NAD C 521BEE Service Manual
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NAD C 521BEE Service Manual

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NAD
C 521BEE
C O M PA C T
DISC PLAYER

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Summary of Contents for NAD C 521BEE

  • Page 1 C 521BEE 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 M502-M504 5120-0020-0 FU T1A 250V UL/CSA 5x20MM M502-M504 5120-0018-0 FU T1A 250V SEMKO/UDE 5x20MM M505 5120-0052-0 FUSE T1.6A 250V 5x20MM UL/CSA...

  • 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 AC LINE CORD DIGITAL OUT FRONT PANEL POWER ON / OFF STOP DISC DRAWER REPEAT DISPLAY RANDOM OPEN 10. SCAN Back ( ) / Forward ( PLAY / PAUSE 11. SKIP Back ( ) / Forward ( TIME 12.

  • 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 - 7 -...

  • Page 8: Wiring Diagram

    WIRING DIAGRAM - 8 -...

  • Page 9: Rf Pattern Testing

    RF PATTERN TESTING NAD - C 521BEE 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 - 12 -...
  • Page 13 MAIN BOARD - 13 -...

  • Page 14: Schematic Diagram

    SCHEMATIC DIAGRAM DISPLAY CN202 DEBUG /SQSO /SQCK /XRST V3V6 R206 XLAT XLAT /SYSM R205 DATA DATA /DATA R204 SYSM SYSM /XLAT R201 XRST XRST /CLOK R211 CLOK R202 SQCK CLOK SQCK /SENS R210 SENS R203 SQSO SENS SQSO /SCLK R209 SCLK SCLK /GFS...
  • Page 15 R340 C309 CD/CDR 47uF/10V 1/2X D+5V R308 SQCK R301 1K R302 6K2 R304 2K R306 1K SCLK R309 UNLD UNLD LOAD M113 LOAD KEY309 R310 KEY310 KEY308 KEY306 XRST KEY304 XRST F.SCAN KEY302 B.SCAN REPEAT TIME RANDOM OPEN/CLOSE XLAT CLOK CLOK XLAT KEY307...
  • Page 16 RF AMP - 16 -...
  • Page 17 POWER 4700p C800 POWER_SW M802 - 17 -...

  • Page 18: Ic Block Diagram

    IC BLOCK DIAGRAM MAIN BOARD U101: CXA2581N AC_SUM EQ_IN MAIN BOARD U201: 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 19 MAIN BOARD U301: 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 20 MAIN BOARD U302: PCM1710U LRCIN ML/DSD Input Interface MC/DM2 Digital Mode Filter Control BCKIN MC/DM1 CLKO MUTE Timing Control MODE CKSL Noise Shaper DGND DGND 5-Level DAC 5-Level DAC Right Left VCC2R VCC2L AGND2R AGND2L Low Pass Filter Low Pass Filter Right Left EXT1R...
  • Page 21 MAIN BOARD MAIN BOARD U305, U306: NE5532 U403: TC74HC00AP AMPLIFIER 1 AMPLIFIER 2 OUTPUT INVERTING INPUT OUTPUT – + + – NON-INVERTING INVERTING INPUT INPUT NON-INVERTING V – INPUT MAIN BOARD MAIN BOARD U501, U502, U504, U503: UPC79M12HF U506, U507: 78XX - 21 -...

  • Page 22: 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 23: Electrical Parts List

