Cambridge-840C-cd-sm维修电路原理图.pdf

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1、Gallery Court Hankey Place London SE1 4BB UK Tel: +44 (0)20 7940 2200 Fax: +44 (0)20 7940 2233 840C Issue Date: 07thFebruary 2007 SERVICE MANUAL SPECIFICATIONS: D/A Converters Dual Analog Devices Total correlated jitter 130pS AD1955 24 bit DACs Crosstalk 1kHz -130dB Digital Filter Analog Devices Bla

2、ck Fin Crosstalk 20kHz -114dB ADSP-BF532 32 bit DSP Performing ATF Output impedance 50 ohms Up sampling to 24 bit 384 kHz Digital input word widths supported 16-24 bit Analog Filter 2 Pole Fully Differential Linear Phase Bessel Filter Digital output word widths supported 16, 20, 24 bit Frequency Res

3、ponse 20Hz 20kHz (+-0.1dB)Digital input sampling 32kHz, 44.1kHz,48kHz,88.2kHz frequencies supported 96kHz, 176.4kHz, 192kHz THD 1 KHz 0dBFs 0.0005% Digital output sampling 32 kHz 192 kHz pass through frequencies supported (including 44.1 kHz for CD) 48 kHz, 96 kHz, 192 kHz up sampled THD 1Khz -10dBF

4、s 0.0004% Audio output up sampling Fixed 24 bit, 384kHz THD 20 KHz 0dBFs 0.0007% Dimensions (H x W x D) 115 x 430 x 360 mm (4.5 x 16.9 x 14.7”) IMD (19/20 kHz) 0dBFs 120dB (24 kHz) S to N ration, A weighted 113dB AP21184/1 1 RadioFans.CN 收音机爱 好者资料库 840C SERVICE MANUAL TABLE OF CONTENTS Safety Precau

5、tions furthermore the manufacturer cannot accept responsibility for personal injury or property damage resulting therefrom. 6. When servicing, care should be taken to observe the original routing and dressing of the leads and it should be confirmed that they have been returned to normal after re-ass

6、embly. Notes on chip component replacement Never reuse a component that has been removed from a PCB Notice that the minus side of a tantalum capacitor may be damaged by heat COPYRIGHT NOTICE. 2007 Audio Partnership PLC. All rights reserved. Cambridge Audio and Azur are registered trademarks for Audi

7、o Partnership PLC. This document may not be reproduced, distributed, transmitted, displayed, published, or broadcast without the express written prior permission of Audio Partnership PLC. Alteration or removal of any trademark, copyright, or other notice from this content is prohibited. Information

8、provided in this document is provided solely for the use of official service agents in repairing and servicing Audio Partnership PLC products. 3 LASER SAFETY PRECAUTIONS Caution: These labels may be attached to the unit on the rear and inside to inform that it contains a laser component. Use of cont

9、rols or adjustments, or performance of procedures other than those specified within the service or instruction manual may result in hazardous radiation exposure. WARNING! 1. Service should only be performed by qualified personnel. 2. This equipment has been designed and manufactured to meet internat

10、ional safety standards; it is the legal responsibility of the repairer to ensure that these safety standards are maintained. 3. Any repairs must be made in accordance with the relevant safety standards. 4. It is essential that safety and EMC critical components are replaced with Cambridge Azur appro

11、ved parts only. CLASS 1 LASER PRODUCT NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK OR BASE UNIT The laser diode in the optical pick-up block may suffer electrostatic breakdown because of the potential difference generated by the charged electrostatic load, etc. on clothing and the human body. During

12、repair, pay attention to electrostatic breakdown and also use the procedure in the printed matter which is included in the repair parts. The flexible board is easily damaged and should be handled with care. NOTES ON LASER DIODE EMISSION CHECK The laser beam on this model is concerated so as to be fo

13、cused on the disc reflective surface by the objective lens in the optical pick-up block. Therefore, when checking the laser diode emission, observe from more than 30cm away from the objective lens. 4 Cambridge Audio Azur 840C CD Player Exploded Diagram To enhance viewing, please print to A35 Cambrid

