NAD-M2-pwr-sm维修电路原理图.pdf

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1、LAUNAMECIVRES LAUNAMECIVRES M2 C/AH ? NAD 2010NAD 2010 NAD ELECTRONICS INTERNATIONAL TORONTO M2HA/C Direct Digital Amplifier Direct Digital Amplifier M2HA/C Direct Digital Amplifier RadioFans.CN 收音机爱 好者资料库 CONTENTS FRONT PANEL/REAR PANEL VIEW? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?

2、? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?3 SPECIFICATIONS? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 4 TROUBLE SHOOTING? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 5-6

3、 SCHEMATIC DIAGRAM? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?7-22 PCB LAYOUT? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 23-34 ELECTRICAL PARTS LIST? ? ? ? ? ? ?

4、 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?35-63 EXPLODED VIEW? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 64-65 EXPLODED VIEW PARTS LIST? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?

5、 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?66 PACKING DIAGRAM? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 67 PACKING PARTS LIST? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?

6、 ? ? ? ? 68 DISMANTLING AMPLFIIER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69-72 IMPORTANT FINAL PROCEDURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72 SERVICE SAFETY PRECAUTIONS 1. Replacing the Fuses CAUTION: FOR CO

7、NTINUED PROTECTION AGAINST THE RISK OF FIRE REPLACE ONLY WITH SAME TYPE OF FUSE. REFERENCE NO.PART NUMBERDESCRIPTION Rear Panel AC Inlet A20-12103-00Littelfuse618 T10AL/250V POWER SUPPLY Board Upper FUSE701A20-12102-00Littelfuse618 T1AL/250V POWER SUPPLY Board Lower FUSE800A20-12312-02Littelfuse618

8、T3.15AL/250V 2. Safety-check out (North American model only) Before returning the product to the customer, make leakage current or resistance measurements to determine that exposed parts are acceptably insulated from the supply circuit. Parts marked with the symbolare critical with regard to the ris

9、k of fire and electric shock.Replace only parts recommended by the manufacturer. RadioFans.CN 收音机爱 好者资料库 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? RadioFans.CN 收音机爱 好者资料库 ANALOG INPUT (BALANCED, SINGLE-ENDED) Input impedance

10、 36 k/200 pF Input sensitivity 296 mV (ref.100W) 418 mV (ref. rated power) Maximum input level 5.6 Vrms (at -9dB level trim setting) Frequency response (A/D Converter section) 0.3dB (ref. 10 Hz - FS/2; FS = 48 kHz, 96 kHz, 192 kHz) DIGITAL INPUT (COAXIAL, OPTICAL, AES/EBU) Input impedance 75 (coaxia

11、l) 110 (AES/EBU) Sample rate 32 kHz to 192 kHz GENERAL SPECIFICATIONS Continuous output power (ref. 20 Hz 20 kHz, rated THD+N) - 8 200W 4 250W 2 300W Rated distorsion (SMPTE/CCIF IM, T.I.M distortion) 0.01% (ref. 100mW - rated power) Rated distortion (THD+N, with AES17 and AP passive 20kHz LP filter

12、s) 250W (ref. 1 kHz, 8, 0.1% THD) IHF Dynamic power - 8 300W 4 450W 2 600W Maximum output current 27A Signal/Noise ratio 95dB (A-weighted, ref. 1W) 118dB (A-weighted, ref. 200W) Damping factor 2000 (ref. 20Hz - 200Hz) Frequency response 0.3dB (ref. 10 Hz - FS/2; FS = 32 kHz, 96 kHz, 192 kHz) Channel

13、 separation 90dB (ref. 10 kHz, 4 , 1/3 rated power) Power Consumption Normal operation 500W (ref. 100 - 240V AC 50/60 Hz) Standby power 1W Idle power 100W DIMENSION AND WEIGHT Dimensions (W x H x D) 435 x 133 x 454 mm (Net) 435 x 148 x 502 mm (Gross*) Net weight 20.2 kg Shipping weight 25.8 kg * - G

14、ross dimensions include feet, volume knob and extended speaker terminals. RadioFans.CN 收音机爱 好者资料库 board Check PSUA FUSE701 YES Check PSUA Check DSP Board 5VDS RIGHT? Check IC700 IC701 YES Check cable from PSUA to DSP NONO Amber LED ON? No Power or Power shuts off immediately 3V3 RIGHT? NONO Short ci

