Cambridge Audio Azur 540A V2.0, Service Manual

Page 1: ..._________ SPECIFICATIONS Power Output 60W into 8 90W into 4 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...

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...

Page 3: ...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 the...

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...

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 LINK1...

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...

Page 7: ...P 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...

Page 8: ...t 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...

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...

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: ...nput 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 2...

Page 13: ...8 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 106...

Page 14: ...ge 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...

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: ...7980 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...

Page 18: ...mm 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 T...

Page 19: ...D 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...

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: ...nsistor 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 PI...

Page 23: ...h 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 MJE...

Page 24: ...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 7...

Page 25: ...L 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...

Page 26: ...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...

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: ...7 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 Ce...

Page 30: ...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 R6...

Page 31: ...p 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 ot...

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 C1...

Page 33: ...37 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...

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: ...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 El...

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...