NAD C 326BEE, Service Manual

Page 1: ...NAD SERVICE MANUAL C 326BEE C 326BEE Stereo Integrated Ampli er Stereo Integrated Ampli er DRAFT DATE June 2011...

Page 2: ...2 SAFETY INFORMATION 1 5A...

Page 3: ...ck out Only U S A model Before returning the product to the customer make leakage current or resistance measurements to determine that exposed parts are acceptably insulated from supply circuit Parts...

Page 4: ...WER AMPLIFIER SECTION MAIN IN SPEAKER OUT Continuous output power into 8 and 4 Stereo 50 W ref rated THD 20 Hz 20 kHz both channels driven Rated THD CCIF IMD DIM 100 0 009 ref 20 Hz 20 kHz Clipping po...

Page 5: ...ONSUMPTION Rated power 290 W ref 230V AC 50 Hz 120V AC 60 Hz Standby power 1 W Idle power 35W PHYSICAL SPECIFICATIONS Dimensions Width x Height x Depth 435 x 100 x 286 mm Net 435 x 116 x 332 mm Gross...

Page 6: ...BY LED 3 SOFT CLIPPING INDICATOR 4 REMOTE SENSOR 5 PHONES 6 MP SOCKET 7 INPUT SELECTOR 8 TONE DEFEAT 9 TONE CONTROLS 10 BALANCE 11 VOLUME 7 TAPE IN OUT 8 SUB 1 SUB 2 9 PRE OUT 10 MAIN IN 11 SOFT CLIPP...

Page 7: ...cs 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 then remove in the di...

Page 8: ...8 WIRING DIAGRAM Check these cables for damage caused by chassis lip 90SC326PREDVR 9021000 90SC326PREDVR 9021000...

Page 9: ...ASSY 15 WAYS AWG 26 2 5P UL1007 1533 VOL BD J201A L 80mm RoHS 10 17 012 4420 90 CABLE ASSY 2 WAYS AWG 16 3 96P WHI RED MAIN BD J13 UL1015 L 100mm RoHS J16 J14 J15 11 17 012 4428 90 CABLE ASSY 5 WAY A...

Page 10: ...10 BLOCK DIAGRAM...

Page 11: ...another 15 minutes 5 Re adjust VR103 Voltage across TP1 TP2 3 3 5mV 6 Re adjust VR303 Voltage across TP3 TP4 3 3 5mV B ISC adjustment 1 Turn VR304 fully anti clockwise 2 Use 500mV 1kHz sine wave CD i...

Page 12: ...12 PCB LAYOUT MAIN BOARD COPPER SIDE 90SC326PREDVR 9021000 90SC326PREDVR 9021000...

Page 13: ...13 MAIN BOARD COMPONENT SIDE 90SC326PREDVR 9021000 90SC326PREDVR 9021000...

Page 14: ...14 KEY BOARD PHONE BOARD COMPONENT SIDE KEY BOARD PHONE BOARD COPPER SIDE C528...

Page 15: ...15 PSU BOARD COMPONENT SIDE PSU BOARD COPPER SIDE...

Page 16: ...70 R360 470 C336 1N C136 1N R160 470 R159 470 Q112 MMBT5087 E C B Q115 MMBT5551 R1621K R163 1K R158 430 1 Q116 MMBT5551 C137 0 1U R155 220 C135 0 1U 20 C133 220P R156 1K5 C134 33P R1611K R164 4K7 R167...

Page 17: ...22K D311 1N4148 Q349 NZT660 C363 10U 16V Q339 MMBT5087 R419 2K2 R424 75 D321 1N4148 D320 1N4148 D327 IN4148 D326 IN4148 D325 IN4148 D324 IN4148 C349 15P Q326 MMBT5087 Q325 MMBT5087 C359 100P Q338 MMBT...

Page 18: ...D D507 DISC C510 10n Q508 MMBT5551 R515 4K7 R516 4K7 D510 1N4148 D511 1N4148 R532 10K D517 SOFT CLIPPING C514 47U 16V C513 0 1u R523 0 Q513 MMBT5551 R525 1 5K D512 1N4148 R524 10K D513 1N4148 D509 1N4...

Page 19: ...0V C607 0 1u R616 100 R617 220 D609 4V7 1 2W 1 AN 2 CA 3 EM 4 C U602 PC81713NSZ0F 1 2 3 4 5 J609 C606 2200uF 50V C605 3300uF 50V AC AC D605 DB104 400V 1A C604 10nF 250V C603 10nF 250V R613 4K7 R608 22...

Page 20: ...90 CAP CER 220pF 50V 10 SL ST2 5 RoHS C129 C134 C198 199 C329 C334 03 001 0070 90 CAP CER 33pF 50V 10 NPO TAPE C398 399 TYPE RoHS C219 C419 03 001 0071 90 CAP CER CK 4700pF 50V 10 Y5P RAD ST5 CKB1H472...

Page 21: ...NPN 1 2A 160V TO 126 FAIRCHILD RoHS Q119 Q131 Q142 Q150 Q331 Q342 Q350 05 001 0113 90 TRANSISTOR KSA1220AYSTU PNP 1 2A 160V TO 126 FAIRCHILD RoHS Q151 Q351 05 001 0115 90 TRANSISTOR PW NJW0281G NPN 1...

