NAD-T175-int-sm 维修电路原理图.pdf

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1、NADSERVICE MANUALT 175T 175AV Tuner Pre-Amplifier AV Tuner Pre-AmplifierDRAFT DATE: MAY 2008RadioFans.CN 收音机爱 好者资料库2SAFETY INFORMATIONManufactured under license under U.S. Patent #s: 5,451,942; 5,956,674; 5,974,380; 5,978,762; 6,226,616; 6,487,535; 7,003,467; 7,212,872 & other U.S. and worldwide pat

2、ents issued & pending. DTS is a registered trademark & the DTS logos and Symbol are trademarks of DTS, Inc. 1996-2007 DTS, Inc. All Rights Reserved.MODELT 175 AV TUNER PREAMPLIFIERPOWER RATING 120V 60Hz 2ANAD ELECTRONICS INTERNATIONAL633 GRANITE COURT, PICKERING, ON, CANADA L1W 3K1DESIGNED & ENGINEE

3、RED IN CANADA, CUSTOM MANUFACTURED TO NAD SPECIFICATIONS IN CHINAMODELT 175 AV TUNER PREAMPLIFIERPOWER RATING 230V 50Hz 1ANAD ELECTRONICS INTERNATIONALDESIGNED & ENGINEERED IN CANADA, CUSTOM MANUFACTURED TO NAD SPECIFICATIONS IN CHINARadioFans.CN 收音机爱 好者资料库3SERVICE SAFETY PRECAUTIONS1. Replacing the

4、 fusesCAUTION:FOR CONTINUED PROTECTION AGAINST THE RISK OF FIRE REPLACE ONLY WITH SAME TYPE OF FUSE.Reference Designator Database Part Number DescriptionF8001*AH 20-001-0076-90 FUSE 1.6A 250V TIME LAG LBC 5x20mm TSD UL/CSA/VDE/SEMKO F8001*C,CT 20-001-0066-90 Fuse TIME-LAG 1A/250VAC 5X20mm TSD UL/CSA

5、/VDE/CCC (WALTER) F8002*AH 20-001-0066-90 Fuse TIME-LAG 1A/250VAC 5X20mm TSD UL/CSA/VDE/CCC (WALTER) F8002*C,CT 20-001-0068-90 FUSE TIME-LAG 500mA 250VAC 5X20mm TSD UL/CSA/VDE/CCC WALTER NOTE: : USA, CANADIAN MODEL ONLY. : EUROPEAN MODEL ONLY.2. Safety check out(Only U.S.A. model)Before returning th

6、e product to the customer, make leakage current or resistance measurements to determine that exposed parts are acceptably insulated from supply circuit.Parts marked with the symbol are critical with regard to the risk of fire and electric shock. CONTENTSDESCRIPTION PAGESPECIFICATIONS .4 - 6REAR PANE

7、L / FRONT PANEL VIEW .7DISASSEMBLY INSTRUCTIONS .8WIRING DIAGRAM .9 - 10BLOCK DIAGRAM.11SPECIAL FUNCTION .12DETAILS & WAVEFORMS ON SYSTEM & TEST & DEBUGGING.13-16 PCB LAYOUT .17- 34SCHEMATIC DIAGRAM .35-53ELECTRICAL PARTS LIST .54-72IC BLOCK DIAGRAM .73-96EXPLODED VIEW .97EXPLODED VIEW PARTS LIST .9

8、8-100PACKING DIAGRAM .1014SPECIFICATIONSPRE AMPLIFIER SECTIONRated distortion (Ext 7.1 1kHz 500mV input ,Pre-out 1V with 30kHz LPF, FL/C/FR) 0.1 % (Ext 7.1 1kHz 500mV input ,Pre-out 1V with 30kHz LPF, SL/SR/BL/BR) 0.1 %S/N Ratio (Ext 7.1 1kHz 500mV input ,Pre-out 1V with A-WTD, 1k termination, - 85

9、dB FL/C/FR/SL/SR/BL/BR)Frequency 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 Pre-out, 100 Hz) 0.5 %Crosstalk (500 mV input, ref 1V out, 1 kHz) -60 dBControlsBass (at 500 m

