Cambridge Audio Azur 740C User manual

Gallery Court Hankey Place London SE1 4BB UK
Tel: [phone] Fax: [phone]
740C
Issue Date: 28th September 2007
________________________________________________________________________
SERVICE MANUAL
________________________________________________________________________
SPECIFICATIONS:
D/A converters Dual Wolfson
WM8740 24 bit DACs
Digital filter Analog Devices Black Fin
ADSP-BF532 32 bit DSP
Performing ATF™
Upsampling to 24 bit 384kHz
Analog filter 2 Pole Dual Differential Bessel
Double Virtual Earth Balanced
Frequency Response 20Hz to 20 kHz (+/-0.1dB)
THD @ 1kHz 0dBFs < 0.0008%
THD @ 1kHz -10dBFs < 0.0005%
THD @ 20kHz )dBFs < 0.001%
IMD (19/20kHz) 0dBFs < 0.0006%
Linearity @ -90dBFs >113dB
Total correlated jitter <130pS
Crosstalk @ 1kHz < -130dB
Crosstalk @ 20kHz < -110dB
Output impedance < 50 ohms
Digital input word widths supported 16 – 24 bit
Digital input word widths supported 16, 20, 24 bit
Digital input sampling frequencies supported 32kHz, 44.1kHz, 48kHz, 88.2kHz, 96kHz, 176.4kHz,
192kHz
Digital output sampling frequencies supported 32kHz – 192kHz pass through (including 44.1kHz for CD)
48kHz, 96kHz, 192kHz upsampled
Audio output upsampling Fixed 24 bit, 384kHz
Dimensions – H x W x D 115 x 430 x 315mm (4.5 x 16.9 x 12.4”)
Weight 6.4Kg (14.1Lbs)
AP22735/1
1
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740C SERVICE MANUAL
TABLE OF CONTENTS
Safety Precautions & Important Notes 3
Exploded Diagram 4
Exploded Diagram Parts List 5
Front Panel Circuit Diagram 6
Front Panel Board Layout (Top Side) 7
Front Panel Board Layout (Bottom Side) 8
Front Panel PCB BOM 9
Servo Circuit Diagram 10
Servo Board Layout (Top Side) 11
Servo Board Layout (Bottom Side) 12
Servo Assembly PCB BOM 13-15
DAC Circuit Diagram (Supply & Connectors) 16
DAC Circuit Diagram (SPDIF – RS232) 17
DAC Circuit Diagram (Flash Connector & Mute) 18
DAC Circuit Diagram (DSP) 19
DAC Circuit Diagram (Analogue Stage) 20
DAC Board Layout (Top Side) 21
DAC Board Layout (Bottom Side) 22
DAC Assembly PCB BOM 23-25
Mains Circuit Diagram 26
Mains Board Layout (Top Side) 27
Mains Board Layout (Bottom Side) 28
Mains PCB BOM 29
IC Pin Layout Details 30-38
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SAFETY PRECAUTIONS & IMPORTANT NOTES
1. Check that the rear of the product indicates the correct supply voltage for
your 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.
© 2007Audio Partnership PLC. All rights reserved.
Cambridge Audio and Azur are registered trademarks for Audio Partnership PLC. This document
may not be reproduced, distributed, transmitted, displayed, published, or broadcast without the
express written prior permission of Audio Partnership PLC.
Alteration or 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.
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Cambridge Audio Azur 740C CD Player
Exploded Diagram
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Cambridge Audio Azur 740C CD Player
Exploded Diagram Parts List
noitpircseDrebmuNtraPyrotcaFrebmuNtraPPAfeRgniwarD
1 PY1228 7003-008010E006 Screw M3*8 M/C torx recess ZN-PT (Silver) 2 PY1229 7003-008010E001 Screw M3*8 M/C torx recess BLK-PT (Black) 3 PY1270 6574-010009E000-02 Azur 740C Top Panel-S (With Painted) 3 PY1271 6574-010009E000-01 Azur 740C Top Panel-B (With Painted) 4 PY1032 6550-150017E001-02 Larger Side Panel Silver Painted 4 PY1033 6550-150017E001-01 Larger Side Panel Black Painted 5 PY1272 8574-001000E301 Azur-740C Silver Front Panel Assy Rev A 5 PY1273 8574-001010E301 Azur-740C Black Front Panel Assy Rev A 6 PY1274 6574-010012E002A01 Azur 740C Front Panel-S Artwork AP20101*& AP20102* 6 PY1275 6574-010012E002-01 Azur 740C Front Panel-B Artwork AP20101*& AP20102*
7 PY1276 9474-001000E041 Azur-740C Control PCB Assy Rev A 8 PY1277 9474-001000E071 Azur-740C Main Power Input PCBA Rev A 9 PY1278 9474-001000E181 Azur-740C Servo PCBA <T-Type> Rev A
10 PY1175 4006-740058E001 740C DAC Module
11 PY940 9692-006002-201 Azur V2 CD Mechanism Assy with Sanyo DA11V Rev A 12 PY941 3009-110000-002 V2 CD Sanyo Laser DA11V 13 PY1222 4006-840001E000 Azur 840C Display Module MBCF00003B00V0 14 PY1122 6074-150004E000 Azur 840A Plastic Foot (Black) 14 PY1124 6074-150004E000A01 Azur 840A Plastic Foot (Silver) 15 PY1356 3200-082661E000 Transformer AC230 (EU) TO8266A for 740C 15 PY1357 3200-082591E000 Transformer AC115/60Hz TO8259A for 740C (CU Version) 16 PY1165 9805-084000E001 Azur 840A/C 740A/C Remote Control Assy Rev A
5
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Cambridge Audio Azur 740C CD Player
AP19135/4 Front Panel Circuit Diagram
CONTROL BUS
SPI DATA RX
SPI INT SPI DATA TX
SPI CLK
SPI CS
SERIAL TX
SERIAL RX
OE1 SO1_U7
SO2_U7
SO1_U9
MUTE
C1
1n 50V X7R
C2
1n 50V X7R
1
2
3 4
5 6
7
CN1
CONN-H7
K1
K2
