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640A Integrated Amplifier
Issue Date: 16th December 2003 (Revised May 2008)
SERVICE MANUAL AP14676/1
SPECIFICATIONS:
Power Output: Input Impedance: Loudspeaker Impedance: Line: Phono (using optional phono stage): Total Harmonic Distortion (into 8 Ohms 80% rated power):
65 watts into 8 Ohms 100 watts into 4 Ohms 47k Ohms 4 to 8 Ohms 380mV 1.75mV 0.005% THD (No weighting) @ 1kHz 0.003% THD (A weighted) @ 1kHz 0.01% THD (No weighting) @ 20Hz - 20kHz 5Hz to 50kHz +/- 1dB +/- 10dB @100Hz +/- 10dB @10kHz 92dB 40V/uS 615 watts 430 x 320 x 100 7 kg/15.4 lbs
Frequency Response: Bass: Treble: Signal to Noise Ratio (No weighting): Slew rate (into 8 ohms): Max. Power Consumption: Dimensions (mm): Weight:
Gallery Court Hankey Place London SE1 4BB UK Tel: +44 (0)20 7940 2200 Fax: +44 (0)20 7940 2233
640A SERVICE MANUAL
TABLE OF CONTENTS
Safety Precautions & Important Notes Amplifier Bias Set-up Main Assembly BOM (Silver Unit) Input & Tone PCB Schematic (Tone Control) Revised: Input & Tone PCB Schematic (Input Select) Input & Tone PCB Layout (Top Side) Input & Tone PCB Layout (Bottom Side) Input & Tone PCB BOM Front Panel Schematics Front Panel PCB Layout (Top Side) Front Panel PCB Layout (Bottom Side) Front Panel PCB BOM Power Amp Schematic (Power Supply) Power Amp Schematic (Protection) Power Amp Schematic (Left Channel) Power Amp Schematic (Right Channel) Power Amp PCB Layout (Top Side) Power Amp PCB Layout (Bottom Side) Power Amp PCB BOM Speaker Output Schematic Speaker Output PCB Layout (Top Side) Speaker Output PCB Layout (Bottom Side) Speaker Output PCB BOM Mains Input Schematic Mains Input PCB Layout (Top Side) Mains Input PCB Layout (Bottom Side) Mains Input PCB BOM IC Pin Layout Details Silver / Black Difference BOM Amended Input Circuit Schematic (Jan 2004) Amended Input Circuit Schematic (March 2005) 3 4 57 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 25 26 27 28 29 30 31 32 33 34 38 39 40 41
SAFETY PRECAUTIONS & IMPORTANT NOTES
1.Check that the rear of the product indicates 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 electric 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 (73/23/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 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 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.
© 2005 Audio Partnership PLC. All rights reserved. Cambridge 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 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 640A Amplifier Bias Setup
To set the bias on the 640A Amplifier: Measure the voltage across R22 and R100 (Left channel) individually; they should be adjusted using Preset R116 so that the voltage measured on each resistor is greater than 13mV. This procedure should then be repeated for the Right channel by measuring the voltage across R52 and R69 whilst adjusting Preset R68 so that the voltage measured on each resistor is greater than 13mV.
4
Cambridge Azur 640A Amplifier (Main Assembly BOM Silver Unit)
AP PART No. DRAWING NO DESCRIPTION QTY COMMENTS
AP13133/6
NEW CAMBRIDGE AMP PACKED UK VERSION AP13074/1 AP13075/1 AP136131/1 POLY ENDCAP PACKAGING CARTON PACKAGING W/HANDLE CAMBRIDGE AUDIO NON-WOVEN BLUE BAG FOR REMOTE CAMBRIDGE NEW STYLE REMOTE COMPLETE AAA ALKALINE BATTERIES PY540 AP13969/1 AP13933/2 AMPLIFICATION INSTRUCTION MANUAL CARTON LABEL (MODEL NO.) UK Silver SERIAL NUMBER LABEL, BLANK (6.5X35.5mm) ISO 9002 LABEL AP10087/2 "MADE UNDER LICENCE IN PRC" STICKER POLYBAG 173X260X4C mm AP13611/1 CAMBRIDGE AUDIO NON-WOVEN BLUE BAG 120mm HEIGHT 1830mm AC IEC POWER CORD SET BS STANDARD FUSED 3 AMP RED TAPE SEAL FOR CAMBRIDGE CARTON NEW CAMBRIDGE AMP UK VERSION ASSEMBLED & TESTED FRONT PANEL ASSEMBLY PY592 PY590 PY581 AP12740/2 AP12935/1 AP12746/2 AP12931/1 AP10209/3 AP10224/1 CAMBRIDGE SELECTOR KNOB MK3 CAMBRIDGE KNOB INSERT MK2 CAMBRIDGE NEW RANGE AMP VOLUME KNOB CAMBRIDGE NEW RANGE AMP FRONT PANEL (PUNCHED AND PRINTED) CAMBRIDGE NEW RANGE AMP IR LENS CAMBRIDGE NEW RANGE AMP SUB PLATE CAMBRIDGE NEW RANGE AMP LIGHTGUIDE M3 X 6 POZI PAN STP SCREW M3 X 6 C/S POZI MACHINE SCREW AP11782/1 AP13585/1 OPUS CONTROL BOX BUTTON CAMBRIDGE NEW RANGE AMP 9mm TAC SWITCH CUSHION CAMBRIDGE NEW RANGE AMP 7mm TAC SWITCH BUTTON CAMBRIDGE NEW RANGE AMP 7mm TAC SWITCH CUSHION CAMBRIDGE NEW RANGE AMP 7mm PUSH SWITCH BUTTON CONTROL PCB ASSEMBLY (FRONT PANEL SWITCH PCB) M3 X 6 POZI PAN MACHINE SCREW A600 FRONT PANEL PCB CABLE
1 2 1 1 1 3 1 1 3 1 1 1 1 1 1 1 FOR BOX 1 X REAR PANEL, 1 X BOX, 1 X SHIPPING CARTON AFFIXED TO REAR PANEL ABOVE IEC SOCKET AFFIXED TO REAR PANEL BELOW IEC SOCKET FOR INSTRUCTION MANUALOWNERS CERTIFICATE AND REMOTE BATTERIES PACK AMP UNIT INSIDE MUST BE BS APPROVED PRINTED TO ARTWORK AP............ PACK REMOTE CONTROL INSIDE, MOUNTED INTO POLY ENDCAP PACKING IN REBATE PROVIDED FOR REMOTE. PLACE IN INSTRUCTION MANUAL POLYBAG
3 3 1 1 1 1 5 5 8 1 1 SCREENED WITH ARTWORK AP13679/2 GLUED IN PLACE ON THE FRONT PANEL FASTENEND IN PLACE INBETWEEN THE LEDGES ON THE FRONT PANEL FASTEN TO SUBPLATE AFFIXES LIGHTGUIDES TO SUBLATE FASTEN THE SUB PLATE TO THE FRONT PANEL POSITION IN PLACE ON THE FRONT PANEL POSITION ON THE SUBPLATE OVER THE POWER BUTTON CUT AND AFFIX USING ADHESIVE PROVIDED ON THE CUSHION. POSITION IN PLACE ON THE FRONT PANEL POSITION ON THE SUBPLATE OVER THE POWER BUTTON CUT AND AFFIX USING ADHESIVE PROVIDED ON THE CUSHION. POSITION IN PLACE ON THE FRONT PANEL INSERT INTO SELECTOR KNOBS
AP12925/1 AP12934/1
6 6
AP12926/2
2
10 1
AP13388/3
USED FOR FIXING THE CONTROL PCB'S TO THE SUBPLATE STANDOFF'S CONNECTS TO FRONT PANEL SWITCH PCB AND RUNS ALONG FRONT PANEL CONNECTING THE SWITCH PCB TO THE POWER SWITCH AND THE IR PCBS
5
AP PART No.