15、rcuit of 3V3?Replace U106 Check U110 U301 U302 Check IC523 Check 108M MCLK Check U131 U118 U120 YES Check Q104 Q401 Check D402 YES NAD M2 shown on VFD? SPICS SPIBC SPID YES NO +/-53VL&R to AMP board correct after PSUA YES +7.5V -5V on AMP board right? YES NO3V3 3V3C 2V5 1V2 TO IC523 RIGHT? YES U351

16、U130 YES NO signal to IC523 correct? Check IC502 IC503 IC504 IC505 Check IC507 IC508 IC509 board Check PSUB FUSE800 Check IC800 U802 Check cable from PSUB to AMP NO NO board Check AMP board IC560 IC561 Check DSP board U128 U129 Check cable from DSP to AMP K703 Click? B module to AMP board Check Fuse

17、 on Main PSU module Change failed PSU module Check cables from Main PSU RadioFans.CN 收音机爱 好者资料库 Q617 Q618 D607 RL601 YES Display Check AMP main Board Startup error ? YES Check AMP module boardNONOOutput relay open and B N41VL N41VR RIGHT? NONO Short circuit of N41VL&R?Replace IC506 IC510 Check AMP M

18、ODULE Check cable from DSP to Analog Board D602 D603 Q603 Q604 YES Check AMP feedback signal Check AMP module YES Apply signal to analog1 YES NO RS232 IR IN TRIG function correct? YES Check DSP board U111 U116 NO YES NO NO U203 U205 U206 Check Analog board U215 U216 Check analog board Finish INT boa

19、rd Check INT board U301 U302 Q301 Check cables from DSP board to display input source name Q605 Q606 Q607 Q608 Q613 Q614 Q615 Q616 C610 C611 C641 C642 D609 D610 Q611 Q612 Output correct? Apply signal to coax1 Output correct? Apply signal to analog2 Output correct? Check DSP board U126 Check analog b

20、oard RL201 RL202 U128 U350 YES RadioFans.CN 收音机爱 好者资料库 m odd 1 m odb 2 m oda 3 fst 4 fsr 5 sckt 6 sckr 7 vccs 8 gnds 9 hckt 10 vcclq 11 gndq 12 hckr 13 sdo0 14 vcchq 15 sdo1 16 sdo2i3 17 sdo3i2 18 sdo4i1 19 sdo5i0 20 vccs 21 gnds 22 ss 23 m osi 24 m iso 25 sck 26 hreq 27 pint 28 reset 29 nc 30 vccp

21、31 pcap 32 gndp 33 extal 34 vcchq 35 gndq 36 vccql 37 ta 38 cas 39 wr 40 rd 41 vccc 42 gndc 43 aa1 44 aa0 45 a0 46 a1 47 vcca 48 gnda 49 a2 50 a3 51 a4 52 a5 53 a6 54 vcca 55 gnda 56 a7 57 a8 58 a9 59 a10 60 vccqh 61 a11 62 vcca 63 gnda 64 gndq 65 vcclq 66 a12 67 a13 68 a14 69 a15 70 vcca 71 gnda 72

22、 a16 73 a17 74 d0 75 d1 76 d2 77 d3 78 vccd 79 gndd 80 d4 81 d5 82 d6 83 d7 84 nc 85 nc 86 vcclq 87 gndq 88 vcchq 89 nc 90 gpio0 91 vccs 92 gnds 93 gpio1 94 gpio2 95 gpio3 96 tdo 97 tdi 98 tck 99 tms 100 U116 DSPB56364FU100 dgnd 3v3swp R147 10k dgnd dgnd dsprst dspbck dsplrck dspdi dspdo dspmosi dsp

23、miso dspsck dsphreq dspss C151 2n7 COG C150 100n 3v3swp dgnd dgnddgnddgnd dgnd dgnd dgnd dgnd dgnd dgnd dgnd dgnd dgnd dgnd 3v3swp 3v3swp3v3swp 3v3swp 3v3swp 3v3swp 3v3swp 3v3swp3v3swp 3v3swp 3v3swp 3v3swp 3v3swp 3v3swp C144 100n C145 100n C146 100n C147 100n C148 100n 3v3swp dgnd distributeonfour s

