Arcam-DivaCD92-cd-sm(2)维修电路原理图.pdf

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1、CD72/92DiVA CD72, CD92 Compact Disc Player Service Manual ARCAMARCAMIssue 1.0RadioFans.CN 收音机爱 好者资料库 Contents List ! Contents list ! Circuit description ! Upgrade procedure ! Service guide ! Circuit diagrams ! Component overlays ! Circuit board parts list ! General assembly parts list RadioFans.CN 收

2、音机爱 好者资料库CD72/CD92 Circuit Description SUMMARY The Main PCB for the DiVA CD72/92 player may be built as two different versions: ! With all components fitted for the Alpha CD72 (L887RS) ! With audio components and connectors omitted, for use as a motherboard for plug-in DAC module L816 (L888RS) for C

3、D92 The CD72 version may be converted for use with a upgrade plug-in DAC board by removing a configuration connector. The system is based on a Sony kit, comprising CDM14-5BD10 laser mechanism & loader, micro-controller and fluorescent display. The PCM 1716, as per the 1710, can be operated in either

4、 Software or Hardware mode. The default for the CD72 is hardware mode. Power Supplies & Reset/Mute Selection for 230V or 115V mains operation is made by inserting a fuse into the appropriate position. The mains transformer has three secondary windings: 1. Provides +12V and -12V supplies for the audi

5、o output circuitry via regulators Z204 and Z205. 2. This produces the digital, motor drive and fluorescent display grid supplies: +7.3V (Z206) Mechanism and motor driver supply +5V (Z208) General digital logic supply +5V (Z207) Supply to DAC +5V (Z203) Supply to system clock generator -30V (Z209) Di

6、splay grid voltage. 3. Provides an AC supply for the display filament. The power-on reset signal XRST is generated by R17 and C29. When the power switch is turned off one of its poles discharges C29 quickly. This, along with the AMUTE signal from the micro, controls the output mute transistors via l

7、evel shifter Q3. Remote Control/PIC Micro The PIC micro controller converts the RC-5 format data into the NEC format required by the Sony micro. The PIC also controls the configuration of the digital filter/DAC on the DAC board. Micro controller & Display Board The system micro controller Z212 has t

8、he following functions: ! Control of the mechanism & decoder on the CDM14 ! Control of mute, attenuation and deemphasis for the DAC ! Direct drive of the fluorescent display ! Remote control decoding ! Keyboard scanning The keyboard scanning works by connecting the keys to a resistor ladder on an AD

9、C input to the micro. Pressing a key presents a unique voltage to this input. The remote control data contains a Customer Code that identifies this as an Arcam product. The diode network D291 to D297 configures the micro to accept this code. Motor Driver The status of the drawer is indicated to the

10、micro by two micro switches INSW and OUTSW on SK205. The micro controls the drawer motor via driver Z210. DAC & System Clock The DAC is a Burr Brown PCM1716. Mute, attenuation and de-emphasis functions can be controlled via a 3-wire serial link from the system micro to pins 26, 27 & 28 via resistors

11、 R31 R32 & R33 respectively. Currently resistors R31 to R33 are not fitted and the DAC is configured for hardware control. Digital audio is input on pins 1, 2 & 3 in standard Sony format, i.e. Word Clock, Bit Clock and Data. The system clock is based around 16.9344 MHZ crystal X1 and transistor Q2.

12、This produces a stable clock with low jitter. Z202E & D provide amplification and buffering to the DAC. Analogue Filters Z1A (& Z101A) provides the basis for a 2-pole filter. Z1B (& Z101B) buffer the audio and set the output level. Digital Output An SPDIF format digital output signal is generated by

13、 the decoder on the mechanism assembly. This is passed through isolating transformer T202 to a single phono socket SK5. Optical digital output via Z2 is also tapped off the digital output signal. Power is supplied to Z2 via Z3 a 78L05 regulator. Upgrade to CD92 The CD72 includes a configuration PCB

14、connected to PL1. This provides power to the DAC and clock generator, connects the digital audio and system clock signals to the DAC and provides additional clock buffering with Z4 A&B . Removing this board removes these connections and allows the system clock generated on the DAC board to pass thro