DRAWING NO AP13453/2
DESCRIPTION A600 INPUT PCB TO FRONT PANEL SWITCH PCB CABLE TIE 2.5mm X 100mm
QTY 1 2 1 1
COMMENTS ATTACH FRONT PANEL PCB TO INPUT PCB AS PER DRAWING ATTACH CABLE LOOM TO SUB PANEL ATTACH VOLUME POT MOTOR TO FRONT PANEL SWITCH PCB ATTACH FRONT PANEL PCB TO AMP PCB AS PER DRAWING
AP13391/2 AP13394/2
A600 VOLUME MOTOR CABLE A600 AMP PCB TO FRONT PANEL CONTROL PCB CABLE BOTTOM PANEL ASSEMBLY
AP12734/1 PY541 PY544 AP12652/2 AP12883/3
CAMBRIDGE NEW RANGE AMP BOTTOM PANEL CAMBRIDGE NEW RANGE FOOT MOULDING CAMBRIDGE NEW RANGE FOOT PAD M3 X 6 PLASTITE POZI PAN 12.7mm PLASTIC PCB STANDOFF M3 X 6 POZI PAN TAPTITE SCREW M4 X 12 POZI PAN MACHINE BOLT M4 NUT STANDARD M4 LOCK WASHER M6 X 60 POZI PAN MACHINE BOLT
1 4 4 4 9 12 2 2 2 1 1 2 1 1 1 1 1 1 10 4 TO AFFIX BOTTOM PANEL TO SIDE, FRONT AND REAR PANELS FIX CORNERS OF BOTTOM PANEL TO PLASTIC INSERTS TO FIT EITHER SIDE OF TRANSFORMER TO FIT UNDER BOTTOM PLATE ON M6 BOLT PLACE ABOVE TRANSFORMER ON M6 BOLT PLACE ON TOP OF TRANSFORMER USED TO FIX ABOVE BOLT FIXES IN THE CORRECT POSITION ONTO THE PLASTIC PCB STANDOFFS POSITION IN PLACE ON BOTTOM PANEL AFFIX ON FOOT USING ADHESIVE SURFACE AFFIX FEET TO BOTTOM PANEL PUSH SNAP FIT ON BOTTOM PANEL TO AFFIX SUPPORT BRACKETS (POWER AMP ASSEMBLY) TO BOTTOM PANEL FIX THROUGH EARTHING POINT HOLES ON BOTTOM PANEL USED TO FIX ABOVE BOLTS FOR EARTH BOLTS USED TO FIX MAIN TRANSFORMER IN PLACE THROUGH THE BOTTOM PANEL
AP12629/5
230V 194VA TOROID TRANSFORMER NEOPRENE TRANSFORMER INSULATION WASHERS TRANSFORMER METAL BOTTOM PLATE M6 LOCK WASHER TRANSFORMER METAL TOP PLATE M6 NUT STANDARD INPUT PCB ASSEMBLY
AP12715/4
BARE INPUT PCB M2.6 X 6 POZI PAN MACHINE SCREW M2.6 X 10 POZI PAN PLASTITE
SIDE PANEL ASSEMBLY AP12726/1 AP12729/1 AP12730/1 CAMBRIDGE AUDIO NEW RANGE PRESSED SIDE PANEL (3 RIDGE) CAMBRIDGE AUDIO NEW RANGE FRONT PLASTIC SUPPORT (3 RIDGE) CAMBRIDGE AUDIO NEW RANGE REAR PLASTIC SUPPORT (3 RIDGE) M2.6 X 10 C/S POZI PLASTITE
2 2 2 2 8 POSITION IN PLACE ON PLASTIC FRONT INSERTS POSITION AT FRONT WITHIN SIDE PANELS POSITON AT REAR WITHIN SIDE PANELS TO AFFIX SIDE PANELS TO PLASTIC INSERTS
A600 REAR PANEL ASSEMBLY AP12919/2 CAMBRIDGE AUDIO NEW RANGE AMP REAR PANEL PRINTED M3 X 10 POZI PAN PLASTITE M3 X 8 POZI PAN PLASTITE
1 1 SCREENED WITH ARTWORK AP13665/2 THEN POSITION ON REAR PLASTIC SUPPORTS TO AFFIX REAR PANEL TO REAR PLASTIC INSERTS TO FIX SPEAKER TERMINAL PCB AND ALSO FIX PHONO SOCKETS ON THE INPUT BOARD TO THE REAR PANEL FIXES THE IEC SOCKET MOUNTED ON THE POWER BOARD TO THE REAR PANEL PHONO GND SCREW ON REAR PANEL
4 9
M4 X 8 POZI PAN TAPTITE M3X12 MACHINE SCREW WITH PLASTIC KNOB AND EXTERNAL TOOTH ZINC WASHER
2 1
6
AP PART No.
DRAWING NO
DESCRIPTION
QTY
COMMENTS
AP13389/2 AP13393/2 AP13396/2 AP13392/2
A600 AMP PCB TO INPUT PCB POWER CABLE A600 AMP PCB TO MAINS PCB CABLE A600 INPUT PCB TO AMP PCB SIGNAL CABLE A600 AMP PCB TO SPEAKER PCB CABLE SELF ADHESIVE CABLE TIE FIXING PAD 19mm X 19mm
1 1 1 1 3
FIT AS PER DRAWING - JST CONNECTORS FIT AS PER DRAWING - JST CONNECTORS FIT AS PER DRAWING - JST CONNECTORS FIT AS PER DRAWING - JST CONNECTORS 2X SIDE PANEL, 1X REAR PANEL TO ATTACH AP13395/1 LOOM TO SIDE OF CHASSIS (PLEASE FOLLOW EXAMPLE ON MANUFACTURING SAMPLE UNIT OR USE AS NECESSARY) FIX TO THE CORRECT SURFACES FOR LID FIX TO THE CORRECT SURFACES FOR LID POSITIONON TOP OF THE PRODUCT TOP PANEL SCREWS
CABLE TIE 2.5mm X 100mm
10
AP13340/1 AP13342/1 PY542 PY516 AP12733/2
A600 LIDDING TAPE FOR FRONT AND REAR PANELS A600 LIDDING TAPE FOR SIDE PANELS CAMBRIDGE AUDIO NEW RANGE TOP PANEL WITH VENTS M2.6 x 8 M/C Torx Recessed Plated
2 2 1 8
7
Cambridge Audio Azur 640A Integrated Amplifier
C29 VR2:A
3 B20K LINEAR 1 10u 16V NP
SW1:B
+15V SW-DPDT DEFEAT +15V
R52
150k
C32
100u 25V
2
C27 C1
330p poly
R3
4k7
R2
4k7
C9
5p
47n poly
C33
100u 25V
20K MOTORISED DUAL POT
R11
8k2
R1
22k
R4
8k2 +15V
C17
47n poly
6 7 5
C28
10u 16V NP
1
3 2
6
8
R CH IN
U2:B
3
VR1:A
U5:A
1
VR4:B
2 -15V
4
8
B20K LINEAR 3
2
VR3:A
1 3 2
NE5532
R59
150k
4
NE5532 5
U2:A
1 NE5532
C24
47n poly -15V
R CH OUT
R12
10k
MN20K BALANCE
R13
10k
C6
150n poly
C16
47n poly
4
C18
-15V 22p
CN3 SW1:A
SW-DPDT DEFEAT 1 2 3 4 5 6 H6 2.54mm TO POWER AMP
VR2:B
6 B20K LINEAR 4
C31
10u 16V NP
5
R43
4k7 L CH IN
C10
330p poly
R42
4k7
R54
150k
C15 R45
8k2
R20
22k
R44
8k2
5p 6
U4:B
7 +15V 5 NE5532
C30
10u 16V NP
6
VR1:B
VR3:B
B20K LINEAR 6
C20
47n poly
5
8
4 3
R60
150k
1
5
VR4:A U5:B
U4:A
1 NE5532
R46
10k
4
C11
150n poly
2
20K MOTORISED DUAL POT 2
5 7 6
C19
47n poly -15V
4
R47
10k
3
MN20K BALANCE
C21
22p RSW1 RSW2 R TERMINAL SW-DPDT TAPE SPEAKER SWITCHING
