Cambridge-840Av2-int-sm 电路图 维修手册.pdf

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1、Audio Partnership, Gallery Court, Hankey Place, London, SE1 4BB, UK Tel: +44 (0)20 7940 2200 Fax: +44 (0)20 7940 2233 840A v2 Issue Date: January 2008 SERVICE MANUAL Specifications Power Output: 120W RMS into 8 Ohms 200W RMS into 4 Ohms Input Impedance: Input 1 (balanced) 20 kOhm Inputs 2-7 20 kOhm

2、Tape Input 20 kOhm THD (unweighted): 0.001% 1 kHz at 80% of rated power 93 dB Power amp damping factor: 110 at 1 kHz Max. Power Consumption: 800W Min. Power Consumption: Active (no signal) 70W Standby 7W Bass: Max bass boost/cut +/- 10 dB at 10 Hz Treble: Max treble boost/cut +/- 7.5 dB at 20 kHz Di

3、mensions (H x W x D): 115 x 430 x 385mm (4.5 x 16.9 x 15.2”) Weight: 15.0kg (33Lbs) AP23462/1 RadioFans.CN 收音机爱 好者资料库 CAMBRIDGE AUDIO AZUR 840A v2 AMPLIFIER SERVICE MANUAL TABLE OF CONTENTS Specifications 1 Table of Contents 2-3 Front Panel Control Details 4 Rear Panel Connection Details 5 Remote Co

4、ntrol Details 6 Safety Precautions please refer to the Amplifier setup section of this manual for more information. Phones Allows for the connection of stereo headphones with a Jack plug. Headphones with an impedance of between 32 and 600 ohms are recommended. When the headphones are connected, the

5、loudspeaker relays are released switching off the output to the loudspeakers (speakers A and B). Speaker A/B Press to scroll through the speaker sets connected to the loudspeaker terminals on the back panel (speaker sets A, B or A and B). This can be used for listening to an extra set of loudspeaker

6、s in another room. Please note that care should be taken when choosing speakers if two loudspeakers are going to be used on each channel. If the combined resistance measured on the loudspeaker terminals is too low the amplifier may not switch out of Standby mode until a suitable load resistance is d

7、etected. For more information refer to the CAP5 section of this manual. Note: When using one pair of speakers, use speakers with a nominal impedance of between 4-8 ohms. When using two pairs of speakers, use speakers with a nominal impedance of between 6-8 ohms each. Mode Press to switch between Vol

8、ume and Balance modes. Press and hold to to enter the 840A V2 System Configure menu. Infrared sensor Receives IR commands from the supplied Azur remote control. A clear unobstructed line of sight between the remote control and the sensor is required. Pin 2 - Hot (in-phase); Pin 3 - Cold (phase-inver

9、ted). Use the Balanced/Unbalanced switch (Item 9) to select the connection type you wish to use. When using either the balanced or unbalanced input, make sure that no cables or equipment are connected to the unused input, as this may degrade operation. The unused input does not require to be termina

10、ted and this should not be done. Input 1 Balanced/Unbalanced switch Use to select the connection type for Input 1. Inputs 1-7 These inputs are suitable for any line level source equipment such as CD players, DAB or FM/AM tuners etc. Note: These inputs are for analog audio signals only. They should n

11、ot be connected to the digital output of a CD player or any other digital device. Tape/Rec In/Out Connect to a tape deck or to the analog output sockets on a MiniDisc, portable digital music player or CD recorder using an interconnect cable from the recorders Line Out sockets to the amplifiers Tape

12、In sockets. The Tape Input circuit of the 840A V2 is a monitor type, different from the other 7 inputs. For the 7 normal inputs, the source selected for listening to will be sent out of the Tape Out for recording. The source currently being listened to and (optionally) recorded is then shown on the

13、front panel display. However, when the Tape Input is selected a solid circle will appear beside TAPE MON indicating that the Tape Input is now being listened to with a different source being sent out of the Tape Out for recording. The recording source is also shown by a solid circle by the selected

14、input and can be changed by pressing the other source buttons. To switch Tape Monitor off, simply press the Tape Mon input select button again, toggling this function off. This feature is most useful when using 3-head analog cassette decks which allow the signal being recorded to be played back live

15、 off tape (via a 3rd head) whilst it is simultaneously recorded. It is then possible by toggling the Tape Monitor input on and off to compare directly in real time the original and recorded signal so that adjustments to the recording parameters of the tape machine can be made (consult the manual of