POWER DETECT
RESET
GND
+5V
REMOTE
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
+5V
+5V
3
OPT
1
GND
2
U1
TSOP18 IR RECEIVER
C3
100n
R1
47R
SW1
Standby
SW2
Menu
SW6
Stop
SW3
Select
SW4
Open/Close
SW5
Play/Pause
SW7
Back Skip
SW8
Forward Skip
R2 220R
LED
MCLR/VPP
1
RA0/AN0
2
RA1/AN1
3
RA2/AN2
4
RA3/AN3/VREF
5
RA4/T0CKI
6
RA5/AN4/SS
7
RE0/RD/AN5
8
RE1/WR/AN6
9
RB4 37
RB3/PGM 36
RB2 35
RB0/INT 33
VDD 32
VSS 31
RD7/PSP7 30
RD6/PSP6 29
RB1 34
RD5/PSP5 28 RD4/PSP4 27
RC7/RX/DT 26
RC5/SDO 24
RC4/SDI/SDA 23
RD3/PSP3 22 RD2/PSP2 21
RC6/TX/CK 25
VDD
11
VSS
12
OSC1/CLKIN
13
OSC2/CLKOUT
14
RCO/T1OSO/T1CKI
15
RC1/T1OSI/CCP2
16
RC2/CCP1
17
RC3/SCK/SCL
18
RD0/PSP0
19
RE2/CS/AN7
10
RD1/PSP1
20
RB5 38
RB6/PGC 39
RB7/PGD 40
U2
PIC16F874A
+5V
R3
56R
R4
56R
C4
100nF
X1
CRYSTAL
FREQ=20MHz
C5
22pF
C6
22pF
C7
10U 16V
R5
100R C8
100nF
R6 10K
+5V
VssVdd
VoRS R/W
E
D0D1 D2D3 D4D5
D6D7
LED A
LED K
C9
100nF
+5V
SERVO RESET
IR OUT
C10 100nF
+5V
LED
SERVO RESET
To Servo Board
LCD Connector 2
LCD Connector 1
From Servo Board (LCD)
+5V
R9
220R
C11 10U 16V
RESET
RESET
+5V
LCD
C12
100nF
ON/OFF
BRIGHT
BRIGHT
ON/OFF
Q1
BC337
R12
10K
Q2
BC337
R13
10K
Q3
BC337
Q4
BC337
R14
1K2
R15
10K
H0 14
A1 6
GND
8
A0 7
W0 12
L1
3L0 13
H1
1
W1
4
A2 5
SDA 10
SCL 9
VCC
16
U3
DS1803
+5V_SERVO
+5V_SERVO
1
2 3
4 5 6
7
8
9
CN6 JST 2MM S9B-PH-KS
1
2
3 4
5 6 7
8
CN7 JST 2MM S8B-PH-KS
R18 10K
R19
10K
SEG15
16
SEG14
15
SEG13
14
SEG12
13
SEG11
12
SEG10
11
SEG9
10
SEG8
9
SEG7
8
SEG6
7
SEG5
6
SEG4
5
SEG3
4
SEG2
3
SEG1
2
SEG0
1
SEG16
17 SEG17
18 SEG18 19 COM1
20 COM2 21 COM3
22 COM4 23 NC
24
CN10
LCD 740C
COM1
COM1
COM2
COM3 COM4
COM2 COM3
COM4
+5V
R20 100R
R21 100R R22 100R
R23 100R R24 100R
R25 100R
R26 100R R27 100R R28 100R R29 100R R30 100R R31 100R R32 100R
CLK SD TX
SD RX
CS
INT
RS
E
OSC1
OSC2
U7_SO1
U7_S02
U9_S01
SCL
D4
D5
D6 D7 SDA
SERIAL TX
SERIAL RX SERVO RESET RESET OE1# MUTE
IR OUT IR IN
D1 LED 3MM BLUE
C13
10U 16V
C14
100nF
1
P1
PAD EMC M3
1
P2 PAD EMC M3
1
P3
PAD EMC M3
C15 1nF
C16
1nF
C17
1nF
R10
300R
13
2
R11
PRE MULTI 500R
MCLR
4GP4
3CLKIN
2Vss 8
GP0 7
GP1 6 GP2 5
Vdd
1
U4 PIC12C508
1 2
3
4
5
CN8 DATA
1 2 3
4 5
CN9
DATA
R33 680R
R34 680R
D2
BZX79C5V1 500MW
D3
BZX79C5V1 500MW
MGND
+5V_SERVO
MGND
FIN
1
GND1
2
RIN
3
GND2
5
VCC
6
OUT2
7
COM
8
OUT1
9
U5
BA6218
MGND
+8V
1
2
3 4 5 6
1a
2a
3a
4a
5a
6a
7
8
7a 8a
CN5
CONN-8HEAD DUAL BOT
D4
1N4004
D5 1N4004
C18
10U 16V
C19
100nF
+8V
R35
100K
LED
1
P4
PAD EMC M3
1
P5
PAD EMC M3
C20
1nF
C21
1nF
C22
100nF
TO DAC BOARD CN8 (SPI)
TO DAC BOARD CN9 (RS232/MUTE/SPDIF CNTRL)
FROM SERVO BOARD DRAWER OPEN/CLOSE(SPI)
TO MECH DRAWER OPEN/CLOSE (SPI)
R7 100R
R8
10OR
R16 R METAL 1/8W 4k7
1/8W Metal Film
R17 R METAL 1/8W
4k7 1/8W Metal Film
R36
RMETAL1/4W
220R
1/4W Metal Film
R37
R METAL 1/4W 220R
1/4W Metal Film
D6 1N4004
D7 1N4004
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Cambridge Audio Azur 740C CD Player
AP19135/3 Front Panel Board Layout (Top Side)
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Cambridge Audio Azur 740C CD Player
AP19135/3 Front Panel Board Layout (Bottom Side)
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AP20712/5
AP Part no. Value Description/Type Factory PN Qty Component Ident NOTES
47R 0.25 W 1% Metal Film 1 R1
56R 0.25 W 1% Metal Film 2 R3, R4
100R 0.25 W 1% Metal Film 16 R5, R7, R8, R20-R32
220R 0.25 W 1% Metal Film 1012-201014E000 4 R2, R9, R36, R37
300R 0.25 W 1% Metal Film 1 R10
680R 0.125 W 1% Metal Film 1016-801016E020 2 R33, R34
1K2 0.25 W 1% Metal Film 1 R14
4K7 0.25 W 1% Metal Film 2 R16, R17
10k 0.25 W 1% Metal Film 6 R6, R12, R13, R15,R18, R19
100K 0.25 W 1% Metal Film 1 R35
PRE MULTI 500R Side adjust Footprint 9.5 x 4.5 mm
VR B500 OHM +-10%
WI 3296NOXOX-XA1-
013
1 R11 Mount on bottom side of PCB with
screw adjust facing upwards
22pF Ceramic NPO, Pitch = 5.0mm 2 C5, C6
1nF Ceramic 50V Pitch = 5.0mm 7 C1, C2, C15-C17, C20,C21
100nF Ceramic 50V Pitch = 5.0mm 9 C3, C4, C8-C10, C12, C14, C19, C22
10uF Miniature 16V Pitch 2.5mm Height 5.2mm 4 C7, C11, C13, C18
TSOP1836SS3V TSOP IR RECEIVER 1 U1
PIC16F877A-I/P PIC 1 U2 Programme with AP20728/4, Please add
version label
PY983 DS18030-050 DIGITAL POT 4118-030051E200 1 U3
PIC12C508A-I/P PIC 1 U4 Programme with AP20231/1, Please add
version label
PY260 BA6218 CD DRIVER IC 1 U5
PY214 BC337 NPN SMALL SIGNAL 4 Q1-Q4
LED BLUE 1 D1 HFB963M-130
5V1 ZENER BZX79C5V1 1402-511201E200 2 D2, D3
1N4004 GENERAL PURPOSE RECTIFIER 4 D4, D5, D6, D7
PY043 TACT SWITCH TACT SW 2P2T KPT-1105A (5MM) 8 SW1-SW8
20MHz CRYSTAL 20MHz, HEIGHT ABOUT 3.5MM CL20PF HC-49US 1 X1 +- 30PPM
TRANSISTORS
DIODES
MISCELLANEOUS
Cambridge Azur 740C Front Panel BOM
RESISTORS
CAPACITORS
SEMICONDUCTORS
Note: resistors, capacitors and other 'generic' electronic components are
not usually stocked by the manufacturer. Please obtain these locally.
