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 1 RadioFans.CN 收音机爱 好者资料库 340A SERVICE MANUAL TABLE OF CONTENTS Safety Precautions furthermore the manufacturer cannot accept r

3、esponsibility 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-assembly. Notes on chip component replacement Never r

4、euse 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. Cambridge Audio and Azur are registered trademarks of Audio Partnership PLC. This document

5、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 provided in this document is prov

6、ided solely for the use of official service agents in repairing and servicing Audio Partnership PLC products. 3 AP14861/4 AP PART No. DRAWING NODESCRIPTIONQTYCOMMENTS Chassis Assembly AP14160/1Bottom Panel1 PY541AP12652/2Foot Moulding Silver4Position In Place on Bottom Panel PY544AP12883/3 Foot Pad4

7、Affix on Foot Using Adhesive Surface M3 X 8 Plastite Pozi Pan4Fix Feet To Bottom Panel. 7mm Plastic Support9Push Snap Fit On Bottom Panel 7mm Plastic Support4Resting Under PCB fastened to Bottom Panel AP14775/17mm Plastic Standoff ( Square Snap - In)6Fastening PCB to Bottom Panel M3 X 8 Plastite Poz

8、i Pan6To hold PCB to Square snap-in Stand-offs AP14561/3Transformer toroidal 230V1 Transformer bolt M8 56mm thread length1Supplied with Transformer. Secures transformer Dished transformer plate 70 mm diam1Supplied with Transformer. On top of transformer Rubber Washer2Supplied with Transformer. One i

9、s fitted under the transformer and one on the top, under dished washer M8 nut1Supplied with Transformer. Secures transformer M8 plain washer1Supplied with Transformer. Secures transformer M8 locking washer1Supplied with Transformer. Secures transformer AP15528/1Cambridge Toroidal 67mm label 1Stick t

10、o top of dished transformer plate 70 mm diam. AP14862/2Insulation Sheet1To Be Positioned Over Standoffs Under Power PCB M4 X 12 Pozi Pan Machine Bolt1Fix Through Earthing Point hole on Bottom Panel M4 Nut Standard1Used To Fix Above Bolts M4 Lock Washer1For Earth Bolts Earth point label1Place next to

11、 earth point bolt on bottom of chassis PCB Gerber AP14Main PCB Assembly BOM1Fixes onto the Bottom Panel With 7mm Plastic Standoffs. Built to BOM AP15173/2 Front Panel Assembly AP14159/1Sub Panel 1Fasten in place between the Ledges of the Front Panel, Align Up The Power Button Holes AP12931/1Lightgui

12、de3Fasten To Subplate. Input select LEDs AP12931/1Lightguide (half of)0.5Fasten To Subplate. Power LED M3 X 6 Pozi Pan Stp Screw4Affixes Three Lightguide To Subplate PY638AP14157/1Front Panel (Punched And Printed) Silver1Extrusion Details AP12738* & Screened With Artwork AP14826/1 & AP14828/2 AP1293

13、5/1IR Lens1Glued In Place On The Front Panel M3 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 AP15536/1 PCB Gerber AP14IR PCB Assembly (part of F/P PCB assembly)1Fitted onto the Front Panel, bom is AP15185/2 Washer Nylon

14、 M3, 1mm Thk1Fitted between Front Panel and IR PCB M2.6 x 4mm Pan hd Poz Taptite1Use to fix IR PCB onto SubPanel AP12934/17mm TAC Switch Cushion6Position on the 7mm tact switch Buttons, down the main shaft affix using adhesive provided on the cushion. AP12925/17mm TAC Switch Button6Position In Place

15、 On The Front Panel AP12926/27mm Push Switch Button2Fitted to SW1 & 2 on main PCB PCB Gerber AP14Front Panel & MicroController PCB Assembly BOM 1Fixes onto the Sub Panel With M3 M/C Screws. Built to BOM AP 15185/2 M3 X 6 Pozi Pan Machine Screw7Used For Fixing The Front Panel Pcbs To The Subplate Sta