15、ugh to the CDM14. Upgrading a CD72 to CD92 1. Disconnect the mains supply from the DiVA CD player. 2. Remove the top cover by taking out the 2 screws from the top edge of the rear panel (marked 1) and on each side (marked 2). 3. Pull off the sticky plastic gasket between the digital output socket an

16、d 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 your finger and rolling it off. We do not recommend the use of solvents. 5. Fit the 2 supplied PCB (printed circuit

17、 board) pillars to the holes in the main board on either side of the flexfoil coming from the display board. These are marked 3 on the drawing overleaf. The big end of the PCB pillars goes into the main PCB. These push in and clip home. Take great care not to damage the main circuit board. 6. Remove

18、 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 output sockets are no longer connected after the upgrade and cannot be used. However the digital output stil

19、l functions. 8. Remove the following jumpers :- PL2, PL3, PL4, PL6. Fit the following jumpers :- PL5, PL7. 9. Fit the magnetic shielding plate, by peeling off one side of (E923MC the adhesive pad) and stick to (E922MC the shielding plate). Then peel the backing off the other side of pad & Align the

20、top edge with the top of the transformer and fit centrally. It MUST align with the top edge of the transformer, if it is fitted to low to the board it may cause shorting. 10. Take static precautions first. With the aluminium extrusion of the DAC module uppermost fit the flexfoils from the module in

21、to 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 in the rear panel and angle the module sli

22、ghtly upwards to achieve this. 11. Push the module down firmly on to the support pillars. 12. Fit the supplied screws with integral washers to the 3 points marked 4 on the drawing overleaf to secure the module in place. The 2 slightly shorter screws and the shake proof washers should be fitted to th

23、e 2 points marked 6. 13. Refit the top cover, connect the unit to live mains and switch on. Press load to allow the tray to come fully out and then remove the mains lead from the unit. Remove the draw front and fit the new draw front with the CD92 / HDCD logo on. 14. Check the unit functions correct

24、ly and if you have an HDCD disc check that a red glow is seen behind the display window when it is playing. Upgrading a CD72 ( TEXT ) to CD92 ( TEXT ) 1. Disconnect the mains supply from the DiVA CD player. 2. Remove the top cover by taking out the 2 screws from the top edge of the rear panel (marke

25、d 1) and on each side (marked 2). 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 your fi

26、nger 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 flexfoil coming from the display board. These are marked 3 on the drawing overleaf. The big end of the PCB pillars goes int

27、o 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 the upgrade and cannot be used. However the digital output still functions. 7. Set the main board jumper settings

28、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. Fit the magnetic shielding plate ( part no E922MC ) to the adhesive pad ( part no E923MC). Peel the backing off the other side of the mains transformer. Align the top edge with t

29、he top of the transformer and fit centrally. 9. Take static precautions first. With the aluminium extrusion of the DAC module uppermost fit the flexfoils from the module in to the appropriate sockets in the main board, ensuring they are pushed fully home. If they are not pushed fully home, the unit

30、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 in the rear panel and angle the module slightly upwards to achieve this. 10. Push the module down firmly on to the support pillars. 11. Fit the supplied screws with inte

31、gral washers to the 3 points marked 4 on the drawing overleaf to secure the module in place. The 2 slightly shorter screws and the shake proof washers should be fitted to the 2 points marked 6. 12. Refit the top cover, connect the unit to live mains and switch on. Press load to allow the tray to com

32、e fully out and then remove the mains lead from the unit. Remove the draw front and fit the new draw front with the CD92 / HDCD logo on. 13. Check the unit functions correctly and if you have an HDCD disc check that a red glow is seen behind the display window when it is playing 342216 CD72 / CD92 S

33、ervice Guide Fault diagnostics Fault Action No power Check mains fuse Check power supply rails No Audio output Check for digital output, if ok then check power supply voltages Check DAC chip Intermittent noise on output Check Dac chip Fails to respond to commands Check supply to remote circuit Check

