Cambridge Audio Azur 540A V2, Service Manual

Page 1: ..._________ SPECIFICATIONS Power Output 60W into 8Ω 90W into 4Ω THD unweighted 0 002 1kHz of rated power 0 070 20Hz 20kHz of rated power 0 025 20Hz 20kHz 10w Frequency response 1dB 5Hz 50kHz S N ratio ref 1w 85dB Input impedances 47kohms Power Amp damping factor 100 Max power consumption 650w Min On power consumption 35w no signal Standby power consumption 10w Bass Treble controls Shelving ultimate ...

Page 2: ... Layout Top Side 15 Voltage Select PCB Layout Bottom Side 16 Voltage Select PCB Assembly BOM 17 Mains PCB Schematic 18 Front Panel PCB Schematic 19 Mains Front Panel PCB Layout Top Side 20 Mains Front Panel PCB Layout Bottom Side 21 Mains Front Panel PCB Assembly BOM 22 Amp PCB Schematic Right Channel 23 Amp PCB Schematic Protection 24 Amp PCB Schematic Power Amp 25 Amp PCB Schematic Left Channel ...

Page 3: ...s 5 Any unauthorised design alterations or additions will void the manufacturer s 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 been returned to normal after re assembly Notes on chi...

Page 4: ... ASSY WITH TWO BRASS INSERTS 12 PY1037 8554 015020 701 LARGER SUPPORT REAR ASSY WITH TWO BRASS INSERTS 13 PY1059 8554 015001 302 Azur 540A V2 Silver AMP FRONT PANEL ASSY 13 PY1060 8554 015011 302 Azur 540A V2 Black AMP FRONT PANEL ASSY 14 PY1040 9464 015002 041 Azur 640A 540A V2 PIC CONTROL BOARD ASSY REV A 15 PY1041 9464 015002 171 Azur 640A 540A V2 POWER SWITCH PCB REV A PY1042 9464 015002 191 A...

Page 5: ... LK78 LINK10MM LK74 LINK10MM LK70 LINK10MM LK64 LINK10MM LK66 LINK10MM 15V 15V LK88 LINK10MM LK47 LINK10MM LK44 LINK10MM LK41 LINK15MM LK42 LINK15MM 15V 15V 15V 15V LK13 LINK10MM LK6 LINK15MM LK7 LINK15MM LK12 LINK15MM LK17 LINK15MM LK23 LINK10MM LK26 LINK10MM LK28 LINK10MM LK22 LINK10MM LK29 LINK10MM LK30 LINK10MM LK32 LINK15MM LK31 LINK10MM LK34 LINK15MM C32 1000U 35V EL C33 1000U 35V EL LK50 LI...

Page 6: ... 100p 50V NP0 C61 100p 50V NP0 C65 100p 50V NP0 C66 100p 50V NP0 C62 100p 50V NP0 C58 100p 50V NP0 C54 100p 50V NP0 C50 100p 50V NP0 C46 100p 50V NP0 R75 220R 1 8W R76 220R 1 8W R74 220R 1 8W R77 220R 1 8W 3 CN14 B AV4 8 4 9 1 2 CN14 A AV4 8 4 9 4 5 CN14 C AV4 8 4 9 1 2 CN13 A AV4 8 4 9 4 5 CN13 C AV4 8 4 9 1 2 CN12 A AV4 8 4 9 4 5 CN12 C AV4 8 4 9 1 2 CN15 A AV4 8 4 9 4 5 CN15 C AV4 8 4 9 LK60 LI...

Page 7: ...MP C5 47U NP 16V C11 47U NP 16V C4 47U NP 16V C7 47U NP 16V RCh Out LCh Out C103 47N 63V PE C102 47N 63V PE C14 47N 63V PE C16 47N 63V PE C9 47N 63V PE C10 47N 63V PE C18 10P 50V NPO C23 10P 50V NPO C8 10P 50V NPO C13 10P 50V NPO C19 1N5 63V PE C20 1N5 63V PE C22 680N 63V PE C21 680N 63V PE LK37 LK15MM U4 LK25 LK10MM LK24 LK10MM LK21 LK15MM LK19 LK15MM R33 22R R34 22R LK35 LINK15MM LK20 LK15MM LK2...

