NAD-T187-pre-sm 维修电路原理图.pdf

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1、NADSERVICE MANUALT 187 T 187AV Surround Sound Preamp Processor AV Surround Sound Preamp Processor DRAFT DATE: MAY 2012RadioFans.CN 收音机爱 好者资料库2SAFETY INFORMATIONHDMI, the HDMI logo and High-Definition Multimedia Interface are trademarks or registered trademarks of HDMI Licensing LLC.DFDFRadioFans.CN

2、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 OF FUSE.Reference Designator Database Part Number DescriptionF8001*AH 1601100002-902000 FUSE 5*20MM TIME-LAG 1.6A 250V “ROHS” “WALTER” TSD 1.6A 250VF8001*C

3、 1601100003-902000 FUSE 5*20MM TIME-LAG 1A 250V “ROHS” “WALTER” TSD1A250VF8002*AH 1601100003-902000 FUSE 5*20MM TIME-LAG 1A 250V “ROHS” “WALTER” TSD1A250VF8002*C 1601100005-902000 FUSE 5*20MM TIME-LAG 500MA 250VAC TSD UL/CSA/ VDE/CCC “ROHS” “WALTER” TSD500MA250VF8003 1601100006-902000 FUSE TIME-LAG

4、800MA 250VAC 5X20MM TSD UL/CSA/ VDE/CCC WALTER (ROHS)F8401 1601100005-902000 FUSE 5*20MM TIME-LAG 500MA 250VAC TSD UL/CSA/ VDE/CCC “ROHS” “WALTER” TSD500MA250V NOTE: : USA CANADIAN MODEL ONLY.Parts marked with the symbol are critical with regard to the risk of fire and electric shock. CONTENTSDESCRI

5、PTION PAGESPECIFICATIONS .4 - 6REAR PANEL / FRONT PANEL VIEW .7DISASSEMBLY INSTRUCTIONS .8WIRING DIAGRAM . .9 WIRING PARTS LIST . .10BLOCK DIAGRAM.11SPECIAL KEYS .12DETAILS & WAVEFORMS ON SYSTEM TEST & DEBUGGING .13 - 19PCB LAYOUT .20 - 37SCHEMATIC DIAGRAM .38 - 51ELECTRICAL PARTS LIST .52 - 63IC BL

6、OCK DIAGRAM .64 - 75EXPLODED VIEW .76a-76bEXPLODED VIEW PARTS LIST .77 - 78PACKING DIAGRAM .79PACKING PARTS LIST .80.APPENDIX 1 .81APPENDIX 2 .82 - 844SPECIFICATIONSPRE 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 ,P

7、re-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 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 dBSubwoo

8、fer out, 500 mV in (THD at 2V Pre-out, 100 Hz) 0.5 % (S/N at 2V Pre-out, 100 Hz) 70 dB (Min. Vol. hum. 47 k w/o filter) -56 dBV (Ext. 7.1 in 6 CH A-wtd) -65 dBVCrosstalk (500 mV input, ref 1V out, 1 kHz) -60 dBControlsBass (at 500 mV in, ref 1V out, 100 Hz) 10 dB 2Treble (at 500 mV in, ref 1V out, 1

9、00 Hz) 10 dB 2Dialog (Vol. set at 6 dB, 2 kHz) 4 dB 1DOLBY 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 Distortion (1 V, Audio LPF, Dolby Config 1

10、) 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 ResponseI/P mode : L, R : 1 V in, 1V Pre-out, C

11、h 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 : L, R : 1 kHz, Ch L/R 65 dBI/P mode

12、 : 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 T787 Ext 7.1, measure at T787 Spk out, with ref. to 1W S/N (L,R,C,SL,SR)5DTS SECTIONOutput Level (Vol 0 dB) : FL

13、/FR/C/SL/SR Track 6 1 kHz 200 10 mVChannel Difference (FL ref) : FL/FR/C/SL/SR Track 6 1 kHz 0 1.0 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 0 +2/-1.5 dBSubwoofer Output Level 1 kHz ref at pre-out (FL) Play Track 10

14、charge to 15 12.5 1.5 dBNOISE MEASUREMENTSurround mode noise (Preout) DVD input 1V (L 20-20kHz -72 dBonly), volume -12 dB, Enhanced Stereo 1 mode, A-WTD -75 dB100mV Preout output referenceSurround mode noise (Subwoofer out) DVD input 1V 20-20kHz -75 dB(L only), volume -12 dB, Enhanced Stereo 1 A-WTD

