NAD-C542-cd-sm维修电路原理图.pdf

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1、NAD C 542 COMPACT DISC PLAYER C 542 COMPACT DISC PLAYER SERVICE MANUAL RadioFans.CN 收音机爱 好者资料库 - 2 - CATUION HGKJDHSGKJHGSJK ADVARSEL HGKJDHSGKJHGS KBVNCLKNBCVLKNLKNVLKNCVNCLVK JK ADVARSEL HGKLFH;L;HJMNMD HFKLJHJLDKLJLKDJLKFHJHSGMMKJHGSJK VARING HGKJDHSGKJHGKLGDJH KLHKFG;LKNG;LKJGF;LKJGF;LKJFL;SJK V

2、ARO! HGKJDHSGKJHJBJKBKJBJKGS KBVNCLKNBCVLKNLKNVLKNCVNCLVK JK VORSICT! HGKLFH;L;HHBHHJD JHFKLJHJLDKLJLKDJLKFHJHSGKJHGSJK SAFETY INFORMATION CAUTION CAUTION- INVISIBLE LASER RADIATION WHEN OPEN AND INTERLOCKS DEFEATED. AVOID EXPOSURE TO BEAM. ADVARSEL- USYNLIG LASERSTRLING NR DEKSELPNES OG SIKKERHEDSL

3、S BRYTES. UNNG EKSPONERING FOR STRLEN. ADVARSEL- USYNLIG LASERSTRLING VED BNING, NR SIKKERHEDSAFBRYDERE ER UDE AF FUNKTION. UNDG UDSTTELSE FOR STRLING. VARING- OSYNLING LASERSTRLNING NR DENNADELR PPNAD OCH SPRRAR R URKOPPLADE. STRLEN R FARLIG. VARO!- AVATTAESSAJASUOJALUKITUS OHITETTAESSAOLET ALTTIIN

4、ANKTMTNT LASERSTEILYLLE. L KAISO STEESEEN. VORSICT!- UNSICHTBARE LASERSTRAHLUNG TRITTAUS, WENN DECKELGEFFNETUND WENN SICHERHEITSVERRIEGELUNG BERBRCKTIST. NICHTDEM STRAHLAUSSETZEN. THIS DEVICE COMPLIES WITH PART 15 OF THE FCC RULES. OPERATION IS SUBJECT TO THE FOLLOWING TWO CONDITIONS:- (1) THIS DEVI

5、CE MAY NOT CAUSE HARMFUL INTERFERENCE, AND (2) THIS DEVICE MUST ACCEPT ANY INTERFERENCE RECEIVED, INCLUDING INTERFERENCE THAT MAY CAUSE UNDESIRED OPERATION. The lightning flash with arrowhead, within an equilateral tri- angle is intended to alert the user of the presence of uninsulated dangerous vol

6、tage within the products enclosure; that may be of sufficient magnitude to consti- tute a risk of electric shock to persons. The exclamation point within an equilateral triangle is intend- ed to alert the user of the presence of important operating and maintenance (servicing) instructions in the lit

7、erature accompanying the appliance. CLASS 1 LASER PRODUCT RadioFans.CN 收音机爱 好者资料库 - 3 - SERVICE SAFETY PRECAUTIONS 1.Replacing the fuses CAUTION: FOR CONTINUED PROTECTION AGAINST THE RISK OF FIRE REPLACE ONLY WITH SAME TYPE OF FUSE. Reference NoPart NumberDescription M507 *AH 5120-0052-0FUSE T1.6A 2

8、50V 5x20MM M507 *C 5120-0050-0FUSE T1.6A 250V 5x20MM M512, M513 *AH 5120-0020-0FU T1A 250V UL/CSA 5x20MM M512, M513 *C 5120-0018-0FU T1A 250V SEMKO/VDE M514 *AH 5120-0026-0FU T315MA L 250V UL/CSA M514 *C 5120-0027-0FU T315MA L 250V NOTE: : USA, CANADIAN MODEL ONLY. : EUROPEAN MODEL ONLY. 2.Safety ch

9、eck 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 the supply circuit. Parts marked with the symbol are critical with regard to the risk of fire and electric shock. Re

10、place only with parts recommended by the manufacturer. CONTENTS DESCRIPTIONPAGE SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 REAR PANEL / FRONT PANEL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

11、 . . . . . . . . . . . . . . . . .5 DISASSEMBLY INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 WIRING DIAGRA

12、M . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8 RF PATTERN TESTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9 IMPORTANT NOTES . . . . . . . . . . . . . . . . . . .