16、your 3-head analog cassette deck for full details). Preamp Out Connect these sockets to the inputs on an external power amplifier(s) or active subwoofers etc. 1 1 2 3 465 8 101112 2 3 7 5 6 8 9 11 4 10 9 7 12 Cambridge Audio Azur 840A v2 Amplifier Rear Panel Connection Details 5 The 840A V2 is suppl

17、ied with an Azur Navigator remote control that operates both this amplifier and Cambridge Audio Azur CD players. Insert the supplied AAA batteries to activate. The functions relevant to the amplifier are as follows: Standby/On Switches the amplifier between On and Standby mode. Numerical buttons 1-8

18、 Press to change the input source to the amplifier. Button 8 toggles Tape Monitor on/off. Bright Adjust the backlight of the front panel display; bright, dim or off. Mode Press to switch between Volume and Balance modes. Mute Mutes the audio on the amplifier. The mute mode is indicated by MUTE appea

19、ring and the volume level being replaced by two flashing dashes in the display. Press again to cancel mute. Volume Increase or decrease the volume of the amplifier output. The functions relevant to a connected Azur CD player are as follows: Open/Close Opens and closes the disc tray. Play / Stop / Pa

20、use Press the relevant button to play, stop or pause the CD. Skip Right Skip - Press once to skip forward by one track on the CD. Press and hold to skip forwards through tracks. Left Skip - Press once to skip backward by one track on the CD. Press and hold to skip backwards through tracks. Search Pr

21、ess and hold to search within the selected track. Right button to fast forward, left button to rewind. Repeat, Random, Remain Refer to the Operating instructions section of your CD player manual for information on the functions of these buttons. Remote control Vol Vol Randomn i ameRt aepeR Mode Inpu

22、tInput Input Input Input Input InputInput Mode The 840A V2 remote can also control the basic functions of Apple iPods when mounted in Cambridge Audios iPod docks, Apples Universal Dock or other docks compatible with the Apple Remote. Refer to your docks instruction manual on how to connect it to you

23、r amplifier. To use the Azur remote to control the docked iPod, hold down the Input 7 button whilst pressing one of the following buttons: Play/Pause Press to play the iPod, press again to pause play. Skip Press once to skip forwards or backwards one track. Menu Press to return to the iPod main menu

24、. iPodTMcompatibility Cambridge Audio Azur 840A v2 Amplifier Remote Control Details 6 SAFETY PRECAUTIONS 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 d

25、ressing of the leads and it should be confirmed that they have been 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. 2007 Audi

26、o Partnership PLC. All rights reserved. Cambridge Audio and Azur are registered trademarks for 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

27、 removal of any trademark, copyright, or other notice 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. Cambridge Audio Azur 840A v2 Amplifier Safety Guidelines 7

28、 Cambridge Audio Azur 840A v2 Amplifier Exploded Diagram 8 Cambridge Audio Azur 840A v2 Amplifier Exploded Diagram Parts List Drawing ref: AP Part number noi tpi rcseD: fer yrotcaF 1PY12287003-008010E002SCREW M3*8 M/C 1/K TORX RECESS ZINC-PT 1PY12297003-008010E001SCREW M3*8 M/C 1/K TORX RECESS BLACK

29、-PT )A048 sa emas ( detn i ap kca l b l enap poT10-000E900051-47565211YP2 )A048 sa emas ( detn i ap rev l i s l enap poT20-000E900051-47566211YP2 )TFEL ( detn i ap kca l b l enap ed i s 2v A04810-000E530051-47564931YP3 )TFEL ( detn i ap rev l i s l enap ed i s 2v A04810A000E530051-47564931YP3 detn i

30、 ap kca l b l enap ed i s A04810-000E310051-47567211YP4 detn i ap rev l i s l enap ed i s A04810A000E310051-47568211YP4 5PY13928584-015040E301Azur 840A V2 SILVER FRONT PANEL ASSY REV A 5PY13918584-015030E301Azur 840A V2 BLACK FRONT PANEL ASSY REV A 6PY13969484-015002E112Azur-840A V2 FRONT CONTROL PC

31、BA REV B (without display) 7PY13934006-000040E000840E LCD DISPLAY MODULE (MBCF00004B SERIES)(DFSTN) 8PY14109484-015003E091Azur 840A V2 LEFT POWER AMP PCBA REV A 9PY14069484-015002E091Azur 840A V2 RIGHT POWER AMP PCBA REV A 10PY14039484-015001E341Azur-840A V2 AMP INPUT PCB A 11PY13989484-015001E041Az

