Nad-C-660-Service-Manual(1) 电路图 维修手册.pdf

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1、MODEL : C660SERVICE MANUAL NAD SERVICE MANUALC660 C660 C660 SERVICE MANUAL AUDIO CD RECORDER AUDIO CD RECORDER AUDIO CD RECORDER NAD ELECTRONICS INTERNATIONAL TORONTO NAD 2001 NAD RadioFans.CN 收音机爱 好者资料库 -29- OVERALL WIRING DIAGRAM 1 CD-RW Board ANALOG VOLUME CD-P Board PWR BoardI/O Board Front Boar

2、dH/P & OPT_IN JACK Board 30 1121 1 1 21 26 1 20 5V 5VA GND GND M12V NC 18 PICK-UPSLEDSPINDLE PWR_CTL 5V(U-COM) 12VM DGND MGND 5VM AGND 5VA PWR_FAIL 19 PICK-UPSPINDLE 51 F4F2 F1 F3 6 CD-RW LoadLoad 1 26 Sled DownloadDownload 10 1 130 1 F1 CN803 CN805 LOUT ROUT RGND RIN LOUT LGND LIN ROUT RGND RIN LOU

3、T LGND LIN ROUT 6 1 CN805 PN105 F2 F1 F2 -34V F1 -34V -34V -34V GND FLD_RST GND FLD_TXD KEYIN_1 RMC_IN FLD_CS FLD_CLK 5VF 5VU KEYIN_2 GND KEYIN_0 GND F2 F1 F2 -34V F1 -34V -34V -34V GND FLD_RST GND FLD_TXD KEYIN_1 RMC_IN FLD_CS FLD_CLK 5VF 5VU KEYIN_2 GND KEYIN_0 GND F4 PN511 5. RED 1. HP_L. F4 P505

4、 PN503 5. RED 1. HP_L. F3 1.FLD_CS . . . 20.F2 PN512 F2 PN508 6. OPT_IN 1. NC F2 6. OPT_IN 1. NC 11 HP_R MPREQ NC HP_R GND HP_L NC GNDF GND34 5VF -34V PN803 61 5V NC NC NC GND OPT_IN PN8601 PN901 PN509 9. PWR_FAIL . . . . . 1. PWR_CTL DIG_IN MPREQ CDR_EMPH CDR_EMPH_OUT CDP_33M GND P_CLK P_DATA P_LRC

5、K GND CDP_DOUT SW_STATE P_DAMOD GND DIG_F_IN PWR_MUTE GND M12V AGND 5VD1 GND -15V GND REC_TXD REC_RXD GND OPT_IN MCLK CDR_CLK CDR_LRCK GND S_MCK GND BCK DATA CDR_DATA DAMOD GND AD_CLK AD_LRCK AD_DATA LRCK CDR_MUTE_OUT XRST CDP_MUTE_OUT CDP_EMPH_OUT GND HP_L HP_R PWR_MUTE CDR_EMPH_OUT DUB_SEL R_DOUT

6、P_DOUT DIG_IN EXT_RMC OPT_IN MCLK CDR_CLK CDR_LRCK GND S_MCK GND BCK DATA CDR_DATA DAMOD GND AD_CLK AD_LRCK AD_DATA LRCK CDR_MUTE_OUT XRST CDP_MUTE_OUT CDP_EMPH_OUT GND HP_L HP_R PWR_MUTE CDR_EMPH_OUT DUB_SEL R_DOUT P_DOUT DIG_IN EXT_RMC 6. F+ . . . 1. 5VF 5V 61 P_DAMOD GND P_DAMOD HP_R 18 PN402 CN4

7、01 CN901 PN401 PN403 GND EXT_RMC XRST CDP_MUTE CDP_EMPH_OUT GND HP_L HP_R DGND 5VD2 +15V +12V -12V 12 15V GND CN403 CN701CN904 PN8901 PN507 CN201 LoadLoad DownloadDownload PN506 PN203 P202 PN201 PN101 AC2 AC1 PN504 PN502 PN501 CN802CN801 RadioFans.CN 收音机爱 好者资料库 -30- OVERALL BLOCK DIAGRAM Drive ext O

