Cambridge-340A-int-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 340A 340A Issue Date: 18th June 2004 _ SERVICE MANUAL _ SPECIFICATIONS: Power Output 40W (into 8) 50W (into 4) Max Power Consumption 345W Total Harmonic Distortion 1kHz 0.009% 20kHz 0.09% Frequency Respon

2、se (-1dB) 5Hz 50kHz S to N Ration (unweighted) 99dB Slew Rate (into 8) 20V/uS Dimensions (HxWxD) mm 70 x 430 x 310 Inches 2.8 x 16.9 x 12.2 Weight Kg 6.2 Lbs 13.6 AP15844/1 1RadioFans.CN 收音机爱 好者资料库 340A SERVICE MANUAL TABLE OF CONTENTS Safety Precautions & Important Notes 3 Main Assembly BOM 4/5 Mic

3、ro controller PCB Schematic (PICs/Switches/LEDs) 6 Micro controller PCB Layout (Top Side) 7 Micro controller PCB Layout (Bottom Side) 8 Front Panel PCB Assembly BOM 9 Main PCB Schematic (Input Select) 10 Main PCB Schematic (Power Amplifiers) 11 Main PCB Schematic (Power Supplies) 12 Main PCB Schemat

4、ic (Tone Control) 13 Main PCB Layout (Top Side) 14 Main PCB Layout (Bottom Side) 15 Main PCB BOM 16-18 IC Pin Layout Details 19/20 Silver Black Differences BOM 21 2RadioFans.CN 收音机爱 好者资料库SAFETY PRECAUTIONS & IMPORTANT NOTES SAFETY PRECAUTIONS & IMPORTANT NOTES 1.Check that the rear of the product in

5、dicates the correct supply voltage for you area. 2. The lighting flash with the arrowhead within an equilateral triangle is intended to alert the user or service agent to the presence of dangerous voltages within the product enclosure that may be of sufficient magnitude to constitute a risk of elect

6、ric shock to persons. 3. The exclamation point within an equilateral triangle is intended to alert the user or service agent to the presence of important operating and maintenance (Servicing) instructions in the literature accompanying the appliance. 4. This product complies with EEC Low Voltage (73

7、/23/EEC) and Electromagnetic Compatibility (89/336/EEC) Directives when used and serviced in accordance with this manual. For continued compliance all components marked safety and EMC critical must only be replaced by Cambridge Audio approved parts. 5. Any unauthorised design alterations or addition

8、s will void the manufacturers warranty; 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 be

9、en returned to normal after re-assembly. 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. COPYRIGHT NOTICE. 2005 Audio Partnership PLC. All rights reserved. Cambrid

10、ge Audio and Azur are registered trademarks of Audio 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 n

11、otice from this content is prohibited. Information provided in this document is provided solely for the use of official service agents in repairing and servicing Audio Partnership PLC products. 3AP14861/4AP PART No.DRAWING NODESCRIPTIONQTYCOMMENTSChassis AssemblyAP14160/1Bottom Panel1PY541AP12652/2F

12、oot Moulding Silver4Position In Place on Bottom PanelPY544AP12883/3 Foot Pad4Affix on Foot Using Adhesive SurfaceM3 X 8 Plastite Pozi Pan4Fix Feet To Bottom Panel.7mm Plastic Support9Push Snap Fit On Bottom Panel7mm Plastic Support4Resting Under PCB fastened to Bottom PanelAP14775/17mm Plastic Stand

13、off ( Square Snap - In)6Fastening PCB to Bottom PanelM3 X 8 Plastite Pozi Pan6To hold PCB to Square snap-in Stand-offsAP14561/3Transformer toroidal 230V1Transformer bolt M8 56mm thread length1Supplied with Transformer. Secures transformerDished transformer plate 70 mm diam1Supplied with Transformer.