NE5532
CN2
HEADPHONE 8 7
R61 J5
TERMINAL 220R 3W C 3
J3
SW2:A J1
TERMINAL L CH OUT
R63 J6
TERMINAL 220R 3W C
2
L LSW2 LSW1 GND HEADPHONE JACK TERMINAL SW-DPDT TAPE
R64
470R 1W C
R62
470R 1W C
4 5
J4
SW2:B J2
TERMINAL
J7
TERMINAL
1
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AP12714/5 Input & Tone PCB Schematic (Tone Control)
8
Cambridge Audio Azur 640A Integrated Amplifier
QUAD PHONO
QUAD PHONO
QUAD PHONO
QUAD PHONO
QUAD PHONO
QUAD PHONO
QUAD PHONO
QUAD PHONO
QUAD PHONO
QUAD PHONO
QUAD PHONO
QUAD PHONO
QUAD PHONO
QUAD PHONO
QUAD PHONO
L
CN4:B
DUAL PHONO 3
QUAD PHONO
C26 CN10:A
100n Pre Only
CN13:D
CN12:D
CN11:D
CN10:D
CN10:C
CN11:C
CN12:C
CN13:C
CN11:A
CN12:A
CN13:A
CN13:B
CN12:B
CN11:B
CN10:B
J8
CHASSIS
R53
100R Pre Only
R
1
1
4
1
4
1
4
1
4
CN4:A
2 PHONO/AUX IN R 3 PHONO/AUX IN L DUAL PHONO 5 TUNER IN R 2 5 2 TAPE OUT2 R 5 TAPE OUT1 R 2 TAPE MONR 5 DVD IN R PREOUT R CD IN R 2 TAPE MON L 6 TAPE OUT1 L 3 TAPE OUT2 L 6 3 6 3 DVD IN L TUNER IN L PREOUT L 6 CD IN L
U6:B
L CH OUT 5 7 6 NE5532 +15V
R9
56R
R28 R27
220K 220K
R23
220K
R21
220K
CN8
1 2 3 4 5 6 HEADER6 PHONO I/O
CN7
6 5 4 3 2 1 HEADER6 PHONO PSU
+30V
R32 R33
220K 220K
R40
220K
AV IN R
AV IN L
R41
220K
C2
47n poly 1
R22
220K
R50
220K
8 3 2
U6:A
R CH OUT
R8
56R
NE5532 4
C3
47n poly
LK1
LK2 R6
220K
-15V
R17
+12V
R51
R30 R31
R29
R26
R25 R24
220K
C4
47n poly
C5
47n poly 1 2 3 4 5 6 7 8 9 10 11 12 13 14
-12V
R34
R35
R36 R37
R38
R39
R49
100R
100R
100R
100R
100R
100R
100R 28 27 26 25 24 23 22 21 20 19 18 17 16 15
U1
VDD R1 R2 R3 R4 R-COM1 R5 R6 R-COM2 R7 R8 R-COM3 DATA CK VEE L1 L2 L3 L4 L-COM1 L5 L6 L-COM2 L7 L8 L-COM3 ST VSS
100R
100R
100R
100R
100R
100R
100R
C25
5 10u 16V NP 6
U3:B
7
R CH IN
R16
100K
R15
100K
NE5532
+45V +30V
NJU7313
R14
10k
R10
10k
C13 R55
680R +15V st +15V
C7
47n poly
22p
R48
+12V 100R
CN1
clk dat HEADPHONE 1 2 3 4 H4 2.54mm
C14
3 10u 16V NP 2
8
CN22
1 2 3 4 H4 2.54mm
D1
12V Zener 400mW
C22
10u 25V
U3:A
1 L CH IN NE5532
R19
100K
R18
4 100K
C8
-15V 47n poly
C23 D2 R56
100R 12V Zener 400mW -12V 10u 25V
R7
10k
R5
10k
C12
-15V 22p
© COPYRIGHT
(Production change in 2003 - if R48/R56 fail, please refer to Service Bulletin: TNBC-0006)
The Audio Partnership
Gallery Court Hankey Place LONDON SE1 4BB Tel : +44 (0)171 940 2200 Fax : +44 (0)171 940 2233
To enhance viewing, please print to A3
9
AP12714/6 Input & Tone PCB Schematic (Input Select)
Cambridge Audio Azur 640A Integrated Amplifier
To enhance viewing, please print to A3
AP12714/5 Input & Tone PCB Layout (Top Side)
10
Cambridge Audio Azur 640A Integrated Amplifier
To enhance viewing, please print to A3
AP12714/5 Input & Tone PCB Layout (Bottom Side)
11
Cambridge Azur Input and Tone PCB BOM
AP PART No. DRAWING NO AP12715/5 BARE INPUT PCB 220R 3W CARBON FILM RESISTOR 470R 1W CARBON FILM RESISTOR 680R 1W CARBON FILM RESISTOR 56R 0.25W METAL FILM RESISTOR 100R 0.25W METAL FILM RESISTOR DESCRIPTION QTY DESIGNATOR
AP131336
COMMENTS
1 2 2 1 2 14 R61, R63 R62, R64 R55 R8, R9 R24, R25, R26, R29, R30, R31, R34, R35, R36, R37, R38, R39, R49, R51 R2, R3, R42, R43 R4, R11, R44, R45 R5, R7, R10, R12, R13, R14, R46, R47 R1, R20 R15, R16, R18, R19 R52, R54, R59, R60 R6, R17, R21, R22, R23, R27, R28, R32, R33, R40, R41, R50 C9, C15 C12, C13, C18, C21 C1, C10 C2, C3, C4, C5, C7, C8, C16, C17, C19, C20, C24, C27 C6, C11 C14, C25, C28, C29, C30, C31 C32, C33 U1 U2, U3, U4, U5, U6 CN1, CN22 CN3 CN2 CN4 CN10, CN11, CN12, CN13 CN7, CN8 SW1, SW2 VR1 VR2, VR3 VR4 LK1, LK2, ALL BLANK LINK POSITIONS USED TO FIT OPTIONAL PHONO STAGE USED TO FIT OPTIONAL PHONO STAGE USED TO FIT OPTIONAL PHONO STAGE CONNECT AS PER DRAWING TO INPUT PCB BEFORE FITTING INPUT PCB TO CHASSIS EMBOSSED WITH ARTWORK AP10018/1 AS PER EXISTING A500 INPUT PCB
4k7 0.25W METAL FILM RESISTOR 8k2 0.25W METAL FILM RESISTOR 10k 0.25W METAL FILM RESISTOR 22k 0.25W METAL FILM RESISTOR 100k 0.25W METAL FILM RESISTOR 150k 0.25W METAL FILM RESISTOR 220k 0.25W METAL FILM RESISTOR
4 4 8 2 4 4 12
5p CERAMIC 50/100V 5mm PITCH CAPACITOR 22p CERAMIC 50/100V 5mm PITCH CAPACITOR 330p POLY 50/100V 5mm PITCH CAPACITOR 47n POLY 50/100V 5mm PITCH CAPACITOR
4 4 2 12
150n POLY 50/100V 5mm PITCH CAPACITOR 10u 35V NON POLAR ELECTROLYTIC CAPACITOR 100u 25V ELECTROLYTIC CAPACITOR PY487 PY108 NJU 7313 AUDIO SWITCH IC NE5532 OP AMP 4 WAY JST CONNECTOR 2.54mm PITCH 6 WAY JST CONNECTOR 2.54mm PITCH ZUANBAO CK-6.35-08A (SILVER BEZEL) HEADPHONE JACK ZUANBAO AV2-8.4-9 GOLD DUAL PHONO SOCKET ZUANBAO AV4-8.4-9 GOLD QUAD PHONO SOCKET 6 WAY PIN HEADER 2.54mm PITCH 13mm LONG DPDT WEALTH PBS-22HO1-T18-SL SWITCH PY004 PY535 PY005 20k MOTORISED DUAL LOG POT RM16 WITH 22mm LEGS B20k LINEAR POT MN20k BALANCE POT LINK WIRE 24SWG 20mm LONG M3 X 14 POZI PAN MACHINE SCREW BLACK M3 LOCKWASHER M3 NUT BLACK AP13395/2 640A INPUT PCB TO SPEAKER PCB LOOM