8、ptical Digital RF Amp EPROM AT27LV010A ATMEL SERVO DSP + DECODER SERVO DSP + ENC/DEC MUXMUX SRC CS8420 CIRRUS MUX Buffer Buffer u-COM u-COM ANALOG DIGITAL OPTICAL AUTOCDSVTRACKTOTALREMAINTIME SRC CDRWERASE FINALIZE RECORD SYNC DUBBING COPY PROHIBIT DUALRANDOMPROG REPEAT1ALL RANDOMPROG REPEAT1ALL MP3

9、 X2X4 HD C D R -A-60-40-20-10-303dB L TITLECHP DVD TRACKTOTALREMAINTIME ANALOG DIGITAL OPTICAL AUTOCDSVTRACKTOTALREMAINTIME SRC CDRWERASE FINALIZE RECORD SYNC DUBBING COPY PROHIBIT DUALRANDOMPROG REPEAT1A-BALL RANDOMPROG REPEAT1A-BALL MP3 X2X4X2X4 HD C DHD C DHD C D R -60-40-20-10-303dB L R R -60-40

10、-20-10-303dB-60-40-20-10-303dB L L TITLECHP DVD TRACKTOTALREMAINTIME FL DRIVE KEY Drive (Spindle,Focus,Tracking) RF Amp CDP CDRW ANALOG POWER I/O OPTICCOAX FPGA Sled DACDACADC MUX S/WS/W MUX FPGA HDCD & MP3 CS493302 CIRRUS AK4393 AKM AK5351 AKM AK4393 AKM RadioFans.CN 收音机爱 好者资料库 -31- BLOCK DIAGRAMS

11、1. CD-Play Block Diagram I / V AMP RF Amplifier (CXA2581N :Sony) Equalizer ALPC Focus Error Tracking Error LD Driver- Controller (H8/3062:Hitachi) System Control Read Channel Servo Processor Sled Servo Focus, Tracking (M63021FP: Mitsubishi) Spindle motor Stepping Sledmotor Pick-up (SF-P151EXV:Sanyo)

12、 disc Digital Servo Processor (CXD 3030R:Sony) Focus Servo Tracking Servo Spindle Servo EFM decoding CD-DA Decoder ATAPI Interface 1Mbit DRAM 1bit DAC FPGA (XC10TQ114:XILINXXILINX) CDDA/MP3 Switching Serial to Parallel Data conversion CDR -Controller CDR FPGA HDCD &MP3 CDP Dout -32- 2. CD-Record Blo

13、ck Diagram I / V AMP LD Driver RF Amplifier (CXA2551R:Sony) Equalizer ALPC Focus Error Tracking Error Wobble Detect Spindle Driver (BA6664 : Rohm) LD Driver Encoder/Decoder (OTI9790:OAK Technology) CD-Encode EFM Encode CD-Decode LPM ATIP CLV Control ATAPI I/F Digital Servo Processor Focus Servo Trac

14、king Servo Sled Servo Spindle Servo EFM decoding FPGA (XC30TQ114 :XILINXXILINX) CDDA/MP3 Switching Serial to Parallel Data conversion - Controller (HD84F/3064:Hitachi) System Control Read Channel Data Processor Servo Processor Focus Tracking Sled Driver (BA5983FM : Rohm) Spindle motor Sled motor Pic

15、k-up (KRS-200C:Sony) disc CPLD (IC310) Audio DAC(AK4393) L/R-CH Jack & Headphone MP3, HDCD (CS49300:Cirrus Logic) SRC (CS8420: Cirrus Logic) 8kHz to 96KHz 120dB Dynamic Range CDP -33- 3. I/O Block Diagram AK4394 (DAC) AK4394 (DAC) AK4394 (DAC) AK4394 (DAC) P-LRCK P-DATA P-BCLK P-LRCK P-DATA P-BCLK M

