Cambridge Audio Amplifier Azur 840C

840C
Issue Date: 07th February 2007
SERVICE MANUAL
SPECIFICATIONS:
D/A Converters
Digital Filter
Analog Filter
Dual Analog Devices
AD1955 24 bit DAC’s
Analog Devices Black Fin
ADSP-BF532 32 bit DSP
Performing ATF™
Up sampling to 24 bit 384 kHz
2 Pole Fully Differential
Linear Phase Bessel Filter
Total correlated jitter
<130pS
Crosstalk @1kHz
<-130dB
Crosstalk @20kHz
<-114dB
Output impedance
<50 ohms
Digital input word
widths supported
16-24 bit
Digital output word
widths supported
16, 20, 24 bit
Frequency Response
20Hz – 20kHz (+\-0.1dB)
Digital input sampling
frequencies supported
32kHz, 44.1kHz,48kHz,88.2kHz
96kHz, 176.4kHz, 192kHz
THD @ 1 KHz 0dBFs
<0.0005%
Digital output sampling
frequencies supported
32 kHz – 192 kHz pass through
(including 44.1 kHz for CD)
48 kHz, 96 kHz, 192 kHz up sampled
THD @ 1Khz -10dBFs
<0.0004%
Audio output up sampling
Fixed 24 bit, 384kHz
THD @ 20 KHz 0dBFs
<0.0007%
Dimensions (H x W x D)
115 x 430 x 360 mm
(4.5 x 16.9 x 14.7”)
IMD (19/20 kHz) 0dBFs
<0.0002%
Weight
8.5kg (18.7lbs)
Linearity @ -90dBFs
+/- 0.5dB
Stopband Rejection
(>24 kHz)
> 120dB
S to N ration, A weighted
>113dB
AP21184/1
Gallery Court Hankey Place London SE1 4BB UK
Tel: +44 (0)20 7940 2200 Fax: +44 (0)20 7940 2233
1
840C SERVICE MANUAL
TABLE OF CONTENTS
Safety Precautions & Important Notes
3
Laser Safety Precautions
4
Exploded Diagram
5
Exploded Diagram Parts List
6
Functional Block Diagram
7
Front Panel Circuit Diagram
8
Front Panel PCB Layout (Top Side)
9
Front Panel PCB Layout (Bottom Side)
10
Front Panel PCB BOM
11
Servo Circuit Diagram (DAC)
12
Servo Circuit Diagram (Servo)
13
Servo PCB Layout (Top Side)
14
Servo PCB Layout (Bottom Side)
15
Servo PCB BOM
16-17
Voltage Select Switch Circuit Diagram
18
Voltage Select Switch PCB Layout (Top Side)
19
Voltage Select Switch PCB Layout (Bottom Side)
20
Voltage Select Switch PCB BOM
21
DAC DSP Circuit Diagram (Abus)
22
DAC Test Signals (Main Signal Paths General)
23
DAC DSP Circuit Diagram (DSP)
24
DAC Test Signals (Main Signal Paths General)
25
DAC DSP Circuit Diagram (Filters)
26
DAC Test Signals (Main Signal Paths Left Channel)
27-28
DAC Test Signals (Main Signal Paths Right Channel)
29-30
DAC DSP Circuit Diagram (Supply)
31
DAC DSP Circuit Diagram (Flash)
32
DAC DSP Board Layout (Top Side)
33
DAC DSP Board Layout (Bottom Side)
34
DAC DSP PCB BOM
35-37
Mains PCB Circuit Diagram
38
Mains PCB Board Layout (Top Side)
39
Mains PCB Board Layout (Bottom Side)
40
Mains PCB BOM
41
IC Pin Layout Details
42-50
Circuit Description
51
Software Instructions
52-61
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
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.
CLASS 1 LASER PRODUCT
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 Azur approved parts only.
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 by
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
To enhance viewing, please print to A3
Exploded Diagram
Cambridge Audio Azur 840C CD Player
5
A P P ar t
PY1228
PY1229
PY1218
PY1219
PY1127
PY1128
PY1110
PY1217
PY940
PY941
PY1220
PY1221
PY1222
PY1223
PY1224
PY1225
PY1226
PY554
PY568
PY1122
PY1124
PY1165
PY1227
D r a wing R e f.