16、ndoffs Side Panel Assembly AP12725/2Pressed Side Panel (2 Ridge)2 AP12727/1Front Plastic Support (2 Ridge With Captive M2.6 Nuts) 2Position at Front within Side Panels AP12728/1Rear Plastic Support (2 Ridge With Captive M2.6 Nuts) 2Position at Rear within Side Panels M2.6 X 8 C/S Pozi Plastite8To Af

17、fix Side Panels To Plastic Inserts Rear Panel Assembly AP14162/2Rear Panel Printed 1Screened With Artwork AP14830/3 M3 X 10 Pozi Pan Plastite8To fix speaker terminal and Phono sockets connectors to Rear Panel M4 X 8 Pozi Pan Plastite2To fix IEC Power connector to Rear Panel Cambridge Azur 340A Main

18、Assembly BOM 4 AP PART No. DRAWING NODESCRIPTIONQTYCOMMENTS Final assembly AP11879/3Opus Control Box Powerswitch 1Position in Place on the Front Panel AP14819/1Push Switch Bar Extension1Affix and glue to Power Bar CD4P AB05aPower Bar 1Fitted to SW3 on main PCB AP15512/1Front Panel Insulation Sheet1A

19、ttach to main PCB with two tie-wraps Tie-wraps (plastic ties) Width 2.5mm2Attach insulation strip to main PCB PY592AP10209/3Cambridge Selector Knob Mk3 Silver3 AP10224/1Cambridge Knob Insert Mk23Insert Into Selector Knobs PY590AP12750/2Cambridge New Range Amp Volume Knob Silver1 AP13361/1A600 Volume

20、 Knob Blue Plastic Insert1Insert Into Volume Knob AP13360/1A600 Volume Knob Aluminium Skin1Glued and taped In Place On Volume Knob M3 X 10 Pozi Pan Plastite4To fix rear panel to side panels M2.6 X 6 Pozi Pan Machine Screw12To fix Bottom Panel To Side, Front And Rear Panels M2.6 x ?4To fix Bottom Pan

21、el To Side Panels (at corners) AP14865/1Cambridge Azur 340A Microcontroller Cableform 1From Main PCB J2 to Front Panel PCB CN2 AP14896/1Cambridge Azur 340A Volume Control Cableform 1From Front Panel PCB CN5 to Volume Pot Motor AP15204/1Cambridge Azur 340A Earth Lead1From earth pin of IEC Scoket (CN3

22、) on main PCB to Chassis earth stud M4 Nut Standard1Used To Fix earth lead to earth stud M4 Lock Washer1For above nut LED wireform is attached to main PCBGlue power LED into light-guide Lidding AP13340/1Lidding Tape For Front And Rear Panels2Fix To The Correct Surfaces For Lid AP13342/1Lidding Tape

23、For Side Panels2Fix To The Correct Surfaces For Lid PY640AP14161/1340A Top Panel (Silver)1Position Top Of The Product PY516M2.6 X 6 C/S Torx Machine Screw (Silver)8To Affix Top Panel to plastic Inserts, Side, Rear and Front Panel Packaging Serial Number Label, Blank (6.5X35.5mm)1print with serial nu

24、mber label and attached to rear panel AP13612/1Azur 2 Ridge Woven Bag1Pack 340A Unit Inside AP13504/2Poly Endcap Packaging2 AP13613/1Azur Woven Bag For Remote Control1Pack Remote Control Inside, Azur Remote Control Complete. Model No RC- 340AC/540AC/640AC 1Fit into Poly Endcap, buttons to face polys

25、tyrene, Packing in Rebate Provided AAA Alkaline Batteries3For Remote. Place In Instruction Manual Polybag PY637AP15509/1340A Amp Instruction Manual1 Polybag 173X260X4C mm1For Instruction Manual and Remote Batteries 1830mm AC IEC Power Cord Set BS Standard Fused 3 AMP 1Must Be Bs Approved AP13505/1Ca

26、rton Packaging With Handle1Printed To Artwork AP13716/1 AP14696/1Carton Label (Model No.) 1For Box Blue Tape Seal For Cambridge Carton1 NOTES:Issue 1 - 15.03.2004 Issue 2 - 23.04.2004 5 Cambridge Azur 340A Intergrated Amplifier AP14518/1 Microcontroller PCB Schematic (PICs/Switches/LEDs) RC6 17 RC5

