ALL CERAMIC CAPACITORS, UNLE

43、SS OTHERWISE SPECIFIED, ARE 50V, 10%.34E C B2SA10162SC2362B C E2SA16062SC4159B C E2SA20312SC5669E C B2SB772E C B2SD600DTC123ESAE C BFRONT / CENTER AMPLIFIERNOTE:1. RESISTORS, UNLESS OTHERWISE SPECIFIED, ARE 1/6W, 5%.2. ALL CERAMIC CAPACITORS, UNLESS OTHERWISE SPECIFIED, ARE 50V, 10%.3. COMPONENTS MA

44、RKED ARE SAFETY CRITIAL PARTS.RESISTORS : RN-CERAMIC CASE, MO-METAL OXIDE, UNLESSOTHERWISE SPECIFIED ARE CARBON FILM.35SURROUND AMPLIFIERE C B2SC2362B C E2SA16062SC4159B C E2SA20312SC5669E C B2SD600K2SD631KDTC123ESAE C BE C B2SA1016K2SC2362RESISTORS : RN-CERAMIC CASE, MO-METAL OXIDE, UNLESS OTHERWIS

45、E SPECIFIED ARE CARBON FILM.NOTE:1. RESISTORS, UNLESS OTHERWISE SPECIFIED, ARE 1/6W, 5%.2. ALL CERAMIC CAPACITORS, UNLESS OTHERWISE SPECIFIED, ARE 50V, 10%.3. COMPONENTS MARKED ARE SAFETY CRITIAL PARTS.36SPEAKER A & BRS-23237DIGITAL IN & OUT38E B C2SD600KMAIN BOARDNOTE:1. RESISTORS, UNLESS OTHERWISE

46、 SPECIFIED, ARE 1/6W, 5%.2. ALL CERAMIC CAPACITORS, UNLESS OTHERWISE SPECIFIED, ARE 50V, 10%.39PRE-OUTNOTE:1. RESISTORS, UNLESS OTHERWISE SPECIFIED, ARE 1/6W, 5%.2. ALL CERAMIC CAPACITORS, UNLESS OTHERWISE SPECIFIED, ARE 50V, 10%.40E C B2SC1815DSPNOTE:1. RESISTORS, UNLESS OTHERWISE SPECIFIED, ARE 1/

47、6W, 5%.2. ALL CERAMIC CAPACITORS, UNLESS OTHERWISE SPECIFIED, ARE 50V, 10%.41E C B2SC1815E C B2SC1015KEYBOARDNOTE:1. RESISTORS, UNLESS OTHERWISE SPECIFIED, ARE 1/6W, 5%.2. ALL CERAMIC CAPACITORS, UNLESS OTHERWISE SPECIFIED, ARE 50V, 5%.42E C B2SC2878E B CSS8050SS8550DTA114ESADTC114ESAE C BMULTI-CHRE

48、SISTORS : 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%.4312345678910DIRA1A2A3A4A5A6A7A8GND20191817161514131211VCCGB1B2B3B4B5B6B7B8(1)(2)(3)(4)(5)(6)(7)(8)(9)(11)(19)(18)(17)(

49、16)(15)(14)(13)(12)OECKD01DC1END1D2D3D4D5D6D7Q0Q1Q2Q3Q4Q5Q6Q774LVQ574DSP BOARD: U1008, U1009W27C020DSP BOARD: U1007Q0Q7CEOEA0CONTROLOUTPUTBUFFERCOREARRAYDECODERPGMVCCGNDVPPA17312224IC BLOCK DIAGRAM74LVC245DSP BOARD: U1002, U1003, U101474VHC245KEYBOARD: U209NJM4560DSP BOARD: U1011U1013, U1023 & U1025

50、MULTI-CHANNEL: U604, U605PRE-OUT BOARD: U609, U610, U612,U614, U6151A- +2348765B+ -CS4228AKSDSP BOARD: U102144 74HCU04DIGITAL BOARD: U1201 & U1202COMPONENT VIDEO: U43041A1Y2A2Y3A3YGND12345671413121110986AVCC6Y5A5Y4A4YCS49326DSP BOARD: U100174HC157DSP BOARD: U1004115SELECTSTROBE21A1B41Y352A2B72Y6113A