Arcam-CD82-cd-sm维修电路原理图.pdf

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1、CD82 DiVA CD82 Compact Disc Player (Text) Service Manual ARCAM Issue 1.0 RadioFans.CN 收音机爱 好者资料库 Contents List Section Issue Service guide ! Technical specification - ! CD82 upgrade instructions - Main board L934 ! Circuit description - ! Component overlay 5.0 ! Parts list 4.1 ! Circuit diagrams 4.1

2、 DAC board L949 ! Component overlay 3.0 ! Parts list 3.05 ! Circuit diagrams 3.0 Mechanical Mechanical parts list - RadioFans.CN 收音机爱 好者资料库 Service Guide Contents ! Technical specification ! CD82 Upgrade fitting instructions CD82 Technical Specifications Digital to Analogue conversion DAC Dual mono

3、24 bit Wolfson Laser pick-up 3 beam Laser wavelength 780nm Numeric aperture 0.45 Dynamic range 106dB Signal to noise ratio (CCIR) 100dB Harmonic distortion (0dB, 1kHz) 0.005% Frequency response (+-0.5dB) 5Hz-20kHz Output level (0dB) 2.3Vrms Output impedance 50 ohm Minimum recommended load 5k ohm Gen

4、eral Digital output connection 75 ohm co-axial Power consumption 35VA Dimensions (including feet) W430 x D290 x H84mm Weight (net) 5.5kg Weight (packed) 7.0kg Supplied accessories Mains lead CR314 remote control 2 x AAA batteries DiVA CD82 UPGRADE FITTING INSTRUCTIONS Compatible with: Alpha 7, 7SE,

5、8, 8SE CD players DiVA CD72, CD72 (text) CD players Note When converting from 8SE to CD82 you will no longer be able to decode the extra information on the few HDCD discs available, however the sound quality offered by the CD82 upgrade is significantly superior on all discs to that of the original 8

6、SE. Kit Contents 1x CD82 DAC module L951AY 1x Upgrade instruction sheet E836UI 1x Silver CD82 drawer front assembly E993AY 1x Black CD82 drawer front assembly E993AYB 2x PCB support locking pillars H037 5x Self tapping screws HF4V09B 1x Product registration card SH000 1x CD82 authentication label E9

7、54SL 1x Surface cleaner wipe F227 Upgrading an Alpha 7/7SE, 8/8SE to CD82 DAC For 7/7SE follow steps 1,2,3A onwards (not 3B) For 8/8SE follow steps 1,2,3B onwards (not 3A) 1. Disconnect the mains supply from the Alpha CD player. 2. Remove the top cover by taking out the 2 screws from the top edge of

8、 the rear panel marked ! (Pozi no.1 driver required and on each side marked (Pozi no.2 driver required). 3A. For Alpha 7/7SE to DiVA CD82 DAC upgrade only Pull off the sticky plastic gasket between the digital output socket and the audio output sockets to reveal the 4 audio output socket holes throu

9、gh which the DAC sockets will pass. Any remnants of adhesive can be removed by rubbing it gently with your finger and rolling it off. We do not recommend the use of solvents. Fit the 2 supplied PCB (printed circuit board) pillars to the holes in the main board on either side of the flex foil coming

10、from the display board, these are marked # in figure 1. The big end of each PCB pillar goes into the main PCB, these push in and clip home. Take great care not to damage the main circuit board. Remove the Alpha 7/7SE Configuration Module (the small vertically mounted PCB in the centre of the main bo

11、ard). It will not be needed once the new DAC board is fitted. Note: The original nickel-plated audio output sockets are no longer connected after the upgrade and cannot be used. However the digital output still functions. 3B. For Alpha 8/8SE to DiVA CD82 DAC upgrade only Remove the 5 screws holding

12、the Alpha 8/8SE board in place. Squeeze the top of the two PCB pillars supporting the end of the aluminium extrusion and lift the extrusion up and out of the unit. If the flex foils do not come away with the DAC board then remove them as well. 4. Take static precautions first. With the aluminium ext

13、rusion of the CD82 DAC module uppermost fit the flex foils from the module into the appropriate sockets in the main board, ensuring they are pushed fully home. You may find it helps to slide the module into the unit so that the audio output sockets fit through the holes in the rear panel and angle t

14、he module slightly upwards to achieve this. 5. Push the module down firmly on to the support pillars, ensure it is latched in place. 6. Fit the supplied screws with integral washers to the 5 points marked $ in figure 1 (T10 Torq driver required) to hold the module in place. 7. Refit the top cover an

15、d attach the CD82 authentication label to the underside of the CD player Upgrading a CD72 to CD82 1. Disconnect the mains supply from the DiVA CD player. 2. Remove the top cover by taking out the 3 screws from the top edge of the rear panel marked ! (T10 Torq driver required) and on each side marked

16、 (T20 Torq driver required) in figure 1. 3. Pull off the sticky plastic gasket between the digital output socket and the audio output sockets to reveal the 4 audio output socket holes through which the DAC board sockets will pass. 4. Any remnants of adhesive can be removed by rubbing it gently with

