NAD T977 C/AH, Service Manual

Page 1: ...E C I V R E S T977 C AH DEL O M T977 L A U N A M E C I V R E S NAD 2012 NAD ELECTRONICS INTERNATIONAL TORONTO T977 H A C R E I F I L P M A L E N N A H C N E V E S T977 H A C R E I F I L P M A L E N N A H C N E V E S SEVEN CHANNEL AMPLIFIER ...

Page 2: ...ART NUMBER DESCRIPTION Rear Panel AH 20 11203 10 MDA T20AL 250V C 20 12103 20 MDA T10AL 250V AMP Board F101 F102 20 12632 00 T6 3AL 250V PSU Board F201 F204 20 12162 01 T1 6AL 250V 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 exp...

Page 3: ... 3 ...

Page 4: ...m power per channel 8 ohms 230 W 23 6 dBW 4 ohms 390 W 25 9 dBW 2 ohms 450 W 26 5 dBW Time to go to Standby mode at no input signal 30 minutes Damping factor 300 ref 8 ohms 50Hz Input Impedance R 1 Mohms C 180 pF Input sensitivity for rated output into 8 ohms 1180mV 50mV Voltage gain 29 dB Frequency response 20 Hz 20 kHz 0 2 dB 3dB at 3 Hz 100 kHz Signal Noise ratio A weighted 96 dB ref 1 W 125 dB...

Page 5: ...nt voltage is 17 6mV with down limit of 13 2mV and up limit of 22mV The alignment procedure is At first adjust RV102 Marked as Idling Current ADJ in the drawing below for a voltage of 17 6mV 1mV between Test point 1 and 2 Then preheat the unit for 5 minutes let idling current settled and then readjust to 17 6mV 1mV Pls note 1 The idling current must be adjusted when all modules are assembled into ...

Page 6: ...itor the voltage at TP1 of Pot RV201 Adjust RV201 to get the voltage from negative to positive to ensure that the Fans are turned off Then run all 7 channels at 1kHz 0 5W at 4 ohms load monitor if the voltage at TP1 of Pot RV201 is negative if not adjust Pot RV201 just to the point that TP1 changes from positive to negative to get the fans just start turning Finally turn off the signal and monitor...

Page 7: ...INDDING POST J102 BINDDING POST 1 2 CONTACTS UPSIDE P602B MOLEX 52207 1690 CONTACTS UPSIDE P602B MOLEX 52207 1690 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 P101A MOLEX 41662 P101A MOLEX 41662 1 2 3 4 5 6 7 8 9 R1A 47 R1A 47 J102 BINDDING POST J102 BINDDING POST 1 2 P621B 2PIN2 54 C P621B 2PIN2 54 C 1 2 W1 W1 P101A MOLEX 41662 P101A MOLEX 41662 1 2 3 4 5 6 7 8 9 P3A MOLEX 44441 2005 P3A MOLEX 44...

Page 8: ...04 1nF C104 1nF R123 100 R123 100 Q113 2SA1312 Q113 2SA1312 Q145 2SC4793 Q145 2SC4793 CW RV101 5KA CW RV101 5KA 1 3 2 4 5 C112 1uF C112 1uF D100 1N4148 D100 1N4148 CW RV104 100K CW RV104 100K 1 3 2 Q106 2SC3324 Q106 2SC3324 R108 1K R108 1K Q107 2SC3324 Q107 2SC3324 D135 1N5404 D135 1N5404 R1A9 6 8K R1A9 6 8K R1E0 470K R1E0 470K C114 100nF C114 100nF R102 2 2meg R102 2 2meg R100 470 R100 470 R1E3 1...

