Cambridge Audio Azur 740-C Service manual
Issue Date: 28th September 2007
________________________________________________________________________
SERVICE MANUAL
________________________________________________________________________
SPECIFICATIONS:
740C
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
D/A converters Dual Wolfson
Digital input sampling frequencies supported 32kHz, 44.1kHz, 48kHz, 88.2kHz, 96kHz, 176.4kHz,
Digital output sampling frequencies supported 32kHz – 192kHz pass through (including 44.1kHz for CD)
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)
192kHz
48kHz, 96kHz, 192kHz upsampled
AP22735/1
Gallery Court Hankey Place London SE1 4BB UK
Tel: +44 (0)20 7940 2200 Fax: +44 (0)20 7940 2233
1
740C SERVICE MANUAL
TABLE OF CONTENTS
Safety Precautions & Important Notes 3
Exploded Diagram
Exploded Diagram Parts List
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
Servo Board Layout (Top Side)
Servo Board Layout (Bottom Side) 12
Servo Assembly PCB BOM
DAC Circuit Diagram (Supply & Connectors)
DAC Circuit Diagram (SPDIF – RS232)
DAC Circuit Diagram (Flash Connector & Mute)
DAC Circuit Diagram (DSP)
4
5
10
11
13-15
16
17
18
19
DAC Circuit Diagram (Analogue Stage)
DAC Board Layout (Top Side)
DAC Board Layout (Bottom Side)
DAC Assembly PCB BOM 23-25
Mains Circuit Diagram 26
Mains Board Layout (Top Side)
Mains Board Layout (Bottom Side)
Mains PCB BOM
IC Pin Layout Details 30-38
20
21
22
27
28
29
2
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.
© 2007 Audio 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.
3
Cambridge Audio Azur 740C CD Player
Exploded Diagram
To enhance viewing, please print to A3 4
5
noitpircseDrebmuNtraPyrotcaFrebmuNtraPPAfeRgniwarD
Cambridge Audio Azur 740C CD Player
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
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
10 PY1175 4006-740058E001 740C DAC Module
15 PY1357 3200-082591E000 Transformer AC115/60Hz TO8259A for 740C (CU Version)
Exploded Diagram Parts List
16 PY1165 9805-084000E001 Azur 840A/C 740A/C Remote Control Assy Rev A
+5V
GND
OPT
U1
CN7
Stop
SW2
Menu
SW4
SW1
SW3
Standby
D1
LED3MM BLUE
R2
220R
+5V
R9
220R
Q2
BC337
R13
10K
LED
SW8
SW6
Open/Close
Select
ForwardSkip
SW5
SW7
Play/Pause
BackSkip
37
36
38
39
40
RB4
RB2
RB5
RB6/PGC
RB7/PGD
RB3/PGM
MCLR/VPP1RA0/AN02RA1/AN13RA2/AN24RA3/AN3/VREF5RA4/T0CKI6RA5/AN4/SS7RE0/RD/AN58RE1/WR/AN6