10、V in, ref 1V out, 100 Hz) 10 dB 2 dBTreble (at 500 mV in, ref 1V out, 100 Hz) 10 dB 2 dBDOLBY DIGITAL SECTIONChannel Difference (FL ref. Track 30) 1.2 dBFrequency Resporse at Dolby config.2 SL Track 46 200 - 20 kHz 0.8 dB SR Track 47 200 - 20 kHz 0.8 dB C Track 44 200 - 20 kHz 0.8 dBHarmonic Distort

11、ion (1 V, Audio LPF, Dolby Config 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 (31 for 100mV Pre-out, Track 35) CCIR / ARM 65 dB Audio LPF 70 dB A-wtd 70 dBDOLBY PRO LOGIC II SECTIONFrequency ResporseI/P

12、mode : L, R : 1 V in, 1V Pre-out, Ch L/R 40 Hz 0 2.0 dB 20 kHz 0 2.0 dBI/P mode : L=R : 1 V in, 1V Pre-out, Ch /L/R 40 Hz 0 2.0 dB Ch C 20 kHz 0 2.0 dBI/P mode : L=-R : 1 V in, 1V Pre-out, Ch SL/SR 40 Hz 0 2.0 dB 20 kHz 0 2.0 dBS/N Ratio (200 mV in, 100mV Pre-out, A-WTD w/ 1 k termination)I/P mode :

13、 L, R : 1 kHz, Ch 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, 100mV Pre-out, w/ 80 kHz LPF, 1kHz) 0.2 %MAX VOL PLII Music mode, 1kHz, 1Vp-p, CD in, 40 dBNOISE connect to T775 Ext 7.1, measure at T775 Spk out, with ref. to 1W S/N (L,R,C,SL,SR)5DTS

14、SECTIONOutput Level (Vol 0 dB) : FL/FR/C/SL/SR Track 6 1 kHz 200 10mVChannel Difference (FL ref) : FL/FR/C/SL/SR Track 6 1 kHz 0 1.5 dBHarmonic Distortion (Audio Filter) : FL/FR/C/SL/SR Track 10-14 1 kHz 0.08 %Frequency Response (20 Hz to 20 kHz) Track 26-30 +2/-1.5 dBSubwoofer Output Level 1 kHz re

15、f at pre-out (FL) Play Track 10, change to 15 12.5 1.5 dBNOISE MEASUREMENTSurround mode noise (Preout) DVD input 1V (L 20-20kHz -72dBonly), volume -12dB, Enhanced Stereo 1 mode, A-WTD -75dB100mV Preout output referenceSurround mode noise (Subwoofer out) DVD input 1V 20-20kHz -75dB(L only), volume -1

16、2dB, Enhanced Stereo 1 A-WTD -78dBmode, 1V Preout output referenceSurround mode noise (Preout) DVD input 1V (L 20-20kHz -48dBonly), maximum volume, Enhanced Stereo 1 mode, A-WTD -50dB100mV Preout output referenceSurround mode noise (Subwoofer out) DVD input 1V 20-20kHz -67dB(L only), maximum volume

17、-12dB, Enhanced A-WTD -72dBStereo 1 mode, 1V Preout output referenceAM TUNER SECTIONInput level is expressed as the reading in open circuitof 75-ohm source impedance signal generatorUsable sensitivity (999/1000 kHz) 60 dBVS/N Ratio (5 mV in) 38 dBTHD (5 mV in) 3 %IF Rejection (450 kHz) 36 dBImage Re

18、jection (F+2xIF) 28 dBSelectivity 17 dBOutput 170 -20/+30 mVLoop sensitivity (20 dB S/N) 999/1000 kHz 66 dB 603/600 kHz 66 dB 1404/1400 kHz 66 dBFrequency Response (100 - 2.3 kHz, 5 mV) 6 dBFM TUNER SECTION *C *AHInput level is expressed as the reading in open circuitof 75-ohm source impedance signa