17、your finger and rolling it off. We do not recommend the use of solvents. 5. Fit the 2 supplied PCB (printed circuit board) pillars to the holes in the main board on either side of the flex foil coming from the display board, these are marked # in figure 1. The big end of each PCB pillar goes into th

18、e main PCB, these push in and clip home. Take great care not to damage the main circuit board. 6. Remove the Configuration Module (the small vertically mounted PCB in the centre of the main board). It will not be needed once the new DAC board is fitted. 7. Note: The original nickel-plated audio outp

19、ut sockets are no longer connected after the upgrade and cannot be used. However the digital output still functions. 8. Remove the following jumpers: - PL2, PL3, PL4, PL6 Fit the following jumpers: - PL5, PL7 9. Take static precautions first. With the aluminium extrusion of the CD82 DAC module upper

20、most fit the flex foils from the module into the appropriate sockets in the main board, ensuring they are pushed fully home. If they are not pushed fully home, the unit may not read discs. You may find it helps to slide the module into the unit so that the audio output sockets fit through the holes

21、in the rear panel and angle the module slightly upwards to achieve this. 10. Push the module down firmly on to the support pillars, ensure it is latched in place. 11. Fit the supplied screws with integral washers to the 5 points marked $ in figure 1 (T10 Torq driver required) to hold the module in p

22、lace. Refit the top cover. 12. Removing the drawer front - connect a mains supply to the unit; press load and allow the tray to fully open; remove the mains supply from the unit. Hold the drawer tightly with one hand and with the other pull the drawer front forward away from the player (pull hard).

23、Remove any remnants of tape from the drawer front mechanism; clean the drawer mechanism front using the surface cleaner wipe provided. 13. Fitting the new CD82 drawer front - connect a mains supply to the unit and allow the drawer to close automatically. Remove the backing from the tape attached to

24、the new drawer front and carefully align the drawer front with the mechanism and press gently together; reposition the drawer front if necessary and press firmly to the unit. Upgrading a CD72 (TEXT) to CD82 (TEXT) 1. Disconnect the mains supply from the DiVA CD player. 2. Remove the top cover by tak

25、ing out the 3 screws from the top edge of the rear panel marked ! (T10 Torq driver required) and on each side marked (T20 Torq driver required) in figure 1. 3. Pull off the sticky plastic gasket between the digital output socket and the audio output sockets to reveal the 4 audio output socket holes

26、through which the DAC board sockets will pass. 4. Any remnants of adhesive can be removed by rubbing it gently with your finger and rolling it off. We do not recommend the use of solvents. 5. Fit the 2 supplied PCB (printed circuit board) pillars to the holes in the main board on either side of the

27、flex foil coming from the display board, these are marked # in figure 1. The big end of each PCB pillar goes into the main PCB, these push in and clip home. Take great care not to damage the main circuit board. 6. Note: The original nickel-plated audio output sockets are no longer connected after th

28、e upgrade and cannot be used. However the digital output still functions. 7. Set the main board jumper settings as listed below: - PL200 ON PL201 ON PL202 ON PL203 OFF PL204 ON PL205 OFF PL300 2 and 3 PL400 OFF PL401 OFF PL402 OFF 8. Take static precautions first. With the aluminium extrusion of the

29、 DAC module uppermost fit the flex foils from the module into the appropriate sockets in the main board, ensuring they are pushed fully home. If they are not pushed fully home, the unit may not read discs. You may find it helps to slide the module into the unit so that the audio output sockets fit t

30、hrough the holes in the rear panel and angle the module slightly upwards to achieve this. 9. Push the module down firmly on to the support pillars, ensure it is latched in place. 10. Fit the supplied screws with integral washers to the 5 points marked $ on figure 1 (T10 Torq driver required) to secu

31、re the module in place. Refit the top cover. 11. Removing the drawer front - connect a mains supply to the unit; press load and allow the tray to fully open; remove the mains supply from the unit. Hold the drawer tightly with one hand and with the other pull the drawer front forward away from the pl

32、ayer (pull hard). Remove any remnants of tape from the drawer front mechanism; clean the drawer mechanism front using the surface cleaner wipe provided. 12. Fitting the new CD82 drawer front - connect a mains supply to the unit and allow the drawer to close automatically. Remove the backing from the

33、 tape attached to the new drawer front and carefully align the drawer front with the mechanism and press gently together; reposition the drawer front if necessary and press firmly to the unit. Figure 1 Main Board L934 Contents ! Circuit description ! Component overlay ! Parts list ! Circuit diagrams

34、 CD72, CD82 IC404 pin 11 is then low, and the output switches high (RESET is de-asserted). DAC & System Clock The DAC is a Burr Brown PCM1716E, the DAC is configured for hardware control. Digital audio is input on pins 1, 2 & 3 in standard Red Book Audio format, i.e. Word Clock, Bit Clock and Data.