9
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Cambridge Audio Azur 740C CD Player
AP20195/5 Servo Circuit Diagram
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
ADK1 47
ADK2 46
ADK3 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
1XOUT
2XIN
3RESET
4NC
5NC
6TEST
7NC
8REMOTE
9MUTE
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
22K
+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
1HSO
2UHSO
3EMPH
4LRCK
5VSS1
6BCK
7AOUT
8DOUT
9MBOV
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
SGND 18
SVCC 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
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
MOTOR DRIVE
+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 no stu
C30 2200pF no stu
R38 10K no stu
R37 10K no stu
R40 10R 1/4W
NC NC NC NC
NC
R36
100K no stu
R35
100K no stu
X1
CRYSTAL
16.9344MHz
C17 15pF C16 15pF
C15
0.047uF
NC
C18 47uF 16V
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
R43
10K
R45
3K3
C24 470pF
C25 470pF
R44 3K3
C62 100nF
R60 1K
R59 82K
L1
47uH
C66 0.047uF
C65 220uF 16V
C20 47uF 16V
C67 100nF
C64 100nF
C68 22uF
R58 0R
R56 10K R55 10K R54 10K R53 10K
R52 56K
R51 47K R50 47K R49 47K
R48 47K
R57 56K
L2
10uH
Q1
9015
R62 15R
C69 100uF 16V
R46 3K3
R47 3K3
C23
0.047uF
C22 0.047uF
R63 100K
R1 2K2
C1 3pF
R3
1K
C73
100pF
R2 10K
R4 220R
C2 100nF
C72 0.22uF
C3 0.22uF
C4 100nF
R61 27K
C71 100nF
C7
0.01uF
C5
0.047uF
C77
47uF 16V
C70
47uF 16V
NC
D8 1N4148
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
C12 1uF 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
14mm link(840c only)
+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 no stu
1
2
3
4 5
CN2
DATA OUT
EMPH
BCK
PCMD LRCK
GND
1
2
CN17 XTALI
OSC
GND
SETLCD CONTRAST
+5V
RESET
BOOT
GND
WAIT
SCK2
SI2
SO2
REMOTE
+5V GND K1
K2
C21 0.0047uF
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
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
J1 100R
NOTE R? IS A REPLACEMENT FOR WIRE LINK ON BOARD AP12928/7 AND WILL NEED ASSIGNING A REFDES FUTURE
R? IS 100 OHM 1% METAL FILM RESISTOR. PLACED BETWEEN C68 AND L2
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
AC
1 2
CN21 FP DIS
NO FIT FOR 740/840C
C89
10N COG CER
C90
10N COG CER
C91 100N COG
C11
47N COG
C19 100N COG
C13 100N COG
C96 10N COG C97 10N COG
C92 100N COG
R77
200R
R78
200R
1
P1
CN PAD EMC M3
1
P2 CN PAD EMC M3
1
P3 CN PAD EMC M3
1
P4
CN PAD EMC M3
R91 200R
R92
200R
1 2
3
CN22
HEADER 3WAY
P1
C93
10N COG
VCC 8
CLK 5
N/C
1
GND
4
X3 OSC DIL08
C94
C 100N 100V MCER
5V OSC
OSC MOD
OSC MOD
5V OSC
C98 100N COG
C101 100N COG
C102 220U 16V
R93 47R
LK2
LK7,5MM 24AWG
24 AWG
LK3 (NF)
TO SIGNAL GROUND
LK4
TO LK4
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Cambridge Audio Azur 740C CD Player
AP20195/5 Servo Board Layout (Top Side)
To enhance viewing, please print to A3 11
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Cambridge Audio Azur 740C CD Player
AP20195/5 Servo Board Layout (Bottom Side)
To enhance viewing, please print to A3 12
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AP20713/2
AP Part No. Value Description/Type Qty Component Ident Factory PN NOTES
10R 0.25 W Metal Film Resistor 1 R40 1011-000014-000
15R 0.125 W Metal Film Resistor 1 R62
link 14mm link 1 R67 For 840C ONLY. Use link
47R 0.125 W Metal Film Resistor 1 R10, 1014-700018-000
100R 0.125 W Metal Film Resistor 1 wirelink ( J1 ) 1011-001016-000 Wirelink is positioned between C68
and L1. This must be 100R resistor.
220R 0.125 W Metal Film Resistor 1 R4,R77,R78,R91,R92 1012-201018-000
470R 0.125 W Metal Film Resistor 2 R33, 34 1014-701016-000
1K 0.125 W Metal Film Resistor 5 R3, 20, 25, 60 1011-002018-000
2K2 0.125 W Metal Film Resistor 2 R1, 66 1012-202016-000
3K3 0.125 W Metal Film Resistor 7 R19, 41, 42, 44, 45,
46, 47 1013-302018-000
4K7 0.125 W Metal Film Resistor 2 R32, 76 1014-702016-000
10K 0.125 W Metal Film Resistor 26
R2, 8, 11, 12, 13, 14,
15, 16, 17, 18, 26,
27, 28, 29, 30, 31,
39, 43, 53, 54, 55,
56, 64, 65
1011-003016-000
15K 0.125 W Metal Film Resistor 1 R5, 1011-503018-000
22K 0.125 W Metal Film Resistor 1 R21
27K 0.125 W Metal Film Resistor 1 R61
47K 0.125 W Metal Film Resistor 5 R9, 48, 49, 50, 51 1014-703016-000
56K 0.125 W Metal Film Resistor 2 R52, 57
68K 0.125 W Metal Film Resistor 2 R7, 1016-803018-000
82K 0.125 W Metal Film Resistor 1 R59 1018-203018-000
100K 0.125 W Metal Film Resistor 1 R63 1011-004016-000
220K 0.125 W Metal Film Resistor 1 R6 1012-204016-000
3pF Ceramic COG 50V 5mm Pitch 1 C1
25pF Ceramic COG 50V 5mm Pitch 2 C80, 81 1100-250042-000
47pF Ceramic COG 50V 5mm Pitch 1 C76 1100-470043-000
100pF Ceramic COG 50V 5mm Pitch 1 C73
470pF Ceramic 50V 5mm Pitch 2 C24, 25 1100-471043-000
1nF Ceramic 50V 5mm Pitch 3C87, C93, C96 1100-102043-000
RESISTORS
CAPACITORS
Cambridge Azur 740C Servo PCB Assembly BOM
Note: resistors, capacitors and other 'generic' electronic components are
not usually stocked by the manufacturer. Please obtain these locally.