16、CK(P) MCK(R) 74HC04 BUFFER 74HC04 BUFFER ANALOG P OUTPUT ANALOG R OUTPUT ANALOG INPUT COAXIAL P OUT COAXIAL R OUT COAXIAL IN 74HC04 BUFFER 74HC04 BUFFER 74HC04 BUFFER 74HC04 BUFFER OPTICAL R OUT OPTICAL IN RELAY F R O N T AK5351 (ADC) AK5351 (ADC) 74HC04 BUFFER 74HC04 BUFFER BCK DATA LRCK 74HC04 BUF

17、FER 74HC04 BUFFER OPTICAL REC VOL. POWER DOWN MUTE DEMPH MUTE DEMPH CDP-DOUT CDR-DOUT EQ LEVEL C D R W -34- CIRCUIT DIAGRAMS 1. POWER (SMPS) CIRCUIT DIAGRAM (UL) 00. 11.10 SI2448(UL) NOTES) Warning NOTES) Parts that are shaded are critical NOTES) With respect to risk of fire or NOTES) electricial sh

18、ock. NOTES : Symbol denotes AC ground. Symbol denotes DC chassis ground. NOTE : 1. Shaded( ) parts are critical for safety. Replace only with specified part number. 2. Voltages are DC-measured with a digital voltmeter during Play mode. CIRCUIT DIAGRAMS 1. POWER (SMPS) CIRCUIT DIAGRAM (EUROPE) -35- N

19、OTE : 1. Shaded( ) parts are critical for safety. Replace only with specified part number. 2. Voltages are DC-measured with a digital voltmeter during Play mode. 00. 11. 10 SI2674(EUROPE) NOTES) Warning NOTES) Parts that are shaded are critical NOTES) With respect to risk of fire or NOTES) electrici

20、al shock. NOTES : Symbol denotes AC ground. Symbol denotes DC chassis ground. -36- 2. CD-PLAY CIRCUIT DIAGRAM -37- 3. CD-RECORD 1 CIRCUIT DIAGRAM -38- 4. CD-RECORD 2 CIRCUIT DIAGRAM -39- 5. CD-RECORD 3 CIRCUIT DIAGRAM -40- 6. I/O CIRCUIT DIAGRAM -41- 7. FRONT CIRCUIT DIAGRAM -42- PRINTED CIRCUIT BOA

21、RD DIAGRAMS 1. CD-PLAY TOP P.C.BOARD 2. CD-PLAY BOTTOM P.C.BOARD -43- 3. CD-RECORD TOP P.C.BOARD4. CD-RECORD BOTTOM P.C.BOARD -44- 5. I/O TOP P.C.BOARD LOCATION GUIDE 6 I/O BOTTOM P.C.BOARD LOCATION GUIDE -45- 7. FRONT P.C. BOARD LOCATION GUIDE -46- 8. POWER P.C.BOARD 9. H/P P.C.BOARD -47- EXPLODED

22、VIEW MAIN SECTION 259 278 403 403 259 A00 A10 A49 278 403 259 278 403 259 278 260 A10-1 A43-3 A43 401 276 401 401 401 401 275 403 403 267 264 255 256 268 265 269 405 405 267 A00-1 403-1 403-1 403-2 403-1 403-1 281 A47 300 A43-4 -48- CD PLAY SECTION 006 430 009 010 436 014 013 025 020 026 434 431 027

23、 028 029 033 033 435435 030 034 431 431 035 032 431 012 A01 A02 A00 A03 011 001 002 031 031 -49- 131 127 128 454 132 151 153 152 438 129 439 441 130 150 131 133 154 A12 A10 006 430 009 010 436 014 013 020 431 012 A01 A02 011 001 002 031 031 CD RECORD SECTION NOTE : The # part with location numbers.

24、150, 151, 152, 153, 154 are not serviceable parts. If you would like to replace these parts, order and replace the Assembly part(Location No. A12) only. Because these parts need a Mechanical precision adjustment when reassembling after disassembling. -2- CONTENTS SPECIFICATIONS . . . . . . . . . . .