U2
+5V
R6
10K
CLK
SDTX
CS
INT
SDRX
100nF
C9
+5V
10K
R19
R18
10K
LED
35
34
RB1
IRIN
33
RB0/INT
9
RS
32
31
VSS
VDD
RE2/CS/AN7
10
E
SERVORESET
RESET
OE1#
MUTE
30
29
27
RD7/PSP7
RD5/PSP528RD4/PSP4
RD6/PSP6
VDD11VSS12OSC1/CLKIN13OSC2/CLKOUT14RCO/T1OSO/T1CKI15RC1/T1OSI/CCP2
OSC1
OSC2
U7_SO1
IR OUT
SERIALTX
SERIALRX
26
24
25
RC5/SDO
RC7/RX/DT
RC6/TX/CK
RC4/SDI/SDA
RC2/CCP1
RC3/SCK/SCL
18
16
17
SCL
U7_S02
U9_S01
100R
R32
RESET
SERVORESET
TO DAC BOARD CN9 (RS232/MUTE/SPDIF CNTRL)
D6D7SDA
23
21
RD3/PSP322RD2/PSP2
RD0/PSP0
RD1/PSP1
PIC16F874A
19
20
D5
D4
JST2MM S8B-PH-KS
567
123
4
8
SO2_U7
MUTE
SO1_U9
SERIALTX
OE1
SO1_U7
SERIALRX
CONTROLB US
100R
100R
100R
100R
R31
100R
100R
R29
R30
R12
10K
R26
R27
R28
Q1
BC337
R37
RMETAL 1/4W
220R
1/4WMetal Film
R36
RMETAL1/4W
220R
1/4WMetal Film
TSOP18IR RECEIVER
3
1
2
C11
10U16V
C3
100n
R1
47R
+5V
RESET
+5V
10U16V
C13
C14
100nF
FIN
GND12RIN
VCC
OUT1
GND2
OUT27COM
U5
1
BA6218
3
5
6
8
9
Cambridge Audio Azur 740C CD Player
+8V
8
5
7
Vss
GP16GP2
+5V_SERVO
GP0
Vdd
U4
1
2
D7
1N4004
D6
1N4004
680R
R33
123
4
CN9
C22
100nF
MCLR4GP43CLKIN
PIC12C508
BZX79C5V1500MW
D3
BZX79C5V1500MW
D2
680R
+8V
R34
1N4004
C19
D4
D5
1N4004
C18
MGND
5
1
CN8
DATA
100R
100R
R25
R24
SPIINT
SPIDATA TX
SPICS
SPICLK
9
45678
CN6
100R
100R
100R
100R
R21
R22
R20
R23
LED
SPI DATARX
2
3
1
JST2MM S9B-PH-KS
+5V
TO DAC BOARD CN8 (SPI)
MGND
100nF
10U16V
MGND
345
2
DATA
COM1
COM2
COM3
COM4
LCD Connector 1
123
7
8
456
CN2
CONN-H8
BRIGHT
ON/OFF
C8
100nF
R5
100R
C7
LCD Connector 2
+5V
10U16V
C4
100nF
D6D7
D0D1
D2D3
D4D5
VssVdd
LEDK
VoRS
R/W
1
8
7
345
6
2
CN5
6a
1a2a3a4a5a
7a
8a
LEDA
E
LCD
SEG10
SEG8
SEG67SEG56SEG45SEG3
SEG12SEG0
CN10
1
1
CN3
CONN-H8
SEG11
SEG9
SEG7
SEG2
9
8
3
4
13
12
11
10
1
2
234
3
678
4
5
CN4
X1
CRYSTAL
FREQ=20MHz
22pF
22pF
C6
C5
C10
100nF
Q3
BC337
+5V
CONN-8HEADDUAL BOT
SEG1516SEG1415SEG1314SEG12
SEG1617SEG1718SEG1819COM1
COM322COM423NC
COM2
LCD740C
20
21
24
COM1
COM3
COM4
COM2
6
7
5
CONN-H7
R11
13
R14
1K2
+5V_SERVO
ON/OFF
14A16
H0
H11W1
U3
4
+5V_SERVO
C1
1n50V X7R
123
4
5
CN1
10OR
R8
K1
K2
+5V
GND
REMOTE
IROUT
BRIGHT
R35
100K
R15
10K
R3
56R
Q4
BC337
R4
56R
2
PREMULTI 500R
300R
R10
R17
RMETAL 1/8W
4k7
1/8WMetal Film
1/8WMetal Film
R16
RMETAL 1/8W
4k7
13
5
9
7W012
10
L0
A0
A2
SCL
SDA
L1
GND
VCC
DS1803
3
8
16
C12
100nF
C2
1n50V X7R
R7
100R
7
6
CONN-H7
RESET
POWER DETECT
P5
SERVORESET
1
1
1
PADEMC M3
P3
