NAD-S250-pwr-sm维修电路原理图.pdf

SERVICE MANUALS250 S250 FIVE CHANNEL POWER AMPLIFIER FIVE CHANNEL POWER AMPLIFIER RadioFans.CN 收音机爱 好者资料库 CONTENTS FRONT PANEL / REAR PANEL VIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 ALIGNMENT PROCEDURE / ALIGNMENT POINTS . . . . . . . . . . . . . . . . . . . . . . . . 5 WIRING DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 PCB LAYOUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-8 SCHEMATIC DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-11 ELECTRICAL PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-14 EXPLODED VIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 EXPLODED VIEW PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 PACKING DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 SERVICE SAFETY PRECAUTIONS 1. Replacing the Fuses CAUTION: FOR CONTINUED PROTECTION AGAINST THE RISK OF FIRE REPLACE ONLY WITH SAME TYPE OF FUSE. REFERENCE NO.PART NUMBERDESCRIPTION PSU Board F1*AH 5120-0506-012.5A 250V Time Lag 6.3x32mm UR F1*C 5120-0025-06.3A 250V HBC Time Lag 5x20mm SEMKO/VDE Amp Board F1-F2*AH 5120-0040-06.3A 250V Time Lag 5x20mm UL F1-F2*C 5120-0025-0 6.3A 250V HBC Time Lag 5x20mm SEMKO/VDE NOTE: *AH : North American version only *C : European version only 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 symbol are critical with regard to the risk of fire and electric shock. Replace only with parts recommended by the manufacturer. ! ! ! ! ! RadioFans.CN 收音机爱 好者资料库 1. LEVEL CONTROL5. 12V TRIGGER INPUT 2. INPUT JACK6. SPEAKER TERMINALS 3. SOFT CLIPPING SWITCH7. AC INLET 4. AUTO TRIGGER SWITCH Five Channel Power Amplifier S250 3412 NAD SOFT CLIPPINGPROTECTION 1. POWER SWITCH3. PROTECTION INDICATOR 2. POWER INDICATOR4. SOFT CLIPPING INDICATOR FRONT PANEL / REAR PANEL VIEW FRONT PANEL CONTROLS The graphic symbol of a lightning flash with an arrow point within a triangle signifies that there is dangerous voltage within the unit and it posses a hazard to anyone removing the cover to gain access to the interior of the unit. Only qualified service personnel should make such attempt. The graphic symbol of an exclamation point within an equilateral triangle warns a user of the device that it is necessary to refer to the instruction manual and its warnings for proper operation of the unit. REAR PANEL CONNECTIONS AC MAINS INPUT 120V TRIGGER IN+12V AUTO TRIGGER 21345 67 