NAD C 525BEE Service Manual
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NAD C 525BEE Service Manual

Compact disc player
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NAD
C 525BEE
COMPACT
DISC PLAYER

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Summary of Contents for NAD C 525BEE

  • Page 1 C 525BEE COMPACT DISC PLAYER...

  • Page 2: Safety Information

    SAFETY INFORMATION CAUTION CAUTION VARING - INVISIBLE LASER RADIATION WHEN OPEN AND - OSYNLING LASERSTRÅLNING NÄR DENNA DEL ÄR ÖPPNAD OCH SPÄRRAR ÄR URKOPPLADE. STRÅLEN ÄR FARLIG. INTERLOCKS DEFEATED. AVOID EXPOSURE TO BEAM. CLASS 1 VARO! - AVATTAESSA JA SUOJALUKITUS OHITETTAESSA OLET ADVARSEL - USYNLIG LASERSTRÅLING NÅR DEKSEL ÅPNES OG LASER PRODUCT...

  • 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 525BEE 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 R206 /XRST V3V6 XLAT XLAT R205 /SYSM 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 D+5V 1/2X R308 SQCK SCLK R301 1K R302 6K2 R304 2K R306 1K R309 UNLD UNLD LOAD M113 LOAD KEY309 R310 KEY310 KEY308 KEY306 KEY304 XRST XRST F.SCAN B.SCAN KEY302 REPEAT TIME RANDOM OPEN/CLOSE XLAT CLOK CLOK XLAT KEY307...
  • Page 16 RF AMP - 16 -...
  • Page 17 - 17 -...
  • Page 18 POWER 4700p C800 POWER_SW M802 - 18 -...

  • Page 19: 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 20: Main Board

    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 21 MAIN BOARD U302: PCM1710U LRCIN ML/DSD Input Interface MC/DM2 Digital Mode BCKIN MC/DM1 Filter Control 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 22 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 - 22 -...

  • Page 23: 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 24: Electrical Parts List