19、l generatorUsable sensitivity (98 MHz) 15 dB 15 dBvS/N Ratio (60 dB, IHF wtd) Mono 60 dB 60 dB Stereo 63 dB 63 dBFrequency Response (20 Hz - 15 kHz, 60 dB) 0 1.5 dB 0 1.5 dBChannel Separation (60 dB) 100 Hz 30 dB 30 dB 1 k 32 dB 32 dB 10 kHz 30 dB 30 dBAlternate Channel Selectivity (40 dB, 400 kHz)

20、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 dB6I.F. Rejection (10.7 MHz) 78 dB Pilot Suppression (98 MHz) 50 dB 50 dBTHD (60 dB, L=R 75 kHz for AH, 40 kHz Dev for C) Mono 0.5 % 0.5 % Stereo 0.5 % 0.5 %Auto-Sear

21、ch Sensitivity On 24 dB 24 dB Off 15 dB 15 dBRDS decode Sensitivity 26 dB PHYSICAL SPECIFICATIONSDimensions (Width x Height x Depth) 435 x 134 x 353 mmNet Weight 9.45 Kg (20.79 lbs)Shipping Weight 13.9 Kg (30.58 lbs)7FRONT PANELREAR PANEL / FRONT PANEL VIEWREAR PANEL1. 7.1 CH INPUT2. AUDIO PREOUT3.

22、MP DOCK4. FM,AM ANTENNA INPUT5. XM MODULE INPUT(AH) DAB MODULE INOUT(C,CT)6. RS-232 1. POWER BUTTON2. STANDBY LED3. INFO4. AM/FM/DB5. TUNER MODE6. MEMORY7. NAVIGATION AND ENTER BUTTON8. VACUUM, FLUORES CENT DISPLAY(VFD)9. REMOTE SENSOR10. VOLUME11. SOURCE12. LISTENING MODE13. TONE CONTROLS14. TONE D

23、EFEAT15. FRONT INPUT/MP16. PHONES17. FRONT INPUT JACKS18. MP/MIC INPUT7. +12V TRIGGER OUT8. IR IN/OUT9. AUDIO/VIDEO 16 IN 10. MONITOR(S-VIDEO,VIDEO)11. AUDIO/VIDEO 3/4 OUT12. ZONE 2,3,413. HDMI14. DIGITAL AUDIO IN/OUT15. COMPONENT IN/OUT 16. AC POWER INLET17. SWITCHED AC OUTLET18. POWER 8DISASSEMBLY

24、 INSTRUCTIONS1. Remove machine screws M4.0 x 8.0 (x 6pcs) from the side panels. Remove tapping screw 3.0 x 8.0 (x 4pcs) from the back panel. Refer to Figure No. 1. 2. Pull both sides of the TOP COVER slightly outwards and tilt approx. 35 and then remove in the direction as indicated. Refer to Figure

25、 No. 2. Figure No. 1Figure No. 29WIRING DIAGRAM10WIRING DIAGRAM PARTS LISTItem Database Part Number Description Remark1 17-012-3970-90 CABLE ASSY 4 WAYS AWG26 2.5P UL2468 PSU-J8002A L=600mm (RoHS) 2 17-012-3966-90 CABLE ASSY 1 WAY AWG18 UL1672 BLUE PSU-J8011 L=120mm FASTON 4.8mm (RoHS) 3 17-012-3967

26、-90 CABLE ASSY 1 WAY AWG18 UL1672 BROWN PSU-J8012 L=100mm FASTON 4.8mm (RoHS) 4 17-012-3940-90 CABLE ASSY 3 WAYS #26 2.5P UL2854 L=110 VOL BD- (ROHS) J6004A/B5 17-012-3999-90 CABLE ASSY 1 WAY AWG18 UL1007 L=100MM VOL BD-J6103A W/ HEADER (RoHS) 6 17-012-4000-90 CABLE ASSY 2 WAYS AWG18 UL1007 3.96P VO