Page 22: ...er RoHS NJM4560M TE3 ZZZB U102 U301 302 01 014 0067 90 IC JFET SINGLE OP AMP SMD TL071CDT ST RoHS SMD RESISTORS R485 R486 R488 R495 02 007 0026 90 SMD RES 47K OHM 1 10W 5 0805 2 0X1 25X0 55 RoHS R148...

Page 23: ...R421 R474 02 007 0292 90 RES SMD 2 2K OHM 1 1 16W 0603 TAPE RoHS R174 02 007 0293 90 RES SMD 33 OHM 5 1 16W 0603 TAPE RoHS R101 R103 R105 R107 R109 R111 R113 02 007 0294 90 RES SMD 470 OHM 5 1 16W 060...

Page 24: ...9 02 007 0566 90 SMD RES 330K OHM 5 1 16W 0603 TAPE RoHS R479 02 007 0568 90 SMD RES 180K OHM 5 1 16W 0603 TAPE RoHS R376 R722 02 007 0570 90 SMD RES 390K OHM 5 1 16W 0603 TAPE RoHS R248 R252 R448 R45...

Page 25: ...327 C338 C406 03 009 0131 90 CAP CER SMD 22nF 50V 20 Y5V 0603 TAPE ROHS C213 C222 03 009 0133 90 CAP CER SMD 470pF 50V 5 NPO 0603 TAPE ROHS C168 C169 C368 C369 03 009 0157 90 CAP CER SMD 560pF 50v 10...

Page 26: ...mper wire Dia 0 5mm L 52 0mm JMP24 JMP27 29 JMP32 33 JMP36 37 RoHS JMP40 44 JMP48 JMP50 53 JMP61 64 JMP66 JMP72 74 JMP76 JMP82 JMP84 JMP88 89 JMP95 JMP98 101 JMP104 105 JMP107 109 JMP116 120 JMP126 12...

Page 27: ...5 0 SK RoHS C608 609 03 002 0195 90 E CAP 330uF 16V 20 105 C 8x12mm LOW IMPEDANCE GL KSC RoHS C603 604 03 004 0085 90 MER CAP 0 01uF 630V 103K 10 MTC P 10 TC C617 03 004 0139 90 MEX CAP 0 22uF 275VAC...

Page 28: ...90 RES SMD 2K OHM 5 1 16W 0603 TAPE RoHS R602 02 007 0448 90 RES SMD 820K OHM 5 1 16W 0603 TAPE RoHS SMD CAPACITORS C607 C615 03 009 0075 90 CAP CER SMD 0 1uF 50V 20 Y5V 0603 TAPE C619 620 03 009 011...

Page 29: ...EMI FIXED RESISTOR CF 30K OHM 30 B 6mm VERTICAL RoHS RELAY RL109 07 005 0053 90 RELAY DC12V 0 5A 125V ME 12 12 MINIATURE PCB MOUNT RoHS SMD RESISTORS R368 R372 02 007 0157 90 SMD RES 10K OHM 0603 1 Ro...

Page 30: ...5 2mm L 7104PBD RoHS CRYSTAL X501 14 002 0023 90 Crystal 20 000MHz 30ppm 32pF HC 49 S 01 CR1 02 20M000 32 3030 RoHS SMD ICS U503 0130300104820 Programmed MCU 8 BITS 8K ROM 512 900100 BYTES RAM TQFP AT...

Page 31: ...JMP11 15 JMP17 17 016 0080 90 Jumper Wire Dia 0 6mm For L Smaller JMP19 21 JMP23 25 JMP31 32 JMP37 44 than 14mm Roll RoHS JMP46 JMP48 50 JMP52 53 JMP55 56 JMP58 61 JMP64 65 JMP68 JMP70 71 JMP74 92 JMP...

Page 32: ...32 IC BLOCK DIAGRAM Mainboard NJM7805FA U104 NJM4560M U101 TL431 U103 U303 TL071CDR U102 U301 U302...

Page 33: ...33 Keyboard ATMega48 20 U503 HEF4094BT U501 U502...

Page 34: ...34 Power Supply TNY274 U601 PC817C U602...

Page 35: ...XPLODED VIEW A Note Terminal post assembly part number 50 927 0326 90 is made up of the parts 5 6 27 35 46 47 Note Power button and power button bezel are sold as one assembly 13 14 90SC326PREDVR 9021...

Page 36: ...36 EXPLODED VIEW B NSP HFE SPECIFIC...

Page 37: ...0 2P INPUT BUTTON BEZEL C326BEE 4 TITANIUM RoHS FOR TITANIUM VERSION 12 21 002 0199 90 2P INPUT BUTTON C326BEE GRAPHITE RoHS 4 FOR GRAPHITE VERSION 21 002 0205 90 2P INPUT BUTTON C326BEE TITANIUM RoHS...

Page 38: ...C326 GRAPHITE R1 RoHS 1 FOR GRAPHITE VERSION 23 237 0072 90 PLASTIC FASCIA C326 TITANIUM RoHS 1 FOR TITANIUM VERSION 42 25 008 0409 90 POWER LED LENS ROUND 2 MILKY WHITE RoHS 1 43 25 014 0030 90 RUBB...

Page 39: ...INS 125V 13A SJT AWG18 3C UL CSA 1 L 2M RoHS FOR AH VERSION 17 004 0027 90 AC CORD CE 2 PINS 16A 250V LF L 2M H05VV F 2G 1 0 75 BLACK RoHS FOR C CT VERSION 3 24 006 0992 90 POLYFOAM ENDCAP C326BEE RoH...