1
1
2
2
3
3
4
5
6
Not Shown
7
7
8
9
9
10
11
12
12
13
13
14
Not Shown
5100-840100E100
9805-084000E001
6074-150004E000A01
6074-150004E000
6564-010006-000A01
6564-010006-000-01
9484-001000E181
9484-001000E041
6574-010002E000A01
6574-010002E000-01
4006-840001E000
8584-001000E301
8584-001010E301
3009-110000-002
9692-006002-201
3200-080551E000
4006-840058E001
6574-150013E000A01
6574-150013E000-01
6574-010003E000-02
6574-010003E000-01
7003-008010E001
7003-008010E006
F a ct or y R e fe r e nce
D e s c r i pt i o n
Exploded Diagram Parts List
Azur 840C Multilingual User Manual (AP18655*)
Azur 840A/C Remote Control Assy Rev A
Azur 840A Plastic Foot (Silver) AP16837*
Azur 840A Plastic Foot (Black) AP16837*
Azur 640C.S CD Door W/Silkscreen PMS Cool Grey 7C
Azur 640C.B CD Door W/Silkscreen PMS Cool Grey 7C
Azur-840C Servo PCBA <T-TYPE> Rev A
Azur-840C Control PCB Assy Rev A
Azur 840C Front Panel-S Artwork (Print Coll Grey 8C) Silver
Azur 840C Front Panel -B Artwork (Print Cool Grey 7C) Black
Azur 840C Display Module MBCF00003B00V0 <RCL>
Azur 840C UK/EU Silver Front Panel Assy
Azur 840C UK/EU Black Front Panel Assy
V2 CD Sanyo Laser DA11V
Azur V2 CD Mechan assy with Sanyo DA11V Rev A
Transformer AC115/230V T08055A<AP19141/4>Azur-840C
840C DAC Module
Azur 840A Side Panel, Silver
Azur 840A Side Panel, (Black)
Azur 840C Top Panel (Silver)
Azur 840C Top Panel (Black)
Screw M3*8 M/C 1/K Torx Recess BLK-PT (Black)
Screw M3*8 M/C 1/K Torx Recess ZN-PT (Silver)
Exploded Drawing Parts List
Cambridge Audio Azur 840C CD Player
6
SPDIF TO LOGIC
LEVEL
U23
ME C H
LOGIC TO SPDIF
LEVEL
U6
OPTICAL
CN5 COAX
U10
CN4
COAX
OPTICAL
SPDIF TO LOGIC
LEVEL
U23
OPTICAL
PSU
U9
U7
44.1/48/96/192 kHz
44.1 kHz FROM CD SERVO
SE RV O PC B
44.1 kHz FROM CD SERVO
U8
48/96/192 kHz UP/DOWN SAMPLED
PASS THRO' SETTING
SPDIF RX MCLK
DIGITAL POT
U4 U5
LCD
AUDIO DATA LEFT
AUDIO DATA LEFT
MICRO TO LCD
(DOT MATRIX)
U2
RELAY
WDCLK
BITCLK
SDATA L
RESET
MUTE
U19 U20
DAC2 MCLK
DAC SET UP I/F
WDCLK
BITCLK
SDATA L
RESET
MUTE
DAC CONTROL I/F
DAC1 MCLK
MICROCONTROLER (PIC)
MICROCONTROLLER/DSP INTERFACE
DSP
FLASH ADDRESS & DATA
FLASH MEMORY
U131
U130
RS232 (LOGIC LEVELS)
MICRO TO LCD
(DOT MATRIX)
U34
I TO V
FRONT PANNEL BUTTONS
MODULATED IR
U37
U38
U33
I TO V
CURRENT SOURCE
CIRCUIT
U53 Q3 Q5
I TO V
I TO V
CURRENT SOURCE
CIRCUIT
U52 Q7 Q9
RL1 RL2 RL3 Q2 Q4 Q8
DAC
DAC
OEI (PIC MUTE)
AUDIO O/P
MUTE CIRCUIT
Functional Block Diagram
DRAWER SPEED
CONTROL
DRAWER OPEN CLOSE CONNECTIONS
U13
U32
KEY COMMANDS TO SERVO (DIGITAL POT FOR RES LADDER I/P)
CD SERVO TO LCD CONNECTIONS
U3
WDCLK
BITCLK
SDATA L
(SPDIF SUBCODE DATA)
U BIT
RESET
SPDIF TX SET UP I/F
WDCLK
BITCLK
SDATA L
(SPDIF SUBCODE DATA)
(SPDIF SUBCODE DATA)
C BIT
U BIT
RESET
SPDIF RX SET UP I/F
DSP CLK
SPDIF I/P SWITCHING CONTROL
AUDIO DATA L&R
SPDIF
TRANSMITTER
U12
AUDIO DATA L&R
SPDIF RECEIVER
U11
K1 K2 I/P