1 RadioFans.CN 收音机爱 好者资料库 RETURN TO CONTENTS SPECIFICATIONS Specifications are measured in accordance with IHF standard IHF-A-202, 1978. NOMINALLIMIT 1. THD #0.02%#0.03% 2. Continuous Power Output 8 ohms$125W$100W 20kHz, 5 ch. for 8 ohms, 4 ch. for 4 ohms)4 ohms$125W$100W 3. Clipping Power $135W$110W 4. S/N Ratio A-wtd$96dB$93dB maximum)Audio BPF$89dB$86dB 5. Frequency Response 0 -0.1dB0 -0.25dB 6. Input Sensitivity 100 2 mV100 3 mV maximum) 7. Channel Separation 1kHz$77dB$70dB 20kHz$67dB$50dB 8. Soft Clipping Output Reduction 0.4 0.6 dB0.3 1.0 dB THD 5 6.5%4 10% RadioFans.CN 收音机爱 好者资料库 RETURN TO CONTENTS R44 R40 R41 TP1 TP2 RELAY R27 J1 R45 IDLE CURRENT ALIGNMENT FOR EVERY POWER AMPLIFIER MODULE 1. Remove the load and the input signal. 2. Connect a digital voltmeter between TP1 and TP2. 3. Switch the amplifier on and, after one minute, adjust R27 to obtain a reading of 5mV 0.5mV. 4. Leave power on for 3 minutes to allow the idle currents to stabilize. Re-adjust R27 as necessary to obtain a reading of 4.4mV 0.5mV. ALIGNMENT PROCEDURE ADJUSTMENT POINTS RadioFans.CN 收音机爱 好者资料库 RETURN TO CONTENTS WIRING DIAGRAM J2 J3 +J4 - + J11 CHANNEL 5 AMP BOARD 1 J2 J3 +J4 - + J11 CHANNEL 4 AMP BOARD 1 J2 J3 +J4 - + J11 CHANNEL 3 AMP BOARD 1 J2 J3 +J4 - + J11 CHANNEL 2 AMP BOARD 1 J2 J3 +J4 - + J11 CHANNEL 1 AMP BOARD 1 PSNPSL S1 S2 S3 S4 S5 S6 M1 M2 M3 M4 M5 M6 SS1SS2 1 11 1 1 1 J18J17J19 J5 J4J3J2J1 RED BLK BLU BRN WHT YEL GRN-YEL (230V ONLY) GRY ORN VIO GRY ORN VIO RED BLK BLU BRN WHT YEL YEL YEL BRN (230V)BRN (230V) BRN BLU BLU (230V) BLU (230V) RED WHT BLK RED RED WHT BLK RED RED WHT BLK RED RED WHT BLK RED RED WHT BLK RED S1S2S3S4S5S6 M1M2M3M4M5M6 REDBLKBLUBRNWHT120V 230V 120V 230V BRNBLKWHTREDBLU BLKWHTREDBLUBRN BLKWHTREDBRNBLU MAIN TRANSFORMER STANDBY TRANSFORMER BLKREDBLKREDBLKREDBLKREDBLKRED LEN AC INLET EMI FILTER POWER SWITCH STANDBY TRANSFORMER MAIN TRANSFORMER PSU BOARD TRIGGER SWITCH BOARD PWR LED BD PROT/SC LED BD J26 J27J28 J22 J24 J25 BLU (120V) BRN (120V) CHASSIS RadioFans.CN 收音机爱 好者资料库RETURN TO CONTENTS PSU BOARD - COMPONENT SIDE PSU BOARD - SOLDER SIDE RadioFans.CN 收音机爱 好者资料库 Enter 200 to ZOOM RETURN TO CONTENTS PCB LAYOUT AMP BOARD - COMPONENT SIDEAMP BOARD - SOLDER SIDE RadioFans.CN 收音机爱 好者资料库 RETURN TO CONTENTS F1 T6.3A 250V SEMKO/VDE SW1 R102 33 C2 0.1u C3 0.1u C8 33000uF/80V C1 47nF 250V C4 0.1u C6 0.1u R101 6R8 1W R106 1K R103 1K