Cambridge Audio Azur 640C User manual

Gallery Court Hankey Place London SE1 4BB UK
Tel: [phone] Fax: [phone]
640C
Issue Date: 22nd December 2004
________________________________________________________________________
SERVICE MANUAL
________________________________________________________________________
SPECIFICATIONS:
D/A Converter Wolfson
WM8740
24-Bit/192kHz
Capable
Freq response (-0.5dB) 10Hz to 20kHz
THD <-92dB
Dynamic Range <105dB
Channel Separation >75dB
Jitter (correlated) <260pS
Digital Outputs Opt and Coax
Dimension (mm) (H x W x D) 70 x 430 x 310
Weight (kg) 4.6
AP14839/2
1

640C SERVICE MANUAL
TABLE OF CONTENTS
Safety Precautions & Important Notes 3
Laser Safety Precautions 4
Exploded Assembly Diagram 5
Main Assembly BOM (Silver Unit) 6-8
Front Panel PCB Schematic 9
Front Panel PCB Layout (Top Side) 10
Front Panel PCB Layout (Bottom Side) 11
Front Panel PCB BOM (Silver Unit) 12/13
ServoPCBSchematic 14
Servo PCB Schematic (Power Supply) 15
Servo PCB Layout (Top Side) 16
Servo PCB Layout (Bottom Side) 17
ServoPCBBOM 18/19
DACPCBSchematic 20
DACPCBLayout(TopSide) 21
DACPCBLayout(BottomSide) 22
DACPCBBOM 23
MainsInputPCBSchematic 24
Mains Input PCB Layout (Top Side) 25
Mains Input PCB Layout (Bottom Side) 26
MainsInputPCBBOM 27
ICPinLayoutDetails 28-33
Silver / Black Differences BOM 34
2

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.

LASER SAFETY PRECAUTIONS
Caution: These labels may be attached to the unit on the rear and inside to
inform that it contains a laser component. Use of controls or adjustments, or
performance of procedures other than those specified within the service or
instruction manual may result in hazardous radiation exposure.
WARNING!
1. Service should only be performed by qualified personnel.
2. This equipment has been designed and manufactured to meet
international safety standards; it is the legal responsibility of the repairer to
ensure that these safety standards are maintained.
3. Any repairs must be made in accordance with the relevant safety
standards.
4. It is essential that safety and EMC critical components are replaced with
Cambridge Audio approved parts only.
CLASS 1 LASER PRODUCT
NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK OR BASE UNIT
The laser diode in the optical pick-up block may suffer electrostatic breakdown because of the
potential difference generated by the charged electrostatic load, etc. on clothing and the human
body.
During repair, pay attention to electrostatic breakdown and also use the procedure in the printed
matter which is included in the repair parts.
The flexible board is easily damaged and should be handled with care.
NOTES ON LASER DIODE EMISSION CHECK
The laser beam on this model is concerated so as to be focused on the disc reflective surface b
y
the objective lens in the optical pick-up block. Therefore, when checking the laser diode
emission, observe from more than 30cm away from the objective lens.
4

26/11/04
8
GTL
DRAWING.
AP16811/1
1
640C EXPLODED ASSEMBLY
1: ORIGINAL DRAWING 26/11/04.
2
4
18
19
1
22
17
5
6
15
14
16
9
3
10
20
13
7
21
11
12
C
DRAWING NOTES:-
REVISIONS NOTES:-
DATE
EDITOR
REV
THIRD ANGLE
PROJECTION
B
A
A
B
C
D
1
2
3
E-MAIL simon.freeth@audiopartnership
FINISH:
MATERIAL:
REVISIONS & DATE
E-MAIL nick@audiopartnership
1:5SCALE:
E-MAIL grahame@audiopartnership
FAX: [phone]
1
DO NOT SCALE FROM DRAWING
DWG. NO.
A0
SIZE
TITLE:
AUDIO PARTNERSHIP PLC
UNLESS OTHERWISE SPECIFIED:
OF1SHEET
TEL: [phone]
LONDON SE1 4BB
HANKEY PLACE
3 GALLERY COURT
AUDIO PARTNERSHIP PLC
COPYRIGHT
0.5
--
--
PROPRIETARYAND CONFIDENTIAL
ANGULAR
0.1mm2 DECIMAL IE 75.75
OF AUDIO PARTNERSHIP IS PROHIBITED.
F
E
F
E
1
2
3
4
5
6
7
8
87654
DIMENSIONSARE IN MM's
TOLERANCES:
WHOLENO.s IE 75 0.5mm
1 DECIMAL IE 75.5 0.2mm
THE INFORMATION CONTAINED IN THIS DRAWING IS THE SOLE PROPERTY OF
AUDIO PARTNERSHIP PLC.
ANY REPRODUCTION IN PART OR AS A WHOLE WITHOUT T HE WRITTEN PERMISSION
D
Drawing re
f
AP part Internal ref Description
1 CA new side panel
2 CA new plastic insert rear
3 CA new plastic insert front
4 CA new back panel
5PY507 6550-010204-000-01 Azur 640C Top Panel Black
5PY508 6550-010204-000-02 Azur 640C Top Panel Silver
6PY515 7002-608010-001 Screw M2.6 x 8 M/C Torx Recessed 1/K Head Black
6PY516 7002-608010-006 Screw M2.6 x 8 M/C Torx Recessed 1/K Head En-Plated (silver)
7 PY586 6564-010001-000A01 Azur-640C.Front panel SILVER
7 PY582 6564-010001-000-01 Azur-640C.Front panel BLACK
8 PY587 8564-001001-301 Azur-640C Complete front panel assy (Silver) REV A
8 PY583 8564-001002-301 Azur-640C Complete front panel (BLACK) REV A
9PY563 3200-576690-100 TRANSFORMER 115V/230V AC10V/2A 16*2/0.5A ES-57-669
10 PY541 6050-150010-000A01 PLASTIC FOOT GREY PAINT SILVER
10 PY531 6050-150010-000 PLASTIC FOOT BLACK (AP126522)
11 PY340 9692-006002-101 Mechan Assy (PU92TL-210) W/Sony KSM213CCM ReV A
12 PY790 3009-213000-000 Sony laser assy KS213CCM
13 PY719 6050-150012-000-01 7MM TAC SWITCH BUTTON (BLACK)
13 PY720 6050-150012-000A01 7MM TAC SWITCH BUTTON (SILVER)
14 PY704 6600-170104-000 CA NEW RANGE AMP 7MM TAC SWITCH CUSHION
15 PY571 9464-001000-011 Azur-540C & 640C MAIN SERVO BOARD ASSY
16 PY588 9460-001300-581 Azur-640C DAC BOARD ASSY REV A
17 PY589 9464-001000-071 Azur-640C POWER PCB ASSY REV A
18 PY573 9805-064001-000 Azur-340/540/640AC REMOTE CONTROL ASSY
19 PY544 6600-170100-000 FOOT PAD FOR Azur-640A
20 PY568 6564-010006-000A01 Azur-640C.Silver CD DOOR W/SILKSCREEN PMS COOL GREY 7C
20 PY554 6564-010006-000-01 Azur-640C.Black CD DOOR W/SILKSCREEN PMS COOL GREY 7C
21 PY552 3110-064580-100 LCD DISPLAY ISO6458P01V0 113*25.7MM NEGATIVE (BLACK UNIT)
21 PY562 3110-064580-000 LCD DISPLAY ISO6458P00V0 113*25.7MM POSITIVE (SILVER UNIT)
22 PY556 9464-001000-041 Azur-540C & 640C CONTROL BOARD ASSY REV A
Note:user manual is downloadable from our www.cambridge-audio.co.uk
5