Page 9: ...nF Q146 MMBT5551 Q146 MMBT5551 R162 0 22 R162 0 22 C147 22uF C147 22uF R1H3 10K R1H3 10K R184 20K R184 20K R131 1K R131 1K C137 100nF C137 100nF R179 4 7K R179 4 7K Q127 MPSA92 Q127 MPSA92 C122 100uF C122 100uF Q116 2SC1815 Q116 2SC1815 D127 1N4148 D127 1N4148 R190 20K R190 20K R132 100 R132 100 R183 220K R183 220K C121 100nF C121 100nF D111 1N4148 D111 1N4148 C145 100uF C145 100uF R147 47K R147 4...

Page 10: ... D226 1N4148 C249 2 2nF C249 2 2nF C201 10nF C201 10nF D231 1N4148 D231 1N4148 Q207 2N5551 Q207 2N5551 D205 1N4148 D205 1N4148 R280 10K R280 10K D210 8 2V D210 8 2V R2E1 1K R2E1 1K D207 1N4148 D207 1N4148 C282 100nF C282 100nF C271 100nF C271 100nF R211 470 R211 470 R258 10K R258 10K R2F6 N I R2F6 N I R2A4 10K R2A4 10K R270 43K R270 43K R265 10K R265 10K R213 10 R213 10 Q232 2SC1815 Q232 2SC1815 P...

Page 11: ...FLEX CONNECTOR DIP16 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Q306 2SA1015 Q306 2SA1015 Q325 2SA1015 Q325 2SA1015 C301 47uF C301 47uF Q319 2SC1815 Q319 2SC1815 R330 10K R330 10K R340 10K R340 10K Q313 2SC1815 Q313 2SC1815 Q323 2SA1015 Q323 2SA1015 R307 510 R307 510 R334 10K R334 10K R329 10K R329 10K D304 BL BUBB4274 D304 BL BUBB4274 Q318 2SC1815 Q318 2SC1815 Q311 2SC1815 Q311 2SC1815 Q317 2SC1815 Q...

Page 12: ...01 10u C403 10u C403 10u D403 24V D403 24V J401 PHONEJACK J401 PHONEJACK 1 2 3 4 5 R406 1K R406 1K P401B 12PIN2 0 C P401B 12PIN2 0 C 1 2 3 4 5 6 7 8 9 10 11 12 R411 1K R411 1K R405 1K R405 1K D404 24V D404 24V D405 4 7V D405 4 7V R410 1K R410 1K R409 1K R409 1K R403 26 1K R403 26 1K R407 1K R407 1K R415 1K R415 1K D401 24V D401 24V R404 26 1K R404 26 1K R413 10K R413 10K R408 1K R408 1K S401 SSSU1...

Page 13: ...3 1 W505 JUMPER W505 JUMPER 1 2 TR503 Com Inductor TR503 Com Inductor 1 3 2 5 D501 FR107 D501 FR107 TR502 292CNS TR502 292CNS 1 2 P501B KY187 P501B KY187 1 2 R503 100 R503 100 C510 100nF C510 100nF IC501 TNY274PN IC501 TNY274PN S 6 BP M 2 D 4 S 5 S 8 S 7 EN UV 1 R501 22K R501 22K D503 1N4148 D503 1N4148 BR501 B6S BR501 B6S D505 1N4148 D505 1N4148 TR501 EE16 TR501 EE16 3 8 1 7 9 10 5 6 R502 10 R502...

Page 14: ...7 8 9 10 P604B MOLEX 2145 9PIN P604B MOLEX 2145 9PIN 1 2 3 4 5 6 7 8 9 C601 100nF C601 100nF P606B MOLEX 2145 9PIN P606B MOLEX 2145 9PIN 1 2 3 4 5 6 7 8 9 R602 100K R602 100K BUS605 COPPER STRIP BUS605 COPPER STRIP BUS601 COPPER STRIP BUS601 COPPER STRIP BUS603 COPPER STRIP BUS603 COPPER STRIP P618B 12PIN2 0 A800B P618B 12PIN2 0 A800B 2 3 4 1 5 6 7 8 9 10 11 12 R604 N M R604 N M P610B MOLEX 2145 9...