C5 0.01u C7 0.01u 1 24 3 5 M101 LINE FILTER FOR 230V VERSION ONLY 1 2 AC1 AC INLET POWER SWITCH T1 MAIN POWER TRANSFORMER D1 DIO-BRIDGE1 J1 J2 J3 J4 J5 J6 J7 J8 J9 J10 1 2 3 U102A HEF4011 4 5 6 U102B HEF4011 7 8 9 10 U102C HEF4011 11 12 13 14 U102D HEF4011 J2 DC IN R107 1K SW2 AUTO POWER SW R108 10K R104 560 T102 STANDBY TRANSPORWER R105 1R C102 470u/25V 3 2 1 U103 78L05 C103 0.1u +5V C12 10u/100V C11 10u/100V R12 750R R11 750R R8 3K9 2W D105 5V6 D11 IN4745A D10 IN4745A D12 IN4745A D13 IN4745A R10 3K9 2W R6 300R FP R1 300R FP R9 390R 52 41 63 SW3 SOFT CLIPPING R7 10K 2W LED1 POWER LED2 LED CLIP LED3 PROTECT Q102 2SC1815 R112 10K C9 33000uF/80V R2 1R FP R3 1R FP R4 10K 2W R5 10K 2W C10 4.7u V+ V- V+ V- V+ 1 2 34 5 6 U101 TLP3063 Line Filter NEUTRAL LIVE FUSE T12.5A 250V UL/CSA CH1-5 V+ +VCTL V- -VCTL GND 100V IN OUT GND NP NP 1/2W 1/2W ON OFF R111 560R +5V MAIN TRANSFORMER 120V 230V M1M2M3M4M5M6 BRN BRN BLK BLK WHT WHT BLURED REDBLU STANDBY TRANSFORMER 120V 230V S1S2S3S4S5S6 BLK BLK WHT WHT RED RED BLUBRN BRNBLU D202 IN4148 D103 IN4148 D104 IN4148 D3 IN4004 D2 IN4004 PROTECT LED POWER LED PCB CILP PROTECT PCB +VCTL -VCTL CLIP SWITCH PCB Q101 TRIAC 20A KA A A K KDGND DGND +5V POWER SUPPLY RadioFans.CN 收音机爱 好者资料库 RETURN TO CONTENTS J1-1 J1-2 J1-3 J1-4 J1-5 J1-6 J1-7 J1-8 J1-9 J1-10 F1 T6.3A 250V F2 T6.3A 250V C24 0.1 C25 0.1 R63 1R Q26 MPSA06 Q25 2N6488 R65 7K5 C33 100u/16V D19 IN4744 D20 IN4744 C34 100u/16V R66 7K5 Q27 MPSA56 Q28 2N6491 R64 1R R67 2K2 R68 2K2 C35 470u/16V C36 470u/16V 1 6 7 + - U2A LM339 2 4 5 + - U2B LM339 11 10 13 + - U2C LM339 14 8 9 + - U2D LM339 12 3 U2E LM339 4 8 U1C NE5532 C37 0.1u C38 0.1u C28 0.1u C27 0.1u R57 1M R58 200K D17 IN4004 C13 22u/25V 20% D16 IN4148 R54 20K Q1 2N4403 R56 1M R61 20K R55 200K R62 20K R83 2K21 1% R72 51K ILIMIT R69 100K R70 200KD15 IN4148 C18 22u/25V D18 IN4148 +12V +12V -12V +12V AMPOUT R76 51K C20 22u/25V D22 IN4148 D21 IN4148 R73 20K R75 510K R74 20K +12V R80 825R R79 1K R81 15K 1% R78 2K21 1% R77 11K5 1% R85 100R +12V PROTECT 1W FP 20% 2% 1W FP V+ V- 20% 20% 50V50V 50V50V 1% NTC 1/2W FP 20% 20% C26 R60 D14 D234 4 4 4 PROTECT LED COM V- V+ 4 4 INSERT BUSS WIRE JUMPER 401-20003-00 FOR R22. R50 SIGNIFIES SAFETY CRITICAL COMPONENTS REFER TO THE SAFETY INFORMATION SECTION OF THE SERVICE MANUAL FOR COMPLETE INFORMATION. COMPONENTS NOT INSTALLED: C10. C12. C14. C15. C21. C26. D1. D2. D13. D14. D23. D24 R8. R20. R49. R52. R53. R60. R67. R68 AND R84. ABBREVIATION: FLAME PROOF = FP. ALL FP DESIGNATED PARTS ARE SAFTEY CRITICAL REFER TO NOTE 5. ALL CAPACTORS ARE IN MICROFARADS. 