2 6 2 1 5 3 1 1 1 4 2 2 1 2 1 30 1 1 2 1
AP10001/2
CAMBRIDGE AUDIO SCREENING CAN
1
12
Cambridge Azur 640A Integrated Amplifier
+5V +5V
+5V
C24 LK9
100n
CRS1
LINK
U7
VSS
R35
10k
D1
1N4148
R30
33k
QS QS Q7
10 9 11 12 13 14 7 6 5 4
DGND
R33
820R DGND1
D2
CHANNEL LED
D3
CHANNEL LED
D4
CHANNEL LED
D5
CHANNEL LED
D6
CHANNEL LED
8
R3
820R
LK5
LINK
DGND1 HEADPHONE FREQ=4MHz
Q6 Q5 Q4 OE STB D
VDD
D7
CHANNEL LED
C22
100n +5V
strobe clock data
15 1 3 2
Q3 Q2 Q1 Q0
CLK
C23
100n DGND1
U5
1 2 3 4 5 6 7 8 9 10 11 12 13 14
RTCC VDD N/C VSS N/C RA0 RA1 RA2 RA3 RB0 RB1 RB2 RB3 RB4 MCLR/VPP CKIN CKOUT RC7 RC6 RC5 RC4 RC3 RC2 RC1 RC0 RB7 RB6 RB5
74HC4094 DGND1 28 27 26 25 24 23 22 21 20 19 18 17 16 15
16
vol up vol down
R1
220R
SNAP OFF SECTION (c)
D8
+5V Red LED protection lead mounted
CN1
1 2 3 4 H4 2.54mm 90 REMOTE IN
D9
Standby Blue flat top LED
clock data strobe
R2
10k 1 2 3 4 5 6 7 8 9 DGND1
HEADPHONE
CN6
CN5
1 2 3 4 5 6 7 8 9 CONN-H9 1 2 3
PIC16C57 +5V
SW3 STANDBY
R28
10k
R29
10k
R27
10k speaker relay clip dc standby relay overcurrent/short temp
+5V
CN2
8 7 6 5 4 3 2 1 H8 2.54mm 90
OPT GND +5V
R7
820R
H9 2.54mm 90
C1
100n
U9 TSOP18 IR RECEI R5
10k
Q2
BC337
R6
820R
R4
10k
SNAP OFF SECTION (d) +5V
DGND1
DGND DGND1
LK3
LINK
U6
FIN GND1 RIN NC GND2 VCC OUT2 COM
C3 SW5
TUNER
SW4
CD
C4
100n
47u 16V
LK8
LINK
OUT1
1 2 3 4 5 6 7 8 9
vol up vol down
CN7 C21
100n 2 1 H2 2.54mm 90 MOTOR
BA6218
SW6
AV
SW7 LK1
PHONO/AUX DGND1 LINK
SW9
TAPE MON
SW10
DVD DGND
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AP12711/9 Front Panel Schematics
13
Cambridge Azur 640A Integrated Amplifier
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AP12711/9 Front Panel PCB Layout (Top Side)
14
Cambridge Azur 640A Integrated Amplifier
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AP12711/9 Front Panel PCB Layout (Bottom Side)
15
Cambridge Azur Front Panel PCB BOM
AP PART No. DRAWING NO DESCRIPTION QTY DESIGNATOR COMMENTS
AP12712/8b
CONTROL PCB ASSEMBLY (FRONT PANEL) CONTROL PCB SNAP OFF (FRONT PANEL) 220R 0.25W 1% METAL FILM RESISTOR 820R 0.25W 1% METAL FILM RESISTOR 10k 0.25W 1% METAL FILM RESISTOR 33k 0.25W 1% METAL FILM RESISTOR 100n CERAMIC 50/100V 5mm PITCH CAPACITOR 47u 16V ELECTROLYTIC CAPACITOR 4MHz CRYSTAL RESONATOR WITH BUILT IN CAPS (3 TERMINAL) PIC16C57C -04P MICROPROCESSOR IC 28 PIN 0.6" TURNED PIN SOCKET FOR ABOVE PIC
1 2 2 6 1 5 1 1 1 1 1 1 1 1 6 1
R1 R3,R6,R7 R33 R2, R4,R5, R27, R28, R29, R35 R30 C4, C21, C22, C23, C24 C3 CRS1 U5 (U5) U6 U7 Q2 D1 D2, D3, D4, D5, D6, D7 D8 TO BE FITTED TO CABLE AS PER DRAWING AP13388/3 AND THEN GLUED INTO THE 'PROTECTION' LIGHT GUIDE FITTED TO THE SUB PANEL TO BE PROGRAMMED WITH AP13424/1 HEX CODE
PY597
PY260 PY524 PY214 PY064
BA6218 MOTOR DRIVE IC 74HC4094 SHIFT REGISTER IC BC337 NPN TRANSISTOR 1N4148 SIGNAL DIODE FLAT TOP BLUE LEDS (AS PER CURRENT CAMBRIDGE) 3mm STANDARD DIFFUSED RED LED
2 WAY JST CONNECTOR 2.54mm PITCH 90 DEGREE MOUNTED 4 WAY JST CONNECTOR 2.54mm PITCH 90 DEGREE MOUNTED 8 WAY JST CONNECTOR 2.54mm PITCH 90 DEGREE MOUNTED 9 WAY JST CONNECTOR 2.54mm PITCH 90 DEGREE MOUNTED TACTILE SWITCH LINK WIRE 24SWG 20mm LONG
1 1 1 1 1 7
CN7 CN1 CN2 CN6 SW3 LK1, LK3, LK5, LK8, LK9, X, X,
AP12712/8c
CONTROL PCB ASSEMBLY (POWER SWITCH) CONTROL PCB SNAPOFF (POWER SWITCH)
1
TACTILE SWITCH PY064 FLAT TOP BLUE LEDS (AS PER CURRENT CAMBRIDGE) CONTROL PCB ASSEMBLY (I/R RECEIVER) CONTROL PCB SNAPOFF (IR RECEIVER) TSOP18 IR RECEIVER MODULE (VISHAY) 100n CERAMIC 50/100V 5mm PITCH CAPACITOR M3 X 6 POZI PAN TAPTITE SCREW 1mm NYLON WASHER
6 1
SW4, SW5, SW6, SW7, SW9, SW10 D9
FASTENEND IN PLACE TO STANDOFFS SUPPLIED ON SUB PLATE. AS PER CAMBRIDGE D500SE
AP12712/8d PD092
1 1 1 1 1 U9 C1
FIXED INTO PEENED HOLE ON SUBPLATE TO BE MOUNTED ON BACK OF PCB FOR FIXING IR SNAP OFF PCB TO SUB PANEL USED AS A SPACER FOR AP12711/5d
16
Cambridge Azur 640A Integrated Amplifier
+45V
J1 D17
WIRE LINK
C31
100n
D18
1N5402
RED
J19
YELLOW
J21
YELLOW
1N5402
R97 C32
47n poly 47R
J4
CHASSIS
D20
1N5402
D19
1N5402
CN4 C29
2200uF
C23
2200uF
C26
2200uF
C25
2200uF 1 2 H2 2.54mm PHONO PSU
J2
YELLOW
C20
47n poly
J3
ORANGE
J16 C30
2200uF
C63
2200uF
C21
2200uF
C62
2200uF
J20
-45V
LK18
LINK
+5V
J13
1 TERMINAL green
VI
U8 7805
VO
GND
U9
7815 3 1
VI
GND
VO
3
+15V
D13
1N4002
D14
1N4002
C53
470u 35V
C55
47n poly
C56
47n poly
C59
47u 16V
C57
47n poly
C60 C67
100u 16V 47n poly 1 2 3
CN6
2
J15
TERMINAL blue
2
