NAD C 541 Service Manual
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NAD C 541 Service Manual

Nad c 541 compact disc player service manual
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NAD
C 541
COMPACT
DISC PLAYER

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Summary of Contents for NAD C 541

  • Page 1 C 541 COMPACT 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 *AH 5120-0052-0 FUSE T1.6A 250V 5X20MM M512, M513 *AH 5120-0020-0 FU T1A 250V UL/CSA 5X20 M514 5120-0026-0 FU T315MA L 250V UL/CSA...

  • Page 4: Specifications

    SPECIFICATIONS Disc Capacity ......One Disc, 120 or 80 mm Decoding ....... BURR-BROWN Delta Sigma 24bit Digital Filter .

  • Page 5: Rear Panel / Front Panel

    REAR PANEL / FRONT PANEL REAR PANEL 1. LINE OUT 3. NAD LINK 2. DIGITAL OUT 4. AC LINE CORD FRONT PANEL 1. POWER ON / OFF 7. STOP 2. DISC DRAWER 8. REPEAT 3. DISPLAY 9. RANDOM 4. 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 DISC...

  • Page 8: Wiring Diagram

    WIRING DIAGRAM...

  • Page 9: Rf Pattern Testing

    J334 Testing Point R132 NAD - C 541 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 R132 (Pin 41 of U101) and DGND (J334).

  • 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 poten- tial 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- Protective soldering place for laser diode...

  • Page 12: Pcb Layout

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

  • Page 14: Schematic Diagram

    SCHEMATIC DIAGRAM 0V *1.8V *1.4V 4.6V 1.7V 1.5V *0.3V 0V 2.3V 2.5V 2.4V 2.5V 1.6V HDCD *0.4V 0V 4.8V *0V 4.9V 4.8V *1.2V 0.2V 2.4V 4.9V *1.2V 3V 2.4V 4.9V 2.1V 4.9V 2.3V 2.3V 2.3V 2.3V 3V *1.6V 2.4V 2.4V 2.4V 4.9V 2.4V...

  • Page 15: Ic Block Diagram

    IC BLOCK DIAGRAM U101: LA9240 57 56 55 54 53 52 51 50 48 NC RF DET FIN2 47 TBC FIN1 46 FSC µ - com 45 DGND INTER FACE 44 SLI 43 SLC 42 RFS– TE– 41 RFSM RF Amp TESI T.SERVO &...
  • Page 16 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 HDCD EXTL...
  • Page 17 U403: 74HC00 U701: LB1641 OUT1 VCC2 OUT2 VCC1 Input logic circuit U401: LC866008C IC401: System Block Diagram LC8660/08C Interrupt Control Stand-by Control 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 Clock TEST 1 Generator X'tal B Reg...

  • Page 18: 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 M401 DEFECTIVE. OSCILLATING ? IS THERE OPEN/ CLOSE KEY SIGNAL M101 SWITCH, DEFECTIVE CAN TRAY BE OPENED ?