14、ge Audio Azur 840C CD Player Exploded Diagram Parts List noi tpi r cseDecnere feRyrotcaFt raPPA. feRgniwarD 1PY12287003-008010E006Screw M3*8 M/C 1/K Torx Recess ZN-PT (Silver) 1PY12297003-008010E001Screw M3*8 M/C 1/K Torx Recess BLK-PT (Black) 2PY12186574-010003E000-01Azur 840C Top Panel (Black) 2PY

15、12196574-010003E000-02Azur 840C Top Panel (Silver) 3PY11276574-150013E000-01Azur 840A Side Panel, (Black) 3PY11286574-150013E000A01Azur 840A Side Panel, Silver 4PY11104006-840058E001840C DAC Module 5PY12173200-080551E000Transformer AC115/230V T08055AAzur-840C 6PY9409692-006002-201Azur V2 CD Mechan a

16、ssy with Sanyo DA11V Rev A Not ShownPY9413009-110000-002V2 CD Sanyo Laser DA11V 7PY12208584-001010E301Azur 840C UK/EU Black Front Panel Assy 7PY12218584-001000E301Azur 840C UK/EU Silver Front Panel Assy 8PY12224006-840001E000Azur 840C Display Module MBCF00003B00V0 9PY12236574-010002E000-01Azur 840C

17、Front Panel -B Artwork (Print Cool Grey 7C) Black 9PY12246574-010002E000A01Azur 840C Front Panel-S Artwork (Print Coll Grey 8C) Silver 10PY12259484-001000E041Azur-840C Control PCB Assy Rev A 11PY12269484-001000E181Azur-840C Servo PCBA Rev A 12PY5546564-010006-000-01Azur 640C.B CD Door W/Silkscreen P

18、MS Cool Grey 7C 12PY5686564-010006-000A01Azur 640C.S CD Door W/Silkscreen PMS Cool Grey 7C 13PY11226074-150004E000Azur 840A Plastic Foot (Black) AP16837* 13PY11246074-150004E000A01Azur 840A Plastic Foot (Silver) AP16837* 14PY11659805-084000E001Azur 840A/C Remote Control Assy Rev A Not ShownPY1227510

19、0-840100E100Azur 840C Multilingual User Manual (AP18655*) Exploded Drawing Parts List 6 Cambridge Audio Azur 840C CD Player Functional Block Diagram DSP DC SERVO CIRCUITCURRENTSOURCE CIRCUIT I TO V I TO V DIFFERENTIAL FILTER/AMP DIFFERENTIAL TO SINGLE ENDED UNBALANCED O/P BALANCED O/P DAC WDCLK BITC

20、LK SDATA L RESET MUTE DAC CONTROL I/F DAC1 MCLK 24.576 MHz CLOCK + BUFFER SPDIF TX CLK SPDIF RX MCLK DAC2 MCLK DAC1 MCLK DSP CLK WDCLK BITCLK SDATA L SPDIF RX SET UP I/F WDCLK BITCLK SDATA L (SPDIF SUBCODE DATA) SPDIF TX SET UP I/F AUDIO DATA LEFT FLASH MEMORY SPDIF RECEIVER TRANSMITTER AUDIO DATA L

21、&R SPDIF FLASH ADDRESS & DATA SPDIF TO LOGIC LEVEL SPDIF TO LOGIC LEVEL SPDIF I/P 1 SPDIF I/P 2 SPDIF I/P SWITCHING OPTICAL COAX COAX OPTICAL LOGIC TO SPDIF LEVEL SPDIF O/P COAX OPTICAL 44.1 kHz PASS THRO SETTING 44.1/48/96/192kHz 44.1 kHz FROM CDSERVO PASS THRO SETTING 48/96/192 kHz UP/DOWN SAMPLED