AP13752/3
AP Part No. DRAWING
NO
DESCRIPTION QTY COMMENTS
AP13504/1 POLY ENDCAP PACKAGING 2
AP13505/1 CARTON PACKAGING W/HANDLE 1 PRINTED TO ARTWORK AP13716/1
AP13613/1 CAMBRIDGE AUDIO AZUR WOVEN BAG FOR REMOTE CONTROL 1 PACK REMOTE CONTROL INSIDE,
CAMBRIDGE AZUR REMOTE CONTROL COMPLETE. MODEL No RC-
540AC/640AC
1 MOUNTED INTO POLY ENDCAP
PACKING IN REBATE PROVIDED
AAA ALKALINE BATTERIES 3 FOR REMOTE. PLACE IN
INSTRUCTION MANUAL POLYBAG
PY566 AP14004/1 640C CD PLAYER OWNERS' MANUAL 1
AP13945/1 CARTON LABEL (MODEL NO.) UK SILVER 1 FOR BOX
SERIAL NUMBER LABEL, BLANK (6.5X35.5mm) 3 1 X REAR PANEL, 1 X BOX, 1 X
SHIPPING CARTON
ISO 9002 LABEL 1 AFFIXED TO REAR PANEL ABOVE
IEC SOCKET
AP10087/2 "MADE UNDER LICENCE IN PRC" STICKER 1 AFFIXED TO REAR PANEL BELOW
IEC SOCKET
POLYBAG 173X260X4C mm 1 FOR INSTRUCTION
MANUALOWNERS CERTIFICATE
AND REMOTE BATTERIES
AP13612/1 CAMBRIDGE AUDIO AZUR 2 RIDGE WOVEN BAG 1 PACK AMP UNIT INSIDE
1830mm AC IEC POWER CORD SET BS STANDARD FUSED 3 AMP 1 MUST BE BS APPROVED
BLUE TAPE SEAL FOR CAMBRIDGE CARTON 1
FRONT PANEL ASSEMBLY
PY586 AP12741/1 CAMBRIDGE NEW RANGE CD FRONT PANEL (PUNCHED AND PRINTED)
(SILVER)
1 SCREENED WITH ARTWORK
AP13591/3 & AP13593/1
AP12935/1 CAMBRIDGE NEW RANGE IR LENS 1 GLUED IN PLACE ON THE FRONT
PANEL
AP13322/1 CAMBRIDGE NEW RANGE 105mm DISPLAY WINDOW 1 GLUED IN PLACE ON THE FRONT
PANEL
AP13436/2 CAMBRIDGE NEW RANGE CD SUB PANEL LEFT (POWER) 1 FASTENEND IN PLACE INBETWEEN
THE LEDGES ON THE FRONT
PANEL, ALIGN UP THE POWER
BUTTON HOLES
AP12931/1 CAMBRIDGE NEW RANGE AMP LIGHTGUIDE, CUT TO SINGLE PIPE 1 FASTEN TO SUBPLATE LEFT
(POWER)
M3 X 6 POZI PAN STP SCREW 1 AFFIXES SINGLE LIGHTGUIDE TO
SUBPLATE
M3 X 6 C/S POZI MACHINE SCREW 4 FASTEN THE SUB PLATE LEFT TO
THE FRONT PANEL
AP13585/1 CAMBRIDGE NEW RANGE AMP 9mm TAC SWITCH CUSHION 1 POSITION ON THE CONTROL BOX
BUTTON, DOWN THE MAIN SHAFT
AFFIX USING ADHESIVE PROVIDED
ON THE CUSHION.
PY145 AP11782/1 OPUS CONTROL BOX BUTTON (SILVER) 1 POSITION IN PLACE ON THE
FRONTPANEL
AP13437/2 CAMBRIDGE NEW RANGE CD SUB PANEL RIGHT (FUNCTION) 1 FASTENEND IN PLACE INBETWEEN
THE LEDGES ON THE FRONT
PANEL, ALIGN UP THE FUNCTION
BUTTON HOLES
M3 X 6 C/S POZI MACHINE SCREW 4 FASTEN THE SUB PLATE RIGHT TO
THE FRONT PANEL
AP12934/1 CAMBRIDGE NEW RANGE AMP 7mm TAC SWITCH CUSHION 5 POSITION ON THE 7mm TACT
SWITCH BUTTONS, DOWN THE
MAIN SHAFT AFFIX USING
ADHESIVE PROVIDED ON THE
CUSHION.
AP12925/1 CAMBRIDGE NEW RANGE AMP 7mm TAC SWITCH BUTTON 5 POSITION IN PLACE ON THE
FRONTPANEL
Cambridge Azur 640CCD Player (Main Assembly BOM Silver Unit)
Note, resistors, capacitors and other 'generic' electronic components are not usually stocked by the manufacturer. Please obtain these locally. 6