34、 remote flex foil cable Check for +4.9volts on RX201 o/p Fails to read disc Check mech supply Check clock signal Laser optic moves to end stop position Caused by failure of clock signal to the mech Check mech supply Check clock signal No Display Check filament voltage 3.1vac Check flex foil cable Ch

35、eck for dry joints on micro and display Spurious display readout Check for dry joints on display board Power supply test points Position Voltage DGND 0 volts PL6 +12 volts PL3 -12 volts R65 +11 volts Z206 o/p +7.3 volts - mech supply Z207 o/p +5 volts - DAC supply Z208 o/p +5 volts Z209 o/p -30 volt

36、s SK291 across pins 1 and 32 3.1 volts AC display filament Hints & tips ! When upgrading from CD72 to CD92 remember to fit the steel plate to the transformer, this reduces noise. ! The CDM14 mech ( part no. B2009 ) is interchangeable between the Alpha7 series and the DiVA CD72/92 non text version. !

37、 Please note that the CD72/92 TEXT units use a different mech ( part no. B2012 ), the display and main boards are also different and therefore are not interchangeable parts. ! Voltage conversion 230/115VAC by changing the internal fuse position and fitting the correct rated fuse. 100VAC requires a d

38、ifferent transformer. 12345678ABCD87654321DCBAISSUEDRAWING NO.DRAWING TITLEDrawn by:DATEFilenameECO No.DESCRIPTION OF CHANGEG:DATAECOECO AGENDA00_1093 L887PB_2L887_2L887_2.ddb - L887c1_2.prjA & R Cambridge Ltd.Pembroke AvenueDenny Industrial CentreWaterbeachCambridge CB5 9PBCD72, CD92 Project SheetC

39、ircuit DiagramL887C1_2CW12-Oct-2000INITIALSDate Printed14SheetofNotes:LK1LINK10NPLK2LINK10NPLK3LINK10NPLK4LINK10NPLK5LINK10NPLK6LINK10NPLK7LINK10NPLK8LINK10NPLK9LINK10NPLK10LINK10NPLK11LINK10NPLK13LINK10NPLK15LINK10NPLK16LINK10NPLK17LINK10NPLK18LINK10NPLK19LINK10NPLK130LINK10NPLK21LINK10NPLK22LINK10

40、NPLK23LINK10NPLK25LINK10NPLK28LINK10NPLK29LINK10NPLK30LINK10NPLK31LINK10NPLK33LINK10NPLK35LINK10NPLK37LINK10NPLK38LINK10NPLK39LINK10NPLK40LINK10NPLK41LINK10NPLK42LINK10NPLK43LINK10NPLK44LINK10NPLK46LINK10NPLK47LINK10NPLK49LINK10NPLK50LINK10NPLK51LINK10NPLK52LINK10NPLK53LINK10NPLK54LINK10NPLK55LINK10

41、NPLK56LINK10NPLK57LINK10NPLK58LINK10NPLK59LINK10NPLK60LINK10NPLK61LINK10NPLK62LINK10NPLK63LINK10NPLK64LINK10NPLK65LINK10NPLK67LINK10NPLK68LINK10NPLK69LINK10NPLK70LINK10NPLK71LINK10NPPhoto StripPSPHOTO_STRIPUpdate BoxA2UPDATE_BOXLK72LINK10NPLK73LINK10NPLK74LINK10NPLK75LINK10NPLK76LINK10NPLK77LINK10NP

42、LK78LINK10NPLK79LINK10NPLK80LINK10NPLK81LINK10NPLK82LINK10NPLK83LINK10NPLK85LINK10NPLK86LINK10NPLK87LINK10NPLK88LINK10NPLK89LINK10NPLK90LINK10NPLK91LINK10NPLK92LINK10NPLK93LINK10NPF4T160MASPTL1TOOLING3.0FD_2FIDUCIALLK94LINK10NPLK95LINK10NPLK97LINK10NPTL3TOOLING3.0TL4TOOLING3.0TL5TOOLING3.0LinksDocum