    ELECTRICAL PARTS LIST Location Part Number Description LIVE ASSY PC BOARD *EU TITANIUM/GREY PCB-C521B27+LIVE PCB ASSY LIVE C521BEEC *CA TITANIUM/GREY PCB-C521BD7+LIVE PCB ASSY LIVE C521BEE CAPACITORS 8910-0049+0 CAP400V 4700P C800 SWITCH M802 5200-3151+0-01 POWER SWITCH PC BOARD 1725-221B+0100 PCB MAIN N0A60C C521 BEE MISCELLANEOUS M801, M803 4132-1071+0...
  • Page 25 Location Part Number Description MISCELLANEOUS J406, J407 4132-1071+0 TERMINAL PIN DISPLAY ASSY PC BOARD PCB-C521BD7+DISP PCB ASSY DISPLAY C521BEE WIRE M509A 7010-1300+1 CN ASSY SHIELD 2P P2.5 PC BOARD 1725-221B+0100 PCB MAIN N0A60C C521 BEE WIRE M505A, M505B 7009-9630+1 CONN WIRE ASSY 14P 100MM MISCELLANEOUS 0011 4134-3011+0...
  • Page 26 Location Part Number Description WIRE M120C 7012-6347+0 CONNECTOR WIRE ASSY PC BOARD 1725-211B+0000 PCB KEY N0A60C LED ASSY PC BOARD PCB-C521BD7+LED PCB ASSY LED C521BEE D304 3700-3517+RG LED RED/GREEN (L-469HGW) PC BOARD 1725-221B+0100 PCB MAIN N0A60C C521 BEE WIRE M301B 7012-7300+0 WIRE-CONN 3P P2.5 #26 MAIN ASSY...
  • Page 27 Location Part Number Description C216 150F-103K+2-FC CC 50V 0.01uF 10% AT 3.5 C217 150F-104K+2-FC CC 50V 0.1UF 10% AT C218 150F-101K+2-FC CC 50V 100pF 10% AT 3.5x C219, C220 150F-474M+5-II CC 50V 0.47UF 20% RL 5X5 C221 150F-392K+2-GD CC 50V 0.0039UF 10% AT C222 150F-104K+2-FC CC 50V 0.1UF 10% AT...
  • Page 28 Location Part Number Description C386 150F-104K+2-FC CC 50V 0.1UF 10% AT C387 150F-103K+2-FC CC 50V 0.01uF 10% AT 3.5 C390, C391 157D-477M+K-OVI CE 16V 470UF 20% RLT C407 157D-228M+5-X=I CE 16V 2200UF 20% RL C417 150F-104K+5-II CC 50V 0.1uF 10% RL 5x5 C418 157E-106M+5-IU CE 25V 10uF 20% RL 5x11...
  • Page 29 Location Part Number Description M500A 2102-071S+004 WF T8 DE 7PIN COULOMB M505A, M505B 2102-141S+004 14P ST. WAFER P=2.5 M509 2102-021S+004 2P ST.WAFER M509A 2102-022S+008 WAFER 2PIN PITCH=2.54MM JACKS/SOCKETS M317 2113-1300+0 2P RCA JACK W/R AU M318 2113-1170+0 1P RCA JACK YL AU COILS L201 1801-270K+M...
  • Page 30 Location Part Number Description R107 4701-104J+2 RCF 1/8W 100K 5% AT R108 4701-683J+2 RCF 1/8W 68K 5% AT R109 4711-153A+2 RMF 1/8W 15K 1% AT R110 4701-302J+2 RCF 1/8W 3K 5% AT R111 4701-472J+2 RCF 1/8W 4.7K 5% AT R112, R113, R114 4701-512J+2 RCF 1/8W 5.1K 5% AT R115...
  • Page 31 Location Part Number Description R340 4701-100J+2 RCF 1/8W 10R 5% AT R341 4701-561J+2 RCF 1/8W 560R 5% AT R346 4701-103J+2 RCF 1/8W 10K 5% AT R347 4701-102J+2 RCF 1/8W 1K 5% AT R353 4711-122A+2 RMF 1/8W 1.2K 1% AT R354 4701-271J+2 RCF 1/8W 270R 5% AT R355, R356...
  • Page 32 Location Part Number Description U305, U306 3130-9340+0 IC OPA2604 OPAMP DIP8 U403 3130-4160+0 IC TC74HC00AP(F/M) U501 3130-2020+3 IC MC7805CTG REG 5V 1.5A U502 3130-2520+2 IC NJM7812FA-#ZZZB U503 3130-3800+0 IC NJM7912FA-#ZZZB U504 3130-9030+0 IC REGULATOR NJM78L09L2A U506 3130-2020+3 IC MC7805CTG REG 5V 1.5A U507 3130-2790+1 IC NJM7808FA-#ZZZB...
  • Page 33 Location Part Number Description D505 4840-1140+0 DZ 1.3W 3.3V 5% AT L101, L102, L302 1801-100K+M-2 COIL 10UH 10% BL7.0 AT M303 2704-0060+0 EMC FILTER M320 4132-1061+0 SOLDER TAG M502, M503, M504, M505 4131-9131+0 FUSE HOLDER 6.5MM PITCH X301 2703-0280+0 CR 8MHZ CSTLA8M00T55-B0 NOTE: The components identified by mark are critical for risk of fire and electrical shock.

  • Page 34: Mechanism Exploded View

    MECHANISM EXPLODED VIEW WSL-2130CCM (x2) (x4) (x2) (x2) (x4) (x2) (x2) (x2) - 34 -...

  • Page 35: 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 36: Exploded View

    EXPLODED VIEW - 36 -...

  • Page 37: Exploded View Parts List

    EXPLODED VIEW PARTS LIST Item Part No. Description 0001 *EU GREY / *CA GREY 1466-510A+2 FASCIA BLACK NACDC525B 0001 *EU TITANIUM / *CA TITANIUM 1466-510B+2 FASCIA SILVER NACDC525B 0002 1402-3783+2 STRAP (C542) 0003 *EU TITANIUM/GREY 1402-352I+1 CHASSIS-REAR C NACDC525B 0003 *CA TITANIUM/GREY 1402-352J+1 CHASSIS-REAR AH...
  • Page 38 Item Part No. Description 0217 2842-3367+0 METAL WASHER 0218 2954-3006+0000 3X6MM B-TITE (YEL.ZN) 0219 2904-3006+3000 SCREW M3X6 BINDING (BLK) 0223 2600-4008+0973 FLAT WASHER 4*9.7*0.8 0224 2640-4030+0703 M4 NUT (BLK) 0225 2954-3008+0000 SCREW B-TITE BIND M3X8 0226 2954-2006+0000 TAPPING SCREW 2X6 0227 2954-2608+0000 SCREW B-TITE BIND M2.6X8...

  • Page 39: Packing Diagram

    GREENCELL 3A SIZE GP24G2 8912-0038+0 REMOTE CONTROL C521BEE 1450-2520+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. - 39 -...
  • Page 40 © NAD 2006 NAD ELECTRONICS INTERNATIONAL TORONTO...

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