24、ides of dspchip R127 120R dspftb T104 dgnd tm s 1 tck 2 tdi 3 tdo 4 /rst 5 cp1- 6 cp1+ 7 cp0- 8 cp0+ 9 agnd 10 av+ 11 vref 12 agnd 13 av+ 14 vrefd 15 vref0 16 vref2 17 ai0 18 ai1 19 ai2 20 ai3 21 ai4 22 ai5 23 ai6 24 ai7 25 x1 26 x2 27 monen 28 p1.7 29 p1.6 30 p1.5 31 p1.4 32 p1.3 33 p1.2 34 p1.1 35

25、 p1.0 36 vdd 37 dgnd 38 p2.7 39 p2.6 40 p2.5 41 p2.4 42 p2.3 43 p2.2 44 p2.1 45 p2.0 46 p3.7 47 p3.6 48 p3.5 49 p3.4 50 p3.3 51 p3.2 52 p3.1 53 p3.0 54 p0.7 55 p0.6 56 p0.5 57 p0.4 58 p0.3 59 p0.2 60 p0.1 61 p0.0 62 dgnd 63 vdd 64 p7.7 65 p7.6 66 p7.5 67 p7.4 68 p7.3 69 p7.2 70 p7.1 71 p7.0 72 p6.7

26、73 p6.6 74 p6.5 75 p6.4 76 p6.3 77 p6.2 78 p6.1 79 p6.0 80 p5.7 81 p5.6 82 p5.5 83 p5.4 84 p5.3 85 p5.2 86 p5.1 87 p5.0 88 dgnd 89 vdd 90 p4.7 91 p4.6 92 p4.5 93 p4.4 94 p4.3 95 p4.2 96 p4.1 97 p4.0 98 dac1 99 dac0 100 U110 C8051F126 rx1+ 1 rx1- 2 rx2+ 3 rx2- 4 rx3+ 5 rx3- 6 rx4+ 7 rx4- 8 vcc 9 agnd

27、 10 lock 11 rxcko 12 rxcki 13 nc 14 nc 15 dgnd1 16 vdd18 17 cpm 18 /ss 19 sck 20 mosi 21 miso 22 /int 23 /rst 24 m clk 25 gp1 26 gp2 27 gp3 28 gp4 29 dgnd2 30 tx- 31 tx+ 32 vdd33 33 aeso 34 bls 35 sync 36 bcka 37 lrcka 38 sdina 39 sdouta 40 nc 41 vio 42 dgnd3 43 bgnd 44 sdoutb 45 sdinb 46 lrckb 47 b

28、ckb 48 U111 DIX4192 J100 RCA J101 RCA R100 75RF R101 75RF C100 100nX7R C101 100nX7R J102 XLR3F 1 2 3 45 6 7 8 T100 AES/SPDIF 1:1 1 2 3 45 6 7 8 T101 AES/SPDIF 1:1 1 2 3 45 6 7 8 T102 AES/SPDIF 1:1 R102 110R DATA 1 VCC 2 GND 3 OP103 GP1FTX VCC 1 GND 2 DATA 3 OP102 GP1FRX VCC 1 GND 2 DATA 3 OP101 GP1F

29、RX VCC 1 GND 2 DATA 3 OP100 GP1FRX J103 RCA R107 205R C106 100n X7R 1 2 3 45 6 7 8 T103 AES/SPDIF 1:1 R105 93.1R input1 input2 aes/ebu opt1 opt2 loopin opt out coax out rx1+ rx1- crx2+ crx2- rx4+ dgnd C105 100n X7R C102100nX7R rx1+ rx1- rx2+ rx2- C103 100nX7R C104 100n X7R srx1+ srx1- srx2+ srx2- ae

30、so1 aeso ctx+ tx+ dgnd spa spb R103 0R C116 100n C110100n C107 100n C119 100n C137 22U/6.3V C12622u/6V3 G 1 OUT 2 IN 3 O 4 U104 ASM1117-1.8 dgnd 3v3sws 3v3sws C108 100n C135 100n C125 22u/6V3 dgnd m24mc dgnd sprst spint spmiso spmosi spsck spss dgnd adbck adlrck addat dspbck dsplrck dspdo dspdi dspg