H3 2.54mm
1
D16
1N4002
D15
1N4002
C54
100u 35V
digital
C58
47n poly
J17
TERMINAL
C61 C68
47n poly
VO
J14
TERMINAL purple
J18
TERMINAL 2
VI
GND
100u 16V -15V
3
U10
7915
To enhance viewing, please print to A3
AP12707/6 Power Amp Schematic (Power Supply)
17
Cambridge Azur 640A Integrated Amplifier
LK26
+5V +5V-1 LINK PIC TEMP PIC OVERCURRENT/SHORT digital PIC STANDBY PIC DC PIC CLIP PIC SPEAKER 7 1 2 3 4 5 6 7 8 H8 2.54mm
CN7 CN5
1 2 3 4 H4 2.54mm +5V
Speaker short circuit tester Senses a DC resistance of 2 ohms or less
+5V-1
R87
4k7 8th
R88
11k 8th
R94
4k7 OpenC 5
LK20LINK
PIC SPEAKER
C52
100n
8
U7:B
+15V
LK13
PIC TEMP LINK
R92
digital 1k 8th For 1mA
R93
10k 8th 3 2
R91
4k7 8th OpenC
LK11
LINK
6 LM393
U7:A
LM393 1
D12
1N4148
570mV +-1%
R86
To be mounted on heatsink 1k 1k / (1k + 11k) with 570mV transistor voltage gives 92deg C cutout
CN8
3 2 1 H3 2.54mm
LK17
PIC STANDBY LINK +15V
D31 R8
+5V-1 10k 8th 1N4002
R89
100R 8th
R90
10R 8th
Q20
MJE340
digital ROCLIP
D21
1N4148
R9 D30
10k 8th
Q2
BC327 digital
LK12
LINK
R6
Q4
BC337 PIC DC
D22
LOCLIP digital 1N4148
4k7 10V Zener 400mW
g1
R7
4k7 8th digital
Q3
BC337
R10
10k 8th
C5
ROCLIP 5p
D23
1N4148
D29
10V Zener 400mW
R13
LOCLIP
D24 C4
100n ROCLIP 1N4148 1N4148
R1
+5V-1 10k 8th
digital
LK16
+5V +5V-1 LINK
LK4
LINK
1M 8th
D25
R2
10k 8th
Q1
BC327
7
R104
RICLIP
5
3 6 2
R105
RFCLIP 220k 8th
R11
ROCLIP 100R LOCLIP
D26
1N4148 ROCLIP 1N4148
PIC CLIP
220k 8th
R5 D27
4k7
Q5
BC337
4
R4
4k7 8th
Q6
BC337
+45V
U1 C6
5p
R3
10k 8th
C1
1u 16V
R12
1M 8th
NE5534
4 1 8
R48
18k
C27
4.7n
C3
100n
Q21
digital digital MPSA92/93
D28
LOCLIP 1N4148
LK2
LINK
LK3
LINK
C34
5p
R49 R45
47k 47k
-15V
R60 LK19
+15V LINK 1M 8th +45V2
R106 C36
RE1 100n 100k
Q19
MPSA42/43 +45V3
Q22 R114
100k MPSA42/43
LK14
LINK
7
R24
2k2
C15
220p
R25
470R 8th LE1
R111
2k2
C72
220p
R113
470R 8th
5
R63
LICLIP
R109
6
3 2
R62
LFCLIP 220k 8th
R95
LOCLIP 100R RO
820R 8th
C70
220u 16V
R117
820R 8th
C74
220u 16V
220k 8th
Q35
MPSA42/43 LO
Q36
MPSA42/43
R47
18k
U6
NE5534
4 1 8
R46
4k7 8th
D6
1N4148
LK10
LINK
C35
5p
R61
1M 8th
C37
100n
C69
220p
R108
470R 8th
C73
220p
R66
470R 8th
D7
4V7 Zener 400mW PIC OVERCURRENT/SHORT g1
R23
RE2 2k2
R110
820R 8th
R112 C71
220u 16V -45V3 LE2 2k2
R118
820R 8th
C75
220u 16V
LK15
-15V LINK -45V2
R107
100k
R115
100k
To enhance viewing, please print to A3
AP12707/6 Power Amp Schematic (Protection)
18
Cambridge Azur 640A Integrated Amplifier
C65
220u 50V +45V2 +45V WIRE3
R43 R28
150R
150R
WIRE LINK
R27
150R
C66
220u 50V
Q16
MPSA92/93
U3
SAP15N
3
R29
1k 1
C
Q15
MPSA92/93
B
Q14
MJE350
D4
IN4004
R42
10k 8th
R99 Q18
MPSA42/43 100R S 4 RE1
R31
2.2n PPE Bypass (640A only)
RICLIP
R30
100R 8th
RFCLIP
100R 8th
C22 R39
10k 8th 47u 50V
C14
D E
5 2
C49
C77
22p
R53
150R 8th
R100
0.22R 3W RO
Q7
MPSA92/93
C18 CN2
1 2 H2 2.54mm SIGNAL IN 10u NP 16V
Q8
MPSA92/93
3
15n poly
R35
4k7 8th
R102
33k
R119
47R 8th
C13
10u NP 16V
R116
2 47R
J6
TERMINAL
R103 R36
33k 8th 150R
R37
330k 8th
C2
100p poly
R34
1k 8th
R22
0.22R 3W
1
1
470p
4
C8
C9
33p D E
R44
4R7 3W WW
To Loudspeaker PCB J8
TERMINAL
C17 R40
10R 8th
LK6
LINK S RE2
Q9 C19
47n poly signal1 MPSA42/43
Q10
MPSA42/43
100u NP 16V
C24
100n
LK8
LINK
R21
signal1 100R
2
Q11 R14
47R 8th
Q12
MJE340 5 B C
3
R15
47R 8th
MJE340
D2
IN4004
U2 Q13
MPSA13
R16
8k2 0.66W
R19
18k
SAP15P
+45V2
D1
ZEN 3V3
R18
1k GND
C46
100n 160V Poly
R17
100R
R41
150R
-45V2 WIRE LINK
C7
220u 50V
-45V
C11
220u 50V -45V2
WIRE4
To enhance viewing, please print to A3
AP12707/6 Power Amp Schematic (Left Channel)
19
Cambridge Azur 640A Integrated Amplifier
C45
+45V 220u 50V +45V3
WIRE1
R98 R72
150R
150R
WIRE LINK
R71 Q33
MPSA92/93 150R
C43
220u 50V
3
R74
1k
C
Q30
MPSA92/93
Q31
MJE350
1
B
R75
10k 8th
C44
5p
Q32
MPSA42/43
R70
100R S 4 LE1
D10
IN4004
LFCLIP
2.2n PPE Bypass (640A only)
R80
100R 8th
LICLIP
R81
100R 8th
R77
10k 8th
C42
47u 50V
C12
15n poly
U5
SAP15N D
2 5 3
C76
C78
22p
E
Q29
MPSA92/93
Q28
MPSA92/93
R67
150R
R69
0.22R 3W
C39 R83 CN11
1 2 H2 2.54mm SIGNAL IN 4k7 8th 10u NP 16V
R65 R64
150R 33k
R101
47R 8th
C47
10u NP 16V
1
R68
2 47R
LO
J12
TERMINAL
R52
0.22R 3W
1
R78
330k 8th
R82
33k 8th
C38
100p poly
R79
1k 8th
C50
4
To Loudspeaker PCB
E
C51
470p
33p
D
R50
4R7 3W WW
C41 R84
10R 8th
LK22
LINK S
Q27 C40
47n poly signal2 MPSA42/43
Q26
MPSA42/43
100u NP 16V
C28
100n
J10
TERMINAL
R51
100R
2
LE2
LK9
LINK
signal2
Q24
MJE340
Q25
MJE340 5 B C
R59
47R 8th
R58
47R 8th
R57
8k2 0.66W
Q23
MPSA13
U4 R54
SAP15P
3
D8
IN4004
D9
ZEN 3V3
R55
1k
18k
+45V3
R56
100R
R96
150R
WIRE LINK
C48
100n 160V Poly
C33
220u 50V
-45V
C64
220u 50V
-45V3
-45V3
WIRE2
To enhance viewing, please print to A3