AP Part No. DRAWING
NO
DESCRIPTION QTY COMMENTS
BOTTOM PANEL ASSEMBLY
AP12735/5 CAMBRIDGE NEW RANGE CD BOTTOM PANEL 1
12.2mm BRASS THREADED STANDOFF 1 POSITION IN PLACE ON BOTTOM
PANEL
M3 X 8 POZI PAN MACHINE SCREW 1 TO AFFIX BRASS THREADED
STANDOFF TO BOTTOM PANEL
PY541 AP12652/2 CAMBRIDGE NEW RANGE FOOT MOULDING (SILVER) 4 POSITION IN PLACE ON BOTTOM
PANEL
PY544 AP12883/3 CAMBRIDGE NEW RANGE FOOT PAD 4 AFFIX ON FOOT USING ADHESIVE
SURFACE
M3 X 6 PLASTITE POZI PAN 4 AFFIX FEET TO BOTTOM PANEL
12.7mm PLASTIC PCB STANDOFF 7 PUSH SNAP FIT ON BOTTOM PANEL
8 mm PLASTIC PCB STANDOFF 1 PUSH SNAP FIT ON BOTTOM PANEL
M4 X 12 POZI PAN MACHINE BOLT 2 FIX THROUGH EARTHING POINT
HOLES ON BOTTOM PANEL
M4 NUT STANDARD 2 USED TO FIX ABOVE BOLTS
M4 LOCK WASHER 2 FOR EARTH BOLTS
M4 X 12 POZI PAN MACHINE BOLT 2 TO FIX THROUGH TRANSFORMER
HOLES IN BOTTOM PANEL
M4 LOCK WASHER 2 PLACE ON TRANSFORMER FIXING
BOLTS
M4 NUT STANDARD 2 USED TO FIX TRANSFORMER IN
PLACE
FW-2S PIN GOOD STICK ON CABLE CLIP 3 USED TO CLIP DAC POWER CABLE
AP13894/ AND TRANSFORMER TO
SERVO BOARD CABLE
AP13571/1 CAMBRIDGE AUDIO NEW RANGE CD TRANSFORMER PAD 1 POSITION IN PLACE ON BOTTOM
PANEL WITH THE FIXING BOLTS
THROUGH SUPPLIED HOLES
PY563 AP13157/3 CAMBRIDGE AUDIO EI 115/230V 540C/640C TRANSFORMER 1 POSITION ON TRANSFORMER PAD
WITH FIXING BOLTS THROUGH
SUPPLIED HOLES
AP13545/1 CAMBRIDGE AUDIO NEW RANGE CD TRANSFORMER CAN WITH ADHESIVE
PAD ADDED
1 SCREENED WITH ARTWORK
AP13721/1 POSITION ON TOP OF
TRANSFORMER AND PRESS TO
STICK IN PLACE
CD Mechanism with Loader 1 POSITION IN THE CORRECT
POSITION ON THE BOTTOM PANEL
PY057 CD mechanism (Sony) 1
M3 X 6 POZI PAN MACHINE SCREW 4 TO AFFIX THE CD MECH TO THE
BOTTOM PANEL
AP13895/1 MAINS PCB INSULATING SHEET 1 TO BE POSITIONED OVER
STANDOFFS UNDER POWER PCB
AP13544/2 CAMBRIDGE AUDIO NEW RANGE CD MECH TOP STICKER 1 SCREENED WITH ARTWORK
AP13763/1THEN POSITION OVER
LOCATING PIPS ON CD MECH TOP
SURFACE AND PRESS TO STICK
PY568 AP13495/1 CAMBRIDGE AUDIO NEW RANGE CD DRAW FRONT (SILVER) 1 SCREENED WITH ARTWORK
AP13601/1 POSITON ON DRAW
FRONT AND GLUE IN PLACE
M3x8 POSIPAN MACHINE SCREW 1 TO FIX SERVO BOARD TO BRASS
THREADED STAND OFF
AP13617/1 16 WAY LASER CABLE, FLEXIBLE FLAT CABLE 250mm 1 CONNECTS SERVO PCB TO LASER
BLOCK ON THE CD MECH
Note, resistors, capacitors and other 'generic' electronic components are not usually stocked by the manufacturer. Please obtain these locally. 7

AP Part No. DRAWING
NO
DESCRIPTION QTY COMMENTS
AP13618/1 5 WAY TRAY MOTOR CABLE FLAT WIRE STYLE 350mm 1 CONNECTS THE SERVO PCB TO
THE CD MECH, RUNS UNDER THE
FRONT OF THE MECH AND UNDER
THE SERVO PCB
AP13619/1 6 WAY SPINDLE MOTOR CABLE 200mm 1 CONNECTS THE SERVO PCB TO
THE CD MECH, RUNS UNDER THE
CD MECH
AP10616/6 SERVO PCB SHIELDING CAN 1 SCREENED WITH ARTWORK
AP13721/1 POSITION OVER SEVRO
PCB AND SOLDER FIX
AP10001/2 CAMBRIDGE AUDIO SCREENING CAN 1 POSITION OVER DAC PCB AND
SOLDER FIX
AP13625/1 2 WAY MUTE CABLE, FLAT WIRE STYLE CABLE 300mm 1 CONNECTS DAC PCB TO THE
SERVO PCB
AP13626/1 3 WAY SHIELDED DIGITAL OUT CABLE 130mm 1 CONNECTS DAC PCB TO THE
SERVO PCB
AP13627/1 5 WAY SHIELDED DIGITAL OUT CABLE 120mm CONNECTS DAC PCB TO THE
SERVO PCB
AP13628/1 2 WAY SHIELDED MASTER CLOCK CABLE 160mm 1 CONNECTS DAC PCB TO THE
SERVO PCB
M2.6 X 6 POZI PAN MACHINE SCREW 5 TO AFFIX BOTTOM PANEL TO SIDE,
FRONT AND REAR PANELS
M2.6 X 10 POZI PAN PLASTITE 4 FIX CORNERS OF BOTTOM PANEL
TO PLASTIC INSERTS
SIDE PANEL ASSEMBLY 2
AP12725/1 CAMBRIDGE AUDIO NEW RANGE PRESSED SIDE PANEL (2 RIDGE) (SILVER) 2 POSITION IN PLACE ON PLASTIC
FRONT INSERTS
AP12727/1 CAMBRIDGE AUDIO NEW RANGE FRONT PLASTIC SUPPORT (2 RIDGE WITH
CAPTIVE M2.6 NUTS)
2 POSITION AT FRONT WITHIN SIDE
PANELS
AP12728/1 CAMBRIDGE AUDIO NEW RANGE REAR PLASTIC SUPPORT (2 RIDGE WITH
CAPTIVE M2.6 NUTS)
2 POSITON AT REAR WITHIN SIDE
PANELS
M2.6 X 10 C/S POZI PLASTITE 8 TO AFFIX SIDE PANELS TO PLASTIC
INSERTS
D640C REAR PANEL ASSEMBLY 1
AP13435/2 CAMBRIDGE AUDIO NEW RANGE CD REAR PANEL PRINTED 1 SCREENED WITH ARTWORK
AP13669/1, THEN POSITION ON
REAR PLASTIC SUPPORTS
M3 X 10 POZI PAN PLASTITE 4 TO AFFIX REAR PANEL TO REAR
PLASTIC INSERTS
M3 X 8 POZI PAN PLASTITE 3 TO FIX DAC PCB ELECTRONIC
PARTS TO REAR PANEL
M3 X 10 POZI PAN MACHINE SCREW 2 FIXES THE IEC SOCKET MOUNTED
ON THE POWER BOARD TO THE
REAR PANEL
M3 NUT STANDARD 2 USED TO FIX ABOVE BOLTS
M3 LOCK WASHER 2 USED TO FIX ABOVE BOLTS
AP13340/1 A600 LIDDING TAPE FOR FRONT AND REAR PANELS 2 FIX TO THE CORRECT SURFACES
FOR LID
AP13342/1 A600 LIDDING TAPE FOR SIDE PANELS 2 FIX TO THE CORRECT SURFACES
FOR LID
PY574 AP12733/2 CAMBRIDGE AUDIO NEW RANGE TOP PANEL WITHOUT VENTS (SILVER) 1 POSITIONON TOP OF THE
PRODUCT
PY516 M2.6 X 6 C/S TORX MACHINE SCREW (SILVER) 8 TO AFFIX TOP PANEL TO PLASTIC
INSERTS, SIDE, REAR AND FRONT
PANEL
Note, resistors, capacitors and other 'generic' electronic components are not usually stocked by the manufacturer. Please obtain these locally. 8