15、 -78 dBmode, 1V Preout output referenceSurround mode noise (Preout) DVD input 1V (L 20-20kHz -48 dBonly), maximum volume, Enhanced Stereo 1 mode, A-WTD -50 dB100mV Preout output referenceSurround mode noise (Subwoofer out) DVD input 1V 20-20kHz -67 dB(L only), maximum volume -12dB, Enhanced A-WTD -7

16、2 dBStereo 1 mode, 1V Preout output referenceAM TUNER SECTIONInput level is expressed as the reading in open circuitof 75-ohm source impedance signal generatorUsable sensitivity (1008 kHz) 55 dBVS/N Ratio (5 mV in) 38 dBTHD (5 mV in) 3 %IF Rejection (603 kHz) 40 dBImage Rejection (1404 kHz) 48 dBSel

17、ectivity (999 or 1017 kHz) 23 dBOutput (1008 kHz) 230 -30/+60 mVLoop sensitivity (20 dB S/N) (999/1000 kHz) 66 dB (603/600 kHz) 66 dB (1404/1400 kHz) 66 dBFrequency Response (100 - 1.8 kHz, 5 mV) - 6 dBFM TUNER SECTION *C *AHInput level is expressed as the reading in open circuitof 75-ohm source imp

18、edance signal generatorUsable sensitivity (98.1 MHz) 9 dB 9 dBvS/N Ratio (60 dB, IHF wtd) Mono 65 dB 65 dB Stereo 55 dB 55 dBFrequency Response (20 Hz - 15 kHz, 60 dB) 0 3 dB 0 3 dBChannel Separation (60 dB) 100 Hz 30 dB 30 dB 1 k 30 dB 30 dB 10 kHz 20 dB 20 dBAM Suppression (60 dB, 100% Mod. FM, 30

19、% Mod. AM) 40 dB 40 dBImage Rejection (106.1 MHz) 75 dB6I.F. Rejection (90.1 MHz) 75 dB THD (60 dB, L=R 75 kHz for AH, 40 kHz Dev for C) Mono 0.7 % 0.7 % Stereo 0.1 % 0.1 %Auto-Search Sensitivity On 24 dB 24 dB Off 15 dB 15 dBRDS decode Sensitivity 33 dB Output level (98.1 MHz) 600 100 mV 600 100 mV

20、PHYSICAL SPECIFICATIONSDimensions (Width x Height x Depth) 435 x 150 x 385 mm (Gross)*Net Weight 9.6 kgShipping Weight 13.5 kg* Gross dimension includes feet, volume knob and extended rear panel terminals.7FRONT PANELREAR PANEL / FRONT PANEL VIEWREAR PANEL1. 7.1 CHANNEL INPUT2. AUDIO PRE-OUT3. FM/AM

21、 ANTENNA TERMINAL4. XM MODULE INPUT (120V version model only) DAB MODULE INPUT (230V version model only)1. STANDBY BUTTON2. STANDBY LED3. NAVIGATION and ENTER BUTTONS4. REMOTE SENSOR5. VACUUM FLUORESCENT DISPLAY (VFD)6. SOURCE7. VOLUME 8. PHONES 5. ETHERNET/LOCAL AREA NET WORK (LAN) PORT6. MP DOCK7.

22、 RS 232 8. +12V TRIGGER OUT / IN9. IR IN/IR OUT10. AUDIO 1-6/VIDEO 1-3/S-VIDEO 1-3 AUDIO 3-4 OUT11. ZONE 2-3-412. COMPONENT VIDEO INPUT 1-3 COMPONENT VIDEO OUT13. HDMI (HDMI IN 1-6 HDMI OUT 1-2)14. DIGITAL AUDIO (COAXIAL 1-3 OPTICAL 1-3) DIGITAL AUDIO OUT (OP TICAL COAXIAL)15. AC MAINS INPUT16. SWIT

23、CHED AC OUTLET17. POWER9. MEMORY10. INFO11. AM/FM/DB 12. TUNER MODE 13. LISTEN MODE14. TONE15. TONE DEFEAT16. FRONT INPUT/MP 17. FRONT INPUT PORTS 18. FRONT MP/MIC INPUTNAD T187 NAD T 187AV Surround Sound Preamp Processor T 187a SOURCE sVOLUMEMEMORYsadfINFODELETEAM/FM/DBTUNER MODELISTEN MODETONETONE