22、 CDSERVO TOMECHCONNECTIONS DC SERVO CIRCUITCURRENTSOURCE CIRCUIT I TO V I TO V DIFFERENTIAL FILTER/AMP DIFFERENTIAL TO SINGLE ENDED UNBALANCED O/P BALANCED O/P DAC WDCLK BITCLK SDATA L RESET MUTE DAC SET UP I/F DAC2 MCLK DAC PCB MECH AND SERVO PCB BCPOVRESHCEM SPDIF I/P SWITCHING CD SERVO TO LCD CON

23、NECTIONS PSU MICROCONTROLLER/DSPINTERFACE MICRO TO LCD (DOT MATRIX) MICROCONTROLER (PIC) RS232 IR UNMOD I/P O/P I/P IR MOD DRAWER OPEN CLOSE CONNECTIONS DRAWER OPEN CLOSE CONNECTIONS LCD DRAWER SPEED CONTROL KEY COMMANDS TO SERVO (DIGITAL POT FOR RES LADDER I/P) DIGITAL POT K1 K2 I/P FRONT PANNEL BU

24、TTONS MICRO TOLCD (DOT MATRIX) FRONT PANEL IR MODI/P IR MODFROMREMOTE SPDIF I/P SWITCHINGCONTROL DSP CLK AUDIO DATA L&R SPDIF TX CLK SPDIF RX MCLK RS232 (LOGIC LEVELS) MODULATED IR LEFT CH RIGHT CH RESET U BIT RESET (SPDIF SUBCODE DATA) C BIT (SPDIF SUBCODE DATA) U BIT X1 U15 U4 CN3 U5 CN4 U10 CN5 U

25、23 U23 U6 U7 U9 44.1 kHz FROM CDSERVO 44.1 kHz FROM CDSERVO U8 FRONT PANEL PCB U11 U12 U13 U19 U20 U32 U130 U131 U33 U34 U38 U37 U39 U40 U41U52 Q7 Q9 CN12 CN13 CN14U35 U50 U46U53 Q3 Q5 U1 RELAY MUTE CIRCUIT AUDIO O/P RL1 RL2 RL3 Q2 Q4 Q8 OEI (PIC MUTE) U3 2U5U4U U28 U1 U2 U3 Q1 AUDIO DATA LEFT To en

26、hance viewing, please print to A37 Cambridge Audio Azur 840C CD Player AP19135/4 Front Panel Circuit Diagram CONTROL BUS SPI DATARX SPI INT SPI DATATX SPI CLK SPI CS SERIAL TX SERIAL RX OE1 SO1_U7 SO2_U7 SO1_U9 MUTE C1 1n 50V X7R C2 1n 50V X7R 1 2 3 4 5 6 7 CN1 CONN-H7 K1 K2 POWER DETECT RESET GND +

27、5V REMOTE 1 2 3 4 5 6 7 8 CN2 CONN-H8 1 2 3 4 5 6 7 8 CN3 CONN-H8 1 2 3 4 5 6 7 CN4 CONN-H7 +5V +5V 3 OPT 1 GND 2 U1 TSOP18 IR RECEIVER C3 100n R1 47R SW1 Standby SW2 Menu SW6 Stop SW3 Select SW4 Open/Close SW5 Play/Pause SW7 Back Skip SW8 Forward Skip R2 220R LED MCLR/VPP 1 RA0/AN0 2 RA1/AN1 3 RA2/

28、AN2 4 RA3/AN3/VREF 5 RA4/T0CKI 6 RA5/AN4/SS 7 RE0/RD/AN5 8 RE1/WR/AN6 9 RB4 37 RB3/PGM 36 RB2 35 RB0/INT 33 VDD 32 VSS 31 RD7/PSP7 30 RD6/PSP6 29 RB1 34 RD5/PSP5 28 RD4/PSP4 27 RC7/RX/DT 26 RC5/SDO 24 RC4/SDI/SDA 23 RD3/PSP3 22 RD2/PSP2 21 RC6/TX/CK 25 VDD 11 VSS 12 OSC1/CLKIN 13 OSC2/CLKOUT 14 RCO/