P4
PADEMC M3
PADEMC M3
C21
1nF
C20
1nF
C17
1nF
C16
1nF
C15
1nF
1
1
P1
PADEMC M3
P2
PADEMC M3
AP19135/4 Front Panel Circuit Diagram
FROMSERVO BOARD DRAWER OPEN/CLOSE (SPI)
TOMECH DRAWER OPEN/CLOSE (SPI)
From Servo Board (LCD)
To Servo Board
To enhance viewing, please print to A3 6
Cambridge Audio Azur 740C CD Player
AP19135/3 Front Panel Board Layout (Top Side)
To enhance viewing, please print to A3 7
Cambridge Audio Azur 740C CD Player
AP19135/3 Front Panel Board Layout (Bottom Side)
To enhance viewing, please print to A3 8
Cambridge Azur 740C Front Panel BOM
AP Part no. Value Description/Type Factory PN Qty Component Ident NOTES
RESISTORS
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
22pF Ceramic NPO, Pitch = 5.0mm 2 C5, C6
VR B500 OHM +-10%
WI 3296NOXOX-XA1-
013
CAPACITORS
1 R11
Mount on bottom side of PCB with
screw adjust facing upwards
AP20712/5
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
SEMICONDUCTORS
TSOP1836SS3V TSOP IR RECEIVER 1 U1
PIC16F877A-I/P PIC 1 U2
PY983 DS18030-050 DIGITAL POT 4118-030051E200 1 U3
PIC12C508A-I/P PIC 1 U4
PY260 BA6218 CD DRIVER IC 1 U5
TRANSISTORS
PY214 BC337 NPN SMALL SIGNAL 4 Q1-Q4
DIODES
LED BLUE 1 D1 HFB963M-130
5V1 ZENER BZX79C5V1 1402-511201E200 2 D2, D3
1N4004 GENERAL PURPOSE RECTIFIER 4 D4, D5, D6, D7
MISCELLANEOUS
Programme with AP20728/4, Please add
version label
Programme with AP20231/1, Please add
version label
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
Note: resistors, capacitors and other 'generic' electronic components are
not usually stocked by the manufacturer. Please obtain these locally.
9
SLT-
SLT+
FM-
FM+
DM-
DM+
CN15
1
2
345
6
MOTORDRIVE
C58
100nF
C57
C46
470uF16V
+5V
C45
3
100nF
VO
GND
2
VI
U8
7805
1
C44
100nF
+8V
C47
470uF16V
C48
100nF
3
VO
GND
2
VI
U7
7808
1
CN21
FPDIS
1
2
C50
3300uF25V
C49
100nF
FU1
T2AL
C52
C51
R31
10K
+5V
R30
10K
+8V
PWRDET
RESET
+5V
GND
K1
REMOTE
K2
CN7
4
567
1
2
3
CONTROLKEYS
Cambridge Audio Azur 740C CD Player
REMOTE
2
1
4
3
CN6
SEG18
SEG17
SEG16
100nF
100nF
14.5V
IN4004
IN4004
D4
D3
IN4004
IN4004
100nF
C53
D2
D5
100nF
C54
1
2
AC IN
AC
CN19
OLT
GND
OPEN
CLOSE
CLT
CN8
5
123
4
DRAWDRIVE
+5V
10K
R29
R34
470R
Q11
8050
Q12
Q10
8550
R67
14mmlink(840c only)
Q9
8550
R33
470R
C86
+5VDD
+5V
6
678
5
12345
7
CN5
LCD
SEG14
SEG12
SEG11
SEG10
SEG7
SEG15
SEG13
SEG9
SEG8
SEG6
SEG5
8050
Q7
8050
8050
Q8
+5V
100nF
C89
C90
10N COG CER
R27