24、 DEFEAT FRONT INPUT/MP456717ABCED121314151611123181098 NAD T 187SUBWSUBW 2SUBW 1CENTERSURR-BSURRFRONTRLAUDIOPRE-OUTCENTERSURR-BSURRFRONTAUDIO 6AUDIO 5YPBPRY321PBPRYPBPRYPBPROUT AUDIO 4 INZONE 4ZONE 3ZONE 2OUT AUDIO 3 INAUDIO 2AUDIO 1ZONE 2HDMI IN 6HDMI IN 5XMDAB230V VERSION ONLYANTENNAFMGND AMHDMI I

25、N 4HDMI IN 332COAXIALOPTICAL1321HDMI IN 2HDMI IN 1HDMI OUT 2HDMI OUT 1SWITCHEDPOWER+12V TRIGGEROUT 1OUT 2INOUT 3OUT 2OUT 1INOUT 3RS-232ONAC OUTLET 120V 60Hz120W 1A MAXSWITCHEDAC OUTLET 230V 50Hz 120W 0.5A MAXOUTETHERNETMPDOCKDATA PORTOUTR7.1 CH INPUTLRAUDIOLS-VIDEOIN321VIDEOMONITOROUTVIDEOHDMIDIGITA

26、LAUDIO230V VERSION ONLY123456141778915101213168DISASSEMBLY INSTRUCTIONS1. Remove machine screws M4.0 x 8.0 (x 6pcs) from the side panels. Remove tapping screw 3.0 x 8.0 (x 3pcs) from the back panel. Refer to Figure No. 1. 2. Pull both sides of the TOP COVER slightly outwards and tilt approx. 35 and

27、then remove in the direction as indicated. Refer to Figure No. 2. Figure No. 1Figure No. 29WIRING DIAGRAM10WIRING DIAGRAM PARTS LISTItem Database Part Number Description Remark1 0600100367-902000 CABLE ASSY UL1007 AWG26 5PIN 2.5P L=400mm PSU BD-J8002A “ROHS” 2 0600100153-902000 CABLE ASSY UL1672 AWG

28、16 1PIN BLUE L=140mm PSU BD-J8011A FASTON 4.8mm “ROHS” 3 0600100154-902000 CABLE ASSY UL1672 AWG16 1PIN BROWN L=140mm PSU BD-J8012A FASTON 4.8mm “ROHS” 4 0600100150-902000 CABLE ASSY UL2854 AWG26 3PIN 2.5P L=110 “ROHS” VOLUME BD- J6004C5 0600100323-902000 CABLE ASSY UL2468 AWG26x1C 7PIN 2.5P L=240mm

29、 VOLUME BD- “ROHS” J2016A6 0600100392-902000 CABLE ASSY UL1007 AWG26 3PIN 2.5P L=230mm PCU BD-J8004A WHT/BLK “ROHS” 7 0600100321-902000 CABLE ASSY UL1007 AWG24 2PIN 2.5P L=220mm PCU BD-J8003A “ROHS” 8 0600100189-902000 CABLE ASSY UL2651 AWG28 20PIN L=120mm PCB KEY BD-J2002A MOUNT “ROHS” 9 0600100067

30、-902000 CABLE ASSY UL1533 AWG26 6PIN 2.5P L=200mm F-INPUT BD- “ROHS” J2006A10 0600100132-902000 CABLE ASSY UL1007 AWG26 6PIN 2.5P L=150mm F-INPUT BD- “ROHS” J2005A11 0600100146-902000 CABLE ASSY UL2854 AWG26 3PIN 2.5P L=310 “ROHS” CONN#1-J9006A12 06001000147-902000 CABLE ASSY UL2854/1533 AWG26 5PIN

31、2.5P CONN#1- L=230/320 “ROHS” J9004A/J9005A13 0600100158-902000 CABLE ASSY UL2854 AWG26 3PIN 2.5P L=230mm CONN#1- “ROHS” J9008A/B14 0600100352-902000 CABLE ASSY UL1007 AWG18 2PIN 3.96P L=220mm PSU BD-J9009A “ROHS” 15 0600100148-902000 CABLE ASSY UL1007 AWG18 1PIN L=320MM W/ CONN#1- HEADER “ROHS” JP9

32、001A16 0610100014-902000 CABLE ASSY FFC 11 PINS P1.25 L=280mm “ROHS” TUNER-J6003A17 0600100032-902000 CABLE ASSY UL1015 AWG16 1PIN GREEN/YELLOW 1-CHASSIS L=100mm “ROHS” GND 1-AC OUTLET GND18 0610100013-902000 CABLE ASSY FFC 19 PINS P0.5 L=400mm VM150X HDMI BLACK/ WHITE “ROHS” BD-J20419 0600100356-90

