NAD C 541i Service Manual
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NAD C 541i Service Manual

Compact disc player
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NAD
C 541i
C O M PA C T
DISC PLAYER

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Summary of Contents for NAD C 541i

  • Page 1 C 541i C O M PA C T DISC PLAYER...

  • Page 2: Safety Information

    SAFETY INFORMATION CAUTION CAUTION VARING - INVISIBLE LASER RADIATION WHEN OPEN AND - OSYNLING LASERSTRÅLNING NÄR DENNADEL ÄR INTERLOCKS DEFEATED. AVOID EXPOSURE TO BEAM. ÖPPNAD OCH SPÄRRAR ÄR URKOPPLADE. STRÅLEN ÄR FARLIG. CLASS 1 VARO! - AVATTAESSAJASUOJALUKITUS OHITETTAESSAOLET ADVARSEL - USYNLIG LASERSTRÅLING NÅR DEKSEL ÅPNES OG ALTTIINANÄKTMÄTÖNTÄ...

  • Page 3: Table Of Contents

    SERVICE SAFETY PRECAUTIONS Replacing the fuses CAUTION: FOR CONTINUED PROTECTION AGAINST THE RISK OF FIRE REPLACE ONLY WITH SAME TYPE OF FUSE. Reference No Part Number Description M507 5120-0052-0 FUSE T1.6A 250V 5x20MM M507 5120-0050-0 FUSE T1.6A 250V 5x20MM M512, M513 5120-0020-0 FU T1A 250V UL/CSA 5x20MM M512, M513...

  • Page 4: Specifications

    SPECIFICATIONS Disc Capacity ........One Disc, 120 or 80 mm Decoding .

  • Page 5: Rear Panel / Front Panel

    REAR PANEL / FRONT PANEL REAR PANEL LINE OUT TRIGGER IN DIGITAL OPTICAL & COAXIAL OUTPUT TRIGGER SWITCH NAD LINK IN / OUT AC LINE CORD IR INPUT FRONT PANEL POWER ON / OFF STOP DISC DRAWER REPEAT DISPLAY RANDOM OPEN 10.

  • Page 6: Disassembly Instructions

    DISASSEMBLY INSTRUCTIONS 1. Remove machine screws M 4.0 x 6.0 ( 1 to 4 ) from the side panels. Remove tapping screw 3.0 x 8.5 ( 5 )from the back panel. Refer to Figure No.1. Figure No.1 2. Pull both sides of the TOP COVER slightly outwards 6 and tilt approx. 35˚ and then remove in the direction as indicated by the arrow 7 .

  • Page 7: Block Diagram

    BLOCK DIAGRAM...

  • Page 8: Wiring Diagram

    WIRING DIAGRAM...

  • Page 9: Rf Pattern Testing

    RF PATTERN TESTING Testing Point NAD - C 541i PCB TESTING POINTS DIAGRAM TESTING PROCEDURE (1) Load the test disc (Sony Test CD YEDS-7) and set the unit into PLAY mode. (2) Connect the scope to R227 (Pin 15 of U101) and DGND (J144).

  • Page 10: Important Notes

    IMPORTANT NOTES INSTRUCTION FOR HANDLING OPTICAL SYSTEM BLOCK PICK-UP Electrostatic breakdown of the laser diode in the optical system block may occur due to a potential difference caused by electrostatic charge accumulated on clothing, human body, etc. A ground must be provided as follows to prevent any electrostatic charge during unpacking or repair work.
  • Page 11 PRECAUTIONS WHEN CHANGING LASER PICK-UP When removing the pick-up assembly, short circuit the PCB tracks on the optical block as show in the drawing in order to protect the pick-up before removal. NOTE: Replacement pick-up assemblies are supplied with the PCB pattern already protected. DO NOT REMOVE THE SHORT CIRCUITS UNTIL YOU HAVE FINISHED FITTING THE PICK-UP.

  • Page 12: Pcb Layout

    PCB LAYOUT DISPLAY BOARD KEY BOARD LIVE BOARD LED BOARD...
  • Page 13 MAIN BOARD...

  • Page 14: Schematic Diagram

    SCHEMATIC DIAGRAM D409 Q402 R412 A+12V IN4148 2SD1012F R405 22K R406 R403 10K MUTE Q403 R308 R309 DATA D411 R310 R301 Q401 R302 R304 R306 DATA 2SA1015 R413 XLAT IN4148 XLAT 2SA1015 CLOK C403 U301-P50 CLOK R415 OPEN XRST D403 XRST M103 M101...
  • Page 15 DISPLAY /SQSO /SQCK /XRST /SYSM /DATA /XLAT /CLOK /SENS /SCLK /GFS /SCOR...
  • Page 16 RF AMP...
  • Page 18 POWER POWER_SW M802...
  • Page 19 REMOTE...