29、T1OSO/T1CKI 15 RC1/T1OSI/CCP2 16 RC2/CCP1 17 RC3/SCK/SCL 18 RD0/PSP0 19 RE2/CS/AN7 10 RD1/PSP1 20 RB5 38 RB6/PGC 39 RB7/PGD 40 U2 PIC16F874A +5V R3 56R R4 56R C4 100nF X1 CRYSTAL FREQ=20MHz C5 22pF C6 22pF C7 10U 16V R5 100R C8 100nF R6 10K +5V VssVdd VoRS R/WE D0D1 D2D3 D4D5 D6D7 LED A LED K C9 100

30、nF +5V SERVORESET IR OUT C10 100nF +5V LED SERVORESET To Servo Board LCD Connector 2 LCD Connector 1 From Servo Board (LCD) +5V R9 220R C11 10U 16V RESET RESET +5V LCD C12 100nF ON/OFF BRIGHT BRIGHT ON/OFF Q1 BC337 R12 10K Q2 BC337 R13 10K Q3 BC337 Q4 BC337 R14 1K2 R15 10K H0 14 A1 6 GND 8 A0 7 W0 1

31、2 L1 3 L0 13 H1 1 W1 4 A2 5 SDA 10 SCL 9 VCC 16 U3 DS1803 +5V_SERVO +5V_SERVO 1 2 3 4 5 6 7 8 9 CN6 JST 2MM S9B-PH-KS 1 2 3 4 5 6 7 8 CN7 JST 2MM S8B-PH-KS R18 10K R19 10K SEG15 16 SEG14 15 SEG13 14 SEG12 13 SEG11 12 SEG10 11 SEG9 10 SEG8 9 SEG7 8 SEG6 7 SEG5 6 SEG4 5 SEG3 4 SEG2 3 SEG1 2 SEG0 1 SEG

32、16 17 SEG17 18 SEG18 19 COM1 20 COM2 21 COM3 22 COM4 23 NC 24 CN10 LCD 740C COM1 COM1 COM2 COM3 COM4 COM2 COM3 COM4 +5V R20100R R21100R R22100R R23100R R24100R R25100R R26100R R27100R R28100R R29100R R30100R R31100R R32100R CLK SD TX SD RX CS INT RS E OSC1 OSC2 U7_SO1 U7_S02 U9_S01 SCL D4 D5 D6 D7 S

33、DA SERIAL TX SERIAL RX SERVO RESET RESET OE1# MUTE IR OUT IR IN D1 LED 3MMBLUE C13 10U 16V C14 100nF 1 P1 PAD EMC M3 1 P2 PAD EMC M3 1 P3 PAD EMC M3 C15 1nF C16 1nF C17 1nF R10 300R 13 2 R11 PRE MULTI500R MCLR 4 GP4 3 CLKIN 2 Vss 8 GP0 7 GP1 6 GP2 5 Vdd 1 U4 PIC12C508 1 2 3 4 5 CN8 DATA 1 2 3 4 5 CN

34、9 DATA R33680R R34680R D2 BZX79C5V1500MW D3 BZX79C5V1500MW MGND +5V_SERVO MGND FIN 1 GND1 2 RIN 3 GND2 5 VCC 6 OUT2 7 COM 8 OUT1 9 U5 BA6218 MGND +8V 1 2 3 4 5 6 1a 2a 3a 4a 5a 6a 7 8 7a 8a CN5 CONN-8HEAD DUALBOT D4 1N4004 D5 1N4004C18 10U16V C19 100nF +8V R35 100K LED 1 P4 PAD EMC M3 1 P5 PAD EMC M

35、3 C20 1nF C21 1nF C22 100nF TO DAC BOARD CN8 (SPI) TO DAC BOARD CN9 (RS232/MUTE/SPDIF CNTRL) FROM SERVO BOARD DRAWER OPEN/CLOSE (SPI) TO MECH DRAWER OPEN/CLOSE (SPI) R7 100R R8 10OR R16 R METAL 1/8W 4k7 1/8W MetalFilm R17 R METAL 1/8W 4k7 1/8W MetalFilm R36 R METAL 1/4W 220R 1/4W MetalFilm R37 R MET