35、The system clock is based around 16.9344 MHZ crystal X400 and transistor TR402. This produces a stable clock with low jitter. IC404A & B buffer the clock as linear buffers. IC404C & D buffer the individual mech & DAC clock lines. The CD82 & CD92 system clock is generated on the DAC board. The clock

36、and data signals LRCK, ADATA and BCLK from the mechanism connector SK300 are double buffered by IC300 before being delivered to the DAC. The system clock is delivered to the mech via two-position jumper PL300. The clock source is selected to be either from the main board (CD62/72) or from the DAC bo

37、ard (CD82/CD92) by the position of JP300. When the 82 or 92DAC is fitted as an upgrade to a CD72, removing JP400 disables the main board clock Analogue Output Left channel: IC400A and IC400B are cascaded 69kHz 2nd order low-pass Bessel filters. The output devices internal to both op-amps in IC400 ar

38、e “pulled down” to the negative supply rail to force operation in class A (one output device is conducting at all times and crossover distortion is eliminated). IC402A is a DC servo with a very low cut off frequency, acting to impose a non-zero voltage virtual earth at the non-inverting input of IC4

39、00B, thus eliminating the offsets caused by the pull- down resistors and DC-coupling the output. The right channel is the same as the left channel. IC401A & B are used as the buffer and filter. Microcontroller & Display Board The system microcontroller IC100 serves the following functions: ! Control

40、 of the mechanism & decoder on the CDM14 mechanism ! Control of mute, attenuation and de-emphasis for the DAC ! Direct drive of the fluorescent display ! Remote control decoding ! Keyboard scanning ! 82/92DAC muting The keyboard scanning works by connecting the keys to a resistor ladder on an ADC in

41、put to the micro. Pressing a key presents a unique voltage to this input, which the micro is pre-programmed to interpret accordingly. The remote control data contains a Customer Code that identifies this as an Arcam product. The diode network D100 to D106 configures the micro to accept this code. Re

42、mote Bus Carrier Filter & Demodulator Remote control commands can be delivered over wire to SK500 for multi-room applications. Incoming signals are attenuated and clipped by resistors and D500. L500 and C508 form a parallel resonant circuit at approximately 37kHz. This demodulates the incoming signa

43、l and the output is passed to IC501A where it is chopped, low pass filtered and fed to IC501B to provide the RC5 output signal. Digital Output The decoder on the mechanism assembly generates an SPDIF format digital output signal. This is passed to buffer IC500A. IC500B through E are used in parallel

44、 to provide a transformer less 75-ohm source impedance to a single phono socket SK501. Optical digital output via IC502 is also tapped off the digital output signal via IC500F. L934 Main Board Parts List Issue 4.1 Designator PartDescription BR2003BDF01MBridge rectifier DF01M 1A 100V BR2013BDF01MBrid

45、ge rectifier DF01M 1A 100V C1002A210CERD 1N0 63V 20% RA C1012A210CERD 1N0 63V 20% RA C1022A210CERD 1N0 63V 20% RA C1032N710ELST 100U 25V C1042A410CERD 100N 63V 20% RA C1052A410CERD 100N 63V 20% RA C1062A410CERD 100N 63V 20% RA C1072A410CERD 100N 63V 20% RA C1082A410CERD 100N 63V 20% RA C1092A410CERD

46、 100N 63V 20% RA C1102N610ELST 10U 50V C1292A310CERD 10N 63V 20% RA C1512A210CERD 1N0 63V 20% RA C1522A210CERD 1N0 63V 20% RA C1532A210CERD 1N0 63V 20% RA C1542A210CERD 1N0 63V 20% RA C1552A210CERD 1N0 63V 20% RA C1562A210CERD 1N0 63V 20% RA C2002K233SUPPR CAP 3N3 250V C2012K233SUPPR CAP 3N3 250V C2

47、022K233SUPPR CAP 3N3 250V C2032D422220NF CLASS X2 CAP 275VRMS C2042A410CERD 100N 63V 20% RA C2052A410CERD 100N 63V 20% RA C2062A410CERD 100N 63V 20% RA C2072AB410CERD 100N 100V -20% +80% RA C2082AB410CERD 100N 100V -20% +80% RA C2092A410CERD 100N 63V 20% RA C2102N833ELST 3M3 25V C2112N810CELST 1M0 3

48、5V C2122N810CELST 1M0 35V C2152K410PEST 100N 63V 10% C2182N710ELST 100U 25V C2192N710ELST 100U 25V C2202N710ELST 100U 25V C2212N710ELST 100U 25V C2222N710ELST 100U 25V C2232N810ELST 1M0 25V C2242N810ELST 1M0 25V C2252N710BELST 100U 100V C2262N710BELST 100U 100V C2272N710BELST 100U 100V C2282N810AELST 1M0 10V C2292N810AELST 1M0 10V C2302N710ELST 100U 25V C2312N610ELST 10U 50V C3002A410CERD 100N 63V 20% RA C3012A410CERD 100N 63V 20% RA C3022A410CERD 100N 63V 20% RA C3032A410CERD 100N 63V 20% RA C3042A110CERD 100P 50V -20% +80% RA C3052N710ELST 100U 25V