10%. 100V. ( DEFAULT VOLTAGE ) ALL RESISTORS ARE IN OHWS 1/4W 5% 7 5. 4 3. 2. 1. RYDRV AGNDGND GND AGND +VCTL -VCTL GND +12V -12V AGND AGND SCHEMATIC DIAGRAM POWER AMP 1 RadioFans.CN 收音机爱 好者资料库 RETURN TO CONTENTS PROTECT D90 IN4148 R53 330R LED1 GREEN RED R90 560R R50 2K2 R84 4K7 RYDRY C3 1u/50V 1 3 2 + - U1A NE5532 R4 2M2 R5 1K 1% AMPOUT R1 1K 1% J2 C1 120pF R71 50K C2 0.1u/50V R3 2M2 Q20 2SC2362K Q21 2SA1016K C8 10 C6 10 R86 300 R6 300 100V 100VFPFP -VCTL +VCTL Q2 2SC2362K Q3 2SC2362K R7 1K5 C4 470pF R11 182 R12 182 Q5 2SA1016K Q6 2SA1016K R17 1K5 R18 100 C5 470pF R15 182 R16 182 R13 7K15 R14 7K15 Q4 2SA1360 R10 300 R23 100K C7 68pF D3 IN4148 D4 IN4148 R25 3K9 Q7 2SC3423 R19 300 R24 100K C9 68pF R26 1K C30 0.1u /50V Q8 2SC3423 R27 1K D1D2R22 JPR FDBK R9 100R -12V +12V 1%1% 1% 1% 1%1% FP 1% CW R29 33 Q9 2N4403 R28 20K C11 22u/25V 20% R32 100 FP D5 IN3070 D6 IN3070 R87 680 Q12 2SC3423 R59 100 Q10 MPSA06 Q11 MPSA56 R33 100 R88 680 D7 IN3070 C22 0.01 R82 100 C23 0.01 R20 R8 R31 3K3 D9 IN3070 Q13 2SA1360 D8 IN3070 R30 3K3 C14 C15 Q14 2SC4793 R38 10 FP R42 10 FP R34 1K R36 100 FP Q16 2SD1975 R35 100 Q15 2SA1837 R37 100 FP R43 10 FP R39 10 FP Q17 2SB1317 1 2 3 + - R B J3 W3 C21 R48 57K6 FDBK 4 6 5 3 2 1 RL1 D12 IN4004 C17 0.1/250V R47 2R7 R46 57K6 C16 27pF Q18 2SD1975 R40 0.22R R41 0.22R R44 0.22R R45 0.22 Q19 2SB1317 C39 0.01 D10 IN4004 D11 IN4004 ILIMIT AMPOUT V- V+ W1 FP 1000V FP 5% 1/2W FP1/2W FP 1/2W 20% 2W RYDRV TEST LOCATION 11 5W 5W5W 5W 1000V 1%1% 4 444 7 4 4 4 4 TEST LOCATION 12 4 1000V 1000V 1000V 1000V 7 - 5 6 + U1B 5532 20% CHGNDGND CW B1-COLOUR AGNDCHGNDCHGND R51 Jumper D24 Jumper GND FP GND C10 4.7uF/100V GND -12V AGND POWER AMP 2 RadioFans.CN 收音机爱 好者资料库RETURN TO CONTENTS LocationPart NumberDescription POWER AMP PCB PCB ASSEMBLY 1000*AHPCB-N0920C-AMPPCB ASSY POWER AMP 1000*CPCB-N0921C-AMPPCB ASSY POWER AMP CAPACITORS C39150N-103M-5-SSCC 1KV 0.01u 20% RL C1150N-121K-5-IICC 1KV 120P 10% RL 5X5 C16150N-270K-5-IICC 1KV 27P 10% RL 5X5 C4,C5150N-471K-5-IICC 1KV 470P 10% RL 5X5 C7,C9150N-680K-5-IICC 1KV 68P 10% RL 5X5 C3153F-105J-5-NUNCM 50V 1u 5% RL 7.5X11 C22,C23153H-103J-5-MMNCM 100V 0.01u 5% RL 7X7 C24,C25153H-104J-5-TXNCM 100V 0.1u 5% RL 10.5X