Cambridge Audio Azur 640C CD Player
AP12992/3 Front Panel PCB Schematic
SW1
PLAY/PAUSE
SW2
STOP
SW3
OPEN/CLOSE
1
2
CN1
CONN-H2
SEG11
16
SEG10
15
SEG9
14
SEG8
13
SEG7
12
SEG6
11
SEG5
10
SEG4
9
SEG3
8
SEG2
7
SEG1
6
SEG0
5
COM3
4
COM2
3
COM1
2
COM0
1
SEG12
17 SEG13
18 SEG14
19 SEG15
20 SEG16
21 SEG17
22 SEG18
23
LCD1
LCD
PACKAGE=LCD D600
1
2
3
4
5
6
7
8
CN2
CONN-H8
1
2
3
4
5
6
7
8
CN3
CONN-H8
1
2
3
4
5
6
7
CN4
CONN-H7
R3
27K
R4
33K
R5
2K7
R6
10K
R7
82K
R8
1K5
R9
82K
C1
100n
+5V
C2
1000p
C3
1000p
R10
68K
R11
3K3
+5V
FORWARD SKIP FORWARD SEARCH
BACKWARD SKIP BACKWARD SEARCH
SW4
SW-TACT
SW5
SW-TACT
+5V
3
OPT
1
GND
2
U2
TSOP18 IR RECEI
C4
100n
R15
330R
VSS 14
RB2 11
RC4
6
RC2 8 RC3
7
RB1 12 RB4/OSC2/CLKOUT
3RB0 13
VDD
1
RB5/OSC1/CLKIN
2
RB3/MCLR/VPP
4
RC5/TOCKI
5
RC1 9
RC0 10
U3
16C505
SW6
SW-TACT
P1
PAD
P2
PAD
PGND
R12
4K7
R13
10K
Q2
BC327
+5V
1
2
3
CN5
CONN-H3
D2
LED
Standby
1
2
3
CN6
CONN-H3
1
2
3
4
5
6
7
CN7
CONN-H7
C6
10uF 10V
R14
820R
Q1
BC337
R2
1K8
R16
33R
D1
1N4148
D3
1N4148
K1
K2
+5V
PWR DET
RESET
R1
820R
86-756-8687998
To enhance viewing, please print to A3. 9

Cambridge Audio Azur 640C CD Player
AP12992/3 Front Panel PCB Layout (Top Side)
86-756-8687998
To enhance viewing, please print to A3. 10

Cambridge Audio Azur 640C CD Player
AP12992/3 Front Panel PCB Layout (Bottom Side)
86-756-8687998
To enhance viewing, please print to A3. 11

AP13752/3
AP Part No. DRAWING
NO
DESCRIPTION QTY DESIGNATOR COMMENTS
AP12993/3 CONTROL/FRONT PANEL PCB ASSEMBLY (FRONT PANEL SWITCH
PCB) SNAP OFF
1 BLUE WITH WHITE
IDENT
33R 0.25W 1% METAL FILM RESISTOR 1 R16
330R 0.25W 1% METAL FILM RESISTOR 1 R15
820R 0.25W 1% METAL FILM RESISTOR 1 R1
1K5 0.25W 1% METAL FILM RESISTOR 1 R8
1K8 0.25W 1% METAL FILM RESISTOR 1 R2
2K7 0.25W 1% METAL FILM RESISTOR 1 R5
3K3 0.25W 1% METAL FILM RESISTOR 1 R11
10K 0.25W 1% METAL FILM RESISTOR 2 R6,R13
4K7 0.25W 1% METAL FILM RESISTOR 1 R12
27K 0.25W 1% METAL FILM RESISTOR 1 R3
33K 0.25W 1% METAL FILM RESISTOR 1 R4
68K 0.25W 1% METAL FILM RESISTOR 1 R10
82K 0.25W 1% METAL FILM RESISTOR 2 R7,R9
1000p CERAMIC 50/100V 5mm PITCH CAPACITOR 2 C2,C3
100n CERAMIC 50/100V 5mm PITCH CAPACITOR 1 C1,C4
10uF 10V ELECTROLYTIC CAPACITOR 2.5mm PITCH 1 C6
PY054 TSOP18 IR RECEIVER 1 U2
PY605 16C505 (MICROCHIP) 1 U3 PROGRAMED WITH
AP13762/1
PY214 BC337 1 Q1
PY219 BC327 1 Q2
1N4148 2 D1,D3
TACTILE SWITCH 5 SW1,SW2, SW3,
SW4,SW5
AS PER D500SE
2way JST type connector 90deg 2mm 1 CN1
8way JST type connector 90deg 2mm 2 CN2,CN3
7way JST type connector 90deg 2mm 2 CN4,CN7
3way JST type connector 90deg 2mm 1 CN5
AP13344/1 CAMBRIDGE AUDIO NEW RANGE BACKLIGHT AND LCD PLASTIC
HOLDER
1 LCD1
CONTROL PCB ASSEMBLY (FRONT PANEL SWITCH PCB) FIXES ONTO THE L/H
SUB PANEL WITH M3
M/C SCREWS
AP12993/3 CONTROL/FRONT PANEL PCB ASSEMBLY (POWER SWITCH) SNAP
OFF
BLUE WITH WHITE
IDENT
820R 0.25W 1% METAL FILM RESISTOR 1 R14
PY064FLAT TOP BLUE LED 1 D2
TACTILE SWITCH 1 SW6 AS PER D500SE
3way JST type connector 90deg 2mm 1 CN6
DISPLAY ASSEMBLY
AP13344/1 CAMBRIDGE AUDIO NEW RANGE BACKLIGHT AND LCD PLASTIC
HOLDER
1 USE AS DISPLAY
ASSEMBLY REFERENCE
YANION BACKLIGHT PCB WITH TWO WHITE LEDS (JAPANESE) 1 POSITION WITHIN THE
BACKLIGHT
AP13343/2 CAMBRIDGE AUDIO NEW RANGE BACKLIGHT WITH SILVER STRIPS 1 POSITION IN PLACE
WITHIN THE
UNDERSIDE OF THE
PLASTIC HOLDER
AP14277/1 Backlight Correction Sheet Mechanical Details 1 Artwork AP14278/1
Cambridge Azur 640C CD Player (Front Panel BOM Silver Unit)
Note, resistors, capacitors and other 'generic' electronic components are not usually stocked by the manufacturer. Please obtain these locally. 12