27、L BD- L=340MM (RoHS) J1002B/J6102A7 17-012-3938-90 CABLE ASSY 1 WAY AWG18 UL1007 L=320MM DSP BD-J1002A W/ HEADER (RoHS) 8 17-012-3971-90 CABLE ASSY 20 WAYS AWG28 UL2651 L=120mm KEY BD-J2002B PCB MOUNT (RoHS) 9 17-012-3171-90 CABLE ASSY 6 WAYS AWG26 2.5P UL1533 L=160mm V6 BD-J2006B (RoHS) 10 17-012-3

28、404-90 CABLE ASSY 6 WAYS AWG26 2.5P UL1007 L=150mm V6 BD-J2005B (RoHS) 11 17-012-3936-90 CABLE ASSY 3 WAYS AWG26 2.5P UL2854 L=310 CONN#1-J9006A (RoHS) 12 17-012-3937-90 CABLE ASSY 5 WAYS AWG26 2.5P UL2854/1533 CONN#1- L=230/320 (RoHS) J9004A/J9005A13 17-012-3964-90 CABLE ASSY 3 WAYS AWG26 2.5P UL28

29、54 L=230 CONN#1- (RoHS) J9008A/B14 17-012-2924-90 CABLE ASSY 1 WAY AWG18 UL1015 BLACK MCU BD- L=260MM W/ RING TERMIMAL (RoHS) JP2004A15 17-012-3930-90 CABLE ASSY 4 WAYS AWG26 2.5P UL1533 L=160mm MCU VD-J2008A (RoHS) 16 17-010-0122-90 FFC CABLE 17 PINS P1.25 L=360MM 15 & 16 PINS TUNER-J6003A VOID (Ro

30、HS) 17 17-012-2875-90 Cable assy 1 way AWG=16 UL 1015 Green/Yellow CHASSIS GND, L=100mm(RoHS) AC OUTLET GND18 17-012-3938-90 CABLE ASSY 1 WAY AWG18 UL1007 L=320MM TUNER-J9104A W/ HEADER (RoHS) 19 17-012-3965-90 CABLE ASSY 3 WAYS AWG26 2.5P UL2547 L=500 TUNER-J2016A (RoHS) 20 17-012-3968-90 CABLE ASS

31、Y 1 WAY AWG18 UL1672 BLUE L=80mm J8015, J8017 (RoHS) 21 17-012-3969-90 CABLE ASSY 1 WAY AWG18 UL1672 BROWN L=80mm J8013, J8016 (RoHS) 22 17-012-3972-90 CABLE ASSY 26 WAYS AWG28 UL2651 L=450mm J2301C (RoHS) 23 17-012-4001-90 CABLE ASSY 1 WAY AWG18 UL1007 L=420 TUNER- W/ HEADER (RoHS) J9101A,J9102A 11

32、BLOCK DIAGRAM12SPECIAL FUNCTIONFunction Keys NotesFactory Reset AH Source Down + Front/MP Factory Reset C Source UP + Front/MP Toggle IR Channel Source Down + Power Only for v1.08 or higher.Check MCU Version Source Down + Source UP For v1.03 or higher, this checks all versions.Check DSP Version Sour

33、ce Down + Listening Mode Only for v1.02 or older.Check Current Video Mode Source Down + Tone Controls MIC Test Source Down + Tone Defeat VFD Test Source Down + Display PAL/NTSC Source Down + Memory DAB/XM Source Down + Tuner Band Must cycle power before change takes effect.9k/10k Source UP + Tuner B

34、and Must reselect AM before change takes effect.XM 1kHz Test Tone Tuner Band + Tuner Mode XM must be selected first.XM Signal Strength Tuner Mode for 0.5 seconds XM must be selected first.XM Diagnostics Mode Tuner Mode for 3 seconds XM must be selected first.Check DAB Module Version Tuner Mode for 3

35、 seconds DAB must be selected first.Enter Diagnostics Mode Source Down + EnterDiagnostic Mode Down Source Down + Cursor RightDiagnostic Mode Up Source Down + Cursor LeftPower Off All Zones Power Toggle or Power Off for 3 seconds13DETAILS & WAVEFORMS ON SYSTEM TEST & DEBUGGING DSP U1007 Pin 70 - Cloc