AP12707/6 Power Amp Schematic (Right Channel)
20
Cambridge Azur 640A Integrated Amplifier
To enhance viewing, please print to A3
AP12707/6 Power Amp PCB Layout (Top Side)
21
Cambridge Azur 640A Integrated Amplifier
To enhance viewing, please print to A3
AP12707/6 Power Amp PCB Layout (Bottom Side)
22
Cambridge Azur 640A Power Amp PCB BOM
AP PART No. DRAWING NO DESCRIPTION POWER AMP PCB ASSEMBLY QTY 1 DESIGNATOR
AP131336
COMMENTS FIXES IN THE CORRECT POSITION ONTO THE PLASTIC PCB STANDOFFS AND SUPPORT BRACKET
AP12708/6a
BARE POWER AMP PCB 0.22R 3W WIREWOUND RESISTOR 4R7 3W WIREWOUND RESISTOR 8k2 0.66W CARBON FILM RESISTOR 10R 0.125W 1% METAL FILM RESISTOR 47R 0.125W 1% METAL FILM RESISTOR 100R 0.125W 1% METAL FILM RESISTOR 150R 0.125W 1% METAL FILM RESISTOR 470R 0.125W 1% METAL FILM RESISTOR 820R 0.125W 1% METAL FILM RESISTOR 1k 0.125W 1% METAL FILM RESISTOR 4k7 0.125W 1% METAL FILM RESISTOR 10k 0.125W 1% METAL FILM RESISTOR
1 4 2 2 3 6 5 4 4 4 3 7 11 R22, R52, R69, R100 R44, R50 R16, R57 R40, R84, R90 R14, R15, R58, R59, R101, R119 R30, R31, R80, R81, R89 R53, R64, R67, R103 R25, R66, R108, R113 R109, R110, R117, R118 R34, R79, R92 R4, R7, R35, R46, R83, R87, R91 R1, R2, R3, R8, R9, R10, R39, R42, R75, R77, R93 R36, R82 R62, R63, R104, R105 R37, R78 R12, R13, R60, R61 R68, R116 R97 R11, R17, R21, R51, R56, R70, R95, R99 R27, R28, R41, R43, R71, R72, R96, R98 R18, R29, R55, R74, R86 R23, R24, R111, R112 R5, R6, R94 R88 R19, R47, R48, R54 R65, R102 R45, R49 R106, R107, R114, R115 C5, C6, C16, C34, C35, C44 C77, C78 C49, C76 C9, C50 C2, C38 C15, C69, C72, C73 C8, C51 KP1830-222-255 MUST BE RAISED OFF PCB DUE TO HEAT MUST BE RAISED OFF PCB DUE TO HEAT
33k 0.125W 1% METAL FILM RESISTOR 220k 0.125W 1% METAL FILM RESISTOR 330k 0.125W 1% METAL FILM RESISTOR 1M 0.125W 1% METAL FILM RESISTOR 47R 0.5W 10% CERMET VERTICAL PRESET 2.54mm PITCH 47R 0.25W 1% METAL FILM RESISTOR 100R 0.25W 1% METAL FILM RESISTOR 150R 0.25W 1% METAL FILM RESISTOR 1k 0.25W 1% METAL FILM RESISTOR 2k2 0.25W 1% METAL FILM RESISTOR 4k7 0.25W 1% METAL FILM RESISTOR 11k 0.25W 1% METAL FILM RESISTOR 18k 0.25W 1% METAL FILM RESISTOR 33k 0.25W 1% METAL FILM RESISTOR 47k 0.25W 1% METAL FILM RESISTOR 100k 0.25W 1% METAL FILM RESISTOR 5p CERAMIC COG 50/100V 5mm PITCH CAPACITOR 22p CERAMIC COG 50/100V 5mm PITCH CAPACITOR 2n2 POLYPROPYLENE VISHAY KP1830 50/100V 5mm PITCH CAPACITOR 33p POLY 50/100V 5mm PITCH CAPACITOR 100p POLY 50/100V 5mm PITCH CAPACITOR 220p CERAMIC 50/100V 5mm PITCH CAPACITOR 470p CERAMIC 50/100V C0G 5mm PITCH CAPACITOR
2 4 2 4 2 1 8 8 5 4 3 1 4 2 2 4 6 2 2 2 2 4 2
23
AP PART No.
DRAWING NO
DESCRIPTION 4.7n CERAMIC 50/100V 5mm PITCH CAPACITOR 15n POLY 50/100V 5mm PITCH CAPACITOR 47n POLY 50/100V 5mm PITCH CAPACITOR
QTY 1 2 10 C27
DESIGNATOR
COMMENTS
C12, C14 C19, C20, C32, C40, C55, C56, C57, C58, C67, C68 C3, C4, C24, C28, C31, C36, C37, C46, C48, C52 C13, C18, C39, C47 C17, C41 C1 C59 C22, C42 C60, C61 C54 C70, C71, C74, C75 C7, C11, C33, C43, C45, C64, C65, C66 C53 C21, C23, C25, C26, C29, C30, C62, C63 U1, U6 U3, U5 U2, U4 U7 U8 U9 U10 Q1, Q2 Q3, Q4, Q5, Q6 Q7, Q8, Q15, Q16, Q21, Q28, Q29, Q30, Q33 Q9, Q10, Q18, Q19, Q22, Q26, Q27, Q32, Q35, Q36 Q11, Q12, Q20, Q24, Q25 Q14, Q31 Q13, Q23 D2, D4, D8, D10, D13, D14, D15, D16, D31, D32 D17, D18, D19, D20 D6, D12, D21, D22, D23, D24, D25, D26, D27, D28 D1, D9 D7 D29, D30 CN2, CN4, CN11 CN6, CN8 CN5 CN7 MUST BE RAISED OFF PCB DUE TO HEAT
100n CERAMIC 50/100V 5mm PITCH CAPACITOR
10
10u 35V NON POLAR ELECTROLYTIC CAPACITOR 100u 16V NON POLAR ELECTROLYTIC CAPACITOR 1u 16V ELECTROLYTIC CAPACITOR 47u 16V ELECTROLYTIC CAPACITOR 47u 50V ELECTROLYTIC CAPACITOR 100u 16V ELECTROLYTIC CAPACITOR 100u 35V ELECTROLYTIC CAPACITOR 220u 16V ELECTROLYTIC CAPACITOR 220u 50V ELECTROLYTIC CAPACITOR 470u 35V ELECTROLYTIC CAPACITOR 2200u 50V ELECTROLYTIC CAPACITOR PD077 PY010 PY016 PY539 NE5534 SINGLE OP AMP SAP15NO POWER TRANSISTOR SAP15PO POWER TRANSISTOR LM393 DUAL COMPARATOR 7805 5V REGULATOR 7815 15V REGULATOR 7915 -15V REGULATOR PY219 PY214 PY021 BC327 PNP TRANSISTOR BC337 NPN TRANSISTOR MPAS92/93 PNP TRANSISTOR
4 2 1 1 2 2 1 4 8 1 8 2 2 2 1 1 1 1 2 4 9
PY013
MPAS42/43 NPN TRANSISTOR
10
PY012 PY018 PY536
MJE340 NPN TRANSISTOR MJE350 PNP TRANSISTOR MPSA13 DARLINGTON NPN TRANSISTOR 1N4004 RECTIFIER DIODE
5 2 2 10
1N5402 RECTIFIER DIODE 1N4148 SIGNAL DIODE
4 10
3V3 400mW ZENER DIODE 4V7 400mW ZENER DIODE 10V 400mW ZENER DIODE 2 WAY JST CONNECTOR 2.54mm PITCH 3 WAY JST CONNECTOR 2.54mm PITCH 4 WAY JST CONNECTOR 2.54mm PITCH 8 WAY JST CONNECTOR 2.54mm PITCH
2 1 2 3 2 1 1
24
AP PART No.