13、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-11 PCB LAYOUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-13 SCHEMATIC DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

14、. . . . . . . . . . . . .14-18 IC BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19-22 TROUBLESHOOTING GUIDE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23 ELECTRICAL PARTS LIST

15、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24-29 MECHANISM EXPLODED VIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30 MECHANISM EXPLODED VIEW PARTS LIST . . . . . . . . . . . . . . . . . . . . . . .

16、 . . . . . . . . . . . . .31 EXPLODED VIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32 EXPLODED VIEW PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33-34 PACKING DIAGRAM . . .

17、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35 RadioFans.CN 收音机爱 好者资料库 - 4 - SPECIFICATIONS Disc Capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .One Disc, 120 or 80 mm Decoding . . . . . . . . . . . . . . .

18、 . . . . . . . . . . . . . . . . . . . . . . . .BURR-BROWN Delta Sigma 24bit Digital Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8 Times oversample Analog Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 pole active Frequency Res

19、ponse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .+/- 0.5 dB, 5Hz - 20kHz De-Emphasis Error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .+/- 0.3 dB THD (at 0 dB, 1kHz) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0.002% Intermodulation Distortion . .

20、. . . . . . . . . . . . . . . . . . . . . . . . .90 dB 10 kHz . . . . . . . . . . . . . . . . . . . . . . . .80 dB Wow and Flutter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Unmeasurable (Quartz Crystal Accuracy) Output Impedance . . . . . . . . . . . . . . . . . . . . . . .

21、. . . . . . . . .200 Output Level at 0 dB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2.2 V rms Digital Error Correction . . . . . . . . . . . . . . . . . . . . . . . . . . . . .IRC with double error correction in C1 and C2 Digital Code Output . . . . . . . . . . . . . . . . . . . .

22、 . . . . . . . . . . . .Sony / Philips Serial data format Power Consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12W CONTROLS Play / Pause, Stop, Random, Skip (), Scan (), Open, Time, Repeat. PHYSICAL SPECIFICATIONS Dimensions435 x 80 x 285 mm (Width x Height x Depth) Net wei

23、ght4 kg (8.8 lbs) Shipping weight5.1 kg (11.22 lbs) RadioFans.CN 收音机爱 好者资料库 - 5 - DIGITAL OPTICAL OUT DIGITAL OPTICAL OUT DIGITAL OUT DIGITAL OUT TRIGGER SWITCHTRIGGER SWITCH IR INIR INININOFFOFFAUTOAUTO NAD LINK OUT IN NAD LINK OUT IN 2003 NAD C 542 456 7 1.LINE OUT 2.DIGITAL OPTICAL & COAXIAL OUTP

24、UT 3NAD LINK IN / OUT 4.IR INPUT 5.TRIGGER IN 6.TRIGGER SWITCH 7.AC LINE CORD 1. POWER ON / OFF 2. DISC DRAWER 3. DISPLAY 4. OPEN 5. PLAY / PAUSE 6. TIME 7. STOP 8. REPEAT 9. RANDOM 10. SCAN Back () / Forward () 11. SKIP Back () / Forward () 12. STANDBY LED 2003 NAD C 542 NADC 542Compact Disc Player

25、 SEC6 7 8 910 MIN 468 1151279 10123 OPEN PLAY PAUSESTOP TIME RANDOM SCAN SKIP REPEAT REAR PANEL / FRONT PANEL REAR PANEL FRONT PANEL RadioFans.CN 收音机爱 好者资料库 - 6 - 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 t

26、he 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 . Refer to Figure No.2. Figure No.2. 5 4 3 1 2 7 6 6 RadioFans.CN 收音机爱 好者资料库 - 7 - BLOCK DIAGRAM U301 M38B59EF SYS

27、TEM CONTROL CPU & VFL DISPLAY DRIVER Q401- Q403 MUTE CIRCUIT Q301-Q304 MUTE M313 RCA JACK Q307 M313 IR_IN M318 RCA JACK DIGITAL OUTPUT U402 NAD LINK MICRO- CONTROLLER U403 74HC00 NAND GATE NAD LINK IN M501 VFL DISPLAY M314 TRIGGER SWITCH M315 TRIGGER IN NAD LINK OUT M319 RCA JACK 18 67 19 69 59 70 6