AP Part No. DRAWING
NO
DESCRIPTION QTY DESIGNATOR COMMENTS
AP13438/1 CAMBRIDGE AUDIO NEW RANGE CD DISPLAY SPACER PAD 1 POSITION UNDER THE
BACKLIGHT WITHIN
THE PLASTIC HOLDER
PY562 AP13337/2 CAMBRIDGE AUDIO NEW RANGE CD LCD POSITIVE 1 POSITION ON THE TOP
LEDGE WITHIN THE
PLASTIC HOLDER AND
FEED PINS THROUGH
RELEVENT HOLES ON
THE FRONT PANEL PCB
M3 X 8 POZI PAN PLASTITE 2 TO FIX DISPLAY
ASSEMBLY TO THE
FRONT PANEL PCB
CONTROL/FRONT PANEL PCB ASSEMBLY (FRONT PANEL SWITCH
PCB)
1 FIXES ONTO THE R/H
SUB PANEL WITH M3
M/C SCREWS
M3 X 6 POZI PAN MACHINE SCREW 11 USED FOR FIXING THE
FRONT PANEL PCB'S
TO THE SUBPLATE
STANDOFF'S
AP13620/1 8 WAY LCD CABLE, FLAT WIRE STYLE 280mm 2 CONNECTS THE
FRONT PANEL PCB TO
THE SERVO PCB, RUNS
AROUND THE SIDE OF
THE CASEWORK
AP13621/1 7 WAY LCD CABLE, FLAT WIRE STYLE 500mm 1 CONNECTS THE
FRONT PANEL PCB TO
THE SERVO PCB, RUNS
AROUND THE SIDE OF
THE CASEWORK
AP13622/1 7 WAY CRONTROL CABLE 520mm 1 CONNECTS THE
FRONT PANEL PCB TO
THE SERVO PCB, RUNS
UNDER THE CD MECH
THEN AROUND THE
OUTSIDE OF THE
CASEWORK
AP13623/1 3 WAY STANDBY CABLE 380mm 1 CONNECTS THE
FRONT PANEL PCB TO
THE STAND BY PCB,
RUNS UNDERNEATH
THE CD MECH
AP13624/1 2 WAY BACKLIGHT POWER CABLE 440mm 1 CONNECTS THE
FRONT PANEL PCB TO
THE SERVO PCB, RUNS
UNDER THE CD MECH
THEN AROUND THE
OUTSIDE OF THE
CASEWORK
AP13894/1 3 WAYDAC AC POWER CABLE 420mm 1 FROM POWER PCB
UNDER DAC PCB TO
DAC PCB
Note, resistors, capacitors and other 'generic' electronic components are not usually stocked by the manufacturer. Please obtain these locally. 13