31、p1 dspgp1 R126 120R zdat R112A100R R112B100R R112C100R R112D100R R111 100R zlrck zbck C141 100n zdat zbck zlrck zspick /cs 1 so 2 /wp 3 gnd 4 si 5 sck 6 /hold 7 vcc 8 U120 AT25XXX C123 100n dgnd dgnd 3v3 esi esck msi eess TxD RxD esck esi 12 34 56 78 910 J109 HEADER 5X2 2.54 pitch JTAG 3v3 dgnd dgnd

32、 tck tdo tdi tms R152 4k7 JTAG needed for test and in production tms tck tdi tdo zspiss a1 1 gnd 2 a2 3 y2 4 vcc 5 y1 6 U117 NC7WZ16 3v3swsC143 100n R148A120R R148B 120R R148C 120R R148D 120R dgnd dspsck dspmosi spmosi spsck dgnd zspidat C114 100n C115 100n C120 100n C121 100n 3v3 3v3 3v3 3v3 dgnd d

33、gnd dgnd dgnd 3v3 m24mb C118 100n dgndC134 22u/6V3 D100 ss12 dgnd pfdet R109 10K R110 100K 12 34 J107 HEADER 2X2 TxL RxL 3v3dgnd RxL TxL R139 100k R140 100k dgnddgnd LOG R118 10k3v3 R117 33k R116 68k dgnd 3v3 C117 100n fpenca C140 10N R141 100R R142 7k5 dgnd fpenca (place at board edge) pfdet fpencb

34、 m24ma dgnd dgnd dgnd adbck adlrck addat m24mc R120 NC R121C 82R dgnddgnd 1 23 U118A 74LCX125 4 56 U118B 74LCX125 89 10 U118C 74LCX125 Y 11 A 12 G 13 GND 7 VCC 14 U118D dsprtnen spss Tsta Tdat spmiso dspmiso Tdat rc Vfd7 Tstb Vstb fpon fpstdby R123C 120R R123D 120R fpsck fpdat R123B 120R R123A 120R

35、fpsck fpdat msi 3v3dgnd C124 100n 3v3 R119 10k 3v3sws spint dspgp2 dspgp2 bpsu55 bpsu12 psu55 psu12 stby dgnd dgnd 3.3VAO zsafe R131 0R R133 0R R132 0R R134 0R 1G 1 A1 2 1Y1 18 A2 4 1Y2 16 A3 6 1Y3 14 A4 8 1Y4 12 VCC 20 GND 10 2G 19 B1 11 2Y1 9 B2 13 2Y2 7 B3 15 2Y3 5 B4 17 2Y4 3 U109 74LCX244 dgnd

36、dgnd dgnd 3v3 C122 100n dgnd bfpsck bfpsck bfpdat bfpdat bfpTstb bfpTstb bfpVstb bfpVstb Q103 DTC114 Q104 DTC114 R138 120R R136 120R R137 120R R135 120R bfpencb bfpencb bfpTdat bfpTdat bfprc bfprc bfpVfd7 bfpVfd7 rc irin fpencb dsphreq dspftb spa spb Vstb Tstb dspss spss eess ads6 ads9 adsa1 adfs0 a

37、dfs1 adrst zspick zspiss zspiden zsafe zspidat softon Vfd7 trigin trigout fpstdby fpon stby psu12 psu15 psu55 zen sprst dsprst zspiret csrx3+ csrx3- rx3+ rx3- rx3+ rx3- C129 22U/6.3V dgnd C133 2.2U/25V X5R C113 100n C128 100U/25V VCC12S3v3sw 3v3sws dgnd C130 22u/6V3 G 1 OUT 2 IN 3 O 4 U106 ASM1117-3

38、.3 dgnd C111 100n C112 100n C131 470u/16v 3v3 R106 10R/2W Protect Q105 DTC114 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 J104 TO FPP BOARD LEDBfp LEDOfp LEDRfp dgnd dgnddgnddgnd Protect dgnd 3v3 1 2 3 4 5 6 7 8 9 10 11 12 J105 from power board 5VDS irin trigin softon trigout TxD RxD 1 1 2 2

39、3 3 4 4 5 5 6 6 7 7 8 8 9 9 10 10 11 11 12 12 13 13 14 14 15 15 J110 to INT board VCC12S3v3 dgnd 3v3 dgnd 3v3 dgnd m24m C127 22u/6V3 3v3sws dgnd 3.3VA zspiret 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 J106 To analog board dmck dadbck dadLR daddat dadfs0 dadfs1 dadrst dmck dadbck dadLR dadda