Page 8: ...rt PIC DC PIC CLIP PIC Temp Speaker A Relay PIC Standby Relay 1 2 3 4 5 6 7 8 CN6 2 5MM 8W ST HEADER To PIC GENERAL NOTES 1 2 3 4 5 Mains PCB Control Speaker PCB Control PIC Protection signals Speaker Cable Short Circuit Detector LK103 LK10MM LK14 LK10MM LK15 LK10MM 5 6 7 U8 B LM393 LK102 LK10 LINK15MM LK46 LK11 LINK15MM LK45 LK10MM 1 2 3 4 5 CN4 2 5MM 5W ST HEADER DGND PIC VI Short PIC DC PIC CLI...

Page 9: ... 1R R46 2k7 R45 3k3 R48 560R R47 560R R44 5k6 R2 5k6 Q3 BD139 Q2 BD139 Q1 BD140 R4 180R Main GENERAL NOTES 1 2 3 4 5 R11 10R 2W R12 10R 2W RCh HP Out R52 100R R51 No Stuff Main LCh HP Out R49 100R R50 No Stuff Main C97 470U 25V EL C94 470U 25V EL R5 360R R10 360R C2 10N 63V PE C1 10N 63V PE Main LK2 LINK10MM LK1 LINK10MM LK3 LINK10MM LK4 LINK10MM 1 2 CN2 2 5MM 2W ST HEADER R118 1k5 R119 3k R120 1k...

Page 10: ...Cambridge Audio Azur 540A V2 0 Amplifier AP17649 4 Input PCB Board Layout Top Side Super Hi Fidelity Ultra Linear Preamp Stage To enhance viewing please print to A3 10 ...

Page 11: ...Cambridge Audio Azur 540A V2 0 Amplifier AP17649 4 Input PCB Board Layout Bottom Side To enhance viewing please print to A3 11 ...

Page 12: ...Input Schematic Buffers and Switches 220R 0 125W metal film 6 R74 77 111 112 47K 0 125W metal film 12 R73 79 81 83 85 87 89 91 93 95 96 110 10R 2W Carbon 2 R11 12 See Input Schematic Headphone Driver 220R 2W Carbon 2 R57 108 CAPACITORS 10pF 50V NP0 Ceramic 1181 100042 000 8 C8 13 18 23 90 93 99 106 100pF 50V NP0 Ceramic 1181 101042 000 18 C46 48 50 53 54 57 58 61 62 65 66 77 80 83 84 85 1nF 50V Ce...

Page 13: ...08 NE5532N 4155 320052 900 13 U1 5 7 9 10 12 18 L7915CV 1 U2 L7805 1 U3 L7815CV 1 U4 PY539 LM393 4139 300052 600 1 U8 PY476 TC9163AF 4191 630103 000 1 U11 POTS PY1013 20kA Motorised Dual Volume Pot 1062 003511E110 1 VR3 High Torque MN20k Dual Balance Pot 1062 003518E160 1 VR4 High Torque 5kB Dual Linear Pot 1062 002518E130 2 VR1 2 High Torque SWITCH PY045 2P2T Push Switch 2402 020200 010 2 SW1 2 L...

Page 14: ...dge Audio Azur 540A V2 0 Amplifier AP17977 2 Voltage Select Switch PCB Schematic J2 FROM J4 Common SW1 VOLTSELECT RF1002B 115 230V Marking J1 BROWN 230V J3 BLACK 115V To enhance viewing please print to A3 14 ...

Page 15: ...Cambridge Audio Azur 540A V2 0 Amplifier AP17977 2 Voltage Select Switch PCB Layout Top Side To enhance viewing please print to A3 15 ...

Page 16: ...Cambridge Audio Azur 540A V2 0 Amplifier AP17977 2 Voltage Select Switch PCB Layout Bottom Side To enhance viewing please print to A3 16 ...