Cambridge Audio Azur 640C CD Player
AP12927/9 Servo PCB Schematic
SEG14
77
SEG15
76
SEG16
75
SEG17
74
SEG18
73
NC
72
NC
71
NC
70
NC
69
NC
68
NC
67
NC
66
NC
65
NC
64
NC
63
NC
62
NC
61
NC
60
NC
59
NC
58
NC
57
NC
56
NC
55
NC
54
NC
53
FL/TL
52
VDD
51
SEG13
78
SEG12
79
SEG11
80
SEG10
81
SEG9
82
SEG8
83
SEG7
84
SEG6
85
SEG5
86
SEG4
87
SEG3
88
SEG2
89
SEG1
90
SEG0
91
COM3
92
COM2
93
COM1
94
COM0
95
VLC
96
NC
97
NC
98
NC
99
VDD
100
VSS
50
(BOOT)
49
VAREF
48
AD K1
47
AD K2
46
AD K3
45
PWRDET
44
NC
43
NC
42
OLT
41
CLT
40
SLT
39
D-OPEN
38
D-CLOSE
37
BUS3
36
BUS2
35
BUS1
34
BUS0
33
BUCK
32
CEE
31
VSSS
1
XOUT
2
XIN
3
RESET
4
NC
5
NC
6
TEST
7
NC
8
REMOTE
9
MUTE
10
NC
11
NC
12
NC
13
SCK2
14
(SI2)
15
(SO2)
16
(WAIT)
17
NC
18
NC
19
NC
20
NC
21
NC
22
NC
23
NC
24
NC
25
NC
26
NC
27
NC
28
CORW
29
RES
30
U3
TOSHCDMCU
1
2
3
4
5
6
7
CN6
LCD
1
2
3
4
5
6
7
8
CN5
LCD
1
2
3
4
5
6
7
8
CN4
LCD
R22
NC
R21
1K
+5V
C83
470uF 16V
C85
100uF 16V
+5V
+5VDD
C84
220uF 16V
Q13
9014C
X2
CRYSTAL
7.3728MHz
C81
25pF
C80
25pF
C79
100nF
R19
3K3
R18
10K
D9
1N4148
R20
1K
1
2
3
4
5
6
7
8
CN3
PROGRAMMING
R65
10K
R66 2K2
R17 10K
+5V
R27
10K
+5V
+5VDD
XVSS
77
VDD4
76
PXO
75
PXI
74
VSS4
73
TESIO1
72
TESIN
71
DACT
70
CKSE
69
DMOUT
68
IO3
67
IO2
66
IO1
65
IO0
64
VSS3
63
VDD3
62
FLGD
61
FLGC
60
FLGB
59
FLGA
58
SEL
57
2VREF
56
DMO
55
TEBC2
54
TEBC1
53
TEBC0
52
RFGC
51
XI
78
XO
79
XVDD
80
DVSR
81
RO
82
DVDD
83
DVR
84
LO
85
DVSL
86
TEST1
87
TEST2
88
TEST3
89
BUS0
90
BUS1
91
BUS2
92
BUS3
93
VDD
94
VSS
95
BUCK
96
CCE
97
TEST4
98
TSMOD
99
RST
100
VREF
50
TRO
49
FOO
48
TEZI
47
TEI
46
TSIN
45
SBAD
44
FEI
43
RFRP
42
RFZI
41
RFCT
40
AVDD1
39
RFI
38
SLCO
37
AVSS1
36
VCOF
35
VCOREF
34
PVREF
33
LPFO
32
LPFN
31
TEST0
1
HSO
2
UHSO
3
EMPH
4
LRCK
5
VSS1
6
BCK
7
AOUT
8
DOUT
9
MBOV
10
IPF
11
SBOK
12
CLCK
13
VDD1
14
VSS2
15
DATA
16
SFSY
17
SBSY
18
SPCK
18
SPDA
20
COFS
21
MONIT
22
VDD2
23
TESIO0
24
P2VREF
25
HSSW
26
ZDET
27
PDO
28
TMAXS
29
TMAX
30
U2
TC9462F
VCC
1
RFGC
2
GMAD
3
FNI
4
FPI
5
TNI
7
MDI
8
LDO
9
SEL
10
TEB
11
2VRO
12
TEN
13
TEO
14
SBAD
15
FEO
16
FEN
17
SEB
18
VRO
19
RFRP
20
BTC
21
RFCT
22
PKC
23
RFRPIN
24
RFGO
25
GVSW
26
AGCIN
27
RFO
28
GND
29
RFN2
30
TPI
6
U1
TA2153FN
PWGND
1
OUT(-)1
2
PVCC1
3
OUT(+)1
4
VIN1
5
VRI
6
VCI
7
VIN2
8
OUT(+)2
9
PVCC2
10
OUT(-)2
11
PWGND
12
PWGND
13
OUT(-)3
14
PVCC3
15
OUT(+)3
16
VIN3
17
S GND
18
S VCC
19
VIN4
20
OUT(+)4
21
PVCC4
22
OUT(-)4
23
PWGND
24
U6
TA2092N
R15 10K
R39
10K
R14 10K R13 10K R12 10K
+5V
R11 10K
R6
220K
R7 68K
R5 15K R9 47K
C8
0.015uF
C76
47pF
C74 47uF 16V
R8 10K
C75 0.01uF C6 0.0027uF
1
2
3
CN1
DIGITAL OUT
+5V
R10 47R
C11
0.047uF
C10
47uF 16V
C9
47uF 16V
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
CN16
MECH
1
2
3
4
5
6
CN15
MOTORDRIVE
+8V
C56
220uF 16V
C59 100nF
R64
10K
+5V
C58
100nF
C57
100nF
R42
3K3
C27 0.047uF
C26 0.047uF
R41
3K3
C60
0.047uF
C61
100nF
C14 22uF 16V C28 47uF 16V C31 2200pF C30 2200pF
R38 10K
R37 10K
R40 10R 1/4W
NC
NC
NC
NC
NC
R36
100K
R35
100K
X1
CRYSTAL
16.9344MHz
C17 15pF
C16 15pF
C15
0.047uF
NC
C19
0.047uF
C18 47uF 16V
NC NC NC NC NC NC NC NC NC NC NC NC
R43
3K3
R45
3K3
C24 470pF
C25 470pF
R44 10K
C62
100nF
R60
1K
R59
82K
L1
47uH
C66
0.047uF
C65
47uF 16V
C20
47uF 16V
C67
100nF
C64 100nF
C68
100nF
R58 100R
R56 5K1
R55 5K1
R54 5K1
R53 5K1
R52 33K
R51 47K
R50 47K
R49 47K
R48 47K
R57 33K
L2
100uH
Q1
9015
R62
10R
C69 10uF 16V
R46 3K3
R47 3K3
C23
0.047uF
C22 0.047uF
R63
100K
R1
2K2
C1
5pF
R3
1K
C73
56pF
R2
15K
R4 220R
C2 100nF
C72 0.22uF
C3 0.22uF
C4 100nF
R61 47K
C71 100nF
C7
0.0047uF
C5
0.047uF
C77
47uF 16V
C78
47uF 16V
C70
47uF 16V
NC
D8
1N4148
NC NC NC NC NC NC NC NC NC NC NC NC NC NC
C13 0.047uF
C12 1uF 16V
C29 47uF 16V
R16
10K
1
2
3
4
5
CN8
DRAW DRIVE
R31
10K
R30
10K
+5V
Q12
8050
Q7
8050
Q9
8550
Q10
8550
R33
470R
R34
470R
R67
27R 1W
+8V
R28
10K
R29
10K
+5V+5V
NC
NC
NC NC NC NC NC NC NC NC NC NC NC NC NC NC NC NC NC NC NC NC
NC
NC
NC
NC NC NC
C86
100nF
L3
100uH
R26 10K R25 1K R23 10K R24 10K
R32
4K7
REMOTE
REMOTE
LK1
LINK
OPEN = F/L
SHORT = T/L
+5VCC
NC NC NC NC NC NC NC NC NC NC NC NC NC NC
1
2
3
4
5
CN12
AUDIO OUT
1
2
3
4
5
CN2
DATA OUT
EMPH
BCK
PCMD
LRCK
GND
1
2
CN17
XTALI
OSC
GND
SET LCD CONTRAST
+5V
RESET
BOOT
GND
WAIT
SCK2
SI2
SO2
REMOTE
+5V
GND
K1
K2
C21
0.047uF
OLT
GND
CLT
OPEN
CLOSE
GND
ROUT
LOUT
MUTE1
MUTE
+5V
GND
D-OUT
FC-
TR-
TR+
FC+
PD
VR
LD
GND
F
C
B
A
D
E
VCC
VC
SLT-
SLT+
FM+
FM-
DM-
DM+
SEG18
SEG17
SEG16
SEG15
SEG14
SEG13
SEG12
SEG11
SEG10
SEG9
SEG8
SEG7
SEG6
SEG5
SEG4
SEG3
SEG2
SEG1
SEG0
COM0
COM1
COM2
COM3
SANYO MECH SONY MECH
R30 10K
R54
R38
R43
R36
33K
56K
56K
10K
R37 10K
R38
R39 10K
10K
R3K3
R52
C47 1pF
12K
R30 *
R54 *
R38 *
R43 *
R36 *
R37 *
R38 *
R39 *
R *
R52 *
C47 * 5pF
3K3
47K
33K
33K
5K1
5K1
5K1
5K1
NC
15K
L4 100uH
L5
100uH
C82
10uF 16V
1
2
CN18
XTALO
GND
C87
1nF
1
2
CN20
MUTE
1
2
3
4
5
6
7
CN7
CONTROLKEYS
D10
1N4148
D11
1N4148
R76
4K7
Q8
8050 Q11
8050
PWR DET
RESET
86-756-8687998
To enhance viewing, please print to A3. 14