40、t dadfs0 dadfs1 dadrst dsa1 ds6 ds9 VCC12S SD0 BC0 WC0 SPIBC SPICS IPC SPID SPIRET SD0 BC0 WC0 SPIBC SPICS IPC SPIRET SPID bstby TPG4 dgnd TPG5 dgnd TPG8 dgnd TPG6 dgnd TPG2 dgnd TPG3 dgnd TPG dgnd TPG1 dgnd TP1 VCC12S VCC12S 3.3VAO 3.3VAO 3.3VAO 3v3 dgnd dgnd 3v3swp C160 100n C161 100n M1MARK M2 MA

41、RK M4 MARK M3 MARK dgnd C165 100NX7R C166 100NX7R C167 100NX7R C168 100NX7R dgnd Tsta R153 10R/2W 3v3 dgnd R156 10k3v3swp dsprtnen 3v3 R157 120R R158 120R C171 22u/6V3 G 1 OUT 2 IN 3 O 4 U121 ASM1117-33 dgnd C170 100n C169 100U/25V 3.3VA J205 RCA1-BK J200 RCA1-BK J202 XLR3F C200 1u R200 1M R242 100k

42、 R222 332R R259 56K2F C244 180pJ C201 1u R201 1M R260 56K2F C204 1u R204 1M R263 56K2F C205 1u R205 1M R264 56K2F AGND AGND AGND J201 XLR3F C202 1u R202 1M R261 56K2F C203 1u R203 1M R262 56K2F AGND AGND + + - - 2 3 1 U202A LM4562 6 5 7 U202B LM4562 R246 274R R257 549R R247 274R R243 100k R223 332R

43、C245 180pJ agnd R240 100k R220 332R C242 180pJ 2 3 1 U201A LM4562 6 5 7 U201B LM4562 R244 274R R256 549R R245 274R R241 100k R221 332R C243 180pJ agnd L L R R 1 vcom 2 8 54 U203A OPA1632 C239 2n2 C240 2n2 C250 2n7 R231 274R R232 137R R250 41R2 R251 41R2 R235 137R R219 1K 1% agnd 6 5 7 U204B OPA227 R

44、238 499R R230 274R agnd 1 vinR- 2 vinR+ 3 vcc1 4 agnd 5 agnd 6 agnd 7 agnd 8 vcc2 9 vinL- 10 vinL+ 11 agnd 12 vcomL 13 refgndL 14 vrefL 15 pcmen 16 hpfdr 17 hpfdL 18 fs0 19 fs1 20 df 21 dsden 22 moden 23 dsdmode 24 m cko 25 wcko 26 dsdclk 27 dsdR 28 dsdL 29 dgnd 30 vdd 31 data 32 bck 33 LRck 34 m ck

45、i 35 /rst 36 ovfL 37 ovfR 38 s/m 39 dgnd 40 owl1 41 owl0 42 fmt1 43 fmt0 44 dgnd 45 vrefR 46 refgndR 47 vcomR 48 U206 PCM4222 agnd agnd agnd AGND AGND vinR+ vinR- vinL+ vinL- vinL- vinL+ C257100u/6V3 C255 100u/6V3 C231 100n C234 100n C230 100n C233 100n vcomR vcomL agnd agnd adrsta adfs0a adfs1a C25

46、6 22U/6V3 C232 100n C258 22U/6V3 C259 1N AGND C251 100n admcka admcka adLRa adbka addata admck2 ADJ 1 OUT 2 IN 3 O 4 U208 ASM1117-ADJ R265 243RF R266 536R C248 22u/6V3 C254 10U/25V C260 100uF/6.3V agnd D214 S1GM4 vap adLRa adbka addata AGND admck2 R258 10k adfs0a adfs1a adrsta C241 100n AGND AGND R2

47、54 133R R234 274R R239 499R R233 274R R255 133R 1 vcom 2 8 54 U205A OPA1632 C237 2n2 C238 2n2 C249 2n7 R225 274R R226 137R R248 41R2 R249 41R2 R229 137R R218 1K 1% 2 3 1 U204A OPA227 agnd R228 274R R208 4k7 R213 4k7 R236 499R R224 274R R252 133R R237 499R R227 274R R253 133R 36 U203B OPA1632 36 U205B OPA1632 84 U202C LM4562 84 U204C OPA227 84