C2,C27,C28,C30,153I-104J-5-NMNCM 63V 0.1UF RL (7.5X7) C37,C38 C17153R-104J-5-YRMCM 250V 0.1u 5% RL C35,C36157D-477M-5-OVKCE 16V 470UF 20% RL C33,C34157E-107M-5-KUKCE 25V 100UF 20% RL C11,C13,C18,C20157F-226M-5-IUKCE 50V 22uF 20% RL 5X11 C6,C8157H-106M-5-OVHCE 100V 10u 20% RL IC U13130-2430-0IC NE5532 OP AMP PHILIPS U23131-3990-0IC LM339N QUAD OP-AMP LED D13700-4807-RGLED RED/GREEN 5.0 RELAY RL14500-0940-0RELAY 24VDC 30A RESISTOR R63,R644715-010J-2-PRMF 1/4W 1R 5% AT FP R38,R39,R42,R434715-100J-2-PRMF 1/4W 10R 5% AT FP R32,R33,R36,R374715-101J-2-PRMF 1/4W 100R 5% AT FP R344715-102J-2-PRMF 1/4W 1K 5% AT FP R774715-1152-2RMF 1/4W 11.5K 1% AT R7,R174715-152J-2-PRMF 1/4W 1.5K 5% AT FP R11,R12,R15,R164715-1820-2RMF 1/4W 182R 1% AT R28,R54,R61,R62,4715-203A-2RMF 1/4W 20K 1% AT R73,R74 R78,R834715-2211-2RMF 1/4W 2.21K 1% AT LocationPart NumberDescription R504715-222A-2RMF 1/4W 2.2K 1% AT R3,R44715-225A-2RMF 1/4W 2.2M 1% AT R6,R10,R19,R864715-301J-2-PRMF 1/4W 300R 5% AT FP R294715-330A-2RMF 1/4W 33R 1% AT R534715-331A-2RMF 1/4W 330R 1% AT R254715-392A-2RMF 1/4W 3.9K 1% AT R844715-472A-2RMF 1/4W 4.7K 1% AT R72,R764715-513A-2RMF 1/4W 51K 1% AT R754715-514A-2RMF 1/4W 510K 1% AT R904715-561A-2RMF 1/4W 560R 1% AT R46,R484715-5762-2RMF 1/4W 57.6K 1% AT R87,R884715-681A-2RMF 1/4W 680R 1% AT R13,R144715-7151-2RMF 1/4W 7.15K 1% AT R804715-8250-2RMF 1/4W 825R 1% AT R814715-9531-2RMF 1/4W 9.53K 1% AT R35,R854717-101J-2-PRMF 1/2W 100R 5% AT FP R30,R314717-332A-2RMF 1/2W 3.3K 1% AT R65,R664718-752J-2-XRMF 1W 7.5K 5% AT METAL R474719-2R7J-2-XRMF 2W 2.7R 5% AT METAL R9,R18,R59,R82471G-101A-2-ERMF 0.6W 100R 1% AT R1,R5,R21,R26471G-102A-2-ERMF 0.6W 1K 1% AT R23,R24,R69471G-104A-2-ERMF 0.6W 100K 1% AT R56,R57471G-105A-2-ERMF 0.6W 1M 1% AT R55,R58,R70471G-204A-2-ERMF 0.6W 200K 1% AT R40,R41,R44,R45474B-R22J-1-ERWR 5W 0.22R 5% AL AL05 DIODES D5-D94803-0700-2DIODE BAV21 AT D10-D12,D174804-0040-1DIODE IN4004 AL D3,D4,D15,D16,4804-1480-2DIODE 1N4148 AT D18,D21,D22,D90 D19,D204838-15V6-2DZ 1W 15V AT TEMIC TRANSISTOR Q1,Q94854-4030-5TR 2N4403 PNP HFE100-300 Q7,Q8,Q124860-0790-5TR 2SC3423 (Y) RL Q16,Q184860-0880-5TR 2SD1975 S.P RL Q17,Q194860-0890-5TR 2SB1317 S.P RL Q154860-1050-5TR 2SA1837 100-320 RL Q144860-1060-5TR 2SC4793 100-320 RL Q254860-5300-5TR 2N6488 T022B RL Q284860-5310-5TR 2N6491 T022B RL Q4,Q134860-5320-5TR 2SA1360 (Y) RL Q5,Q6,Q214860-5330-5TR 2SA1016K (G) HFE Q2,Q3,Q204860-5340-5TR 