33、2000 CABLE ASSY UL1007 AWG28 3PIN 2.5P L=370mm F-HDMI BD- “ROHS” J9401A20 0600100162-902000 CABLE ASSY UL1672 AWG18 1PIN BLUE L=80mm 1-INLET/PSU “ROHS” BD 1-OUTLET/ PSU BD21 0600100163-902000 CABLE ASSY UL1672 AWG18 1PIN BROWN L=80mm 1-INLET/PSU “ROHS” BD 1-OUTLET/ PSU BD22 0600100165-902000 CABLE A

34、SSY UL2651 AWG28 26PIN L=450mm “ROHS” TRIGGER MCU BD-J2301C23 0600100148-902000 CABLE ASSY UL1007 AWG18 1PIN L=320MM W/ DSP BD-J11 HEADER “ROHS” 24 0601000366-902000 CABLE ASSY UL1007 AWG18 1PIN BLACK L=150mm F-INPUT BD- W/ RING “ROHS” END11BLOCK DIAGRAM12SPECIAL KEYSFunction Keys Notes Factory Rese

35、t Source Down + Front/MP Toggle IR Channel Source Down + Power System Info Source Down + Source Up MIC Test Source Down + Tone Defeat VFD Test Source Down + Display PAL/NTSC Source Down + Memory 9k/10k Source Up + Tuner Band Must reselect AM before change takes effect. XM 1kHz Test Tone Tuner Band +

36、 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 seconds DAB must be selected first. Enter Diagnostics Mode Source Down + E

37、nter Diagnostic Mode Down Source Down + Cursor Right Diagnostic Mode Up Source Down + Cursor Left Power Off All Zones Power Toggle or Power Off for 3 seconds 13DETAILS & WAVEFORMS ON SYSTEM TEST & DEBUGGING (T187)14151617181920PCB LAYOUTMAIN BOARD - COMPONENT SIDE21MAIN BOARD - SOLDER SIDE22KEY BOAR

38、D & PHONE BOARD - COMPONENT SIDE23KEY BOARD & PHONE BOARD - SOLDER SIDE24CONNECTION BOARD - COMPONENT SIDE25CONNECTION BOARD - SOLDER SIDE26PRE-OUT BOARD - COMPONENT SIDE27PRE-OUT BOARD - SOLDER SIDE28VOLUME BOARD - COMPONENT SIDE29VOLUME BOARD - SOLDER SIDE30VM150AV ANALOG VIDEO BOARD - COMPONENT S

39、IDE31VM150AV ANALOG VIDEO BOARD - LAYER 232VM150AV ANALOG VIDEO BOARD - LAYER 333VM150AV ANALOG VIDEO BOARD - SOLDER SIDE34PSU-STD BOARD - COMPONENT SIDEPSU-STD BOARD - SOLDER SIDE35PSU-MDC BOARD - COMPONENT SIDEPSU-MDC BOARD - SOLDER SIDE36TRIGGER BOARD - COMPONENT SIDEFRONT INPUT BOARD - COMPONENT

40、 SIDETRIGGER BOARD - SOLDER SIDEFRONT INPUT BOARD - SOLDER SIDE37FRONT HDMI BOARD - COMPONENT SIDEFRONT HDMI BOARD - LAYER 2FRONT HDMI BOARD - LAYER 3FRONT HDMI BOARD - SOLDER SIDE38AC4.8V2AC4.8V1AC8.8V4AC8.8V3AC8.8V2AC8.8V1AC17.6V2AGNDAC17.6V1BROWNBROWNBLUEBLUEORANGEORANGEVIOLETGREYVIOLETGREENADJOU

41、TINU2013LM317R20481k1/16W1%D20080-+ACAC4132D2003RS402L70V 4AC20051000u25VC20330.1u50VC20322200u25VINGNDOUTU20107812C20311000u25VC20300.1u50V-+ACAC4132D2007RS605600V 6AC20294700u25VC20280.1u50VC20252200u25VC20230.1u50VC20222200u25VINGNDOUTU20087805C20171000u25VC20160.1u50VC20210.1u50VC20201000u25VING

42、NDOUTU2007BA50BC0TC20192200u25VC20180.1u50VC20150.1u50VR201933k1/8WD2004AN.I.(Optionl, 1N4007)C2007330u50VC20100.1u50VC20084700u25V-+ACAC4132D2002RS605600V 6AC20060.1u50VGNDINOUTU20127912C20046800u35VC20030.1u50VC20020.1u50VC20016800u35VINGNDOUTU20117812C20111000u25VC20090.1u50V123456789101112131415