28、0 80 6222 32 687225 1123 159 1312 109 8 11 20 1 79 80244156 3540 27 13 16 13 4 64 6361 66 51 59 40 41 43 65 665867 63 64 1 9 24 36 60 L R L R CD AUDIO O/P 251215 16 18 28 U201 LXD3017Q DSP 1 27 6 2 11 U101 CX2581 RF AMP RFAC FE SETE RFDC SRDR SFDR FRDR FFDR TRDR TFDR SPDR LOADING MOTOR DISCO DISW LO

29、ADING MOTOR LIMIT SWITCH SPINDLE MOTOR SLED MOTOR PU-IN LIMIT SWITCH PICK UP DISC M113 REMOTE SENSOR CD MECHANISM UNIT POWER TRANSFORMER AC POWER I / P Q101 U302 PCM1732 DAC U306U305 U501,U507 DIGITAL POWER U502-3,U506 ANALOGUE POWER +8V+5V+12V5V -12V D514-D517 RECTIFIER DIODES D501-D504 RECTIFIER D

30、IODES D510-D511 ZENER DIODES -22V F1F2 D506-D508 RECTIFIER DIODES U403 74HC00 NAND GATE M303 EMC FILTER L301 DIGITAL COIL M316 OPT JACK DIGITAL OUTPUT M500 Q310 K501 RELAY K502 RELAY Q312 8 Q103 426 27 12 12 13 16 17 5 9 10 20 19 24 15 29 28 33 32 31 30 26 27 U202 BA6392 KEYBOARD M110M109 REPEAT M10

31、5M108M107 RANDOM M102M106M104M103 TIME M101 RadioFans.CN 收音机爱 好者资料库 - 8 - WIRING DIAGRAM M102 (16PIN) M301A M505A M506A M120A M105A (6PIN) CD MECHANISM LIVE BOARD DISPLAY BOARD KEY BOARD MAIN BOARD LED BOARD M101 (5PIN) BROWN BLACK NEUTRAL LIVE RED M502 TRANSFORMER RadioFans.CN 收音机爱 好者资料库 - 9 - RF P

32、ATTERN TESTING NAD - C 542 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). Scope setting:Coupling: AC. Vertical sensitivity: 0.2 V/ div. Horizontal time base: 0.

33、5 S/div. (3) Observe the waveform is 2.0V p-p +/-5% and the eye pattern is at its best shape (see FIG. 1). FIG. 1 (a)FIG. 1 (b) Poor eye pattern FIG. 1 (C) Good eye pattern 3T 4T5T 11T RadioFans.CN 收音机爱 好者资料库 - 10 - IMPORTANT NOTES INSTRUCTION FOR HANDLING OPTICAL SYSTEM BLOCK PICK-UP Electrostatic

34、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. 1. Ground for Human Body

35、 Be sure to wear a ground band (1M ohm) that is properly to remove any static electricity that may be charged on the body. 2. Ground for Work Bench Be sure to place a conductive sheet (1M ohm) or copper plate with proper grounding on the work bench or other sur- face on which the pick-up is to be pl

36、aced. 3. Because the static electricity charge on the clothing does not discharge through the body grounding band, do not let clothing to get in contact with the pick-up unit. PRECAUTIONS FOR CHECKING BEAM EMISSION The laser beam of this unit is focused on the reflecting surface of the objective len

37、s in the optical system block. Therefore, keep your eyes at least 12 inches (30 cm) away from the objective lens when the laser diode is ON. (Operation Check Method for Laser Diode and Focus Search Function.) When the POWER switch is turned ON after the chucking plate is removed, observe the objecti

38、ve lens and confirm that the following operations are performed properly. (The optical system should be at the lead-in area position when it is checked at this time.) (1) The laser should be at the innermost position after the chucking plate is removed. (2) The diffused light of the laser beam can b

39、e seen when the POWER switch is turned ON. (3) Vertical (up and down) movement of the objective lens (2 or 3 times) will take place. INCORRECTCORRECT NOTE: Laser diodes are so susceptible to damage from static electricity that even if a static discharge does not ruin the diode, it can shorten its li

40、fe or cause it to work improperly. 1.Grounding band 1M ohm 1M ohm 2.Conductive Sheet or Copper Plate RadioFans.CN 收音机爱 好者资料库 - 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

41、 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. Caution: Laser diodes are extremely susceptible to damage from static electricity. Even if a static dis

42、charge does not ruin the diode, it can shorten its life or cause it to work improperly. When replacing the pick-up, use a conductive mat, a grounded soldering iron, and so on, to protect the laser diode from static damage. Ground Conductive Wrist Band for Body Ground Line Less than 10 ohm Conductive