13
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AP20713/2
AP Part No. Value Description/Type Qty Component Ident Factory PN NOTES
Cambridge Azur 740C Servo PCB Assembly BOM
10nF Ceramic 50V 5mm Pitch 1 C75 1100-103043-000
10nF Mylar 5mm Pitch 1 C7
15nF Ceramic 50V 5mm Pitch 1 C8 1100-153043-000
47nF Ceramic 50V 5mm Pitch 11 C5, 11, 13, 15, 19,
22, 23, 26, 27, 60, 66 1100-473044-000
100nF Ceramic 50V 5mm Pitch 24
C2, 4, 44, 45, 48,
49, 51, 52, 53, 54,
57, 58, 59, 61, 62,
64, 67, 71, 79, 86,
91, 94, 98, 101
1106-104044-000
220nF Ceramic 50V 5mm Pitch 2 C3, 72 1100-224044-000
2n7 Mylar 5mm Pitch 1 C6 1101-272063-000
4n7 Mylar 5mm Pitch 1 C21 1101-472062-000
1uF 16V Electrolytic 1 C12 1102-107044-000
10uF 16V Electrolytic 1 C82 1102-100024-000
22uF 16V Electrolytic 2 C14, 68 1102-220014-000
47uF 16V Electrolytic 10 C9, 10, 18, 20, 28,
29, 70, 74, 77, 78 1102-470014-000
100uF 16V Electrolytic 2 C69, 85 1102-101014-000
220uF 16V Electrolytic 3 C56, 65, 84 1102-221014-000
470uF 16V Electrolytic 3 C46, 47, 83 1102-471014-000
3300uF 25V Electrolytic 1 C50 1102-332024-000
PY474 TA2153FN TOSHIBA RF Amplifier 1 U1 4121-530103-000
PY475 TC9462FG TOSHIBA Digital Servo-chip
Processor 1 U2 4194-620123-000
PY565 TOSHCDMCU MCU TMP87EP26F-1J15 SOP
TOSHIBH 1 U3 4187-260103-000
PY473 TA2092N TOSHIBA Power driver IC 1 U6 4120-920053-000
7808 TO-220 +8V Regulator 1 U7 4178-080302-600
7805 TO-220 +5V Regulator 1 U8 4178-050334-700
PY014 C8050D NPN Transistor TO92 4 Q7, 8, 11, 12 1300-805000-100
PY558 9014C NPN Transistor 1 Q13 1300-901400-100
PY559 C8550 PNP Transistor 2 Q9, 10 1301-855000-100
PY560 9015C PNP Transistor 1 Q1 1301-901500-100
1N4148 Signal Diode 3 D9, 10, 11 1401-141480-000
SEMICONDUCTORS
Note: resistors, capacitors and other 'generic' electronic components are
not usually stocked by the manufacturer. Please obtain these locally.
14
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AP20713/2
AP Part No. Value Description/Type Qty Component Ident Factory PN NOTES
Cambridge Azur 740C Servo PCB Assembly BOM
1N4004 Rectifier Diode 4 D2, 3, 4, 5 1401-140040-000
PY561 7.3728MHz 2 Pin 5mm Pitch 1 X2 1600-737282-990
PY027 16.934MHz XTAL Oscillator module, 4 pin 1 X3 1600-169343-602 Half size 50ppm as per used on
540/640C
20mm PCB Mount Fuse Holder 1 FU1 4031-050100-001
T2AL 2A delay 20mm Fuse 250V LBC (low
breaking capacity) 1 FU1 4030-618002-001
CRYSTALS
MISCELLANEOUS
Note: resistors, capacitors and other 'generic' electronic components are
not usually stocked by the manufacturer. Please obtain these locally.
15
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Cambridge Audio Azur 740C CD Player
AP20020/6 DAC Circuit Diagram (Supply & Connectors)
D7
SB1H100
D8
SB1H100
D9 SB1H100
D10
SB1H100
+21V UNREG
-21V UNREG
C59
100N 100V
C60
100N 100V C61 33N 250V
SCHOTTKY RECTIFIER
D3
SB1H100
D4
SB1H100
D5
SB1H100
D6 SB1H100
+10V UNREG
C44
100N 100V
SCHOTTKY RECTIFIER
VI
1VO 3
GND
2
U14
7815
VI
2VO 3
GND 1
U16
7915
+15V
-15V
VI
1VO 3
GND
2
U17
7805
DAC1_VA_+5V
ANALOGUE SUPPLY
C57
2200U 35V EL
C58
2200U 35V EL
C70
2200U 35V EL
C71
2200U 35V EL
POWER
D11
SB1H100
D12
SB1H100
D13
SB1H100
D14 SB1H100
+21V UNREG (2)
-21V UNREG(2)
C35
100N 100V
C100
100N 100V C101
33N 250V
SCHOTTKY RECTIFIER
VI
1VO 3
GND
2
U22
7815
VI
2VO 3
GND 1
U24 7915
+15V(2)
-15V(2)
VI
1VO 3
GND
2
U25
7805
DAC2 _VA_+5V
C118
2200U 35V EL
C119
2200U 35V EL
C120
2200U 35V EL
C121
2200U 35V EL
VI
3VO 2
GND
1
U26
LM1117T_3.3
3.3V
VI
1VO 3
GND
2
U27
7805
+5V_DAC
C115
10U 35V EL
VI
1VO 3
GND
2
U29
7805
+5V_OSC
C125
10U 35V EL C129
10U 35V EL
1.2V
DSP Vext = 120mA
dir & dit = 25mA logic gates = 5mA
logic gates = 4mA optical Tx/Rx = 30mA