Cambridge Audio Azur 640C CD Player
AP12927/9 Servo PCB Schematic (Power Supply)
FU1
T2AL
VI
1VO 3
GND
2
U8
7805
C45
100nF
C44
100nF C46
470uF 16V
+5V
1
2
CN19
AC IN
D5 IN4004 D4 IN4004
D2 IN4004 D3 IN4004
C49
100nF
C50
3300uF 25V
C54
100nF
VI
1VO 3
GND
2
U7
7808
C48
100nF
C53
100nF
C51
100nF
C52
100nF
C47
470uF 16V
+8V
14.5V
SDATA
1
DEM/SCL
2
LRCK
3
MCLK
4
AOUTL 8
VA+ 7
AGND 6
AOUTR 5
U5
CS4333/38
C41
0.1uF
C40
10uF 25V
C39
10uF 25V
C32
10uF 25V
R75 15K
R82 15K R80 12K
R74 12K
C42
390pF
C38
390pF
3
2
1
8
4
U4:A
NJM2100
FOR 340C PLEASE USE TS922IN
5
6
7
U4:B
NJM2100
FOR 340C PLEASE USE TS922IN
R73 47K
C33
10pF
C34
100uF 16V
1
2
3
CN9
GND
R71
47K
C43
100uF 16V
R70
47K
C35
0.1uF
+5V
L.CH
R.CH
+8V
R81 47K
C36
10pF
R79 15K
R72 15K
C37
220uF 16V 1
2
3
CN10
GND
L.CH
R.CH
GND
1
2
3
4
5
CN13
DIG DATA
1
2
CN14
MCLK
R68
47R
R69
47R
3
4
5
RL1:B
1
2
RL1:A
6
7
8RL1:C
R83
120R 0.5W
R88
1K
14.5V
Q3
8050
Q4
8050
C55
47uF 16V
R89
330k
D1
IN4148
R90
390R
D7
IN4004
R87
100R
Q6
9012
R85
560R
R86
3K9
C63
4.7uF 16V
D6
IN4004
1
2
3
4
5
CN11
AUDIO OUT
GND
ROUT
LOUT
MUTE1
MUTE
AC
AC
R84
4K7
Q5
9012
C88
1nF
1
2
CN21
FP DIS
86-756-8687998
To enhance viewing, please print to A3. 15

Cambridge Audio Azur 640C CD Player
AP12927/7 Servo PCB Layout (Top Side)
86-756-8687998
To enhance viewing, please print to A3. 16

Cambridge Audio Azur 640C CD Player
AP12927/7 Servo PCB Layout (Bottom Side)
86-756-8687998
To enhance viewing, please print to A3. 17

AP13752/3
AP Part No. DRAWING NO DESCRIPTION QTY DESIGNATOR COMMENTS
AP12928/6 SERVO PCB ASSEMBLY 1 Blue with white ident
10R 0.125W METAL FILM RESISTOR 1 R62
10R 0.25W METAL FILM RESISTOR 1 R40
27R 1W CARBON RESISTOR 1 R67
47R 0.125W METAL FILM RESISTOR 1 R10
100R 0.125W METAL FILM RESISTOR 1 R58
220R 0.125W METAL FILM RESISTOR 1 R4
470R 0.125W METAL FILM RESISTOR 2 R33, R34
1K 0.125W METAL FILM RESISTOR 5 R3,R20,R21,R25,R60
2K2 0.125W METAL FILM RESISTOR 2 R1, R66
3k3 0.125W METAL FILM RESISTOR 7 R19, R41, R42, R43, R45, R46,
R47
4K7 0.125W METAL FILM RESISTOR 1 R32, R76
5K1 0.125W METAL FILM RESISTOR 4 R53, R54, R55, R56
10K 0.125W METAL FILM RESISTOR 21 R8, R11, R12, R13, R14, R15,
R16, R17, R18, R23, R24, R26,
R27, R28, R29, R30, R31, R39,
R44, R64, R65
15K 0.125W METAL FILM RESISTOR 2 R2, R5
33K 0.125W METAL FILM RESISTOR 2 R52, R57
47K 0.125W METAL FILM RESISTOR 6 R9, R48, R49, R50, R51, R61
68K 0.125W METAL FILM RESISTOR 1 R7
82K 0.125W METAL FILM RESISTOR 1 R59
100K 0.125W METAL FILM RESISTOR 1 R63
220K 0.125W METAL FILM RESISTOR 1 R6
5p CERAMIC COG 50/100V 5mm PITCH CAPACITOR 1 C1
15p CERAMIC COG 50/100V 5mm PITCH CAPACITOR 2 C16, C17
25p CERAMIC COG 50/100V 5mm PITCH CAPACITOR 2 C80, C81
47p CERAMIC COG 50/100V 5mm PITCH CAPACITOR 1 C76
56p CERAMIC COG 50/100V 5mm PITCH CAPACITOR 1 C73
470p CERAMIC 50/100V 5mm PITCH CAPACITOR 2 C24, C25
1n0 CERAMIC 50/100V 5mm PITCH CAPACITOR 1 C87
2n7 MYLAR 5mm PITCH CAPACITOR 1 C6
4n7 MYLAR 5mm PITCH CAPACITOR 2 C7,C21
10n CERAMIC 50/100V 5mm PITCH CAPACITOR 1 C75
15n CERAMIC 50/100V 5mm PITCH CAPACITOR 1 C8
47n CERAMIC 50/100V 5mm PITCH CAPACITOR 11 C5, C11, C13, C15, C19, C22,
C23, C26, C27, C60, C66
100n CERAMIC 50/100V 5mm PITCH CAPACITOR 21 C2, C4, C44, C45, C48, C49,
C51, C52, C53, C54, C57, C58,
C59, C61, C62, C64, C67, C68,
C71, C79, C86
220n CERAMIC 50/100V 5mm PITCH CAPACITOR 2 C3, C72
1u 16V ELECTROLYTIC CAPACITOR 1 C12
Cambridge Azur 640C CD Player (Servo BOM)
Note, resistors, capacitors and other 'generic' electronic components are not usually stocked by the manufacturer. Please obtain these locally. 18