25、 . . . . . . . . . . . . . 2 SERVICING PRECAUTIONS . . . . . . . . . . . . . . . . 3 ESD PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . 5 TROUBLESHOOTING GUIDE . . . . . . . . . . . . . . . 6 OVERALL WIRING DIAGRAM . . . . . . . . . . . . . . 29 BLOCK DIAGRAMS . . . . . . . . . . . . . . .

26、. . . . . . . 31 CIRCUIT DIAGRAMS . . . . . . . . . . . . . . . . . . . . . 34 PRINTED CIRCUIT BOARD DIAGRAMS . . . . . . . 41 EXPLODED VIEW . . . . . . . . . . . . . . . . . . . . . . . 47 REPLACEMENT PARTS LIST . . . . . . . . . . . . . . 50 SPECIFICATIONS Signal Format Playback Sampling Frequency

27、 44.1 kHz D/A Conversion 96kHz, Multi-Bit Delta-Sigma Conversion Oversampling 128 Times Playback Specifications Frequency Response 2Hz 20,050Hz Playback S/N 100dB Playback Dynamic Range 95dB Playback THD 0.005% / 88dB Analog Audio Output 2V RMS, 2dB (1KHz 0dB) Digital-Coaxial Output 0.5 Vpp/75 Headp

28、hone Output 0.5V RMS/32 Load (1KHz 0dB) Record Specifications Digital Dubbing Mode (X1/X2/X4)Equal to source Digital Input Sample Rate32kHz 96kHz Signal/Noise Ratio - Analog84dB Signal/Noise Ratio - External (Sourse)source-10dB Dynamic Range87dB THD0.005%/-85dB Analog Input Sensitivity 300 mV RMS 47

29、k = 0dB Digital Inputs (Direct Recording) 44.1kHz, 100 ppm/min. General Power Requirement 100240V AC, 50/60Hz Power Consumption 28 Watts Dimensions Width 17.3/440mm Height 4.4/112mm Depth 13.9/354mm Weight 14.3 lb/6.5 kg -3- SERVICING PRECAUTIONS NOTES REGARDING HANDLING OF THE PICK-UP 1. Notes for

30、transport and storage 1) The pick-up should always be left in its conductive bag until immediately prior to use. 2) The pick-up should never be subjected to external pressure or impact. 2. Repair notes 1) The pick-up incorporates a strong magnet, and so should never be brought close to magnetic mate

31、rials. 2) The pick-up should always be handled correctly and carefully, taking care to avoid external pressure and impact. If it is subjected to strong pressure or impact, the result may be an operational malfunction and/or damage to the printed-circuit board. 3) Each and every pick-up is already in

32、dividually adjusted to a high degree of precision, and for that reason the adjustment point and installation screws should absolutely never be touched. 4) Laser beams may damage the eyes! Absolutely never permit laser beams to enter the eyes! Also NEVER switch ON the power to the laser output part (

33、lens, etc.) of the pick-up if it is damaged. 5) Cleaning the lens surface If there is dust on the lens surface, the dust should be cleaned away by using an air bush (such as used for camera lens). The lens is held by a delicate spring. When cleaning the lens surface, therefore, a cot- ton swab shoul

34、d be used, taking care not to distort this. 6) Never attempt to disassemble the pick-up. Spring by excess pressure. If the lens is extremely dirty, apply isopropyl alcohol to the cotton swab. (Do not use any other liquid cleaners, because they will damage the lens.) Take care not to use too much of

35、this alcohol on the swab, and do not allow the alcohol to get inside the pick-up. Storage in conductive bag NEVER look directly at the laser beam, and dont let contact fingers or other exposed skin. Magnet How to hold the pick-up Conductive Sheet Cotton swab Pressure Pressure Drop impact -4- NOTES R

36、EGARDING COMPACT DISC PLAYER REPAIRS 1. Preparations 1) Compact disc players incorporate a great many ICs as well as the pick-up (laser diode). These compo- nents are sensitive to, and easily affected by, static electricity. If such static electricity is high voltage, components can be damaged, and