14、 On top of transformerRubber Washer2Supplied with Transformer. One is fitted under the transformer and one on the top, under dished washerM8 nut1Supplied with Transformer. Secures transformerM8 plain washer1Supplied with Transformer. Secures transformerM8 locking washer1Supplied with Transformer. Se

15、cures transformerAP15528/1Cambridge Toroidal 67mm label 1Stick to top of dished transformer plate 70 mm diam.AP14862/2Insulation Sheet1To Be Positioned Over Standoffs Under Power PCBM4 X 12 Pozi Pan Machine Bolt1Fix Through Earthing Point hole on Bottom PanelM4 Nut Standard1Used To Fix Above BoltsM4

16、 Lock Washer1For Earth BoltsEarth point label1Place next to earth point bolt on bottom of chassisPCB Gerber AP14Main PCB Assembly BOM1Fixes onto the Bottom Panel With 7mm Plastic Standoffs. Built to BOM AP15173/2Front Panel AssemblyAP14159/1Sub Panel 1Fasten in place between the Ledges of the Front

17、Panel, Align Up The Power Button HolesAP12931/1Lightguide3Fasten To Subplate. Input select LEDsAP12931/1Lightguide (half of)0.5Fasten To Subplate. Power LEDM3 X 6 Pozi Pan Stp Screw4Affixes Three Lightguide To SubplatePY638AP14157/1Front Panel (Punched And Printed) Silver1Extrusion Details AP12738*

18、& Screened With Artwork AP14826/1 & AP14828/2AP12935/1IR Lens1Glued In Place On The Front PanelM3 X 6 C/S Pozi Machine Screw7Fasten The Sub Plate to the Front Panel. Only 7 screws are fitted out of a possible 8. See drawing AP15536/1PCB Gerber AP14IR PCB Assembly (part of F/P PCB assembly)1Fitted on

19、to the Front Panel, bom is AP15185/2Washer Nylon M3, 1mm Thk1Fitted between Front Panel and IR PCBM2.6 x 4mm Pan hd Poz Taptite1Use to fix IR PCB onto SubPanelAP12934/17mm TAC Switch Cushion6Position on the 7mm tact switch Buttons, down the main shaft affix using adhesive provided on the cushion.AP1

20、2925/17mm TAC Switch Button6Position In Place On The Front PanelAP12926/27mm Push Switch Button2Fitted to SW1 & 2 on main PCBPCB Gerber AP14Front Panel & MicroController PCB Assembly BOM1Fixes onto the Sub Panel With M3 M/C Screws. Built to BOM AP 15185/2M3 X 6 Pozi Pan Machine Screw7Used For Fixing

21、 The Front Panel Pcbs To The Subplate StandoffsSide Panel AssemblyAP12725/2Pressed Side Panel (2 Ridge)2AP12727/1Front Plastic Support (2 Ridge With Captive M2.6 Nuts)2Position at Front within Side PanelsAP12728/1Rear Plastic Support (2 Ridge With Captive M2.6 Nuts)2Position at Rear within Side Pane

22、lsM2.6 X 8 C/S Pozi Plastite8To Affix Side Panels To Plastic InsertsRear Panel AssemblyAP14162/2Rear Panel Printed 1Screened With Artwork AP14830/3M3 X 10 Pozi Pan Plastite8To fix speaker terminal and Phono sockets connectors to Rear PanelM4 X 8 Pozi Pan Plastite2To fix IEC Power connector to Rear P

23、anelCambridge Azur 340A Main Assembly BOM4AP PART No.DRAWING NODESCRIPTIONQTYCOMMENTSFinal assemblyAP11879/3Opus Control Box Powerswitch 1Position in Place on the Front PanelAP14819/1Push Switch Bar Extension1Affix and glue to Power BarCD4P AB05aPower Bar 1Fitted to SW3 on main PCBAP15512/1Front Pan

24、el Insulation Sheet1Attach to main PCB with two tie-wrapsTie-wraps (plastic ties) Width 2.5mm2Attach insulation strip to main PCBPY592AP10209/3Cambridge Selector Knob Mk3 Silver3AP10224/1Cambridge Knob Insert Mk23Insert Into Selector KnobsPY590AP12750/2Cambridge New Range Amp Volume Knob Silver1AP13