Page 15: ...PIN2 54 C J901 2PIN2 54 C 1 2 TP901 115deg THERMAL CIRCUIT BREAKER TP901 115deg THERMAL CIRCUIT BREAKER 1 2 TP904 115deg THERMAL CIRCUIT BREAKER TP904 115deg THERMAL CIRCUIT BREAKER 1 2 TP903 115deg THERMAL CIRCUIT BREAKER TP903 115deg THERMAL CIRCUIT BREAKER 1 2 15 SCHEMATICS DIAGRAM ...

Page 16: ...105 Q110 R119 C153 C114 Q109 R113 R109 Q106 Q111 R118 C111 C110 D100 C109 C102 Q101 Q100 C101 R105 C103 R111 R196 R178 R114 D101 C108 R100 C100 R102 R103 R101 D120 R173 C150 R174 R176 R1A0 C140 D119 IC104 C151 R1A1 C149 R198 R199 C148 R164 D134 D133 R1A2 R108 Q104 Q108 R106 Q103 R116 R115 D130 R197 Q142 Q105 C141 R110 R112 C107 R158 R1E3 R1E2 Q145 CB101 R177 L103 C142 Q132 C172 R156 Q126 R157 C169...

Page 17: ...R2E5 D225 R2E 1D221 R271 R265 R264 R266 R274 IC203 TL084 R2E 2 C264 R2A5 R269 C260 C272 R2A8 D216 R2E8 D217 b e R2F7 Q233 R2E7 D218 R287 D219 R2F8 R291 C279 D212 R288 R289 R2A6 R290 IC204 R268 D215 R272 D214 74HC21 R285 R292 R284 R286 SEN1 R293 R296 5VD 12VD 12VD UTILISER UN FUSIBLE DE DGND RECHANGE DE MEME TYPE DGND STBYLE D SCLE D P ROT3 P ROT1 P ROT2 P OWE R STBY D227 5VD 5VD PROT1 Q240 DGND DG...

Page 18: ...R311 R339 R325 R318 R304 R312 R333 R340 R319 R326 R305 Q325 Q318Q304 Q312 D304 Q326 Q319 D305 Q310 Q302 Q324 D303 Q317Q303 Q311 R349 R344 Q333 VM1 0 2012 04 18 R329 R308 R315 R336 R322 R301 R309 R330 R337 R323 Q308 Q322 Q315 D301 Q301 Q309 Q323 D302 Q334 R350 D309 Q328 R307 R313 R334 R341 R327 R306 R320 R314 R335 R342 R328 R321 D307 Q321 Q307 Q313 Q327 D306 Q320 Q306 Q314 18 PCB LAYOUT ...

Page 19: ...977 SOFTCLIPPING TRIG Board Upper COMPONENT SIDE C401 R410 R406 R402 C402 1 D402 C404 T977 SOFTCLIPPING TRIG BOARD S401 R413 VM1 0 2012 04 26 R414 R415 R412 R408 D405D404 R404 S401 P401B C403 R403 R407 R411D403 R401 R405 D401 R409 J401 19 PCB LAYOUT ...

Page 20: ... VERSION P505B PC501 AGAINST RISK OF FIRE TYPE FUSE AND RATING CAUTION UTILISER UN FUSIBLE DE ATTENTION D501 REPLACE ONLY WITH SAME RECHANGE DE MEME TYPE FOR CONTINUED PROTECTION P505B R502 C503 D503 D502 C505 R501 TR501 IC501 C504 R505 R506 IC502 P504B P504B D504 R504 R503 L501 C506 C507 F501 T1AL 250V RL501 C502 RL501 VM2 0 2012 05 14 T977 STANDBY Board C509 C508 P506B D505 20 PCB LAYOUT ...