10K
LINK
LK1
23456
1
CN4
LCD
SEG3
SEG4
SEG2
+5V
R64
D10
1N4148
D11
1N4148
R28
10K
3
1
2
CN22
HEADER3WAY
NOFITFOR 740/ 840C
R24 10K
R23 10K
R32
4K7
R25 1K
R26 10K
L3
100uH
NC
NC
50
49
48
47
46
44NC43NC42
41
45
VSS
10N COG CER
ADK2
ADK1
ADK3
VAREF
(BOOT)
PWRDET
51
VDD
52
FL/TL
53
NC
NC
54
NC
NC
55
NC
NC
56
NC
NC
57
NC
NC
58
NC
NC
59
NC
NC
60
OPEN=F/L
SHORT=T/L
NC
NC
61
NC
NC
62
NC
NC
63
NC
NC
64
NC
NC
65
NC
NC
66
NC
NC
67
NC
NC
68
NC
NC
69
NC
NC
70
NC
NC
71
NC
NC
U3
TOSHCDMCU
72
NC
NC
73
SEG18
74
SEG17
75
SEG16
76
SEG15
77
SEG14
78
SEG13
79
SEG12
80
SEG11
SEG3
SEG1081SEG982SEG883SEG784SEG685SEG586SEG4
SEG289SEG190SEG091COM392COM293COM1
88
87
7
8
R22NCR21
+5V
LCD
SEG0
COM0
COM2
COM3
SEG1
COM1
100nF
13
14
15
16
17
18
19
20
21
22
23
24
OUT(-)4
PWGND
PWGND1OUT(-)12PVCC13OUT(+)14VIN15VRI6VCI7VIN28OUT(+)29PVCC210OUT(-)2
U6
+8V
100nF
C59
C98
VIN4
PVCC4
OUT(+)4
100N COG
VIN3
SVCC
C56
220uF16V
SGND
PVCC3
OUT(-)3
PWGND
OUT(+)3
PWGND
TA2092N
C91
100N COG
11
12
100nF
C61
LK4
C60
0.047uF
LK3(NF)
TOSIGNALGROUND
3K3
3K3
R46
R47
R45
3K3
10K
R43
R42
3K3
470pF
470pF
C24
C25
R44
CN20
MUTE
1
2
10K
40
39
37
33
32
31
38
34
SLT
CEE
CLT
OLT
BUS336BUS235BUS1
BUS0
BUCK
D-OPEN
D-CLOSE
30
RES
29
CORW
28
NC
NC
27
NC
NC
26
NC
NC
25
NC
NC
24
NC
NC
23
NC
NC
2K2
10K
22
NC
NC
21
NC
NC
R66
R17
20
NC
NC
19
NC
NC
18
NC
NC
+5V
17
(WAIT)
16
(SO2)
15
(SI2)
14
SCK2
13
NC
NC
12
NC
NC
11
NC
NC
10
MUTE
9
REMOTE
8
NC
NC
7
TEST
6
NC
NC
5
REMOTE
NC
NC
4
RESET
3
XIN
2
XOUT
1
VSSS
COM095VLC96NC
NC98NC99VDD
94
97
100
C92
100N COG
NC
NC
NC
CRYSTAL
X2
7.3728MHz
C85
+5V
100uF16V
100uH
C83
L4
470uF16V
+5VCC
22K
SETLCDCONTRAST
L5
3K3
R41
3K3
0.047uF
0.047uF
C26
C27
LOUT
GND
ROUT
MUTE1
MUTE
CN12
1
2
345
GND
OSC
GND
CN17
XTALI
CN18
XTALO
AUDIOOUT no stu
1
1
2
2
OSC MOD
100Knos tu
R36
R35
100Kno stu
C79
100nF
Q13
9014C
C80
25pF
10K
R18
4K7
R76
C81
25pF
R19
3K3
D9
1N4148
C84
10uF16V
C82
220uF16V
R20
100uH
1K
+5VDD
FC-
TR-
TR+
FC+PDVRLDGNDFCBA
DEVCC
CN16
L2
10uH
Q1
9015
C62
100nF
R62
15R
R60
1K
C21
0.0047uF
C22 0.047uF
C23
0.047uF
C70
47uF16V
C19
100N COG
1nF
C87
C15
0.047uF
5VOSC
15pF
15pF
X1
CRYSTAL
C17
C16
16.9344MHz
+5V
R65
10K
1
8
23456
7
CN3
SI2
+5V
PROGRAMMING
GND
SO2
WAIT
BOOT
SCK2
RESET
VC
MECH
12345
678
9
10111213141516
0R
R58
47K
47K
47K
47K
56K
56K
R48
R51
R50
R49
R52
R57
100uF16V
C69
100nF
C64
C20
C65
R59
82K
5
1
2
3
4
7
8
9
10
11
12
14
15
6
FPI
TPI
SEL
FNI
TNI
TEB
MDI