32、ur-840A V2 ABUS HUB PCBA REV A 12PY14019484-015001E331Azur-840A V2 PRE AMP PCBA AP20760/2 REV A 13PY11193200-074051E001Standby toroid 230V/50Hz 7.5VAC750mA 17VAC*2 13PY11203200-077811E000Standby toroid 115V/50Hz 7.5VAC750mA 17VAC*2 14PY10193200-053044E000Toriod 230V/50Hz 36.5AACx4 5.5A T1-053044C 14

33、PY10203200-053045E000Toriod 115V/50Hz 36.5AACx4 5.5A T1-0853045C 15PY14119805-084001E001Azur 840A V2 REMOTE CONTROL ASSY REV A 16PY11226074-150004E000Azur 840A plastic foot Black 16PY11246074-150004E000A01Azur 840A plastic foot Silver -PY12626600-070166E000 Azur 840A FOOT PAD (AP 16850*) 17PY1404948

34、4-015001E541Azur-840A V2 SPEAKER PCB ASSY REV A ) tes der dna kca l b( t sop gn i dn i b rekaepS103E909400-13328111YP- 18PY14099484-015002E141Azur-840A V2 230V PSU POWER CONTROL PCBA REV A 19PY13999484-015001E311Azur-840A V2 VOLUME CONTROL PCBA REV A AP20760E All spare parts should be ordered from A

35、P Hong Kong office. 9 Main Input Circuit Diagram Cambridge Audio Azur 840A v2 Amplifier COPYRIGHT Audio Partnership PLC Gallery Court Hankey Place LONDON SE1 4BB W4 Blue/White C1 10nF300V X1 Mains Rated ! Safety Critical C2 10nF300V X1 Mains Rated ! Safety Critical C3 470nF275V Met Polypropylene X2

36、! Safety Critical W3 Blue/White L N E CN1 SS-7B-1 IEC Socket ! Safety Critical W2 Brown - To Mains Switch CHASSIS GND S1 Screw Terminal EMC! W1 ES Screen 10 ValueDescriptionQtyComponent IDFactory P/NToleranceAP P/N 10nF 300VX1 Mains Rated2C1, C210% 470nF 275VMet Polypropylene X21C3CMKS474M275Rxxxx20

37、% 3 PinIEC Socket1CN1SS-7B-1 Pressed Eyelet4W1-W4 M4Solder Tag1CP1 M3x10mm MCP/H Black Screw2SC1, SC2. 140mm Long +5mm Strip/Tin each end18 AWG Green/Yellow Insulated Wire1WIRE1+/-1mm Ex Tooth Lock Washer2WS1, WS2 M3Hex Nut 5.5 x 2.4mm2WS3, WS4 Cambridge Audio Azur 840A v2 Mains PCB Assembly BOM - (

38、AP20775/1) CAPACITORS CONNECTORS WIRE TERMINALS MISCELLANEOUS Note: resistors, capacitors and other generic electronic components are not usually stocked by the manufacturer. Please obtain these locally. 11 Cambridge Audio Azur 840A v2 Amplifier PSU Circuit Board - Circuit Diagram TO MAIN TRANSFORME

39、R J2 F4 30VDC 1.1A Polyfuse F2 30VDC 1.1A Polyfuse D1 MBR1100 Schottky Rectifier D2 MBR1100 Schottky Rectifier D3 MBR1100 Schottky Rectifier D4 MBR1100 Schottky Rectifier J3 Yellow J4 Violet J5 Green VI 1 VO 3 GND 2 U1 L7805 Regulator C3 47uF 16V Electrolytic VI 1 VO 3 GND 2 U2 L7815 Regulator C4 10

40、0uF 25V Electrolytic 105 C5 100uF 25V Electrolytic 105 +5V Digital C6 100nF 50V Mono Ceramic DGnd +15V Analogue -15V Analogue Analogue LIVE +9V Relay +9V Relay COPYRIGHT The Audio Partnership Gallery Court Hankey Place LONDON SE1 4BB Tel : +44 (020) 7 940 2200 Fax : +44 (020) 7 940 2233 C8 4700uF 16

41、V Electrolytic 105 J6 Red J7 Orange F3 30VDC 1.1A Polyfuse D5 Rectifier 1N4004 D6 Rectifier 1N4004 D7 Rectifier 1N4004 D8 Rectifier 1N4004 J8 Blue/White 3/64/5 RL3:B ME14F-9-H16S SPST Relay Power amp On/Off 3/64/5 RL4:B ME14F-9-H16S SPST Relay Inrush Supression 1 2RL3:A ME14F-9-H16S SPST Relay 1 2RL