DAC1 & DAC2 Vd = 44mA
DAC2 Vd = 44mA
DAC1 Vd = 44mA
OSCILLATOR
pic circuitry = 100mA
ABUS
RS232
C42
2200U 35V EL
C136
2200U 35V EL
C127
10U 35V EL
R11 1R0 2W
R12 1R0 2W
R14
1R0 2W
R67
1R0 2W
VI
1VO 3
GND
2
U31
7805
+5V
C66
10U 35V EL
VI
3VO 2
GND
1
U18
LM1117T_3.3
C131
10U 35V EL
C150
10U 35V EL
OSC_3.3V
C141
10U 35V EL
F1
POLYFUSE 0.5A 60V
F2
POLYFUSE 0.5A 60
F3
POLYFUSE 3A 60V
F4
POLYFUSE 0.5A 60V
F5
POLYFUSE 0.5A 60V
C43 100N 50V X7R SM 0805 C45
100N 50V X7R SM 0805
C51
100N 50V X7R SM
0805
C52
100N 50V X7R SM
0805
C34
10U 35V EL
Q11
TIP31
etc = 60mA
C135
10U 35V EL
C62
100N 50V X7R SM
1206
C47
100N 50V X7R SM
0805
C128
100N 50V X7R SM
0805
C130
100N 50V X7R SM
0805
C132
100N 50V X7R SM
0805
C134
100N 50V X7R SM
0805
C114
100N 50V X7R SM 0805
C116
100N 50V X7R SM
0805
C124
100N 50V X7R SM
0805
C126
100N 50V X7R SM
0805
C69
100N 50V X7R SM
0805
C142
100N 50V X7R SM
0805
C108
100N 50V X7R SM
0805 C109
100N 50V X7R SM
0805
C103 100N 50V X7R SM
0805
C102 100N 50V X7R SM
0805
C213
100U 35V EL
C16
100U 35V EL
AC_5V
C25
100U 35V EL
C104
100U 35V EL
C105
100U 35V EL
C46
100U 35V EL
C137
100U 35V EL
C64
10U 35V EL
C112
10U 35V EL
1
P1
PAD EMC M3
C117
100N 50V X7R SM
0805
R152
47R 1/4W
VI
1VO 3
GND
2
U49 7815
C133
100N 50V X7R SM
0805
C240
100N 50V X7R SM
0805
VI
1VO 3
GND
2
U51
7815
C243
100N 50V X7R SM
0805
C251
100N 50V X7R SM
0805
C252
10U 35V EL
C241 10U 35V EL
C253
100N 50V X7R SM
1206
C254
100N 50V X7R SM
1206
+10V UNREG
Q6
MPSA14
R160 32R 2W
R161
10K
0805
STANDBY CONTROL
1
2
3
4
5
6
7
8
9
10
CN10
2,5MM 10W ST HEADER
Q10
TIP31
D24 6.2V
R163
470R
1206
R164 470R
1206
R165
10K
0805
R166
10K
0805
HIGH - ON
LOW - STANDBY R167
10K 0805
Q13
BC817-25
Q17
BC817-25
Q18 BC817-25
Q12
BC817-25
D2
BYG10G
D21
BYG10G
D23
BYG10G
D22
BYG10G
1
P2
PAD EMC M3
1
P3
PAD EMC M3
1
P4
PAD EMC M3
C68
1N 50V NP0 SM 0805
C183
1N 50V NP0 SM 0805
C189
1N 50V NP0 SM
0805
D30
1N4002
R86
10K 0805
VI
1VO 3
GND
2
U36
7805
C211
10U 35V EL
C236
100N 50V X7R SM 0805
C237
100N 50V X7R SM
0805
+5V_DIG
VI
2
SHDN
1
GND 3
VO 4
ADJ 5
U30
LT1963AET
C63
47N 16V ECHU SM
C49
47N 16V ECHU SM
C50
47N 16V ECHU SM
C107
47N 16V ECHU SM
C106
47N 16V ECHU SM
C110
47N 16V ECHU SM
C111
47N 16V ECHU SM
C138
100N 50V X7R SM
0805
C140
100N 50V X7R SM
0805
C250
1000U 25V EL
C65
1000U 25V EL
R133
220R 2W
Rev 6: Change C35, C59 from 33N 250V to 100N 100V
Change C61, C101 from 100N 100V to 33N 250V
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Cambridge Audio Azur 740C CD Player
AP20020/6 DAC Circuit Diagram (SPDIF - RS232)
IR OUT
IR IN
IR IN
CN100
CKX-3.5-12
3.5mm JACK
+5V
3
OPT
1GND
2
U1 TSOP1836 IR RECEIVER
+5V
1 2
3
U3:A
4011
VDD=+5V
VSS=GND
1
2
6 5 4
NC
3
U2 OP4N25
5 6
4
U3:B
4011 VDD=+5V VSS=GND
8
9
10
U3:C
4011 VDD=+5V VSS=GND
12
13
11
U3:D
4011
VDD=+5V VSS=GND
+5V
36 kHz
IR receiver
A K
D1
MV50640
1
2
5
CN1:A
AV2-8,4-14/EC
3
4
5
CN1:B
AV2-8,4-14/EC
R1
220R 0805
R3
10K 0805
R4 10K 0805
Q1
BC817-25 SM
R5
10K
0805
R6
100R 0805
R7
100R 0805
R8 2R2 0805
C1
1N 50V NP0 SM
0805
IR OUT
R9
47R 0805
R10 220R 0805
SERIAL_RX
SERIAL_TX
OUTPUT 1
GND 2
VCC 3
U4
APRX179AT
12
3
CN3
AV-8,4-8ES
C7
100N 50V X7R SM
0805
C8
10U 35V EL
R16
100R 0805
C11
1N 50V NPO SM
0805
R18
75R
0805
OUTPUT 1
GND 2
VCC 3
U5
APRX179AT
1 2
3
CN4
AV-8,4-8ES
C9
100N 50V X7R SM
0805
R17
100R 0805
C13
1N 50V NPO SM
0805
R19
75R
0805
12
U6:A
74VHC14 VCC=+5V_DIG
5
6
U6:C
74VHC14
VCC=+5V_DIG
1312
U6:D
74VHC14 VCC=+5V_DIG
1110
U6:E
74VHC14 VCC=+5V_DIG
98
U6:F
74VHC14 VCC=+5V_DIG
R20
100R 0805
R21
10K 0805
R22
100R 0805
R23
10K 0805
R24
100R 0805
R25
100R 0805
C17
100P 50V NPO SM
0805
C18
100P 50V NPO SM
0805
MULTIPLEXER 1MULTIPLEXER 2
1E
1
S1
2
1-IN3
3
1-IN2
4
1-IN1
5
1-IN0
6
2-IN3
13
2-IN2
12
2-IN1