37、for that reason components should be handled with care. 2) The pick-up is composed of many optical components and other high-precision components. Care must be taken, therefore, to avoid repair or storage where the temperature of humidity is high, where strong magnetism is present, or where there is

38、 excessive dust. 2. Notes for repair 1) Before replacing a component part, first disconnect the power supply lead wire from the unit 2) All equipment, measuring instruments and tools must be grounded. 3) The workbench should be covered with a conductive sheet and grounded. When removing the laser pi

39、ck-up from its conductive bag, do not place the pick-up on the bag. (This is because there is the possibility of damage by static electricity.) 4) To prevent AC leakage, the metal part of the soldering iron should be grounded. 5) Workers should be grounded by an armband (1M) 6) Care should be taken

40、not to permit the laser pick-up to come in contact with clothing, in order to prevent static electricity changes in the clothing to escape from the armband. 7) The laser beam from the pick-up should NEVER be directly facing the eyes or bare skin. Resistor (1 Mohm) Conductive Sheet Resistor (1 Mohm)

41、Armband -5- ESD PRECAUTIONS Electrostatically Sensitive Devices (ESD) Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components com- monly are called Electrostatically Sensitive Devices (ESD). Examples of typical ESD devices are integrated cir- cuits and s

42、ome field-effect transistors and semiconductor chip components. The following techniques should be used to help reduce the incidence of component damage caused by static electricity. 1. Immediately before handling any semiconductor component or semiconductor-equipped assembly, drain off any electros

43、tatic charge on your body by touching a known earth ground. Alternatively, obtain and wear a commercially available discharging wrist strap device, which should be removed for potential shock reasons prior to applying power to the unit under test. 2. After removing an electrical assembly equipped wi

44、th ESD devices, place the assembly on a conductive sur- face such as aluminum foil, to prevent electrostatic charge buildup or exposure of the assembly. 3. Use only a grounded-tip soldering iron to solder or unsolder ESD devices. 4. Use only an anti-static solder removal device. Some solder removal

45、devices not classified as anti-static can generate electrical charges sufficient to damage ESD devices. 5. Do not use freon-propelled chemicals. These can generate electrical charges sufficient to damage ESD devices. 6. Do not remove a replacement ESD device from its protective package until immedia

46、tely before you are ready to install it. (Most replacement ESD devices are packaged with leads electrically shorted together by conductive foam, aluminum foil or comparable conductive materials). 7. Immediately before removing the protective material from the leads of a replacement ESD device, touch

47、 the protective material to the chassis or circuit assembly into which the device will by installed. CAUTION : BE SURE NO POWER IS APPLIED TO THE CHASSIS OR CIRCUIT, AND OBSERVE ALL OTHER SAFETY PRECAUTIONS. 8. Minimize bodily motions when handing unpackaged replacement ESD devices. (Otherwise harml

48、ess motion such as the brushing together of your clothes fabric or the lifting of your foot from a carpeted floor can gen- erate static electricity sufficient to damage an ESD device). -6- TROUBLESHOOTING GUIDE 1. Initial Lead-in Operation 2. Trouble List (Circuit) (In the Initial Lead-in Operation

49、Mode) A. Pick-Up doesnt move to the inner-track. B. Pick-Up lens doesnt move up and down. C. Disc doesnt rotate. D. The Laser (RED) of Pick-Up doesnt light. E. TOC isnt read. 3. Troubleshooting Guide (In the Initial Lead-in Operation Mode) -7- IC503 IC503 IC505IC505 IC505 IC502IC502 IC505 56910 IC502 IC502 IC505 12 W 13 V 13 U? IC502 IC502 IC505 FAO 56 4 12 -8- IC501 2.8 IC502, -9- CN401 8 PIN (PWR_MUTE) CN401 14 , 15 , 16 PIN INPUT (LRCK, DATA, BCK) IC706 IC706 IC706 Check the CDP part Check the conne