Page 17: ...17980 1 Value Description Type Qty Component Ident Factory Part Number Notes CONNECTORS RF1002B Voltage Selector 1 SW1 2406 010200 000 Note resistors capacitors and other electronic components are not usually stocked by the manufacturer Please obtain these locally 17 ...

Page 18: ...4mm D1 1N4004 Q3 MPSA14 C3 47N X1 C2 1N X1 Y1 CCDE102MB C1 1N X1 Y1 CCDE102MB 1 2 3 CN1 3 96MM 3W ST HEADER J8 EMC Chassis Connection 3 4 5 RL2 B RELAY 6 7 8 RL2 C RELAY J18 TERMINAL J19 TERMINAL J20 TERMINAL J21 TERMINAL Secondary 1 Secondary 2 640A only Mains Toroid TRANSFORMER Low Power secondary High Power Secondaries Power Amp supplies 1 2 RL2 A RELAY D11 1N4004 R24 1k R25 10k Q4 MPSA14 640A ...

Page 19: ...ND Q2 BC337 R4 10k R23 220R DGND R5 220R SNAP OFF SECTION c R1022R R1122R R9 22R Speaker A Relay VI Short Standby Relay Clip DC 1 2 3 4 5 6 7 CN7 2 5MM 7W 90 HEADER I2C Clock I2C Data I2C Switch Strobe DGnd CA Control Bus IR ABUS IR ABUS Status 1 2 CN10 2 5MM 2W 90 HEADER HP Detect DGnd SNAP OFF SECTION d DGND DGND RC6 17 RC5 SDO 16 RC4 SDI SDA 15 RC3 SCK SCL 14 RC2 CCP1 13 RC1 T1OSI 12 RC0 T1OSO ...

Page 20: ...Cambridge Audio Azur 540A V2 0 Amplifier AP17657 1 Front Panel Mains PCB Layout Top Side To enhance viewing please print to A3 20 ...

Page 21: ...Cambridge Audio Azur 540A V2 0 Amplifier AP17657 1 Front Panel Mains PCB Layout Bottom Side To enhance viewing please print to A3 21 ...

Page 22: ...ansistor 1300 337000 100 2 Q1 2 DIODES PY064 Blue LED 3100 000030 003 7 D2 8 Red LED 3100 000000 003 1 D9 PY319 1N4004 Rectifier Diode 540A 1 640A 2 D1 11 540A fit D11 only INTEGRATED CIRCUITS PY635 PIC16F721 SP Flash PIC micro 4116 720054 200 1 U2 U2 must be programmed with AP18951 1 software file name 640AV2 hex Request from UK Office PY260 BA6218 Motor Drive IC 4162 180002 300 1 U1 PY524 M74HC4...

Page 23: ...th C36 10N 63V PP Q28 MPSA92 2 CW 3 CCW 1 PR2 PRESET 200R 3296W R50 1k 8th C31 10P 50V NP0 C37 100U 25V NP C32 100P 50V NP0 Q23 2SC2240GR Q24 2SC2240GR C50 47U 16V NP C49 1N 50V NPO R49 18R 8th Q27 MJE350 Q19 MPSA42 Q20 MPSA42 Q17 MPSA42 Q18 MPSA42 R40 1k 8th R41 47k 8th R AMP C39 100U 63V EL C28 10U 63V EL C29 47N 63V PE R AMP C40 10U 63V EL C38 47N 63V PE R AMP Q32 2SC2240GR R76 10R 8th C30 100U...

Page 24: ...p Sense DGND R75 47k 8th TH1 ZPP22 100DEG Mounted on Heatsink C64 220P 50V CER C63 220P 50V CER C69 220P 50V CER C70 220P 50V CER C65 220U 16V EL C66 220U 16V EL C68 220U 16V EL C67 220U 16V EL C62 4 7N 50V CER R88 100k 8th R87 120k 8th R89 15k 8th R90 120k 8th C55 10U 25V NP C54 10U 25V NP 1 2 3 4 5 6 7 8 CN2 2 5MM 8W 90 PIN HEADER 1 2 3 4 5 6 7 8 CN8 2 5MM 8W 90 PIN HEADER H1B H1A H15BH15A H9B H...