  • Page 20: Ic Block Diagram

    IC BLOCK DIAGRAM MAIN BOARD U101: CXA2581N AC_SUM EQ_IN MAIN BOARD U202: BA6392FP CH1OUTF 28 GND CH1OUTR 27 CH4OUTF LEVEL SHIFT RCIN1 26 CH4OUTR CH1RIN 25 VBIN INTER 190K FACE CH1FIN 24 VSIN 100K VREFIN 23 VBIN VREFOUT 22 VCC THERMAL SHUTDOWN CIRCUIT...
  • Page 21 MAIN BOARD U201: CXD3017Q DAC Block TES1 TEST Clock Error XRST Generator Corrector RMUT Serial-In RFAC demodurator Interface Interface LMUT ASYI Asymmtery ASYO XTAI Over sampling Timing Corrector Digital Filter Logic BIAS XTAO 3rd-Order XPCK Noise Shaper FILO Sub Code Digital Digital Processor...
  • Page 22 MAIN BOARD U301: M38B59EF /FLD RDY2 CLK22 /FLD CLK21 /FLD /FLD /FLD CLK12 /FLD CLK11 /FLD OUT1 /FLD /FLD /FLD /FLD STB1 /INT /FLD BUSY1 /FLD RDY1 /RTP /FLD /RTP /FLD I/O ports Port P0(8) Port P1(8) Port P2(8) Port P3(8) Port P4(8) Build-in peripheral functions A-D converter...
  • Page 23 MAIN BOARD U302: PCM1732 LRCIN 28 ML/I HDCD 27 MC/DEM BCKIN Serial Amplitude HDCD BCKIN 26 MD/F SS LRCIN Input Decoding Hidden CLKO 25 MUTE Code 24 MODE Recovery 23 CS/1WO DGND 22 RST PCM1732U Low-pass V OUT L Enhanced V DD ZERO EXTL...
  • Page 24 MAIN BOARD MAIN BOARD U305, U306: OPA2604 U403: TC74HC00AP AMPLIFIER 1 AMPLIFIER 2 OUTPUT INVERTING INPUT OUTPUT – + + – NON-INVERTING INVERTING INPUT INPUT NON-INVERTING V – INPUT MAIN BOARD MAIN BOARD U501, U506, U507: 78XX U601: LM393D OUTPUT A 8 V+ INVERTING OUTPUT B...

  • Page 25: Troubleshooting Guide

    TROUBLESHOOTING GUIDE SET POWER SWITCH TO ON. CHECK FUSES CHECK POWER SUPPLY POWER SUPPLY PATTERNS OPEN IS POWER TURNED ON ? M507, M512-M514 OPEN ? CIRCUIT NORMAL ? OR U501-U507 DEFECTIVE. IS OSCILLATOR CIRCUIT M507,M512-M514 DEFECTIVE CRYSTAL X301 DEFECTIVE. OSCILLATING ? IS THERE OPEN/ CLOSE KEY SIGNAL M101 SWITCH, DEFECTIVE CAN TRAY BE OPENED ?