36、AL 1/4W 220R 1/4W MetalFilm D6 1N4004 D7 1N4004 To enhance viewing, please print to A38 Cambridge Audio Azur 840C CD Player AP19135/3 Front Panel Board Layout (Top Side) To enhance viewing, please print to A39 Cambridge Audio Azur 840C CD Player AP19135/3 Front Panel Board Layout (Bottom Side) To en

37、hance viewing, please print to A310 AP19138/5 AP Part No. ValueDescriptionFactory Part NoQtyComponent IdentNotes 47R0.25 W 1% Metal Fil m1R1 56R0.25 W 1% Metal Fil m2R3, R4 100R0.25 W 1% Metal Fil m16R5, R7, R8, R20-R3 2 220R0.25 W 1% Metal Fil m1012-201014E0004R2, R9, R36, R3 7 300R0.25 W 1% Metal

38、Fil m1R10 680R0.125 W 1% Metal Fil m1016-801016E0202R33, R34 1K20.25 W 1% Metal Fil m1R14 4K70.25 W 1% Metal Fil m2R16, R17 10k0.25 W 1% Metal Fil m6R6, R12, R13, R15,R18, R1 9 100K0.25 W 1% Metal Fil m1R35 PRE MULTI 500R Side adjust Footprint 9.5 x 4.5 mm VR B500 OHM +- 10% WI 3296NOXOX-XA1- 013 1R

39、11 Mount on bottom side of PCB with screw adjust facing upwards 22p6C, 5C2mm0 . 5=hc t i P,OPNc imareCF 12C, 02C, 71C-51C, 2C, 1C7mm0 . 5=hc t i PV05c imareCFn1 9mm0 . 5=hc t i PV05c imareCFn001 C3, C4, C8-C10, C12, C14, C19, C22 10uF Miniature 16V Pitch 2.5mm Height 5.2mm 4C7, C11, C13, C18 1U1REVI

40、 ECERR IPOSTV3SS6381POST Mount 13.5mm height from PCB, Please support using foam pad spacer 2U1CI PP/ I -A778F61CI P Programme with AP20058/2, Please add version label - See AP Service Dept. PY983DS18030-050DIGITAL PO T4118-030051E2001U3 4U1CI PP/ I -A805C21CI P Programme with AP20231/1, Please add

41、version label - See AP Service Dept PY260BA62185U1CIREVIRDDC PY214BC337NPN SMALL SIGNA L4Q1-Q4 1D1EULBDEL 5V1 ZENE RBZX79C5V11402-511201E20 02D2, D3 7D, 6D, 5D, 4D4RE I F ITCERESOPRUPLARENEG4004N1 PY043TACT SWITCH TACT SW 2P2T KPT-1105A (5MM) 8SW1-SW8 MPP03-+1X1SU94-CHFP02LCMM5 . 3TUOBATHGI EH, zHM0

42、2LATSYRCzHM02 MISCELLANEOUS Cambridge Audio Azur 840C Front Panel PCB BOM RESISTORS CAPACITORS SEMICONDUCTORS TRANSISTORS DIODES Note: resistors, capacitors and other generic electronic components are not usually stocked by the manufacturer. Please obtain these locally. 11 Cambridge Audio Azur 840C

43、CD Player AP18432/3 CD Servo PCB Schematic (DAC) SDATA 1 DEM/SCL 2 LRCK 3 MCLK 4 AOUTL 8 VA+ 7 AGND 6 AOUTR 5 U5 CS4333/38 C41 0.1uF C40 10uF 25V C39 10uF 25V C32 10uF 25V R75 15K R82 15K R80 12K R74 12K C42 390pF C38 390pF 3 2 1 84 U4:A NJM2100 5 6 7 U4:B NJM2100 R73 47K C33 10pF C34 10uF 25V 1 2 3