36、k for external memory, 100MHz U1007 Pin 17 - X1001C output, 24.576MHz U1007 Pin 2 - Master clock (Analog), 12.288MHz U1007 Pin 2 - Master clock (PCM), 11.2896MHz U1007 Pin 12 Left/Right clock (Analog), 48kHz U1007 Pin 12 - Left/Right clock (PCM), 44.1kHz 14U1007 Pin 9 - Serial clock (Analog), 3.072M

37、Hz MCU U2001 Pin 12 - X2001A output, 20.000MHz HDMI U12 Pin 38 U3 output, 28.636MHz 15U9 Pin 1 DAC_HS (OSD Off), 31.48kHz U9 Pin 54 DAC_VS (OSD On, NTSC), 60Hz U9 Pin 1 DAC_HS (OSD On), 15.72kHz U9 Pin 54 DAC_VS (OSD On, PAL), 50Hz U9 Pin 54 DAC_VS (OSD Off), 60Hz U9 Pin 4 DAC_FLD (OSD Off), Idle 16

38、U9 Pin 4 DAC_FLD (OSD On, NTSC), 30Hz U9 Pin 51 PCLK (OSD On), 27MHz U9 Pin 4 DAC_FLD (OSD On, PAL), 25Hz U9 Pin 51 PCLK (OSD Off), 27MHz 17PCB LAYOUTDSP BOARD - COPPER SIDE18DSP BOARD - COMPONENT SIDE19KEY BOARD - COMPONENT SIDEKEY BOARD - COPPER SIDE20PRE-OUT BOARD- COPPER SIDE21PRE-OUT BOARD-COMP

39、ONENT SIDE22VOLUME BOARD - COPPER SIDE23VOLUME BOARD - COMPONENT SIDE24F-VIDEO BOARD - COPPER SIDEF-VIDEO BOARD - COMPONENT SIDE25MAIN BOARD -COMPONENT SIDE26MAIN BOARD -COPPER SIDE27TRIGGER BOARD - COMPONENT SIDETRIGGER BOARD - COPPER SIDE28COMPONENT BOARD-COMPONENT SIDECOMPONENT BOARD-COPPER SIDE2

40、9VIDEO BOARD - COPPER SIDEVIDEO BOARD - COMPONENT SIDE30HDMI BOARD-COPPER SIDE31HDMI BOARD-COMPONENT SIDE32CONNECTOR 1 BOARD-COMPONENT SIDE33CONNECTOR 1 BOARD-COPPER SIDE34PSU-STD BOARD-COMPONENT SIDE35SCHEMATIC DIAGRAM POWER SUPPLY(STAND BY)!POWER TRANSFORMERTO J753ATO POWERSUPPLY 2(KEYBOARD)TO POW

41、ER SWITCHBWN/WHTBLU/BLKFor F8001:UL: 1ACE: 500mAFor F8002:UL VER.: 3.9MFor R8005:UL: N.I.CE: JUMPERFOR JP8001:FOR JP8002:CE: N.I.UL: JUMPERUL: 1.6ACE: 1ACE VER.: N.I.D80011N4007D80031N4007C80030.022u50VC80024.7u50VR800110kR80053.9M1/2WM8002-AD80041N4007D80061N4007D80051N4007R80030.22 1/2W(Fusible)C8

42、0060.01u 250VJ8012J8016F8001250VJ8017M8001TO Transformer thermostat123456T8001TO5382BM8003AC OutletF8002250VJ8011R800247kC80011000p_(M)63VQ80012SC1815YJP8002JUMPER (UL)JP8001JUMPER (CE)1234J8002ATo CONN#2 J8002BD80021N4007M8002-BC8005N.I.230VJ8001A2 PIN CONNECTORR8004N.I.C8004N.I.230V12345678910J801