43、16171819202122232425262728J2007ATO CONN#1 J2007BR20240.22 1/2W_(MO)R20260.22 1/2W_(MO)R20290.22 1/2W_(MO)R20300.22 1/2W_(MO)C20340.1u_(M)63VC20350.1u_(M)63VC20360.1u_(M)63VC20370.1u_(M)63VC20380.1u_(M)63VR20250.22 1/2W_(MO)R20270.22 1/2W_(MO)R20280.22 1/2W_(MO)12345678910J2015Ato XformerJP2001N.I.D2

44、004GS1GD2005GS1GD2005AN.I.(Optionl, 1N4007)R20530.22 1/2W_(MO)R20493.3k1/16W1%C2067330u50VJP2004AWIRE W/ RING TO CHASSISJP2003A32G2001JP2003BD2009N.I.D2011N.I.D2012N.I.D2010N.I.C20682.2u50VJP2002N.I.R2054N.I.1/16W1%C2076N.I.50V12345J8002BTO PSU (STD) J8002A+5.3VDGND+15VAGND-12V_A+12V_A+39V+5V_K+12V_

45、D+5V_V+8V_V+5V_DSPDGNDDGNDDGNDDGND+5V_DSPDGND+8V_V+5V_VDGND+12V_AAGND-12V_A+5V_DSP+5V_DSP+5V_DSPDGNDDGNDDGND+8V_V+8V_V+8V_V+5V_VDGNDDGNDDGND+12V_A+12V_AAGNDAGNDAGND-12V_A-12V_AAC4.8V2AC4.8V1+5V_K+39V+12V_D+15V+13VDGNDPOWER_ONAC4.8V2AC8.8V4AC17.6V2AC17.6V1AC8.8V4AC8.8V2AC8.8V2AC29VAGNDAC8.8V1AC8.8V3A

46、C4.8V1AC8.8V4AC8.8V3AC8.8V2AC8.8V1AC17.6V2AC17.6V1DGNDAGNDMDC_POWERDGNDDGNDAGNDDGNDDGNDDGNDMDC_POWERPOWER_ON+5V_KDGND+13V+13VSCHEMATIC DIAGRAM MAIN BOARD (1)39R2017, R2018 - N.I. FOR AH, 0R FOR CENOTE:R2015, R2016 - 0R FOR AH, N.I. FOR CETO TRIGGERTO CONN#1TO CONN#1TO VOLUMER20410R2008N.I.R2007100k1

47、1A21B31Y42A52B62Y7GND83Y93A103B114Y124A134B14VCCU200574HC132C204410u16VC20430.1uR205547kC20692200u10VC20700.1u1234567891011121314151617181920212223242526J2301BTO TRIGGER J2301A12345J2008ATO HEADPHONE J2008B12345678R204510k1VCCA2GND3A4B5DIR6VCCBU201874LVC1T451VCCA2GND3A4B5DIR6VCCBU201774LVC1T45R2017S

48、EE NOTER2018SEE NOTER2015SEE NOTER2016SEE NOTE12345678910111213141516171819202122232425262728J2009ATo Conn#1 J9003A12345678910111213141516171819202122232425262728J2011ATo Conn#1 J9002A12345678R204610k1234567J2016ATO VOLUME J2016BL20010R123456J2005ATo Front Input J2005B123456J2006ATo Front Input J200

49、6BC20710.1uC207410u16VC20750.1u1VCC21Y31A42Y52A63Y73A8GND94A104Y115A125Y13NC13146A156Y16NC16U2019IC-74HC40501234567891011121314J2013AE8a ConnectorC20420.01uC20720.1uC207347u16V1P9_42P9_33P9_2/SOUT34P9_1/SIN35P9_0/CLK36BYTE7CNVSS8P8_79P8_610RESET11XOUT12VSS1213XIN14VCC115P8_5/NMI16P8_4/INT217P8_3/INT

50、118P8_2/INT019P8_120P8_0/RXD5/SCL521P7_7/CLK522P7_6/TXD5/SDA523P7_524P7_425P7_326P7_227P7_1/SCLMM28P7_0/SDAMM29P6_7/TXD1/SDA130P6_6/RXD1/SCL131P6_5/CLK132P6_433P6_3/TXD0/SDA034P6_2/RXD0/SCL035P6_1/CLK036P6_037P5_738P5_639P5_540P5_441P5_342P5_243P5_144P5_045P4_7/TXD7/SDA746P4_6/RXD7/SCL747P4_5/CLK748