27、16 RC4 15 RC3 14 RC2 13 RC1 12 RC0 11 OSC2 10 RA0 2 RA2 4 MCLR/Vpp 1 RA1 3 RA3 5 RB1 22 RB7 28 RA4 6 RA5 7 Vss2 8 OSC1 9 RB2 23 RB3 24 RB6 27 RB4 25 RB5 26 Vss 19 RC7 18 Vdd 20 RB0 21 U1 PIC16F72 CRS1 FREQ=4MHz 1 2 CN5 H2 2.54mm 90 C6 100n FIN 1 GND1 2 RIN 3 NC 4 GND2 5 VCC 6 OUT2 7 COM 8 OUT1 9 U2

28、BA6218 +5V DGND DGND DGND +5V DGND C5 100n R4 220R +5V D1 CHANNEL LED D2 CHANNEL LED D3 CHANNEL LED D4 CHANNEL LED D5 CHANNEL LED D6 CHANNEL LED SW2 CD SW3 TUNER/DAB SW5 AV/MD SW1 AUX/PHONO SW6 TAPE MON SW4 DVD +5V 3 OPT 1 GND 2 U3 TSOP18 IR RECEI C1 100n strobe data clockclock data strobe vol up vo

29、l down vol up vol down C3 47u 16V R3 220R C4 100n 1 2 3 4 5 6 7 8 CN2 H8 2.54mm 90 DGND +5V IR RECEIVER AUX/PHONOCDTUNER/DAB TAPE MON DVDAV/MD 1 2 3 CN3 CONN-H3 1 2 3 CN4 CONN-H3 MOTOR CONTROL CONN TO MAIN PCB MUTE +5V DGND PORT B HAS WEAK PULLUPS 250uA typ IN-CIRCUIT PROGRAMMING CONNECTOR R1 100K +

30、5V DGND +5V GND Vpp CLK 1 2 3 4 5 6 CN1 ICP GND Data I/O DGND MUTE TO MOTOR VOLUME POT +5V+5V OUTPUT RELAY IR IN DC OFFSET OUTPUT RELAY R2 47R HI = NORMAL C2 10U 16V SM EL TSOP1835/37 6 mA 86-756-8687998 To enhance viewing, please print to A36 Cambridge Azur 340A Intergrated Amplifier AP14518/1 Micr

31、ocontroller PCB Board Layout (Top Side) 86-756-8687998 To enhance viewing, please print to A37 Cambridge Azur 340A Intergrated Amplifier AP14518/1 Micrcontroller PCB Board Layout (Bottom Side) 86-756-8687998 To enhance viewing, please print to A38 AP15185/3 AP PART No. DRAWING NoDESCRIPTIONQTYDESIGN

32、ATORCOMMENTS 47RResistor 0.25W 1% metal film1R2 220RResistor 0.25W 1% metal film2R3, R4 100KResistor 0.25W 1% metal film1R1 100nFCeramic NP0 or C0G 10%4C1, C4-C6 47uF16V Radial Electrolytic1C3 PY634PIC16F72-I/SP1U1Programmed with AP14904/X Version label for PIC1U1 Print with latest software version

33、number and stick on PIC. PY260BA6218 MOTOR DRIVE IC 1U2 As used in 540A. 4162-180002-300 SIL-8 package PD092TSOP18 IR RECEIVER MODULE (VISHAY)1U3As used in 540A 3001-183600-001 PY064FLAT TOP BLUE LEDS (AS PER CURRENT CAMBRIDGE) 6D1-D6 Please use flat top LED at standard Azur height ICPPicoplex PF-50

34、 6-way male header1CN1Vertical H8 2.54mm 901CN2Right-angle connector 8-way H2 2.54mm 901CN5Right-angle connector 2-way H3 2.54mm 901CN3Right-angle connector 3-way AP14897/1Azur 340A IR PCB cable1 2400-020200-000Tactile Switch6SW1, 2, 3, 4, 5, 6 As used on 540A, CD, Tuner, AV, Phono/Aux, Tape/Mon, DV