42、4:A ME14F-9-H16S SPST Relay R1 10R 10W WireWound C9 10nF 250V X1/Y1 Mains Rated ! Safety Critical C10 10nF 250V X1/Y1 Mains Rated ! Safety Critical F1 T10AL/6a3 Slow Blow Fuse LVD! 6A3 for 230V 10A for 115V J10 Brown - To Mains Switch D9 1N4004 Rectifier D10 1N4004 Rectifier C1 47nF 63V Met. Polyest

43、er C2 47nF 63V Met. Polyester C7 100nF 50V Mono Ceramic C14 4700uF 16V Electrolytic 105 R2 2.2R 1/2W Carbon Inrush Supression Relay Power Amp On/Off Relay 1 2 3 4 5 6 7 8 9 10 CN2 10 Way Straight Header +15V Analogue -15V Analogue DGnd +5V Digital +9V Relay Analogue Relay Mains Fail Inrush Supressio

44、n Relay Power Amp On/Off Relay C15 100nF 250V Met Polyester C16 100nF 250V Met Polyester Relay VI 2 VO 3 GND 1 U3 L7915 Regulator C17 2200uF 35V Electrolytic C18 2200uF 35V Electrolytic C19 Met. Polyester 47nF 63V C20 Met. Polyester 47nF 63V R3 10k 1/8W Metal Film D11 1N4004 Rectifier R4 3k9 1/8W Me

45、tal Film Mains Fail DGnd D12 1N4004 Rectifier C21 Mono Ceramic 330nF 100V AC Sense 1 AC Sense 2 AC Sense 1 AC Sense 2 Analogue 1 2 CN3 2 Way Straight Header FB1 On 24AWG Wire 1uH Ferrite Analogue 12 ValueDescriptionQtyComponent IDFactory P/NToleranceAP P/N 2.2R1/2W Carbon1R210% 10R10W WireWound1R15%

46、 3k91/8W Metal Film1R41% 10k1/8W Metal Film1R31% 10nF 250VX1/Y1 Mains Rated2C9, C1020% 47nF 63VMet. Polyester4C1, C2, C19, C2010% 100nF 50VMono Ceramic2C6, C710% 100nF 250VMet Polyester2C15, C16CMEB104M250Rxxxx20% 330nF 100VMono Ceramic1C2110% 47uF 16VElectrolytic1C320% 100uF 25VElectrolytic 1052C4,

47、 C520% 2200uF 35VElectrolytic2C17, C1820% 4700uF 16VElectrolytic 1052C8, C1420% 10 WayStraight Header1CN2B10B-XH-A 2 WayStraight Header1CN3B2P-VH 100V 1ASchottky Rectifier4D1-D4MBR1100 400V 1ARectifier8D5-D121N4004 T10AL/6a3Slow Blow Fuse1F1 Fuse Holder Base1F1PTF78 (or equivalent)20mm Pitch Fuse Ho

48、lder Cover1F1PTF78 (or equivalent)20mm Pitch 30VDC 1.1APolyfuse3F2-F4 1uH FerriteOn 24AWG Wire1FB1FB-35608 +5VRegulator1U1L7805 +15VRegulator1U2L7815 -15VRegulator1U3L7915 9V 16ASPST Relay3RL1, RL3, RL4ME14F-9-H16SPY1154 Cambridge Audio Azur 840A v2 PSU PCB Assembly BOM - (AP20785/1) INDUCTORS INTEG

49、RATED CIRCUITS RELAY RESISTORS CAPACITORS CONNECTORS DIODES FUSES Note: resistors, capacitors and other generic components are not usually stocked by the manufacturer. Please obtain these locally. 13 Cambridge Audio Azur 840A v2 Amplifier Front Panel Circuit Board - Micro Controller COPYRIGHT Audio Partnership PLC Gallery Court Hankey Place LONDON SE1 4BB INPUT7 INPUT5 INPUT3 INPUT1 INPUT2 INPUT4 INPUT6 VOLUME1 VOLUME3 VOLUME5 VOLUME7 VOLUME6 VOLUME4 VOLUME2 VOLUME8 VOLUME9 VOLUME10 VOLUME11 VOLUME12 VOLUME13 VOLUME14 SW1 KPT