43、 Gum Mat Soldering Iron with Ground wire Protective soldering place for laser diode RadioFans.CN 收音机爱 好者资料库 - 12 - PCB LAYOUT DISPLAY BOARD KEY BOARD LIVE BOARD LED BOARD RadioFans.CN 收音机爱 好者资料库 - 13 - MAIN BOARD RadioFans.CN 收音机爱 好者资料库 - 14 - L302 10uH VCC R308 3K R309 3K X301 4.00M UNLD LOAD XRST

44、XLAT CLOK DATA SCOR SYSM RW/ROM/LDOFF RW/ROM/LDOFF SCLK SQCK 1/2X CD/CDR DISCO DI/SW R3314K7 R3321K R333 4K7 R328 4K7 R327 4K7 R334 4K7 SQSO SENS C301 33p C302 33p C303 0.01u 1 2 3 Q311 8050 D303 IN4148 R312 10K R311 100K C308 10u/16V VCC C304 0.1u C305 220uF/16V C307 47uF/10V D+5VVCC DAT 1 GND 2 VC

45、C 3M113 REMOTE +D5V R313 10 C420 10uF/16V TP301 M101 B.SCAN M106 OPEN/CLOSE M102 F.SCAN M107 PREV M103 REPEAT M105 RANDOM M104 TIME M109 STOP M108 NEXT M110 PLAY R303 6K2 R302 6K2 R305 2K R304 2K R307 1K R306 1K R310 3K R301 1K VCC TP303 SYSM SQSO SENS SCOR DATA CLOK XLAT XRST LOAD UNLD SCLK SQCK 1/

46、2X CD/CDR DISCO DI/SW MUTE R317 1K R314 OPEN R3151K M314 TRIG SW AUTO OFF R318 470 R336 10K D304 STANDBY RED GREEN R319 560 1 2 3 Q309 8050 1 2 3 Q310 8050 R13164K7 D307 IN4148 K501C RELAY SW +10V TP302 75/5 1 P74/AN4 2 P73/AN3 3 P72/AN2 4 P71/AN1 5 P70/AN0 6 P61/CT02 7 P60/CT1 8 P47/1NT2 9 /RESET 1

47、0 P91/XOUT 11 P90/XIN 12 VSS 13 XIN 14 XOUT 15 VCC 16 P46/T3OUT 17 P45/T1OUT 18 P44/PWM1 19 P43/BUZ01 20 P42/INT3 21 P41/INT1 22 P40/INT0 23 P87PWM0/FLD39 24 P86 25 P85 26 P84 27 VEE 28 P83 29 P82 30 STANDBY 31 POWER 32 P37/FLD31 33 P36 34 P35 35 P34 36 P33 37 P32 38 P31 39 P30 40 P17/FLD23 41 P16 4

48、2 P15 43 P14 44 P13 45 P12 46 P11 47 P10 48 P07FLD15 49 P06 50 P05 51 P04 52 P03 53 P02 54 P01 55 P00 56 P27/FLD7 57 P26 58 P25 59 P24 60 P23 61 P22 62 P21/FLD1 63 P20 64 P57 65 P56 66 P55 67 P54 68 P53 69 P52 70 P51 71 P50 72 AVSS 73 VREF 74 P65 75 P64 76 P63 77 P62 78 P77/AN7 79 76/6 80 U301 MCU -

49、VP VCC F1/01 1 F1/02 2 NP 3 6G/03 4 5G/04 5 4G/05 6 3G/06 7 NC 8 2G/07 9 1G/08 10 NC 11 P1/09 12 P2/10 13 P3/11 14 P4/12 15 NC 16 NC 17 P5/13 18 P6/14 19 P7/15 20 P8/16 21 NC 22 NC 23 P9/17 24 P10/18 25 P11/19 26 P12/20 27 NC 28 P13/21 29 P14/22 30 P15/23 31 P16/24 32 NC 33 F2/25 34 F2/26 35 TP318 VFD VFD3 VFD4 VFD5 VFD6 VFD7 VFD8 VFD9 VFD10 VFD11 VFD12 VFD13 VFD14 VFD15 VFD16 VFD17 VFD18 VFD19 VFD20 VFD21 VFD22 VFD23 VFD24 F1 F2 VFD3 VFD4 VFD5 VFD6 VFD7 VFD8 VFD9 VFD10 VFD11 VFD12 VFD13 VFD14 VFD15 VFD16 VFD17 VFD18 VFD19 VF