35、D Ceramic Resonator F=4MHz1CRS1 10mm longWire link11LK1-11 AP14519/1Blank PCB1 Note: AP14518/1-B is the IR PCB assembly Cambridge Azur 340A Front Panel PCB BOM AP14518/1-A is the switch and micro controller PCB assembly 9 Cambridge Azur 340A Intergrated Amplifier AP14476/3 Main PCB Schematic (Input

36、Select) 2 1 CN4:A QUAD PHONO 3 CN4:B QUAD PHONO 5 4 CN4:C QUAD PHONO 6 CN4:D QUAD PHONO 2 1 CN5:A QUAD PHONO 3 CN5:B QUAD PHONO 5 4 CN5:C QUAD PHONO 6 CN5:D QUAD PHONO 2 1 CN8:A QUAD PHONO 3 CN8:B QUAD PHONO 5 4 CN8:C QUAD PHONO 6 CN8:D QUAD PHONO 3 2 1 84 U1:A NE5532 5 6 7 U1:B NE5532 -15V +15V -15

37、V+15V R5 220K R6 220K R7 100R R10 100R R14 100R R15 220K R16 220K R17 100R R18 1K R19 100R R21 220K R22 220K R23 220K R24 100R R25 100R R26 100R R27 100R R28 100R R29 1K R30 220K R31 220K C4 47n poly C5 47n poly C7 47n poly C8 47n poly C12 22p C13 22p R32 220K R33 10k R34 10k R35 10k R36 10k R37 100

38、K R38 100K R39 100K R40 100K R41 100R R46 100R R47 100R C26 100nF 100V L CH IN R CH IN R50 220K R51 220K 2 1 CN9:A DUAL PHONO 3 CN9:B DUAL PHONO LEFTRIGHT TAPE RETURN RIGHT TAPE RETURN LEFT 1 2 3 4 5 6 7 8 J2 H8 2.54mm 90 +5V INPUT/TAPE SELECT SWITCH MUTE MICROCONTROLLER BOARD CONNECTOR OUTPUT RELAY

39、 DC OFFSET DATA CLOCK STROBE 2356 ABCD LRLR TAPE OUT R AUX R CD TUNER/DAB DVD AV/MD AUX L CD TAPE OUT L TUNER/DAB DVD AV/MD B TBT Vss 1 L-S1 2 L-S2 3 L-S3 4 L-COM1 5 L-S4 6 L-S5 7 L-S6 8 L-COM2 9 L-S7 10 L-S8 11 L-COM3 12 ST 13 GND 14 Vdd 28 R-S1 27 R-S2 26 R-S3 25 R-COM1 24 R-S4 23 R-S5 22 R-S6 21

40、R-COM2 20 R-S7 19 R-S8 18 R-COM3 17 DATA 16 CLK 15 U4 TC9163 INPUT BUFFER + 6 dB MAINS GND C14 10U 16V C25 10U 16V 86-756-8687998 To enhance viewing, please print to A310 Cambridge Azur 340A Intergrated Amplifier AP14476/3 Main PCB Schematic (Power Amplifiers) R8 1K + 10 - 9 OUT 3 V- 4 GND 7 MUTE 8

41、V+ 1 V+2 5 NC2 6 NC 2 NC3 11U6 LM3886 C2 100nF 100V L1 +28V -28V R9 27K R48 RES2W 2R2 R56 RES2W 10R R5727K R58 22K C3 10U 16V C22 47U 16V C23 100U 16V NO FIT POWER AMPLIFIER LEFT R65 1K + 10 - 9 OUT 3 V- 4 GND 7 MUTE 8 V+ 1 V+2 5 NC2 6 NC 2 NC3 11U7 LM3886 C36 100nF 100V L2 +28V -28V R66 27K R67 RES

42、2W 2R2 R68 RES2W 10R R6927K R70 22K C37 10U 16V C38 47U 16V C39 100U 16V NO FIT POWER AMPLIFIER RIGHT POWER AMP LEFT POWER AMP RIGHT C40 100U 50V HR C41 100U 50V HR C42 100U 50V HR C43 100U 50V HR MUTE R71 47K Q1 BC327 +5V R72 47K R73 47K R74 47K Q2 BC337 AMP MUTE AMP MUTE -28V HI = MUTE SW2:A SW-DP