Page 25: ...AL 20MM F2 F8AL 20MM C24 2200U 50 63V EL 105 540A 640A C27 2200U 50 63V EL 105 540A 640A C42 2200U 50 63V EL 105 540A 640A C41 2200U 50 63V EL 105 540A 640A C25 2200U 50 63V EL 105 540A 640A C26 2200U 50 63V EL 105 540A 640A C43 2200U 50 63V EL 105 540A 640A C44 2200U 50 63V EL 105 540A 640A C3 No Stuff R108 100R R PSU J19 CHASSIS C45 No Stuff LK2 LK7 5MM L PSU WIRE LINK WIRE LINK WIRE LINK WIRE L...

Page 26: ...k 8th C16 10N 63V PP C7 100P 50V NP0 C8 10P 50V NP0 Q5 2SA970GR Q11 2SA970GR Q12 MPSA42 Q10 MPSA42 Q9 MPSA42 C18 47U 16V NP C20 100U 25V NP 2 CW 3 CCW 1 PR1 PRESET 200R 3296W Q6 2SC2240GR Q7 2SC2240GR C22 100U 63V EL C10 100U 63V EL R20 47k 8th L AMP Q13 MPSA42 Q2 MJE350 C23 10U 63V EL C21 47N 63V PE L AMP C11 10U 63V EL C9 47N 63V PE L AMP Q15 2SC2240GR Q14 2SA970GR R36 10R 8th R23 10R 8th C5 47U...

Page 27: ...Cambridge Audio Azur 540A V2 0 Amplifier AP17653 1 Amp PCB Board Layout Top Side To enhance viewing please print to A3 27 ...

Page 28: ...Cambridge Audio Azur 540A V2 0 Amplifier AP17653 1 Amp PCB Board Layout Bottom Side To enhance viewing please print to A3 28 ...

Page 29: ...27 C41 C44 640A only 8 Screened for CA 63V for 640A 640A only 10pF 50V NP0 Ceramic C31 1 1181 100042 000 1nF 50V Ceramic C49 1 10uF 25V Non Polarised Electrolytic C54 C55 2 1105 100024 000 4 7nF 50V Ceramic C62 1 1100 472043 000 220pF 50V Ceramic C63 C64 C69 C70 4 1100 221042 000 220uF 16V Polarised Electrolytic C65 C68 4 1102 221014 000 Diodes 1N5402 Rectifier Diode 640A D1 D4 D12 15 540A D1 4 on...

Page 30: ...3 2 47k 8th R20 R41 R75 R101 R 102 5 270R 8th R21 R39 2 10R 8th R23 R30 R36 R37 R68 R76 540A 6 640A 4 640A has R30 and R68 linked out 540A has R30 and R68 fitted 2k2 8th R24 R26 R29 R34 R3 5 R59 R61 R64 R72 R 73 R116 R119 12 0 22R 3W R27 R65 R78 R113 4 4R7 3W R28 R66 2 47k R48 R114 2 15k 8th R85 R89 R95 R100 4 18k 8th R74 R79 4 15R 0 5W Carbon film R80 R104 2 820R 8th R81 R83 R91 R93 4 Transistors...

Page 31: ...mp PCB Assembly BOM PY537 MPSA42 NPN High Voltage Q9 Q10 Q12 Q13 Q 17 Q20 Q31 Q36 Q38 Q40 Q41 Q43 Q45 17 1300 420000 100 MPSA14 NPN Darlington Q34 Q35 2 1300 140000 100 Note resistors capacitors and other generic electronic components are not usually stocked by the manufacturer Please obtain these locally 31 ...