DRAWING NO
DESCRIPTION LINK WIRE 24SWG 20mm LONG
QTY 19
DESIGNATOR LK2, LK3, LK4, LK6, LK8, LK9, LK10, LK11, LK12, LK13, LK14, LK15, LK16, LK17, LK18, LK19, LK20, LK22, LK26
COMMENTS
AP103492 AP10417/3
HEATSINK AND PCB SUPPORT BRACKET SHELF HEATSINK ASSEMBLY M3 X 8 POZI PAN MACHINE SCREW BLACK
4 2 12
FIT TO POWER AMP PCB FIT TO POWER AMP PCB USED TO AFFIX AMP BOARD AND SHELF HEATSINK ASSEMBLY TOGETHER 4X USED TO FIX OUTPUT TRANSISTORS TO HEATSINK, 2X USED TO FIT AP12932/1 HEAT SENSOR BRACKET TO HEATSINK ASSEMBLY POSITION IN BETWEEN OUTPUT TRANSISTORS AND SHELF HEATSINK ASSEMBLY WITH APPROPRIATE HEATSINK COMPOUND USED FOR FIXING M3X12 OUTPUT TRANSISTOR FIXING SCREWS USED FOR FIXING M3X12 OUTPUT TRANSISTOR FIXING SCREWS POSITON IN PLACE ON THE SHELF HEATSINK ASSEMBLY TO INSULATE AP12932/1HEAT SENSOR BRACKET FROM Q20, AND FROM HEATSINK ASSEMBLY. APPLY HEATSINK COMPOUND. TO INSULATE AP12932/1HEAT SENSOR BRACKET FROM Q20, AND FROM HEATSINK ASSEMBLY. APPLY HEATSINK COMPOUND. USED TO FIX TRANSISTOR Q20 ON AMP PCB TO HEAT SENSOR BRACKET, MUST BE TIGHT TO GET Q20 TO RESPOND TO HEATSINK TEMNPERATURE EFFECTIVELY (U8, U9, U10) U8 MUST NOT USE AN INSULATION KIT ALTHOUGH IT MUST STILL USE HEATSINK COMPOUND TO INSURE ADEQUATE HEAT TRANSFER
M3 X 12 POZI PAN MACHINE SCREW BLACK
6
MICA THERMAL PAD
4
M3 LOCK WASHER
4
M3 NUT BLACK
4
AP12932/1 AP13580/1
CAMBRIDGE AUDIO NEW RANGE AMP HEAT SENSOR BRACKET CAMBRIDGE AUDIO AZUR 640 AMP HEATSENSOR INSULATION TOP SHEET
1 1
AP13581/1
CAMBRIDGE AUDIO AZUR 640 AMP HEATSENSOR INSULATION BOTTOM SHEET
M3 X 5 POZI PAN MACHINE SCREW BLACK
1
AP12106/1
3 WAY TO220 HEATSINK
1
TO220 INSULATING KIT M3 X 6 TAPTITE POZI PAN MACHINE SCREW AP13387/2 A600 MAINS PCB TO AMP PCB LOOM
2 5 1
U9 AND U10 ONLY 2X FIT HEATSINK TO PCB, 3X FIT U8, U9, U10 TO HEATSINK TO BE FITTED TO POWER AMP PCB BEFORE FITTING IT TO CHASSIS TO BE FITTED TO POWER AMP PCB BEFORE FITTING IT TO CHASSIS TO BE FITTED TO UNDERSIDE OF AMP PCB BEFORE FITTING IT TO CHASSIS
AP13390/1
A600 AMP PCB TO SPEAKER TERMINAL PCB LOOM A600 AMP PCB UNDERSIDE LINKS
1
AP13399/3
1
25
Cambridge Azur 640A Integrated Amplifier
J26
TERMINAL headphone SPEAKER TEST
7
RL1:C
6 12V 8A RELAY
J23
TERMINAL
J24
TERMINAL
R224
WW
2R2 3W
8
W201
To AP13772/1
C202:B J9
TERMINAL 3 4 SPKR 4-WAY 7 8
J11
TERMINAL
C202:D
SPKR 4-WAY
J27
LK24
LINK SPEAKER TEST 1 2 3 4
CN3 D5
1N4002
1
RL1:A
TERMINAL headphone
2 12V 8A RELAY
RIGHT
H4 2.54mm
SPEAKER RELAY
R33 D32 J5
TERMINAL 4 SPEAKER TEST 1N4002 1k 8th
Q17
MPSA13
R32
10k 8th
RL1:B
3 12V 8A RELAY
J22
speakerB 1 2 5 6
J25
TERMINAL
R264 2R2 L202
To AP13772/1
3W
5
J28
TERMINAL headphone
J7
TERMINAL
CN202:A
SPKR 4-WAY
CN202:C
SPKR 4-WAY
LK25
LINK
LEFT
To enhance viewing, please print to A3
AP12707/6 Speaker Output Schematics
26
Cambridge Azur 640A Integrated Amplifier
To enhance viewing, please print to A3
AP12707/6 Speaker Output PCB Layout (Top Side)
27
Cambridge Azur 640A Integrated Amplifier
To enhance viewing, please print to A3
AP12707/6 Speaker Output PCB Layout (Bottom Side)
28
Cambridge Azur Speaker Output PCB BOM
AP PART No. DRAWING NO DESCRIPTION QTY DESIGNATOR COMMENTS
AP131336
SPEAKER TERMINAL OUTPUT PCB ASSEMBLY AP12708/6b BARE SPEAKER TERMINAL PCB 2R2 3W WIREWOUND RESISTOR 1k 0.125W 1% METAL FILM RESISTOR 10k 0.125W 1% METAL FILM RESISTOR PY536 MPSA13 DARLINGTON NPN TRANSISTOR 1N4004 RECTIFIER DIODE 4 WAY JST CONNECTOR 2.54mm PITCH LINK WIRE 24SWG 20mm LONG PY594 12V 8A CONTACTS RELAY
1 2 1 1 1 1 1 2 1 R224, R264 R33 R32 Q17 D5 CN3 LK24, LK25 RL1
POSITION ON REAR PANEL
25TURN 19AWG OUTPUT INDUCTOR ZUANBAO WP8-21A 8 WAY SPEAKER SOCKET
2 1
W201, W202 CN202
FORWARD FRM10N 2C2S 12V 8A USD0.61/10K --OR-- TYH HG4509 12V 8A USD0.66/5K AS PER DRAWING: AP13772/1 FITS UPSIDE DOWN SO BLACK AND RED PEG COLOURS SHOULD BE INVERTED
29
Cambridge Azur 640A Integrated Amplifier
J3 CN3
L E N
FU1
20MM F6.3AL
RL1:C
6 RELAY
J1
8 7 TERMINAL
TRANSFORMER CONNECTIONS
FU3
earth 20MM T6.3/3.15AL
J15
BROWN/BLACK
TERMINAL
J5
TERMINAL
FU4
20MM F500mAL
J8
TERMINAL
C5
X1 10n
J4 C2
X2 680N SUPPRESSION TERMINAL TRANSFORMER
IEC-SOC
FU2
20MM F6.3AL
RL1:B
3 RELAY
J2
5 4 TERMINAL
J6
TERMINAL
J9
TERMINAL
J7
TERMINAL
FU5
20MM F500mAL
J10
TERMINAL
C6
X1 10n
J11 J13
BLUE/WHITE TERMINAL
J12
TERMINAL
2
RL1:A
D10
1N4004
1 RELAY
CN4
3 2 1 H3 2.54mm
D11 R25
BZX79C3V9 1k
Q1
MPSA13
R26
10k
To enhance viewing, please print to A3
AP12711/9 Mains Input Schematic
30
Cambridge Azur 640A Integrated Amplifier
To enhance viewing, please print to A3
AP12711/9 Mains Input PCB Layout (Top Side)
31
Cambridge Azur 640A Integrated Amplifier
To enhance viewing, please print to A3
AP12711/9 Mains Input PCB Layout (Bottom Side)
32
Cambridge Azur Mains Input PCB BOM
AP PART No. DRAWING NO DESCRIPTION QTY DESIGNATOR
AP131336
COMMENTS
MAINS INPUT PCB ASSEMBLY
1
FIXES IN THE CORRECT POSITION ONTO THE PLASTIC PCB STANDOFFS
AP12712/8a
BARE MAINS INPUT PCB X2 680N SUPPRESSION 1k 0.25W 1% METAL FILM RESISTOR 10k 0.25W 1% METAL FILM RESISTOR 10n CERAMIC X1 Y2 MAINS RATED CAPACITOR