11
2-IN0
10
GND
8
2E 15
SO 14
1Y 7 2Y 9
VCC 16
U7
74VHC153
3.3V
SO1_U7
3.3V
C19
100N 50V X7R SM
0805
R26
10K 0805
R27
10K 0805
1 2
3
U8:A
74VHC32 VCC=3.3V
4
5
6
U8:B
VCC=3.3V
10
9
8
U8:C
VCC=3.3V
13
12
11
U8:D VCC=3.3V
R28
0R 0805
CS8416_RXP0
MULTIPLEXER 1 MULTIPLEXER 2
1E 1
S1 2
1-IN3 3 1-IN2 4 1-IN1 5 1-IN0 6 2-IN3 13
2-IN2 12
2-IN1 11 2-IN0 10
GND 8
2E
15
SO
14
1Y
7
2Y
9
VCC
16
U9
CS8406_TXP
+5V_DIG
C20
100N 50V X7R SM 0805
SO1_U9 SO2_U9
fs = 44.1kHz
fs = 48kHz min
servo spdif pass through
fs = 44.1kHz spdif input pass through
R29
1K 0805
R31
430R
0805
R32
91R 0805
12
3
CN5
AV-8,4-8ES
C22
100P 50V NPO SM
0805
C23
100N 50V X7R SM
0805
GND 1
VCC 2
INPUT 3
U10 APTX179AT
+5V_DIG
+5V_DIG
+5V_DIG
C24
100N 50V X7R SM
0805
R33
100R 0805
74HCT153
12
U23:A
VCC=+5V_DIG
34
U23:B
VCC=+5V_DIG
5 6
U23:C
VCC=+5V_DIG
13 12
U23:D
VCC=+5V_DIG
11 10
U23:E
VCC=+5V_DIG
9 8
U23:F
VCC=+5V_DIG
3
4
U6:B
74VHC14
VCC=+5V_DIG
R65 1K
0805
C161
100N 50V X7R SM
0805
+5V_DIG
C162
100N 50V X7R SM 0805
+5V_DIG
C163 100N 50V X7R SM
0805
3.3V
L2
47UH SM
L3 47UH SM
L4
47UH SM
74HCU04
C12
100N 50V X7R SM
0805
C14
100N 50V X7R SM 0805
C21
100N 50V X7R SM
0805
C2
100N 50V X7R SM
0805
C4
100N 50V X7R SM
0805
SERVO_SPDIF_OUT R66
100R
0805
SERVO_SPDIF_OUT_3.3V
C201
47P 50V NPO SM
0805
C202
47P 50V NPO SM
0805
C215
100N 50V X7R SM
0805
C222
100N 50V X7R SM
0805
R85 100R
0805
+5V
R47
1K 0805
+5V
4
3
2
1
CN14
2MM 4W ST HEADER
C10 10U 35V EL
C26
10U 35V EL
C99
330N 50V X7R SM
0805
C122
330N 50V X7R SM
0805
C123
100N 50V X7R SM
0805
C139
100N 50V X7R SM
0805
C3
10U 35V EL
C113
47R 0805
C98
47R 0805
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Cambridge Audio Azur 740C CD Player
AP20020/6 DAC Circuit Diagram (Flash Connector & Mute)
A12
A10 A9
A14
A15 A18
WE_FLASH#
A17 A16 A13
A8 A7 A6
A5 A4
A3 A2 A1
D0 D1 D2
D3 D4
D5 D6
D7 CS_FLASH# A11 OE_FLASH#
+5V
OE1
SO1_U7
SO2_U9 SO1_U9
MUTE_PIC
1 2
3
4 5 6
7
8
CN8
2MM 8W ST HEADER
SERIAL_RX
SERIAL_TX IR OUT
1 2
3 4 5
6
7
8
9
CN9
2MM 9W ST HEADER
U_RESET U_SS U_SCLK
U_MOSI
U_INTREQ
U_MISO
A11
1
A9
2
A8
3
A13
4
A14
5
A17
6
WE
7
Vcc
8
RESET
9
A16
10
A15
11
A12
12
A7
13
A6
14
A5
15
A4
16
OE 32
A10 31
CE 30
IO7 29
IO6 28
IO5 27
IO4 26
IO3 25
GND 24
IO2 23
IO1 22
1/O0 21
A0 20 A1 19 A2 18
A3 17
U32 AT49BV002AN
3.3V DSP
1
2
3
CN7
2MM 3W ST HEADER
R72 100R 0805
SERVO_SPDIF_OUT
C160
100N 50V X7R SM 0805
C164
100N 50V X7R SM
0805
R140
62R 2W
+10V UNREG
R141 4K7 0805
R142
10K
0805
R143
100K
0805
C212 10U 35V EL
R144
8K2 0805
0805
R145
2K2 0805
D17
1N4001
AC_5V D18
1N4001
D20 1N4148
R146
10K 0805
RELAY
1 2 3
4
5 6
7
8
R151 100R
R131
4K7 0805
D19
1N4148
R154
10K 0805
OE1 low = mute
high = unmute low = mute = relay o
high = unmute = relay on
STANDBY CONTROL
D29
1N4002
1 2
RL3:A
ME2-5S
Q4 MPSA14
Q2
BC807-25 SM
Q8 BC807-25 SM
12
C5
470U 16V EL
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Cambridge Audio Azur 740C CD Player
AP20020/6 DAC Circuit Diagram (DSP)
BITCLK WDCLK SDATA_L SDATA_R CS_DAC1 CS_DAC2
RELAY
SS
DSP RESET
RESET
DAC1_MCLK DAC2_MCLK
MOSI SCK
SS_1
SCK_1
DSP_MISO_1
DSP_MOSI_1
D7
D6 D5 D4
D3
D2 D1 D0 A18
A17 A16 A15
A14 A13
A12
A11
A10
A9
A8
A7
A6
A5
A4
A3
A2
A1
WE_FLASH#
OE_FLASH#
CS_FLASH#
MUTE
I2S DATA
I2S FRAME
INTREQ
MISO
RXP3
1
RXP2
2
RXP1
3
RXP0
4
RXN
5
VA
6
AGND
7
FILTER
8
RST
9
RXP4
10
RXP5
11
RXP6
12
RXP7
13
AD0/CS
14 AD1/CDIN 15
SCL/CCLK 16
SDA/CDOUT 17
AD2/GPO2 18
GPO2 19
GPO0 20
VL 21
DGND 22
VD 23
RMCK 24
OMCK 25
SDOUT 26
OSCLK 27
OLRCK 28
U11
CS8416
CS8416_RXP0
SERVO_SPDIF_OUT_3.3V
C27
100N 50V X7R SM
0805
3.3V
R34 1K
0805
1
2 3
45
6 7
8
R35
100R 3.3V
R37 10K
0805
R39 10K 0805
CS8406_TXP
R41 10K 0805
VCC 8
CLK 5
N/C
1
GND
4
X1
24.576MHz
+5V_OSC
1 2
U15:A
74VHC14
VCC=OSC_3.3V