43、4AC INLETJ8015AC INLETJ8013AC INLETDGNDCHGNDCHGNDDGND+13VPOWER_ON+12.3V36DSP-1OPT 3OPT 1OPT 2COAX OUTOPT OUTCOAX 1COAX 2COAX 3FOR CEQ1017 DTC114EKAR1035 4.7k,C1027 10u/16V,C1026 0.1u,U1006 74HC251D,N.I. FOR CER1324 & R1325C10770.1u50VC10790.1u50VC107610u16VC107810u16VR1075N.I.C103410u16VC10350.1u50V

44、C10370.1u50VC10360.1u50V1234567891011121314J1104AJTAGR1062100R1063N.I.C1040N.I.50VR1046120R1044 120R1043120R104133R104033R103933R103833R103733R1045120R104212012345678910111213141516171819202122232425262728293031323334353637383940414243444546J1101ATo CONN#1 J1101BC107110u16VC10700.1u50VL100810uHV+NCO

45、UTGNDX1001BN.I.R104991k1VSS12AHCLKX0/23AMUTE04AMUTE15AHCLKX16VSS67ACLKX18CVDD89ACLKR110DVDD1011AFSX112AFSR113VSS1314RESET15VSS1516CVDD1617CLKIN18VSS1819TMS20CVDD2021TRST22OSCVSS23OSCIN24OSCCOUT25OSCVDD26VSS2627PLLHV28TDI29TDO30VSS3031DVDD3132EMU033CVDD3334EMU135TCK36VSS37EM_CAS38EM_WE39EM_WE_DQM040V

46、SS4041EM_D742DVDD4243EM_D644CVDD4445EM_D546EM_D447VSS4748EM_D349EM_D250DVDD5051EM_D152EM_D053CVDD5354VSS5455EM_D1556EM_D1457CVDD5758EM_D1359EM_D1260DVDD6061EM_D1162VSS6263EM_D1064EM_D965CVDD6566EM_D867EM_WE_DQM168DVDD6869VSS6970EM_CLK71EM_CKE72VSS7273DVDD7374EM_A1175EM_A976EM_A877CVDD7778VSS7879EM_A

47、780EM_A681DVDD8182VSS8283EM_A584EM_A485CVDD8586EM_A387VSS8788EM_A289EM_A190CVDD9091EM_A092DVDD9293EM_A1094EM_BA195VSS9596EM_BA097EM_CS098EM_RAS99VSS99100EM_CS2101CVDD101102EM_RW103DVDD103104EM_OE105SPI0_ENA106VSS106107SPI0_SCS108SPI0_CLK109VSS109110SPI0_SIMO111SPI0_SOMI112DVDD112113AXR00114VSS114115

48、AXR01116AXR02117AXR03118VSS118119AXR04120AXR05121AXR06122AXR07123CVDD123124VSS124125DVDD125126AXR08/15127AXR09/14128CVDD128129VSS129130AXR010/13131AXR011/12132CVDD132133VSS133134AXR012/11135AXR013/10136DVDD136137AXR014/21138AXR015/20139ACLKR0140VSS140141AFSR0142ACLKX0143AHCLKR0/1144AFSX0U1001TMS320D

49、A708147U1018-G74HCU04147U1019-G74HCU04C10490.1u50VC1041N.I.50VC10510.1u50VC106910u16VC1042100p50VR1067N.I.C10430.01u50VR10683kC10441000p50VC1045AN.I.63VL100910uH1RXP32RXP23RXP14RXP05RXN6VA7AGND8FILT9RST10RXP411RXP512RXP613RXP714AD0/CS15AD1/CDIN16SCL/CCLK17SDA/CDOUT18AD2/GPO219GPO120GPO021VL22DGND23V

50、D24RMCK25OMCK26SDOUT27OSCLK28OLRCKU1002CS8416R106147kC1039330p50VR106610kC10380.01u 50VC1054470u10VR1076N.I.J1022J1021GNDOUTINU1020LM1117 - 3.3C105210u16VC1050470u10VC1048470u10VR10472.2kS1001RESET BUTTONR105020k1RESET2GND3MR4PFI5PFO6VDDU1021TPS31031VDD12DQ03VDDQ34DQ15DQ26VSSQ67DQ38DQ49VDDQ910DQ511D