TEN13TEO
VCC
LDO
SBAD
RFGC
2VRO
GMAD
C101
RFRP20BTC
PKC
RFO28GND29RFN2
FEO16FEN17SEB18VRO
RFCT
RFRPIN24RFGO25GVSW26AGCIN
U1
27K
R61
100nF
C4
NC
NC
NC
NC
C18 47uF16V
NC
NC
NC
NC
NC
NC
NC
NC
NC
10R1/4W
R40
TA2153FN
21
22
27
19
23
30
100nF
C2
0.22uF
0.22uF
220R
R4
C1
C72
C3
100nF
R2
10K
C71
C73
100pF
R3
C7
0.01uF
0.047uF
C5
47uF16V
C77
50
46
43
49
47
45
44
42
40
39
38
37
48
41
U2
FEI
RFI
TEI
RFZI
TRO
TEZI
FOO
TSIN
RFRP
VREF
SBAD
RFCT
SLCO
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
AVDD1
RFGC
TEBC0
TEBC1
TEBC2
DMO
2VREF
SEL
FLGA
FLGB
FLGC
FLGD
VDD3
VSS3
IO0
IO1
IO2
IO3
DMOUT
CKSE
DACT
TC9462F
TESIN
TESIO1
VSS4
PXI
PXO
VDD4
XVSS
XI
XO
XVDD
DVSR
DVSL86TEST187TEST2
BUS292BUS393VDD94VSS
RO82DVDD83DVR
TEST389BUS090BUS1
84LO85
91
81
88
NCNCNC
10Kno stu
10Kno stu
R38
R37
C30 2200pFnostu
C31 2200pFnostu
C28 47uF16V
C14 22uF16V
R11 10K
R12 10K
R13 10K
R14 10K
R15 10K
10K
R39
OSC MOD
5VOSC
8
5
CLK
VCC
C94
N/C
GND
X3
OSC DIL08
C 100N100V MCER
1
4
J1
100R
C68
22uF
R?IS 100 OHM 1% METAL FILMRES ISTOR. PLACED BETWEEN C68 AND L2
10K
10K
10K
10K
R56
R55
R54
C67
100nF
R53
NOTER? IS A REPLACEMENT FOR WIRE LINK ON BOARD AP12928/7 AND WILL NEED ASS IGNINGA REFDESFUTU RE
47uF16V
220uF16V
TOLK4
C66
0.047uF
L1
47uH
100N COG
R63
100K
3pF
R1
2K2
1K
C6 0.0027uF
C75 0.01uF
C74 47uF16V
R8 10K
C76
47pF
R7 68K
R9 47K
R5 15K
C8
36
35
34
33
32
31
0.015uF
LPFN
LPFO
VCOF
AVSS1
PVREF
VCOREF
30
TMAX
29
TMAXS
28
PDO
27
ZDET
26
NC
HSSW
25
P2VREF
24
TESIO0
23
VDD2
22
NC
MONIT
21
NC
COFS
20
NC
SPDA
18
NC
SPCK
18
NC
SBSY
17
NC
SFSY
16
NC
DATA
15
VSS2
14
VDD1
13
NC
CLCK
12
NC
SBOK
11
NC
IPF
10
NC
MBOV
9
DOUT
8
AOUT
7
BCK
6
VSS1
5
LRCK
4
EMPH
3
NC
UHSO
2
NC
HSO
1
NC
TEST0
CCE
RST
BUCK
TEST498TSMOD
96
99
95
97
100
NC
NC
1uF16V
C13
100N COG
C12
R16
10K
P1
P2
CNPAD EMC M31P3
CNPAD EMC M3
P4
CNPAD EMC M3
1
1
C96
10N COG
C97
10N COG
C93
10N COG
P1
C9
47uF16V
R6
220K
C10
47uF16V
C11
47N COG
R77
200R
R78
200R
D8
1N4148
CNPAD EMC M3
1
47R
R91
200R
R10
200R
R92
4
5
CN2
GND
LRCK
C102
220U16V
R93
47R
+5V
123
CN1
DIGITALOUT
+5V
GND
123
D-OUT
DATAOUT
BCK
EMPH
PCMD
AP20195/5 Servo Circuit Diagram
LK2
24AWG
LK7,5MM24AWG
To enhance viewing, please print to A3 10
Cambridge Audio Azur 740C CD Player
AP20195/5 Servo Board Layout (Top Side)
To enhance viewing, please print to A3 11
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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