3 4
U15:B
74VHC14
56
U15:C
74VHC14
13 12
U15:D
74VHC14
11 10
U15:E
74VHC14
9 8
U15:F
74VHC14
R42
100R 0805 R43
100R 0805 R44
100R 0805 R45 33R 0805
C37
10P 50V NPO SM
0805
C38
10P 50V NPO SM
0805
C39
10P 50V NPO SM
0805
C40
10P 50V NPO SM
0805
SCHMITT INVERTER
C41
10P 50V NPO SM
0805
R46 33R 0805
1
2 3 4 5
6 7 8
R49 33R
1
2
3
4 5
6
7
8
R54
33R
R57 1K 0805
R58 1K 0805
1
2
3
4 5
6
7
8
R55
33R
R56
10K 0805
R61 100R 0805
1
2
3
4 5
6
7
8
R62
100R
1 2 3 45
6
7 8
R36 33R
1
2
3
4 5
6
7
8
R50
100R
1
3
5
7
2
4
6
8
910
11
13
12
14
CN6 2X7W VERTICAL HEADER
1 2
3
45
6 7
8
R51 10K
R52 4K7
0805
3.3V DSP
JTAG
1.2V
3.3V
1
2
3
4 5
6
7
8
R53
33R
1
2
3
4 5
6
7
8
R59
33R
SDA/CDOOUT 1
AD0/CS 2
AD2 3
RXP 4
TEST 5
VD 6
TEST 7 TEST 8
RST 9
TEST 10
TEST 11
ILRCK 12
ISCLK 13
SDIN 14
TCBL
15 TEST
16 TEST 17 TEST
18 INT
19 U
20 OMCK
21 GND
22 VL
23 H/S 24 TXN 25 TXP
26 AD1/CDIN 27 SCL/CCLK
28
U12
CS8406
3.3V
3.3V
R38
100R
0805
R40
100R 0805
1
2
3
4 5
6
7
8
R60 100R
1 2 3 4 5
6
7 8
R63 100R
2 3
1
U19:A
74VHC125
VCC=3.3V
5 6
4
U19:B
VCC=3.3V
9 8
10
U19:C
VCC=3.3V
12 11
13
U19:D
VCC=3.3V
23
1
U20:A
VCC=+5V
5
6
4
U20:B
74HCT125
VCC=+5V
98
10
U20:C
VCC=+5V
1211
13
U20:D
VCC=+5V
U_INTREQ
U_MISO
U_MOSI
U_SCLK
U_SS
U_RESET
VCC 3
RST
2
GND
1
U21
DS1818
SPI CONTROL
1FUNCTIONAL 0MODE
1BOOT 0MODE
GND
1
GND
2
GND
7
VROUT2
4
VROUT1
5
VDDEXT
6
GND
8
GND
9
CLKIN
10
XTAL
11
VDDEXT
12
RESET
13
NMI
14
GND
15
RTXO
16
RTXI
17
VDDRTC
18
GND
19
VDDEXT
20
PPI_CLK
21
PPI0
22
PPI1
23
PPI2
24
PPI3
26 VDDINT
25
PF15/PPI4
27
PF14/PPI5
28
PF13/PPI6
29
GND
30
VDDEXT
31
PF12/PPI7
32
PF11/PPI8
33
PF10/PPI9
34
PF9/PPI10
35
PF8/PPI11
36
PF7/SPISEL7/PPI12
37
PF6/SPISEL6/PPI13
38
GND
39
GND
40
GND
41
GND
42
GND
43
GND
44
VDDEXT
45
PF5/SPISEL5/PPI14
46
PF4/SPISEL4/PPI15
47
PF3/SPISEL3/PPI_FS3
48
PF2/SPISEL2
49
PF1/SPISEL1/TMRCLK
50
PF0/SPISS
51
VDDINT
52
SCK
53
MISO
54
MOSI
55
GND
56
VDDEXT
57
DT1SEC
58
DT1PRI
59
TFS1
60
TSCLK1
61
DR1SEC
62
DR1PRI
63
RFS1
64
RCLK1
65
VDDINT
66
DT0SEC
67
DT0PRI
68
TFS0
69
GND
70
VDDEXT
71
TSCLK0
72
DR0SEC
73
DR0PRI
74
RFS0
75
RSCLK0
76
TMR2
77
TMR1
78
TMR0
79
VDDINT
80
TX
81
RX
82
EMU
83
TRST
84
TMS
85
TD1
86
TD0
87
GND
88
GND 89
GND 90
GND 91
GND 92
VDDEXT 93
TCK 94
BMODE1 95 BMODE0 96
GND 97
DATA15 98 DATA14 99 DATA13 100 DATA12 101
DATA11 102
DATA10 103
DATA9 104 DATA8 105
GND 106
VDDEXT 107
DATA7 108
DATA6 109 DATA5 110 DATA4 112
VDDINT 111
DATA3 113 DATA2 114 DATA1 115 DATA0 116
GND 117
VDDEXT 118
BG 119
BGH 120
ADDR19 121
ADDR18 122
ADDR17 123
ADDR16 124
ADDR15 125
ADDR14 126
ADDR13 127
GND 128 GND 129 GND 130 GND 131 GND 132
GND 133
VDDEXT 134
ADDR12 135
ADDR11 136
ADDR10 137
ADDR9 138
ADDR8 139
ADDR7 140
ADDR6 141
ADDR5 142
VDDINT 143
GND 144
VDDEXT 145
ADDR4 146
ADDR3 147
ADDR2 148
ADDR1 149
ABE1 150
ABE0 151
AWE 152
ARE 153
AOE 154
GND 155
VDDEXT 156
VDDINT 157
AMS3 158
AMS2 159
AMS1 160
AMS0 161
ARDY 162
BR 163
SA10 164
SWE 165
SCAS 166
SRAS 167
VDDINT 168
CLKOUT 169
GND 170
VDDEXT 171
SMS 172
SCKE 173
GND 174
GND 175
GND 176
GND
3
U13
ADSP-BF532
R30 0R 0805
R64 0R 0805
I2S ERR
I2S ERR
C28
100N 50V X7R SM
0805
C29
100N 50V X7R SM
0805
C30
10N 50V X7R SM
0805
C32
100N 50V X7R SM
0805
C33
100N 50V X7R SM
0805
C97
100N 50V X7R SM
0805
C74
100N 50V X7R SM
0805
C75
100N 50V X7R SM
0805
C76
100N 50V X7R SM
0805
C77
100N 50V X7R SM
0805
C78
100N 50V X7R SM
0805
C96
100N 50V X7R SM
0805
C79
100N 50V X7R SM
0805
C80
100N 50V X7R SM
0805
C81
100N 50V X7R SM
0805
C82
100N 50V X7R SM
0805
C83
100N 50V X7R SM
0805
C84
100N 50V X7R SM
0805
C85
100N 50V X7R SM
0805
C86
100N 50V X7R SM
0805
C95 100N 50V X7R SM 0805
C87
100N 50V X7R SM
0805
C88
100N 50V X7R SM
0805
C89 100N 50V X7R SM 0805
C90 100N 50V X7R SM 0805
C91 100N 50V X7R SM 0805