44、 CN9 GND R71 56K C43 10uF 25V R70 56K C35 0.1uF +5V L.CH R.CH +8V R81 47K C36 10pF R79 20K R72 20K C37 220uF 16V 1 2 3 CN10 GND L.CH R.CH GND 1 2 3 4 5 CN13 DIG DATA 1 2 CN14 MCLK R68 100R R69 100R 3 4 5 RL1:B 1 2 RL1:A 6 7 8 RL1:C R83 120R 0.5W R88 1K 14.5V Q3 8050 Q4 8050 C55 47uF 16V R89 330k D1

45、IN4148 R90 390R D7 IN4004 R87 100R Q6 9012 R85 560R R86 3K9 C63 4.7uF 16V D6 IN4004 1 2 3 4 5 CN11 GND ROUT LOUT MUTE1 MUTE AC R84 4K7 Q5 9012 C88 1nF D12 1N4001 To enhance viewing, please print to A312 Cambridge Audio Azur 840C CD Player AP18432/3 CD Servo PCB Schematic (Servo) SEG14 77 SEG15 76 SE

46、G16 75 SEG17 74 SEG18 73 NC 72 NC 71 NC 70 NC 69 NC 68 NC 67 NC 66 NC 65 NC 64 NC 63 NC 62 NC 61 NC 60 NC 59 NC 58 NC 57 NC 56 NC 55 NC 54 NC 53 FL/TL 52 VDD 51 SEG13 78 SEG12 79 SEG11 80 SEG10 81 SEG9 82 SEG8 83 SEG7 84 SEG6 85 SEG5 86 SEG4 87 SEG3 88 SEG2 89 SEG1 90 SEG0 91 COM3 92 COM2 93 COM1 94

47、 COM0 95 VLC 96 NC 97 NC 98 NC 99 VDD 100 VSS 50 (BOOT) 49 VAREF 48 AD K1 47 AD K2 46 AD K3 45 PWRDET 44 NC 43 NC 42 OLT 41 CLT 40 SLT 39 D-OPEN 38 D-CLOSE 37 BUS3 36 BUS2 35 BUS1 34 BUS0 33 BUCK 32 CEE 31 VSSS 1 XOUT 2 XIN 3 RESET 4 NC 5 NC 6 TEST 7 NC 8 REMOTE 9 MUTE 10 NC 11 NC 12 NC 13 SCK2 14 (

48、SI2) 15 (SO2) 16 (WAIT) 17 NC 18 NC 19 NC 20 NC 21 NC 22 NC 23 NC 24 NC 25 NC 26 NC 27 NC 28 CORW 29 RES 30 U3 TOSHCDMCU 1 2 3 4 5 6 7 CN6 LCD 1 2 3 4 5 6 7 8 CN5 LCD 1 2 3 4 5 6 7 8 CN4 LCD R22 NC R21 22K +5V C83 470uF 16V C85 100uF 16V +5V +5VDD C84 220uF 16V Q13 9014C X2 CRYSTAL 7.3728MHz C81 25p

49、F C80 25pF C79 100nF R19 3K3 R18 10K D9 1N4148 R20 1K 1 2 3 4 5 6 7 8 CN3 PROGRAMMING R65 10K R662K2 R1710K +5V R27 10K +5V +5VDD XVSS 77 VDD4 76 PXO 75 PXI 74 VSS4 73 TESIO1 72 TESIN 71 DACT 70 CKSE 69 DMOUT 68 IO3 67 IO2 66 IO1 65 IO0 64 VSS3 63 VDD3 62 FLGD 61 FLGC 60 FLGB 59 FLGA 58 SEL 57 2VREF 56 DMO 55 TEBC2 54 TEBC1 53 TEBC0 52 RFGC 51 XI 78 XO 79 XVDD 80 DVSR 81 RO 82 DVDD 83 DVR 84 LO 85 DVSL 86 TEST1 87 TEST2 88 TEST3 89 BUS0 90 BUS1 91 BUS2 92 BUS3 93 VDD 94 VSS 95 BUCK 96 CCE 97 TEST4 98 TSMOD 99 RST 10