25、361/1A600 Volume Knob Blue Plastic Insert1Insert Into Volume KnobAP13360/1A600 Volume Knob Aluminium Skin1Glued and taped In Place On Volume KnobM3 X 10 Pozi Pan Plastite4To fix rear panel to side panelsM2.6 X 6 Pozi Pan Machine Screw12To fix Bottom Panel To Side, Front And Rear PanelsM2.6 x ?4To fi

26、x Bottom Panel To Side Panels (at corners)AP14865/1Cambridge Azur 340A Microcontroller Cableform1From Main PCB J2 to Front Panel PCB CN2AP14896/1Cambridge Azur 340A Volume Control Cableform1From Front Panel PCB CN5 to Volume Pot MotorAP15204/1Cambridge Azur 340A Earth Lead1From earth pin of IEC Scok

27、et (CN3) on main PCB to Chassis earth studM4 Nut Standard1Used To Fix earth lead to earth studM4 Lock Washer1For above nutLED wireform is attached to main PCBGlue power LED into light-guideLiddingAP13340/1Lidding Tape For Front And Rear Panels2Fix To The Correct Surfaces For Lid AP13342/1Lidding Tap

28、e For Side Panels2Fix To The Correct Surfaces For Lid PY640AP14161/1340A Top Panel (Silver)1Position Top Of The ProductPY516M2.6 X 6 C/S Torx Machine Screw (Silver)8To Affix Top Panel to plastic Inserts, Side, Rear and Front PanelPackagingSerial Number Label, Blank (6.5X35.5mm)1print with serial num

29、ber label and attached to rear panelAP13612/1Azur 2 Ridge Woven Bag1Pack 340A Unit InsideAP13504/2Poly Endcap Packaging2AP13613/1Azur Woven Bag For Remote Control1Pack Remote Control Inside, Azur Remote Control Complete. Model No RC-340AC/540AC/640AC1Fit into Poly Endcap, buttons to face polystyrene

30、, Packing in Rebate ProvidedAAA Alkaline Batteries3For Remote. Place In Instruction Manual PolybagPY637AP15509/1340A Amp Instruction Manual1Polybag 173X260X4C mm1For Instruction Manual and Remote Batteries1830mm AC IEC Power Cord Set BS Standard Fused 3 AMP1Must Be Bs ApprovedAP13505/1Carton Packagi

31、ng With Handle1Printed To Artwork AP13716/1AP14696/1Carton Label (Model No.) 1For BoxBlue Tape Seal For Cambridge Carton1NOTES:Issue 1 - 15.03.2004Issue 2 - 23.04.20045Cambridge Azur 340A Intergrated AmplifierAP14518/1 Microcontroller PCB Schematic (PICs/Switches/LEDs)RC617RC516RC415RC314RC213RC112R

32、C011OSC210RA02RA24MCLR/Vpp1RA13RA35RB122RB728RA46RA57Vss28OSC19RB223RB324RB627RB425RB526Vss19RC718Vdd20RB021U1PIC16F72CRS1FREQ=4MHz12CN5H2 2.54mm 90C6100nFIN1GND12RIN3NC4GND25VCC6OUT27COM8OUT19U2BA6218+5VDGNDDGNDDGND+5VDGNDC5100nR4220R+5VD1CHANNEL LEDD2CHANNEL LEDD3CHANNEL LEDD4CHANNEL LEDD5CHANNEL

33、LEDD6CHANNEL LEDSW2CDSW3TUNER/DABSW5AV/MDSW1AUX/PHONOSW6TAPE MONSW4DVD+5V3OPT1GND2U3TSOP18 IR RECEIC1100nstrobedataclockclockdatastrobevol upvol downvol upvol downC347u 16VR3220RC4100n12345678CN2H8 2.54mm 90DGND+5VIR RECEIVERAUX/PHONOCDTUNER/DABTAPE MONDVDAV/MD123CN3CONN-H3123CN4CONN-H3MOTOR CONTROL

34、CONN TO MAIN PCBMUTE+5VDGNDPORT B HAS WEAK PULLUPS 250uA typIN-CIRCUIT PROGRAMMING CONNECTORR1100K+5VDGND+5VGNDVppCLK123456CN1ICPGNDData I/ODGNDMUTETO MOTORVOLUME POT+5V+5VOUTPUT RELAYIR INDC OFFSETOUTPUT RELAYR247RHI = NORMALC210U 16V SM ELTSOP1835/376 mA86-756-8687998To enhance viewing, please pri