Page 21: ...BOARD BUS607 T977 Connection Board Upper COMPONENT SIDE BUS601 BUS603 BUS602 PROT7 STBY STBYLED 16 5VD 5VD PROT4 PROT3 PROT5 PROT6 PROT2 PROT1 P601B SEN7 16 SEN6 SEN3 SEN4 AGND SEN5 ISCTRIG_1 ISCTRIG_2 P602B ISCTRIG_3 ISCTRIG_5 ISCTRIG_4 ISCTRIG_6 1 DGND ISCTRIG_7 DGND DGND THERMAL 1 SCLED SEN1 AGND SEN2 W602 FAN3 W601 P603B C610 R614 C603 C614 C613 R610 C615 X601 R609 C612 C611 R611 R612 R613 IC6...

Page 22: ... 6V8 1 2W 33 16809 10 SOD80C D131 Zener Diode 4V7 1 2W 33 14709 10 LL34 D132 Switch Diode BAV21W 33 40021 11 SOD 123 D133 Switch Diode 1N4148W NR 33 44148 17 SOD 123 D134 Switch Diode 1N4148W NR 33 44148 17 SOD 123 D135 Recti Diode 1N5404 33 25404 00 DAX1 1N_5400 5408 D136 Switch Diode BAV21W 33 40021 11 SOD 123 D137 Switch Diode 1N4148W NR 33 44148 17 SOD 123 D138 Switch Diode BAV21W 33 40021 11 ...

Page 23: ...T23 IC IC101 Regulator NJM79M12FA 03 07912 20 TO220AB SURFACE IC102 Regulator NJM78M12FA 03 07812 20 TO220AB SURFACE IC103 Quad OPAMP TL084CD TL084CDR 03 00084 03 SOIC14 IC104 Dual OPAMP TL082CD TL082CDR 03 00082 02 SOIC8 CB101 THERMAL CIRCUIT BRAKE ST 22 90C L TYPE A07 70022 09 TO220AC SURFACE CB101 THERMAL CIRCUIT BRAKE 67L090 A03 67090 00 TO220AC SURFACE RESISTOR R100 Chip Resistor 470Ω 0805 1 ...

Page 24: ... 00 Pitch 15mm R158 Metal Oxide Film Resistor 2 2Ω 1W 5 07 30229 01 Pitch 15mm R159 Metal Oxide Film Resistor 2 2Ω 1W 5 07 30229 01 Pitch 15mm R160 Metal Oxide Film Resistor 2 2Ω 1W 5 07 30229 01 Pitch 15mm R161 Metal Oxide Film Resistor 2 2Ω 1W 5 07 30229 01 Pitch 15mm R162 Cement Resistor 0 22Ω 5W 5 07 40228 05 Pitch 35mm R163 Cement Resistor 0 22Ω 5W 5 07 40228 05 Pitch 35mm R164 Cement Resisto...

Page 25: ...7 90202 01 SM R_0805 R1P2 Chip Resistor 2KΩ 0805 1 8W 5 07 90202 01 SM R_0805 R1P3 Chip Resistor 100Ω 0805 1 8W 5 07 90101 01 SM R_0805 R1P4 Chip Resistor 100Ω 0805 1 8W 5 07 90101 01 SM R_0805 R1P5 Chip Resistor 2KΩ 0805 1 8W 5 07 90202 01 SM R_0805 R1P6 Chip Resistor 2KΩ 0805 1 8W 5 07 90202 01 SM R_0805 CAPACTIOR C100 Ceramic Capacitor SMD 180pJ 50V 0805 NPO 26 18151 01 SM C_0805 C101 Ceramic C...

Page 26: ...55 ALU Electrolytic Capacitor 10uF 100V 20 105 06 10012 01 Pitch 5mm C156 Ceramic Capacitor SMD 100nK 50V 0805 X7R 26 10451 11 SM C_0805 C157 ALU Electrolytic Capacitor 10uF 50V 20 105 06 10051 01 Pitch 5mm C158 ALU Electrolytic Capacitor 10uF 50V 20 105 06 10051 01 Pitch 5mm C159 Ceramic Capacitor SMD 1nJ 50V 0805 NPO 26 10251 11 SM C_0805 C160 Ceramic Capacitor SMD 47nK 50V 0805 X7R 26 47351 01 ...