    ELECTRICAL PARTS LIST Reference No. Part No. Description DISP ASSY PC BOARD PCB-N0A60C-DISP PCB ASSY DISP N0A60C WIRE M505A,M505B 7009-9630-0 CONN WIRE ASSY 14P 100MM M509A 7010-1300-1 CN ASSY SHIELD 2P P2.5 PC BOARD 1725-221A-0102 PCB MAIN N0A10C C521I MISCELLANEOUS 0011 4134-3011-0 LCD/EL HOLDER...
  • Page 24 Reference No. Part No. Description LIVE ASSY PC BOARD PCB-N0A60C-LIVE PCB ASSY LIVE N0A60C PCB-N0A61C-LIVE PCB ASSY LIVE N0A61C SWITCH M802 5200-3151-0-01 POWER SWITCH PC BOARD 1725-221A-0102 PCB MAIN N0A10C C521I MISCELLANEOUS C800 8910-0049-0 CAP400V 4700P M801,M803,M806 4132-1071-0 TERMINAL PIN M804 *CE 4132-1071-0 TERMINAL PIN...
  • Page 25 Reference No. Part No. Description C385 150F-222K-2-GD CC 50V 0.0022µF 10% AT C407 157D-228M-5-X9E CE 16V 2200µF 20% RL 12.5x20 C418,C530 157E-106M-5-IU CE 25V 10µF 20% RL 5x11 C506,C507 157E-228M-5-X9 CE 25V 2200µF 20% RL 12.5x20 C511 157C-227M-5-KW CE 10V 220µF 20% RL 6x12 C512,C513 157D-108M-5-S9 CE 16V 1000µF 20% RL 10x20...
  • Page 26 Reference No. Part No. Description U507 3130-2790-1 IC NJM7808FA +8V REG RELAY RL101 4500-0200-1 RELAY 2P2T BT-12S 12VDC RESISTOR R101,R340 4701-100J-2 RCF 1/8W 10R 5% AT R103,R104 4701-203J-2 RCF 1/8W 20K 5% AT R105,R110,R308-R310 4701-302J-2 RCF 1/8W 3K 5% AT R106 4701-154J-2 RCF 1/8W 150K 5% AT...
  • Page 27 Reference No. Part No. Description D301,D303,D306,D409,D411 4804-1480-2 DIODE 1N4148 AT D302,D513 4805-3930-2 DIODE 1N5393 200V 1.5A D403 4837-3V36-2 DZ 1/2W +-5% 3.3V TEMIC D505 4840-1140-0 ZD 1.3W 3.3V 5% AT TRANSISTOR Q101,Q104,Q105,Q312,Q313 4860-0060-5 TR SS8550 C/D SAMSUNG RL Q103,Q106,Q107,Q307-Q309,Q520 4860-0050-5 TR SS8050 C/D SAMSUNG RL Q301-Q304 4860-1780-5...

  • Page 28: Mechanism Exploded View

    MECHANISM EXPLODED VIEW WSL-2130CCM (x2) (x4) (x2) (x2) (x4) (x2) (x2) (x2) - 28 -...

  • Page 29: 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 30: Exploded View

    EXPLODED VIEW - 30 -...

  • Page 31: Exploded View Parts List

    EXPLODED VIEW PARTS LIST Item Part No. Description 0001 *AH TIT/*CE TIT 1466-5102-0 FASCIA SILVER (C521BEE) 0001 *AH GREY/*CE GREY 1466-5101-0 FASCIA BLACK (C521BEE) 0002 1402-3783-2 STRAP (C542) 0003 *CE GREY 1402-3525-1 CHASSIS C521BEE(C) 0003 *AH GREY/*AH TIT 1402-3524-1 CHASSIS C521BEE(AH) 0005 *AH GREY/*CE GREY 1402-3531-0...
  • Page 32 Item Part No. Description 0209 2900-4010-3030 PH W/WASHER M4X10 BL ZN 0210 2954-3008-0000 TAPPING 3X8MM B-TITE 0211 2904-3006-0000 SCREW M3X6 0213 2954-3008-3000 T3X8MM SELF TAPPING 0216 2954-3008-0000 TAPPING 3X8MM B-TITE 0218 2954-3006-0000 3X6MM B-TITE (YEL.ZN) 0219 2904-3006-3000 SCREW M3X6 BINDING (BLK) 0223,0228 2600-4008-0973 FLAT WASHER M4X0.8X9.7...

  • Page 33: Packing Diagram

    GREENCELL 3A SIZE GP24G2 8912-0038-0 REMOTE CONTROL C521BEE 1405-2520-0 WHITE PAPER 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. - 33 -...
  • Page 34 © NAD 2003 NAD ELECTRONICS INTERNATIONAL TORONTO...

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