2SC2362K (G) HFE ELECTRICAL PARTS LIST RadioFans.CN 收音机爱 好者资料库 RETURN TO CONTENTS LocationPart NumberDescription Q10,Q264860-8890-0TR MPSA06 VCE 80V NS Q11,Q274860-8910-0TR MPSA56 VCE 80V NS VR VR714750-9606-1VR RK09K111 50KA LM=25mm SVR274755-1026-3-14SVR 1K EVM-31G 6mm DUST FUSE F1,F2*AH5120-0040-0FU T6.3A 250V 5X20 UL F1,F2*C5120-0025-0FU T6.3A HBC 5X20 MISCELLANEOUS J12101-2181-0CENTER HEADER 3.96MM FH1,FH24132-1011-0FUSE HOLDER TP2,TP14132-1071-0TERMINAL PIN 10074134-9241-0GROUND TERMINAL R798910-0491-0NTC THERMISTOR 1K (B) POWER SUPPLY PCB PCB ASSEMBLY 1100*AHPCB-N0920C-PSUPCB ASSY POWER SUPPLY 1100*CPCB-N0921C-PSUPCB ASSY POWER SUPPLY CAPACITORS C103150F-104K-5-IICC 50V 0.1uF 10% RL 5x5 C4-C7150N-103M-5-SSCC 1KV 0.01u 20% RL C2,C3153R-104J-5-YRMCM 250V 0.1u 5% RL C102157E-477M-5-SXKCE 25V 470UF 20% RL C11,C12157H-106M-5-OVHCE 100V 10u 20% RL C10157H-475M-5-IUCCE 100V 4.7UF 20% RL C18910-0049-0CAP400V 4700P C8,C98910-0490-0CE 80V 33000uF 20% DIODES D1024804-0010-2DIODE 1N4001 AT D2,D34804-0040-1DIODE IN4004 AL D103,D1044804-1480-2DIODE 1N4148 AT D1054837-5B61-2DZ 1/2W 5.45-5.73 ROHM D10-D134838-16V6-2DZ 1W 16V AT TEMIC D14840-7100-0BRIDGE RECTIFIER MP2540W TRANSFORMER T1021806-3520-0TRANS EI35 115/230V DC LocationPart NumberDescription TERMINAL 01032113-1144-0AC INLET J17-J19,M1-M6,PSL,2101-1231-0SPADE TERMINAL 6.3X0.8 PSN,S1-S6,SS1,SS2, J1-J52101-2171-0PCB CONN.(CENTER 3.96MM J282102-021S-0042P ST.WAFER J272102-031S-0043 PIN ST. WAFER J262102-081S-004WAFER 8P P2.5 ST. IC U1033130-0640-0IC NJM78L05A 826 U1013131-6720-0IC TLP3063 PHOTO TRIAC U1023131-6730-0IC HFE 4011BP QUADRUPLE RESISTOR R1054715-010A-2RMF 1/4W 1R 1% AT R2,R34715-100J-2-PRMF 1/4W 10R 5% AT FP R103,R106,R1074715-102A-2RMF 1/4W 1K 1% AT R108,R1124715-103A-2RMF 1/4W 10K 1% AT R1,R64715-301J-2-PRMF 1/4W 300R 5% AT FP R1024715-330A-2RMF 1/4W 33R 1% AT R94715-391A-2RMF 1/4W 390R 1% AT R104,R1114715-561A-2RMF 1/4W 560R 1% AT R1014718-6R8J-1-XRMF 1W 6.8R 5% AL METAL R4,R5,R74719-103J-1-XRMF 2W 10K 5% AL METAL R8,R104719-392J-1-XRMF 2W 3.9K 5% AL METAL R11,R12471G-751A-2-ERMF 0.6W 750R 1% AT TRANSISTOR/TRIAC Q1024860-0700-5TR 2SC1815 (G.R) RL Q1014860-5350-5TR BTA26A-600B RL FUSE F1*C5120-0025-0FU T6.3A HBC 5X20 F1*AH5120-0506-0FUSE T12.5A 250V UR HEATSINKS 11015400-9071-0HEAT SINK 11025400-9081-0HEATSINK FOR BRIDGE MISCELLANEOUS 01165200-3441-0POWER SWITCH DPST 11081660-