C92 100N 50V X7R SM 0805
C93
100N 50V X7R SM
0805
C94
100N 50V X7R SM
0805
C168
100N 50V X7R SM
0805
C169
100N 50V X7R SM
0805
3.3V
+5V
R132
100R 0805
D15
BAS16 75V 0,3A
D16
BAS16 75V 0,3A
MUTE_PIC
R135 NO FIT 0805
3.3V DSP
C149
10U 35V EL
C143 10U 35V EL
R153 33R 0805
R130 10K
0805
3.3V DSP
1.2V DSP
R87 10K
0805
R88 10K 0805
3.3V 3.3V
R2
0R 1206
R89 0R 1206
C36
10U 35V EL
C31
10U 35V EL
C165
10U 35V EL
C166
10U 35V EL
C167 10U 35V EL
R13
47K
0805
(NO FIT)
(NO FIT)
PIN 3 IS CUT ON THE CONNECTOR
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Cambridge Audio Azur 740C CD Player
AP20020/6 DAC Circuit Diagram (Analogue Stage)
SDATA_L BITCLK
WDCLK
DAC1_MCLK
WDCLK BITCLK
SDATA_R
DAC2_MCLK
MUTE
RESET
MUTE
RESET
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
U54
WM8740
C270
10U 35V NP
C275
10U 35V NP
C276
10U 35V NP
R93
910R 1206
R94 910R 1206
C279
1N5 PP
C280
1N5 PP
R119 2K7 1206
R120 2K7 1206
3
2
1
8 4
U55:A
NE5532
5
6
7
U55:B
NE5532
C281
47N 16V ECHU SM
C272
47N 16V ECHU SM
C273
47N 16V ECHU SM
C274
47N 16V ECHU SM
R180 1K8 1206
R181 1K8 1206
C277
220pF PP
C282
220pF PP
R182 2K2 1206
R183 2K2 1206
C284
47N 16V ECHU SM
C285
47N 16V ECHU SM
-15V
+15V
R184
910R 1206
R185 910R 1206
C286
1N5 PP
C287
1N5 PP
R186 2K7 1206
R187 2K7 1206
3
2
1
8 4
U56:A
NE5532
5 6
7
U56:B
NE5532
R188 1K8 1206
R189 1K8 1206
C288 220pF PP C289 220pF PP
R190 2K2 1206
R191 2K2 1206
C290 10p 50V NP0 SM
C291
47N 16V ECHU SM
C292
47N 16V ECHU SM
-15V
+15V
R194 680R 1206 R195 680R 1206
3 2
1
84
U57:A
OP275
5 6
7
U57:B
OP275
R196 1K 1206
R197 1K 1206
R198 2K2 1206
R199 2K2 1206
C294
10P 50V NP0 SM
C295
10P 50V NP0 SM
C283
10P 50V NP0 SM
C296
10P 50V NP0 SM
C297
47N 16V ECHU SM
C298
47N 16V ECHU SM
-15V
+15V
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
U58
WM8740
C301
10U 35V NP
C303
10U 35V NP
C304
10U 35V NP
R200
910R 1206
R201 910R 1206
C306
1N5 PP
C307
1N5 PP
R202 2K7 1206
R203 2K7 1206
3
2
1
8 4
U59:A
NE5532
5
6
7
U59:B
NE5532
C308
47N 16V ECHU SM
C309
47N 16V ECHU SM
C310
47N 16V ECHU SM
C311
47N 16V ECHU SM
R204 1K8 1206
R205 1K8 1206
C312
220pF PP
C313
220pF PP
R206 2K2 1206
R207 2K2 1206
C314
47N 16V ECHU SM
C315
47N 16V ECHU SM
-15V(2)
+15V(2)
R208
910R 1206
R209 910R 1206
C316
1N5 PP
C317
1N5 PP
R210 2K7 1206
R211 2K7 1206
3
2
1
8 4
U60:A
NE5532
5
6
7
U60:B
NE5532
R212 1K8 1206 R213 1K8 1206
C318
220pF PP C319
220pF PP
R214 2K2 1206
R215 2K2 1206
C321
47N 16V ECHU SM
C322
47N 16V ECHU SM
-15V(2)
+15V(2)
R218 680R 1206
R219 680R 1206
3
2
1
84
U61:A
OP275
5 6
7
U61:B
OP275
R220 1K 1206
R221 1K 1206
R222 2K2 1206
R223 2K2 1206
C324
10P 50V NP0 SM
C325
10P 50V NP0 SM
C326
10P 50V NP0 SM
C327
10P 50V NP0 SM
C328
47N 16V ECHU SM
C329
47N 16V ECHU SM
-15V(2)
+15V(2)
1
2
4
CN12:A
AV2-8,4-13EL
R129
NO FIT
0805
C210
100P 50V NPO SM
3
4
5
RL3:B
ME2-5S
R174
47K 0805
C264
100P 50V NP0 SM
0805
1
3
4
CN12:B
AV2-8,4-13EL
6
7 8
RL3:C
ME2-5S
R179
47K 0805
C269
100P 50V NP0 SM
0805
R104
47R 1206
R172
47R 1206
D25
BYG10G
D26 BYG10G
D27 BYG10G
D28 BYG10G
+5V_DAC
DAC1_VA_+5V DAC2 _VA_+5V
1
2 3 45
6 7 8
R192
33R +5V_DAC
+5V_DAC
DAC2 _VA_+5V
DAC1_VA_+5V
1 2
3
4
5
6
7
8
R193
33R
RIGHT CHANNEL
LEFT CHANNEL
C320
10P 50V NP0 SM
C15
47N 16V ECHU SM
C53
47N 16V ECHU SM
+5V_DAC
C54
47N 16V ECHU SM
C55
47N 16V ECHU SM
+5V_DAC
C6
1U 100V PP
C48
1U 100V PP R15
100K
0805
R48
100K
0805
C302
47U 16V NP
C271
47U 16V NP
R68 10K
0805
+5V_DAC
R69 10K
0805
+5V_DAC
C293
470U 16V NP
C299
470U 16V NP
R70
1k
1206
R71
1k 1206
C73 100N PP 100V
C72
100N PP 100V
C56 100N PP 100V
C67
100N PP 100V
LEFT
RIGHT
D31
BAW56 75V 0,215A
D32
BAW56 75V 0,215A
D33
BAW56 75V 0,215A
D34
BAW56 75V 0,215A
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