43、entationTooling Holes & Alignment MarksSpare FusePaper MarkerA2 HorizontalDD3DD_A2HPaper MarkerA2 VerticalDD2DD_A2VCEM1, 2 OZ CuPCB MATERIALDD5CEM1_20ZFOR ROS PROGRAMME INCLUDE A7 FOR ALPHA 7 CDLK98LINK10NPLK99LINK10NPFD_3FIDUCIALFD_4FIDUCIALPCBPCBL887PB_2TL6TOOLING_OPTWF07-04-00ANEW PROTOTYPE-LK96L

44、INK10NPLK107LINK10NP12Z4A74HC1434Z4B74HC1456Z4C74HC1489Z4D74HC141011Z4E74HC141213Z4F74HC14147Z4G74HC14C58100N CDR6747R MFR68330R MF12345678910111213141516SK2DIL16 HSKTAlpha 7 CD Configuration PlugLDINLDOUTINOUTFILAFILB4MHZL887C2_2L887C2_2.SCHDEEMSMUTEAMUTERMINPGMLCLKDATASCORSQCKXRSTLDONXLTSENSESUBQL

45、887C3_2L887C3_2.SCHFILAFILBK0K1K0K1INOUTLDINLDOUT4MHZDEEMAMUTESMUTERMINPGMLCLKDATASCORSQCKXRSTLDONXLTSENSESUBQL887C4_2L887C4_2.SCHEL1LCD CHAIREL2LCD CHAIRLK108LINK10NPLK109LINK10NPLK110LINK10NPLK111LINK10NP+C100010U ELLK120LINK10NPLK119LINK10NPLK118LINK10NPLK117LINK10NPLK125LINK10NPLK124LINK10NPLK12

46、3LINK10NPLK122LINK10NPLK121LINK10NPLK127LINK10NPLK126LINK10NPGround decoupling LK135LINK10NPLK133LINK10NPLK132LINK10NPLK136LINK10NPFD_1FIDUCIALCL13-07-00REVISIONSBCL03-08-00PRODUCTION RELEASE1CW11-10-00TRACKS MOVED TO CLEAR PILLARS & C64 ADDED FOR EMCCL15-09-00EARTH LINK 8M101 ADDED1.100_108300_1093

47、212345678ABCD87654321DCBAISSUEDRAWING NO.DRAWING TITLEDrawn by:DATEFilenameECO No.DESCRIPTION OF CHANGEG:DATAECOECO AGENDA00_1093 L887PB_2L887_2L887_2.ddb - L887c2_2.schA & R Cambridge Ltd.Pembroke AvenueDenny Industrial CentreWaterbeachCambridge CB5 9PBCD72, CD92 CD PlayersCircuit DiagramL887C2_2CW

48、12-Oct-2000INITIALSDate Printed24SheetofNotes:F1T160MAD121N4003F+C34100U EL 100V+C363M3 EL+C3710U ELR38330R MFR411K6 MF+C431M0 25VD131N4003FCDM14 Supply +7.3VVinIADJAVoutOZ207LM317TR43330R MFR421K0 MFD141N4003FDAC Supply +5VR44 1R0 FUR451R0 FUVinIADJAVoutOZ204LM317TVinIADJAVoutOZ205LM337TR39220R MFD

49、151N4003FD161N4003FR551K2 MF12345SK2058K2005C5510N CD+C41100U ELLOADOUTLOADINGNDINSWOUTSW1234567891011121314151617181920212223SK204FFC23VLDINLDOUTINOUTP7VFILAFILBVinIGNDGVoutOZ208 7805+C42100U ELVinIGNDGVoutOZ2097915R51 22R FUR5222R FUD1715V 400MW+C35100U EL 100VD187V5 400MWR5333K MFPower connector

50、to DAC PCBP12VN12VP7VP5VP5V DACN30VP11VAC1AC2ACACAC2AC1D221N4003FD231N4003FR58 10R FULIVENEUTP22VUNN22VUNN12VP12VP11VP11VSWP7VP5VDACP5VAGNDDGNDFILAFILASWLOADOUTLOADININSWOUTSWRLYVN30VACAUD112345678ABCD87654321DCBA12345678ABCD87654321DCBAISSUEDRAWING NO.DRAWING TITLEDrawn by:DATEFilenameECO No.DESCRI