43、DT SW2:B SW-DPDT SPEAKER B ON/OFF RSW1 RSW2 R L GND LSW1 LSW2 2 4 3 1 7 8 5 CN1 HEADPHONE JACK R61 220R 3W C R62 470R 1W C R63 220R 3W C R64 470R 1W C 1 2 CN2:A SPKR 4-WAY 4 3 CN2:B SPKR 4-WAY 5 6 CN2:C SPKR 4-WAY 8 7 CN2:D SPKR 4-WAY LEFT: SPEAKER A LEFT: SPEAKER B RIGHT RIGHT 3 4 5 RL1:B 12V 8A RE

44、LAY 6 7 8 RL1:C 12V 8A RELAY 1 2 RL1:A 12V 8A RELAY 360R Q3 BC337 D9 1N4001 R75 220R 1/2 W +20V R76 4K7 OUTPUT RELAY R77 47K R78 47K SPEAKER A SPEAKER B Q4 BC327 Q5 BC337 D10 1N4148 D11 1N4148 R79 1K8 R80 3K3 D12 1N4148 D13 1N4148 D14 1N4148 D15 1N4148 -15V +15V DC OFFSET R12 3K9 R13 2K2 D16 5V1 HI

45、= NORMAL C54 22U 50V NP C55 22U 50V NP DC OFFSET DETECT 40W 8 Ohms = 17.9 Vrms R53270K R55270K R81 470R R82 470R TIP = LEFT RING = RIGHT 86-756-8687998 To enhance viewing, please print to A311 Cambridge Azur 340A Intergrated Amplifier AP14476/3 Main PCB Schematic (Power Supplies) earth C24 6800uF-50

46、V C27 6800uF-50V +28V -28V D1 1N5402 D2 1N5402 D3 1N5402 D4 1N5402 F1 T6A3 AL LVD! F2 T6A3 AL LVD! 0V 23V 23V F3 20MM T6.3AL or 3.15AL TO MAINS TRANSFORMER J5 BLUE/WHITE J6 BROWN/BLACK L N E CN3 IEC-SOC C34 X1 10n C35 X1 10n C44 X2 470N SUPPRESSION FROM TRANSFORMER F4 20MM T1AL F5 20MM T1AL 12 SW3 K

47、DC-A04-10 D5 1N4002 D6 1N4002 D7 1N4002 D8 1N4002 J7 TERMINAL green J9 TERMINAL purple J10 TERMINAL blue C45 1000u 35V C46 470u 35V VI 1 VO 3 GND 2 U5 7805 C47 47u 16V C48 47n poly VI 1 VO 3 GND 2 U8 7815 VI 2 VO 3 GND 1 U9 7915 C49 100u 25V C50 100u 25V +5V C51 47n poly C52 47n poly C53 47n poly +1

48、5V -15V FROM TRANSFORMER +20V J3 TERMINAL J4 TERMINAL J8 TERMINAL MAINS SWITCH PCB OPAMP SUPPLY MICROCONTROLLER SUPPLY POWER AMP SUPPLY C28 X2 470N SUPPRESSION ALTERNATIVE POSITIONS FOR X-CAPS WITH DIFFERENT LEAD PITCHES MAINS GND To sheet 1 R49 1K8 P1 PAD P2 PAD POWER LED 86-756-8687998 To enhance

49、viewing, please print to A312 Cambridge Azur 340A Intergrated Amplifier AP14476/3 Main PCB Schematic (Tone Control) C1 330p poly R1 22k R2 4k7 R3 4k7 R4 8k2 R11 8k2 C6 150n poly C9 10p SW1:A SW-DPDT DEFEAT -15V +15V C10 330p poly R20 22k R42 4k7 R43 4k7 R44 8k2 R45 8k2 C11 150n poly C15 10p SW1:B SW-DPDT DEFEAT C16 47n poly C17 47n poly 3 2 1 84 U2:A NE5532 5 6