Page 32: ... U1 D 4011 VDD 5V VSS LOGIC GND R7 220K R38 10K R3 10K 5V LOGIC GND R4 2R2 R5 100R R1 10K LOGIC GND C33 100n 50V X7R LOGIC GND C6 100n 50V X7R A BUS B 1 2 3 4 R40 47R C5 10uF 16V EL C30 100n 50V X7R C13 47p 50V NP0 ABUS GND C18 47p 50V NP0 ABUS GND C9 47p 50V NP0 ABUS GND C11 47p 50V NP0 ABUS GND 24V R50 10K KEYPAD A KEYPAD B CONTROL BUS IN EMITTER IN MODULATED IR CONTROL BUS OUT 1 2 3 4 5 6 7 8 C...

Page 33: ...R37 R12 D4 D3 D6 D5 U3 U4 R7 C10 R17 C8 R18 C12 C7 C15 R27 R26 C29 R22 R23 R44 R43 C21 R46 C18 R19 R32 R21 C22 C9 C11 R25 R24 R45 C28 C23 C33 R4 Q4 Q5 R42 R29 R28 R33 R35 R34 R41 R39 R50 R30 R31 R38 R3 R5 R1 C4 C3 C27 CN9 C32 CN1 Q1 R2 D7 R53 C25 LK1 C2 C1 R15 R14 R10 R9 R36 CN2 C31 C34 U1 R40 C35 C36 LK2 LK3 LK4 LK5 LK6 LK7 LK8 LK9 LK10 LK11 LK12 LK13 LK14 LK15 LK16 LK17 R51 To enhance viewing pl...

Page 34: ...Cambridge Audio Azur 540A V2 0 Amplifier AP17708 4 Abus Module PCB Layout Bottom Side To enhance viewing please print to A3 34 ...

Page 35: ...5 10uF 16V Polarised Electrolytic 1102 100014 000 4 C1 3 5 24 47uF 25V Polarised Electrolytic 1102 470024 000 3 C21 22 29 100U 16V Polarised Electrolytic 1102 101014 000 2 C27 28 220uF 35V Polarised Electrolytic 1102 221034 001 1 C26 10U NP 35V NP Electrolytic 4 C8 12 16 17 PY214 BC337 25 NPN Signal 1300 337000 100 4 Q1 2 3 5 PY219 BC327 25 PNP Signal 1301 327000 100 1 Q4 DIODES PY962 Red LED 2 D1...

Page 36: ...Cambridge Audio Azur 540A Amplifier V2 0 IC Pin Layout Details Input PCB BD140 Q1 Q4 BD139 Q2 Q3 Q5 Q6 BC327 Q7 BC337 Q8 MPSA14 Q9 NE5532 U1 U5 U6 U7 U9 U10 U12 U13 U14 U15 U16 U17 U18 36 ...

Page 37: ...7915 U2 7805 U3 7815 U4 LM393 U8 TC9163AF U11 37 ...

Page 38: ...Power Amp PCB SAP15PY U1 U3 SAP15NY U2 U4 2SC2240GR Q1 Q6 Q7 Q15 Q23 Q24 Q26 Q32 MJE350 Q2 Q27 38 ...

Page 39: ...MPSA92 Q3 Q4 Q8 Q25 Q28 Q29 Q30 Q33 Q39 Q42 2SA970GR Q5 Q11 Q14 Q16 Q21 Q22 MPSA42 Q9 Q10 Q12 Q13 Q17 Q18 Q19 Q20 Q31 Q36 Q37 Q38 Q40 Q41 Q43 Q44 Q45 MPSA14 Q34 Q35 39 ...

Page 40: ...Front Panel Mains PCB MPSA14 Q4 BC337 Q1 Q2 PIC16F72 I SP BA6218 U1 M74HC4094 U3 40 ...

Page 41: ...TSOP1836 U4 A BUS PCB BC337 Q1 Q2 Q3 Q5 BC327 Q4 4011 U1 TSOP1836 U2 41 ...

Page 42: ...TSOP1837 U3 OP4N25 U4 NJM5532 U5 U6 7812 U7 42 ...