  • Page 26: Electrical Parts List

    ELECTRICAL PARTS LIST Reference No. Part No. Description DISPLAY ASSEMBLY PCB BOARD 1000 * PCB-N0A20C-DISP DISPLAY ASSEMBLY M501 2460-1870-0 VFD 6-BT-271GK LED1 3700-2810-R LED RED 3MM SP L-93XHD IR SENSOR M113 4816-043T-3 IR SENSOR PIC-26043TM2 CONNECTOR WIRES M505A 7009-9620-0 CONN WIRE ASSY 12P 100MM M506A 7010-2224-0 CONN WIRE ASSY AWG28...
  • Page 27 Reference No. Part No. Description CAPACITOR C800 8910-0049-0 CAP400V 4700P DE7150F472MVA1KC POWER SWITCH M802 5200-3151-0-01 POWER SWITCH TRANSFORMER M810 1806-2170-0 EMI FILTER TLN12UA 150W3R0 TRANSFORMER ASSEMBLY TRANSFORMER M500 1806-2512-0 TRANSFORMER N0870C I/P 120/230V TOROIDAL FUSE ASSEMBLY FUSES M507 5120-0052-0 FUSE T1.6A 250V 5x20MM UL/CSA M507 5120-0050-0 FUSE T1.6A 250V 5x20MM SEMKO/VDE...
  • Page 28 Reference No. Part No. Description C308,C325,C334 157D-106M-5-GMK CE 16V 10µF 20% RL 4x7 C310 157B-107M-5-KMK CE 6.3V 100µF 20% RL 6x7 C320,C321,C323,C324,C332 157D-106M-5-IUF3 CE 16V 10µF 20% RL 5X11 ROA ELNA C322,C386 150F-104K-2-FC CC 50V 0.1µF 10% AT 3.5x2 C328,C329 15CH-200J-5-GG CTC 0/60 20pF 5% RL 4x4 C352,C353...
  • Page 29 Reference No. Part No. Description D305 4805-3930-2 DIODE 1N5393 200V 1.5A D403 4837-3V31-2 DZ 1/2W 3.1-3.5V ROHM AT 4837-3A31-2 DZ 1/2W 3.16~3.38V ROHM D404 4804-1480-2 DIODE 1N4148 AT D409,D411-D415,D426,D431 4804-1480-2 DIODE 1N4148 AT D501-D504,D506-D508 4804-0010-2 DIODE 1N4001 AT D505 4840-1140-0 ZD 1.3W 3.3V 5% AT D510 4837-22D1-2...
  • Page 30 Reference No. Part No. Description Q401,Q403 4860-0660-5 TR 2SA1015 (G.R.) RL Q402 4851-012F-5 TR 2SD1012F/G HFE 160-560 Q404 485A-114E-5 TR DTA114ESA ROHM Q405 485C-114E-5 TR DTC114ES ROHM Q502 485A-950Y-5 TR 2SA950-Y HFE 100-200 Q602,Q603 4851-9230-5 TR 2SC1923-0 HFE 70-140 RESISTORS R101 4701-100J-2 RCF 1/8W 10R 5% AT...
  • Page 31 Reference No. Part No. Description R375,R376,R379,R380,R384 4711-750A-C RMF 1/8W 75R 1% ATS R377,R378 4711-472A-2 RMF 1/8W 4.7K 1% AT R381,R382 4711-472A-2 RMF 1/8W 4.7K 1% AT R383 4711-151A-C RMF 1/8W 150R 1% ATS R390-R393 4717-221J-C RMF 1/2W 220R 5% ATS R394-R397 4711-472A-2 RMF 1/8W 4.7K 1% AT...

  • Page 32: Mechanism Exploded View

    MECHANISM EXPLODED VIEW WSL-2130CCM (x2) (x4) (x2) (x2) (x4) (x2) (x2) (x2)

  • Page 33: Mechanism Exploded View Parts List

    MECHANISM EXPLODED VIEW PARTS LIST Item Part No. Description 4102-9000-0 Outside Main Chassis 4102-9001-0 Tray 4102-9002-0 Subchassis 4102-9003-0 Chucking Plate 4102-9004-0 Drive Gear 4102-9005-0 Control Cam 4102-9006-0 Chucking Pulley 4102-9007-0 Gear Cover 4102-9008-0 Tray Gear 4102-9009-0 Intermediate Gear 4102-9010-0 Loading Pulley 4102-9011-0 Motor Pulley 4102-9012-0...

  • Page 34: Exploded View

    EXPLODED VIEW...

  • Page 35: Exploded View Parts List

    EXPLODED VIEW PARTS LIST Item Part No. Description 0001 1465-5706-3 FASSCIA W/SS PAINT 0002 1402-3781-2 STARP 0003*AH 1402-3522-0 CHASSIS W/SS PAINT 0003*C 1402-3523-0 CHASSIS W/SS PAINT 0005 1402-3530-0 COVER 0006 2442-1000-0 POWER BUTTON 0007 4154-4191-0 CD DOOR W/SS PAINT 0008 3716-4316-0 WINDOW LENS W/SS 0010...

  • Page 36: Packing Diagram

    REMOTE CONTROL HANDDSET 1497-1302-0 REMOTE CONTROL POLYBAG 4301-4105-0 INSTRUCTION MANUAL 1497-1062-0 MANUAL POLYBAG 1435-8400-0-2 CARTON BOX Proprietary information for servicing purposes only. The information herein may not be used com- mercially without the prior written agreement of NAD Electronics International, Toronto, Canada.
  • Page 37 © NAD 2002 NAD ELECTRONICS INTERNATIONAL TORONTO...

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