Page 27: ...3215 0 machine screw MB3 14 61 223514 0 machine screw MB3 18 61 223518 0 bolt 61 013206 0 Washer Ф3 2 Ф10mm 厚度1 0mm 63 010310 0 PLASTIC PARTS space support 4 5 85 010001 0 ROTATE KNOB HS4 T972 B009V1 P005 73 010001 0 Q117 3 7 Heat Shrinking Tube Φ2 15 78 000020 0 Wire UL1569 26AWG L 56 5mm 14 97501 00 P N 01 97702 00 PCB2 BOARD POWER SUPPLY BOARD DIODE D201 Switch Diode 1N4148 33 44148 00 Pitch 7 ...

Page 28: ...sistor 2N5551 31 05551 02 TO92 100 ECB Q208 Transistor 2N5551 31 05551 02 TO92 100 ECB Q209 Transistor 2N5401 31 05401 03 TO92 100 ECB Q210 Transistor C1815 GR 31 01815 04 TO92 100 ECB Q211 Transistor A1015 GR 31 01015 04 TO92 100 ECB Q212 Transistor 2SB647 AWC 31 00647 00 TO92 100 ECB Q213 Transistor 2SD667 AWC 31 00667 00 TO92 100 ECB Q214 Transistor C1815 GR 31 01815 04 TO92 100 ECB Q215 Transi...

Page 29: ...etal Film Resistor 10KΩ 1 6W 5 07 20103 50 AX 200X 080 031 R232 Metal Film Resistor 10KΩ 1 6W 5 07 20103 50 AX 200X 080 031 R233 Metal Oxide Film Resistor 10KΩ 1 2W 5 07 30103 00 AX 400X 100 031 R234 Metal Oxide Film Resistor 10KΩ 1 2W 5 07 30103 00 AX 400X 100 031 R235 Metal Film Resistor 1KΩ 1 6W 5 07 20102 50 AX 200X 080 031 R236 Metal Film Resistor 1KΩ 1 6W 5 07 20102 50 AX 200X 080 031 R237 M...

Page 30: ...5 Metal Film Resistor 10KΩ 1 6W 1 07 21002 50 AX 200X 080 031 R2A6 Metal Film Resistor 10KΩ 1 6W 1 07 21002 50 AX 200X 080 031 R2A7 Metal Film Resistor 10KΩ 1 6W 1 07 21002 50 AX 200X 080 031 R2A8 Metal Film Resistor 10KΩ 1 6W 1 07 21002 50 AX 200X 080 031 R2A9 Metal Film Resistor 10KΩ 1 6W 1 07 21002 50 AX 200X 080 031 R2E1 Metal Film Resistor 1KΩ 1 6W 5 07 20102 50 AX 200X 080 031 R2E2 Metal Fil...

Page 31: ...or 2 2nF 10 250V 25 22222 00 RAD 300X 150 LS 200 034 C244 Polyester capacitor 2 2nF 10 250V 25 22222 00 RAD 300X 150 LS 200 034 C245 Polyester capacitor 2 2nF 10 250V 25 22222 00 RAD 300X 150 LS 200 034 C246 Polyester capacitor 2 2nF 10 250V 25 22222 00 RAD 300X 150 LS 200 034 C247 ALU Electrolytic Capacitor 10000uF 100V 105 20 06 10312 02 CPCYL1 D1 420 LS 880 079 C248 ALU Electrolytic Capacitor 1...