  • Page 19: Electrical Parts List

    ELECTRICAL PARTS LIST Reference No. Part No. Description DISPLAY ASSEMBLY PCB BOARD 1000 PCB-N0960C-DISP DISPLAY ASSEMBLY LED1 3700-2810-R LED RED 3MM SP L-93XHD IR SENSOR M113 4816-043T-3 IR SENSOR PIC-26043TM2 KODENSHI M501 2460-1870-0 VFD 6-BF-271GK KEYBOARD ASSEMBLY PC BOARD 2000 PCB-N0960C-KEY KEYBOARD ASSEMBLY RESISTORS...
  • Page 20 Reference No. Part No. Description FUSES M507 5120-0052-0 FUSE T1.6A 250V 5 x 20MM M507 5120-0050-0 FUSE T1.6A 250V 5 x 20MM M512, M513 5120-0020-0 FU T1A 250V UL/CSA 5 x 20 M512, M513 5120-0018-0 FU T1A 250V SEMKO/VDE M514 5120-0026-0 FU T315MA L 250V UL/CSA M514...
  • Page 21 Reference No. Part No. Description C313 153F-102J-5-IM CM 50V 1000pF 5% RL 5x7 C320,C321 157D-106M-5-Iuf3 CE 16V 10µF 20% RL 5X11 C322 150F-104K-5-II CC 50V 0.1µF 10% RL 5x5 C323,C324 157D-106M-5-Iuf3 CE 16V 10µF 20% RL 5X11 C325 157Q-106M-5-IUK CE 35V 10µF 20% RL 5X11 C326,C327 150F-104K-5-II CC 50V 0.1µF 10% RL 5x5...
  • Page 22 Reference No. Part No. Description C537,C538 157E-106M-5-Iuf3 CE 25V 10µF 20% RL 5X11 C539 153F-103K-5-IM CM 50V 0.01µF 10% RL 5x7 C540-C543 150F-104K-5-II CC 50V 0.1µF 10% RL 5x5 C544 153F-103K-5-IM CM 50V 0.01µF 10% RL 5x7 C545,C546 150F-104K-5-II CC 50V 0.1µF 10% RL 5x5 C560,C561 157E-107M-5-KUK CE 25V 100µF 20% RL...
  • Page 23 Reference No. Part No. Description R111 4701-203J-C RCF 1/8W 20K 5% ATS R112 4701-223J-C RCF 1/8W 22K 5% ATS R113 4701-153J-C RCF 1/8W 15K 5% ATS R116 4701-393J-C RCF 1/8W 39K 5% ATS R117 4701-152J-C RCF 1/8W 1.5K 5% ATS R118 4701-103J-C RCF 1/8W 10K 5% ATS...
  • Page 24 Reference No. Part No. Description R418,R419 4701-272J-C RCF 1/8W 2.7K 5% ATS R420-R427 4701-472J-C RCF 1/8W 4.7K 5% ATS R428 4701-561J-C RCF 1/8W 560R 5% ATS R501,R502 4701-241J-C RCF 1/8W 240R 5% ATS R503,R504 4701-222J-C RCF 1/8W 2.2K 5% ATS R517,R518,R520 4701-471J-C RCF 1/8W 470R 5% ATS...

  • Page 25: Mechanism Exploded View

    MECHANISM EXPLODED VIEW CD11CA...

  • Page 26: Mechanism Exploded View Parts List

    MECHANISM EXPLODED VIEW PARTS LIST ITEM Part No. Description 4102-6101-0 RUBBER CUSHION (HARD) 4102-6102-0 RUBBER CUSHION (SOFT) 4102-6103-0 BASE 4102-6104-0 TRAY 4102-6105-0 CDM MOUNTING BASE 4102-6106-0 MAGNET HOLDER 4102-6107-0 SLIDE GEAR 4102-6108-0 PULLEY GEAR 4102-6109-0 DRIVE GEAR 4102-6110-0 PULLEY MOTOR 4102-6111-0 SQUARE BELT 4102-6112-0...

  • Page 27: Exploded View Of Laser Cd11Ca-G

    EXPLODED VIEW OF LASER CD11CA-G...

  • Page 28: Exploded View Parts List Of Laser Cd11Ca-G

    EXPLODED VIEW PARTS LIST OF LASER CD11CA-G ITEM Part No. Description 4102-6214-0 ASSY PICKUP LASER P101N 4102-6215-0 ASSY MOTOR 6.0V SPINDLE 4102-6216-0 ASSY MOTOR SLED 6.0V 4102-6217-0 CHASSIS 4102-6218-0 COVER GEAR 4102-6219-0 SHAFT SLIDE 4102-6220-0 GEAR MIDDLE 4102-6221-0 GEAR DRIVE 4102-6222-0 SWITCH LEAF(PWB MOTOR) 4102-6223-0...

  • Page 29: Exploded View

    EXPLODED VIEW...

  • Page 30: Exploded View Parts List

    EXPLODED VIEW PARTS LIST ITEM Part No. Description 0001 1465-5704-2 FASCIA W/SS PAINT 0002 1402-3781-2 STRAP 0003*AH 1402-3518-0 CHASSIS W/SS PAINT 0003*C 1402-3519-0 CHASSIS W/SS PAINT 0005 1402-3530-0 COVER 0006 2442-1000-0 POWER BUTTON 0007 1464-6011-3 CD DOOR W/SS PAINT 0008 3716-4316-0 WINDOW LENS W/SS 0010...

  • Page 31: Packing Diagram

    REMOTE CONTROL HANDSET 1497-1302-1 REMOTE CONTROL POLYBAG 4301-4105-0 INSTRUCTION MANUAL 1497-1062-0 MANUAL POLYBAG 1435-4200-1-2 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 32 © NAD 2001 NAD ELECTRONICS INTERNATIONAL TORONTO...

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