1 1 1 1 2 1 1 1 2 1 1 5 2 2 1 1 C2 R25 R26 C5, C6 Q1 D11 D10 J13, J15 CN4 CN3 FU1, FU2, FU3, FU4, FU5 FU4, FU5 FU1, FU2 FU3 RL1 FORWARD FRM10N 2C2S 12V 8A USD0.61/10K --OR-- TYH HG4509 12V 8A USD0.66/5K TO FIX IEC SOCKET TO MAINS PCB TO FIX IEC SOCKET TO MAINS PCB TO FIX IEC SOCKET TO MAINS PCB TO FIT UNDER PCB FIRST TECH AS PER D500 SE CD PLAYER AS PER PCB AP11012/3
PY536
MPSA13 NPN DARLINGTON TRANSISTOR 3V9 400mW ZENER DIODE 1N4004 RECTIFIER DIODE METAL MAINS TERMINAL EYELETS 3 WAY JST CONNECTOR 2.54mm PITCH IEC MAINS SOCKET PC1287 FUSE HOLDERS WITH SAFETY COVERS
PY596 PY361 PY595 PY594
FUSE F1.6AL FUSE F6.3AL FUSE T3.15AL 12V 8A CONTACTS RELAY
M3 X 8 POZI PAN MACHINE SCREW M3 LOCKWASHERS M3 NUT AP13895/1 INSULATING SHEET
2 2 2 1
33
Cambridge Audio Azur 640A/540A Amplifier IC Pin Layouts
Control PCB
PIC16C57C (U5)
BA6218 (U6)
34
74HC4094 (U7)
35
Input PCB
NJU7313 (U1)
NE5532 (U2,U3,U4,U5 & U6)
36
Power PCB
NE5534 (U1 & U6)
LM393 (U7)
37
SAP15NO (U3 & U5)
SAP15PO (U2 & U4)
38
Cambridge Azur 640A Amplifier (Silver-Black Difference BOM)
AP PART No. DRAWING NO DESCRIPTION QTY COMMENTS
AP13133/6
CARTON LABEL (MODEL NO.) UK BLACK PY593 PY591 PY575 CAMBRIDGE SELECTOR KNOB MK3 CAMBRIDGE NEW RANGE AMP VOLUME KNOB CAMBRIDGE NEW RANGE AMP FRONT PANEL (PUNCHED AND PRINTED) OPUS CONTROL BOX BUTTON CAMBRIDGE NEW RANGE AMP 7mm TAC SWITCH BUTTON CAMBRIDGE NEW RANGE AMP 7mm PUSH SWITCH BUTTON PY531 PY532 PY515 CAMBRIDGE NEW RANGE FOOT MOULDING CAMBRIDGE AUDIO NEW RANGE TOP PANEL WITH VENTS M2.6 x 8 MC Torx Recessed Black
1 3 1 1 1 6 2 4 1 8
FOR BOX
SCREENED WITH ARTWORK AP13679/2 POSITION IN PLACE ON THE FRONT PANEL POSITION IN PLACE ON THE FRONT PANEL POSITION IN PLACE ON THE FRONT PANEL POSITION IN PLACE ON BOTTOM PANEL POSITION ON TOP OF THE PRODUCT TOP PANEL SCREWS
39
Cambridge Azur 640A Amplifier
QUAD PHONO QUAD PHONO QUAD PHONO QUAD PHONO QUAD PHONO QUAD PHONO QUAD PHONO QUAD PHONO QUAD PHONO QUAD PHONO QUAD PHONO QUAD PHONO QUAD PHONO QUAD PHONO QUAD PHONO
L
CN4:B
DUAL PHONO
3
QUAD PHONO
C26
CN10:A
100n Pre Only
CN13:D
CN12:D
CN11:D
CN10:D
CN10:C
CN11:C
CN12:C
CN13:C
CN11:A
CN12:A
CN13:A
CN13:B
CN12:B
CN11:B
CN10:B
J8
CHASSIS
R53
100R Pre Only
R
1
1
4
1
4
1
4
1
4
CN4:A
2 PHONO/AUX IN R 3 PHONO/AUX IN L
DUAL PHONO
5 TUNER IN R 2 5 2 TAPE OUT2 R 5 TAPE OUT1 R 2 TAPE MONR 5 DVD IN R PREOUT R CD IN R 2
TAPE MON L 6
TAPE OUT1 L 3
TAPE OUT2 L 6
3
6
3
DVD IN L
TUNER IN L
PREOUT L
CD IN L
6
U6:B
L CH OUT 5 7 6 NE5532 +15V
R9
56R
R28 R27 R23 R21
220K 220K 220K 220K
CN8
1 2 3 4 5 6 HEADER6 PHONO I/O
CN7
6 5 4 3 2 1 HEADER6 PHONO PSU
+30V
R32 R33 R40 R41
220K 220K 220K 220K
C2
47n poly 1
R22
220K
AV IN R
AV IN L
R50
220K
8
U6:A
R CH OUT
3 2 NE5532
4
R8
56R
C3
LK1
47n poly
LK2 R6
220K
-15V
R17
+12V
R51
R30 R31 R29 R26 R25 R24
220K
C4
47n poly
C5
47n poly 1 2 3 4 5 6 7 8 9 10 11 12 13 14
-12V
R34
R35 R36 R37 R38 R39
R49
100R
100R
100R
100R
100R
100R
100R 28 27 26 25 24 23 22 21 20 19 18 17 16 15
U1
VDD R1 R2 R3 R4 R-COM1 R5 R6 R-COM2 R7 R8 R-COM3 DATA CK VEE L1 L2 L3 L4 L-COM1 L5 L6 L-COM2 L7 L8 L-COM3 ST VSS
100R
100R
100R
100R
100R
100R
100R
C25
5 10u 16V NP 6
U3:B
7
R CH IN
R16
100K
R15
100K
NE5532
+45V +30V
NJU7313
R14
10k
R10
10k
C13 R55
680R +15V
st
+15V
C7
47n poly
22p
R48
+12V 100R
CN1
clk dat HEADPHONE 1 2 3 4 H4 2.54mm
C14
3 10u 16V NP 2
8
CN22
1 2 3 4 H4 2.54mm
D1
12V Zener 400mW
C22
10u 25V
U3:A
1 L CH IN NE5532
R19
100K
R18
4
100K
C8
-15V 47n poly
C23 D2 R56
100R 12V Zener 400mW -12V 10u 25V
R7
10k
R5
10k
C12
-15V 22p
To enhance viewing, please print to A3
AP12714/6 Input Select PCB Schematic
40
Cambridge Azur 640A Amplifier
QUAD PHONO QUAD PHONO QUAD PHONO QUAD PHONO QUAD PHONO QUAD PHONO QUAD PHONO QUAD PHONO QUAD PHONO QUAD PHONO QUAD PHONO QUAD PHONO QUAD PHONO QUAD PHONO QUAD PHONO
L
CN4:B
DUAL PHONO
3
QUAD PHONO
C26
CN10:A
100n Pre Only
CN13:D
CN12:D
CN11:D
CN10:D
CN10:C
CN11:C
CN12:C
CN13:C
CN11:A
CN12:A
CN13:A
CN13:B
CN12:B
CN11:B
CN10:B
J8
CHASSIS
R53
100R Pre Only
R
1
1
4
1
4
1
4
1
4
CN4:A
2 PHONO/AUX IN R 3 PHONO/AUX IN L
DUAL PHONO
5 TUNER IN R 2 5 2 TAPE OUT2 R 5 TAPE OUT1 R 2 TAPE MONR 5 DVD IN R PREOUT R CD IN R 2
TAPE MON L 6
TAPE OUT1 L 3
TAPE OUT2 L 6
3
6
3
DVD IN L
TUNER IN L
PREOUT L
CD IN L
6
U6:B
L CH OUT 5 7 6 NE5532 +15V
R9
56R
R28 R27 R23 R21
220K 220K 220K 220K
CN8
1 2 3 4 5 6 HEADER6 PHONO I/O
CN7
6 5 4 3 2 1 HEADER6 PHONO PSU
+30V
R32 R33 R40 R41
220K 220K 220K 220K
C2
47n poly 1
R22
220K
AV IN R
AV IN L
R50
220K
8
U6:A
R CH OUT
3 2 NE5532
4
R8
56R
-15V
47n poly
LK1
C3
LK2
R17
+12V
-12V
R51
1k
R30 R31 R29 R26 R25 R24
1k 1k 1k 1k 1k 1k 220K
C4
47n poly
C5 R6
47n poly 1 2 3 4 5 6 7 8 9 10 11 12 13 14 220K
R34 R35 R36 R37 R38 R39
1k 1k 1k 1k 1k 1k
R49
1k
U1
28 27 26 25 24 23 22 21 20 19 18 17 16 15
VDD R1 R2 R3 R4 R-COM1 R5 R6 R-COM2 R7 R8 R-COM3 DATA CK VEE L1 L2 L3 L4 L-COM1 L5 L6 L-COM2 L7 L8 L-COM3 ST VSS
C25
5 10u 16V NP 6
U3:B
7
R CH IN
R16
100K
R15
100K
NE5532
NJU7313AL
R14
10k
R10
10k
+45V +30V +15V
st
C13
+15V
C7
47n poly
22p
R55
680R
R48
+12V 100R
CN1
clk dat HEADPHONE 1 2 3 4 H4 2.54mm
C14
3 10u 16V NP 2
8
CN22
1 2 3 4 H4 2.54mm
D1
12V Zener 400mW
C22
10u 25V
U3:A
1 L CH IN NE5532
R19
100K
R18
4
100K
C8
-15V 47n poly
C23 D2 R56
100R 12V Zener 400mW -12V 10u 25V
R7
10k
R5
10k
C12
-15V 22p
To enhance viewing, please print to A3
AP12714/7 Input Select PCB Schematic
41