35、nt to A36Cambridge Azur 340A Intergrated AmplifierAP14518/1 Microcontroller PCB Board Layout (Top Side)86-756-8687998To enhance viewing, please print to A37Cambridge Azur 340A Intergrated AmplifierAP14518/1 Micrcontroller PCB Board Layout (Bottom Side)86-756-8687998To enhance viewing, please print t

36、o A38AP15185/3AP PART No.DRAWING NoDESCRIPTIONQTYDESIGNATORCOMMENTS47RResistor 0.25W 1% metal film1R2220RResistor 0.25W 1% metal film2R3, R4100KResistor 0.25W 1% metal film1R1100nFCeramic NP0 or C0G 10%4C1, C4-C647uF16V Radial Electrolytic1C3PY634PIC16F72-I/SP1U1Programmed with AP14904/XVersion labe

37、l for PIC1U1Print with latest software version number and stick on PIC.PY260BA6218 MOTOR DRIVE IC1U2As used in 540A. 4162-180002-300 SIL-8 packagePD092TSOP18 IR RECEIVER MODULE (VISHAY)1U3As used in 540A 3001-183600-001PY064FLAT TOP BLUE LEDS (AS PER CURRENT CAMBRIDGE)6D1-D6Please use flat top LED a

38、t standard Azur heightICPPicoplex PF-50 6-way male header1CN1VerticalH8 2.54mm 901CN2Right-angle connector 8-wayH2 2.54mm 901CN5Right-angle connector 2-wayH3 2.54mm 901CN3Right-angle connector 3-wayAP14897/1Azur 340A IR PCB cable12400-020200-000Tactile Switch6SW1, 2, 3, 4, 5, 6As used on 540A, CD, T

39、uner, AV, Phono/Aux, Tape/Mon, DVDCeramic Resonator F=4MHz1CRS110mm longWire link11LK1-11 AP14519/1Blank PCB1Note:AP14518/1-B is the IR PCB assemblyCambridge Azur 340A Front Panel PCB BOMAP14518/1-A is the switch and micro controller PCB assembly9Cambridge Azur 340A Intergrated AmplifierAP14476/3 Ma

40、in PCB Schematic (Input Select)21CN4:AQUAD PHONO3CN4:BQUAD PHONO54CN4:CQUAD PHONO6CN4:DQUAD PHONO21CN5:AQUAD PHONO3CN5:BQUAD PHONO54CN5:CQUAD PHONO6CN5:DQUAD PHONO21CN8:AQUAD PHONO3CN8:BQUAD PHONO54CN8:CQUAD PHONO6CN8:DQUAD PHONO32184U1:ANE5532567U1:BNE5532-15V+15V-15V+15VR5220KR6220KR7100RR10100RR1

41、4100RR15220KR16220KR17100RR181KR19100RR21220KR22220KR23220KR24100RR25100RR26100RR27100RR28100RR291KR30220KR31220KC447n polyC547n polyC747n polyC847n polyC1222pC1322pR32220KR3310kR3410kR3510kR3610kR37100KR38100KR39100KR40100KR41100RR46100RR47100RC26100nF 100VL CH INR CH INR50220KR51220K21CN9:ADUAL PH

42、ONO3CN9:BDUAL PHONOLEFTRIGHTTAPE RETURN RIGHTTAPE RETURN LEFT12345678J2H8 2.54mm 90+5VINPUT/TAPE SELECT SWITCHMUTEMICROCONTROLLERBOARD CONNECTOROUTPUT RELAYDC OFFSETDATACLOCKSTROBE2356ABCDLRLRTAPE OUT RAUX RCDTUNER/DABDVDAV/MDAUX LCDTAPE OUT LTUNER/DABDVDAV/MDBTBTVss1L-S12L-S23L-S34L-COM15L-S46L-S57