AP Part No. DRAWING NO DESCRIPTION QTY DESIGNATOR COMMENTS
10u 16V ELECTROLYTIC CAPACITOR 2 C69, C82
22u 16V ELECTROLYTIC CAPACITOR 1 C14
47u 16V ELECTROLYTIC CAPACITOR 11 C9, C10, C18, C20, C28, C29,
C65, C70, C74, C77, C78
100u 16V ELECTROLYTIC CAPACITOR 1 C85
220u 16V ELECTROLYTIC CAPACITOR 2 C56, C84
470u 16V ELECTROLYTIC CAPACITOR 3 C46, C47, C83
3300u 25V ELECTROLYTIC CAPACITOR 1 C50
CRYSTAL 16.9344MHz 2 PIN 5mm PITCH 1 X1
PY561 CRYSTAL 7.3728MHz 2 PIN 5mm PITCH 1 X2
PY474 TA2153FN (TOSHIBA RF Amplifier) 1 U1
PY475 TC9462F (TOSHIBA Digital Servo-chip Processor) 1 U2
PY565 I.C. MCU TMP87EP26F-1J15 SOP TOSHIBA 1U3
PY473 TA2092N (TOSHIBA Power driver IC) 1 U6
7808 (TO-220 +8V Regulator) 1 U7
7805 (TO-220 +5V Regulator) 1 U8
PY560 9015 1 Q1
PY014 8050 (TRANSISTOR NPN C8050) 4 Q7, Q8, Q11, Q12
PY559 8550 (TRANSISTOR PNP C8550) 2 Q9, Q10
PY558 9014C (TRANSISTOR NPN 9014C) 1 Q13
DIODE 1N4148 2 D8, D9, D10, D11
DIODE ,IN4004 3 D2, D3, D4, D5
2 Way, 2mm Pitch JST Type connector (XIN X1, UNREG
OUT X1, MUTE X1)
3 CN17, CN20, CN21
3 Way, 2mm Pitch JST Type connector (DIGITAL OUT
X1)
1 CN1
5 Way, 2mm Pitch JST Type connector (DATA OUT X1,
Draw drive X1) .
2 CN2, CN8
6 Way, 2mm Pitch JST Type connector (MOTOR DRIVE) 1 CN15
7 Way, 2mm Pitch JST Type connector (LCD X1, F/P
CONTROLS)
2 CN6, CN7
8 Way, 2mm Pitch JST Type connector
(PROGRAMMING X1, LCD X2)
3 CN3, CN4, CN5
2 Way, 2.5mm 2mm Pitch JST Type connector (AC IN) 1 CN19
CONNECTOR FFC 16-WAY 1.0mm PITCH (MECH) 1 CN16
FUSE HOLDER 20mm 1 FU1
2A 1 FU1
47uH (8mm pitch) 1 L1
100uH (8mm pitch) 4 L2, L3, L4, L5
HEATSINK FOR U7 & U8 2 (U7, U8)
M3 X 6 TAPTITE POZI PAN MACHINE SCREW 4 TO FIT HEATSINK TO PCB
(X2) TO FIT U7 & U8 TO
HEATSINK (X2)
Note, resistors, capacitors and other 'generic' electronic components are not usually stocked by the manufacturer. Please obtain these locally. 19

Cambridge Azur 540C CD Player
AP13111/5 DAC PCB Schematic
AC2
AC1
DIN
D.GND
GND
MCLK_OUT
D.GND
VCC 8
CLK 5
N/C
1
GND
4
X1
OSC DIL08
FREQ=16.9344MHz
1 2
U10:A
74HC14
3 4
U10:B 74HC14
VD2
GND
D1
1N4002
D4
1N4002
D2
1N4002
D3
1N4002
VI
1VO 3
GND
2
U4
7815 VA1
VA2
VI
1VO 3
GND
2
U8
7805
C46
47uF
VD2
1
2
3
4
5
CN6
DATA
1
2
3
CN1
POWER
C2
47uF
LEFT CHANNEL
RIGHT CHANNEL
VD1
VI
1VO 3
GND
2
U1
7805
5 6
U10:C
74HC14
VI
2VO 3
GND 1
U3
7915
1
2
3
CN2
DOUT
GND
C28
100n
R34 100R
R33 2R2
2
1
CN7:A
RCA-DV
3
CN7:B
RCA-DV
13 12
U10:D
74HC14
R31
91R
R32
430R
C27
100n
C24
2200uF
C3
2200uF
R24
22R
R25
22R
GND
R2 22R
C22
100n
SDATA
LRCK
11 10
U10:E
74HC14
9 8 U10:F
74HC14
+21V UNREG
-21V UNREG
R1
100R
CHASSIS
Q2
C8050
Q4
C8050
1
2
RL1:A
5V RELAY
C32
47uF
R27
330k
R30
2k2
D6
1N4148
+21V UNREG
R29
680R
3
4
5
RL1:B
9V RELAY
6
7
8
RL1:C
9V RELAY
1
2
CN5
MCLK_LOCK D.GND
VA1
Q1
C9012
R35
10k
R36
1k
D5
1N4002
C29
4.7uF
AC1
R26
100R
DEM
BCLK
Q3
C9012
R38
4k7
1
2
CN3
MUTE
12
3
CN4
RCA-SNG
C26
100n
GND
1
VCC
2
INPUT
3
U11
APTX179AT
R28
430R 2W
C25
100n
LRCIN
1
DIN
2
BCKIN
3
MODE8X
4
SCLK
5
DIFFHW
6
DGND
7
DVDD
8
AVDDR
9
AGNDR
10
VMIDR
11
VOUTRP
12
VOUTRN
13
AGND
14 AVDD 15
VOUTLN 16
VOUTLP 17
VMIDL 18
AGNDL 19
AVDDL 20
ZERO 21
RSTB 22
CSBIWO 23
MODE 24
MUTEB 25
MD/DM0 26
MC/DM1 27
ML/I2S 28
U7
WM8740
3
2
1
84
U6:A
NE5532
5
6
7
U6:B
NE5532
C5
10n PE
C4
10n PE
C40
1n5 ML
C38
1n5 ML
VA2
VA1
R22
4k7
R23
4k7
C43
100p PP
C37
100p PP
R20
11k
R19
11k
R16
5k6
R17
5k6
C44
2n2 PP
C41
2n2 PP
R21
2k7
R18
2k7
3
2
1
84
U5:A
NE5532
5
6
7
U5:B
NE5532
C11
1n5 ML
C8
1n5 ML
VA2
VA1
R5
4k7
R6
4k7
C14
100p PP
C9
100p PP
R4
11k
R7
11k
R10
5k6
R8
5k6
C10
2n2 PP
C12
2n2 PP
R3
2k7
R9
2k7
C16
1n5 ML
VD1
C19
1n5 ML
C18
100n
C17
1n5 ML
C20
1n5 ML
C15
1n5 ML
C35
100uF NP
C34
100uF NP
C36
2n2 PP
C33
2n2 PP
1 2
U2:A
74HC14
3 4
U2:B
74HC14
5 6
U2:C
74HC14
13 12
U2:D
74HC14
11 10
U2:E
74HC14
9 8
U2:F
74HC14
VD3
VD2
C39
47p
C7
47p
R14
2k2
R15
2k2
R11
2k2
R12 2k2
C42
2n2 PP
C13
2n2 PP
D7
1N4148
VD3
C30
47uF
VI
1VO 3
GND
2
U9
7805
GND
C31
100n
C1
10n PE
C48
10n PE
R37
1k
C45
10U 25V NP
C21
10U 25V NP
C47
10U 25V NP
C6
10U 25V NP
C23
10U 25V NP
VI
1VO 3
GND
2
U12
7805
VD4
GNDGND
VD4
86-756-8687998
To enhance viewing, please print to A3. 20