Page 32: ...J202 Connector 2 54mm 2Pin CNT M254 1 2 GS 5 6 3 N 13 12502 19 J203 Connector 2 54mm 2Pin CNT M254 1 2 GS 5 6 3 N 13 12502 19 D232 Connector 2 54mm 2Pin CNT M254 1 2 GS 5 6 3 N 13 12502 19 P203B Connector Ribbon 10P2 0 A35B 14 97310 00 PHB 2 0A 10Y P207A Connector Ribbon UL2468 24AWG 4C L 100mm 14 29004 00 PHB 2 54A 4Y P209B HOUSING 5PIN3 96 C 13 23905 00 P208B HOUSING 5PIN7 5 C 13 27505 00 P206B ...

Page 33: ...p Resistor 510Ω 0805 1 8W 5 07 90511 01 SM R_0805 R303 Chip Resistor 510Ω 0805 1 8W 5 07 90511 01 SM R_0805 R304 Chip Resistor 510Ω 0805 1 8W 5 07 90511 01 SM R_0805 R305 Chip Resistor 510Ω 0805 1 8W 5 07 90511 01 SM R_0805 R306 Chip Resistor 510Ω 0805 1 8W 5 07 90511 01 SM R_0805 R307 Chip Resistor 510Ω 0805 1 8W 5 07 90511 01 SM R_0805 R308 Chip Resistor 330Ω 0805 1 8W 5 07 90331 01 SM R_0805 R3...

Page 34: ...r 26 1KΩ 1 6W 1 07 22612 50 AX 200X 080 031 R403 Metal Film Resistor 26 1KΩ 1 6W 1 07 22612 50 AX 200X 080 031 R404 Metal Film Resistor 26 1KΩ 1 6W 1 07 22612 50 AX 200X 080 031 R405 Metal Film Resistor 1KΩ 1 6W 1 07 21001 50 AX 200X 080 031 R406 Metal Film Resistor 1KΩ 1 6W 1 07 21001 50 AX 200X 080 031 R407 Metal Film Resistor 1KΩ 1 6W 1 07 21001 50 AX 200X 080 031 R408 Metal Film Resistor 1KΩ 1...

Page 35: ... Capacitor CD286 220uF 16V 20 105 F5 0 06 22111 21 CPCYL1 D 300 LS 200 031 C510 Interfernece Suppression Cap MPX 0 1uF 275V 13mm 6mm 10 A25 10422 07 Pitch 10mm JUMPER W503 JUMPER 15mm 21 10151 00 15mm W504 JUMPER 15mm 21 10151 00 15mm W505 JUMPER 7 5mm 21 10750 00 7 5mm INDUCTOR L501 INDUCTOR 10uH 19 35980 00 AX 400X 100 031 TR501 Transformer EE16S977 Suzhou Hejia A22 00016 33 EE16 TR502 Current T...

Page 36: ...ector Socket MOLEX 2145 3215 TOP ENTRY 9PIN 26 01 1099 13 25009 00 P605B Connector Socket MOLEX 2145 3215 TOP ENTRY 9PIN 26 01 1099 13 25009 00 P606B Connector Socket MOLEX 2145 3215 TOP ENTRY 9PIN 26 01 1099 13 25009 00 P607B Connector Socket MOLEX 2145 3215 TOP ENTRY 9PIN 26 01 1099 13 25009 00 P608B Connector Socket MOLEX 2145 3215 TOP ENTRY 9PIN 26 01 1099 13 25009 00 P609B Connector Socket MO...

Page 37: ...03 AC INLET AC Inlets R 301 00 A17 07003 01 CONNECTOR Connector Ribbon 1 0mm 16pin L 230mm 14 52516 10 Connector Ribbon One terminal KST FDFD2 187 8 another terminal KST FDFD2 250 wire 16AWG 300V 105C 1672 L 600mm A14 97301 00 Connector Ribbon One terminal KST FDFD2 187 5 another terminal KST MDFN2 250 wire 16AWG 300V 105C 1672 L 600mm A14 97301 01 Connector Ribbon One terminal KST FDFD2 187 5 ano...