43、L-S68L-COM29L-S710L-S811L-COM312ST13GND14Vdd28R-S127R-S226R-S325R-COM124R-S423R-S522R-S621R-COM220R-S719R-S818R-COM317DATA16CLK15U4TC9163INPUT BUFFER+ 6 dBMAINS GNDC1410U 16VC2510U 16V86-756-8687998To enhance viewing, please print to A310Cambridge Azur 340A Intergrated AmplifierAP14476/3 Main PCB Sc

44、hematic (Power Amplifiers)R81K+10-9OUT3V-4GND7MUTE8V+1V+25NC26NC2NC311U6LM3886C2100nF 100VL1+28V-28VR927KR48RES2W 2R2R56RES2W 10RR5727KR5822KC310U 16VC2247U 16VC23100U 16V NO FITPOWER AMPLIFIER LEFTR651K+10-9OUT3V-4GND7MUTE8V+1V+25NC26NC2NC311U7LM3886C36100nF 100VL2+28V-28VR6627KR67RES2W 2R2R68RES2W

45、 10RR6927KR7022KC3710U 16VC3847U 16VC39100U 16V NO FITPOWER AMPLIFIER RIGHTPOWER AMP LEFTPOWER AMP RIGHTC40100U 50V HRC41100U 50V HRC42100U 50V HRC43100U 50V HRMUTER7147KQ1BC327+5VR7247KR7347KR7447KQ2BC337AMP MUTEAMP MUTE-28VHI = MUTESW2:ASW-DPDTSW2:BSW-DPDTSPEAKER B ON/OFFRSW1RSW2RLGNDLSW1LSW224317

46、85CN1HEADPHONE JACKR61220R 3W CR62470R 1W CR63220R 3W CR64470R 1W C12CN2:ASPKR 4-WAY43CN2:BSPKR 4-WAY56CN2:CSPKR 4-WAY87CN2:DSPKR 4-WAYLEFT: SPEAKER ALEFT: SPEAKER BRIGHTRIGHT345RL1:B12V 8A RELAY678RL1:C12V 8A RELAY12RL1:A12V 8A RELAY360RQ3BC337D91N4001R75220R1/2 W+20VR764K7OUTPUT RELAYR7747KR7847KS

47、PEAKER ASPEAKER BQ4BC327Q5BC337D101N4148D111N4148R791K8R803K3D121N4148D131N4148D141N4148D151N4148-15V+15VDC OFFSETR123K9R132K2D165V1HI = NORMALC5422U 50V NPC5522U 50V NPDC OFFSET DETECT40W 8 Ohms= 17.9 VrmsR53270KR55270KR81470RR82470RTIP = LEFTRING = RIGHT86-756-8687998To enhance viewing, please pri

48、nt to A311Cambridge Azur 340A Intergrated AmplifierAP14476/3 Main PCB Schematic (Power Supplies)earthC246800uF-50VC276800uF-50V+28V-28VD11N5402D21N5402D31N5402D41N5402F1T6A3 ALLVD!F2T6A3 ALLVD!0V23V23VF320MM T6.3AL or 3.15ALTO MAINS TRANSFORMERJ5BLUE/WHITEJ6BROWN/BLACKLNECN3IEC-SOCC34X1 10nC35X1 10n

49、C44X2 470N SUPPRESSIONFROM TRANSFORMERF420MM T1ALF520MM T1AL12SW3KDC-A04-10D51N4002D61N4002D71N4002D81N4002J7TERMINALgreenJ9TERMINALpurpleJ10TERMINALblueC451000u 35VC46470u 35VVI1VO3GND2U57805C4747u 16VC4847n polyVI1VO3GND2U87815VI2VO3GND1U97915C49100u 25VC50100u 25V+5VC5147n polyC5247n polyC5347n p

50、oly+15V-15VFROM TRANSFORMER+20VJ3TERMINALJ4TERMINALJ8TERMINALMAINS SWITCH PCBOPAMP SUPPLYMICROCONTROLLER SUPPLYPOWER AMP SUPPLYC28X2 470N SUPPRESSIONALTERNATIVE POSITIONS FORX-CAPS WITH DIFFERENT LEAD PITCHESMAINS GNDTo sheet 1R491K8P1PADP2PADPOWER LED86-756-8687998To enhance viewing, please print t