SPDIF TX CLK
44.1 kHz FROM CD SERVO
44.1 kHz PASS THRO' SETTING
SPDIF TX CLK
SPDIF RX MCLK
DAC2 MCLK
DAC1 MCLK
DSP CLK
DRAWER OPEN CLOSE CONNECTIONS
CD SERVO TO MECH CONNECTIONS
SPDIF I/P SWITCHING
SPDIF I/P SWITCHING
CLOCK + BUFFER
24.576 MHz
X1 U15
To enhance viewing, please print to A3
MECH AND SERVO PCB
SPDIF O/P
SPDIF I/P 2
U5
SPDIF I/P 1 CN3
COAX
U4
DAC PCB
Cambridge Audio Azur 840C CD Player
U35
U1
FRONT PANEL IR MOD
U1 U2 U3 Q1
U28
U50
CN13
IR UNMOD
RS232
I/P IR MOD FROM REMOTE
I/P IR MOD
O/P
I/P
BALANCED O/P
CN14
UNBALANCED O/P
CN12
UNBALANCED O/P
BALANCED O/P
FRONT PANEL PCB
DIFFERENTIAL TO SINGLE ENDED
DIFFERENTIAL FILTER/AMP
RIGHT CH
DC SERVO CIRCUIT
U46
U39
U40
DIFFERENTIAL TO SINGLE ENDED
DIFFERENTIAL FILTER/AMP
LEFT CH
DC SERVO CIRCUIT
U41
7
SERVO RESET
1
PAD EMC M3
P1
1
PAD EMC M3
P2
1
PAD EMC M3
P3
1
PAD EMC M3
P4
1
PAD EMC M3
P5
1
2
3
4
5
6
7
CONN-H7
CN1
10OR
CONN-H7
CN4
1
2
3
4
5
6
7
8
R7
C17
C20
C1
1
2
3
4
C16
1nF
C15
1nF
100R
1nF
1nF
1nF
C21
100nF
C12
16
8
L1
DS1803
GND
VCC
L0
W1
SCL
SDA
A1
A0
H0
W0
H1
+8V
A2
1
4
3
U3
+5V_SERVO
LCD
100nF
8
7
6
5
C2
LCD 740C
NC
COM4
COM3
COM2
COM1
SEG18
SEG17
SEG16
SEG15
SEG14
SEG13
SEG12
SEG11
SEG10
SEG9
SEG8
SEG7
SEG6
SEG5
SEG4
SEG3
MCLR
C22
GP1
GP2
GP4
PIC12C508
Vss
GP0
Vdd
CLKIN
U4
+5V_SERVO
1n 50V X7R
1n 50V X7R
SEG1
SEG2
To enhance viewing, please print to A3
To Servo Board
COM1
COM2
COM3
COM4
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
1N4004
D7
SEG0
COM4
COM3
COM2
COM1
LCD Connector 1
100nF
BZX79C5V1 500MW
CN10
1
2
3
4
5
6
7
+8V
C19
680R
R33 680R
R34
1N4004
D3
CN3
1
2
3
4
5
6
7
8
MGND
MGND
1N4004
D6
BZX79C5V1 500MW
CONN-H8
R8
REMOTE
+5V
GND
K1
K2
POWER DETECT
RESET
IR OUT
1
2
3
4
5
CONN-H8
1
2
3
4
5
CN2
DATA
From Servo Board (LCD)
TO MECH DRAWER OPEN/CLOSE (SPI)
CN8
DATA
CN9
FROM SERVO BOARD DRAWER OPEN/CLOSE (SPI)
1N4004
D5
C18
D4
10U 16V
D2
CN5
1 Vss
2 Vo
3 R/W
4 D0
5 D2
6 D4
7 D6
8 LED K
R14
R17
R METAL 1/8W
4k7
1/8W Metal Film
1K2
R METAL 1/8W
4k7
1/8W Metal Film
+5V_SERVO
R16
ON/OFF
CONN-8HEAD DUAL BOT
1a
2a
3a
4a
5a
6a
7a
8a
LED A
LCD Connector 2
300R
R10
PRE MULTI 500R
2
R11
+5V
56R
56R
BC337
R3
Q4
10U 16V
C7
+5V
LED
R4
BC337
Q3
100nF
C4
9
8
7
SPI CS
6
SPI CLK
5
SPI DATA TX
4
SPI INT
3
SPI DATA RX
2
1
JST 2MM S9B-PH-KS
CN6
R25
R21
R15
100K
R35
100nF
C8
R20 100R
100R
R22 100R
R23 100R
100nF
10K
100R
10U 16V
+5V
R24 100R
C10
+5V
100R
R5
100nF
C14
C13
22pF
22pF
BRIGHT
C6
C5
FREQ=20MHz
CRYSTAL
X1
BRIGHT
ON/OFF
RESET
10K
R13
RB5
RB1
RB0/INT
VDD
VSS
RE1/WR/AN6
RC5/SDO
RC7/RX/DT
RD2/PSP2
RD1/PSP1
R METAL 1/4W
220R
1/4W Metal Film
R METAL 1/4W
220R
1/4W Metal Film
40
39
38
37
36
35
LED
34
33 IR IN
32
31
30 MUTE
29 OE1#
28 RESET
27 SERVO RESET
26 SERIAL RX
25 SERIAL TX
24 IR OUT
23 SDA
22 D7
21 D6
R9
220R
220R
R2
BC337
+5V
Q2
R37
PIC16F874A
RD3/PSP3
RC4/SDI/SDA
RD0/PSP0
RC3/SCK/SCL
RC2/CCP1
RC6/TX/CK
OSC2/CLKOUT
RC1/T1OSI/CCP2
RD4/PSP4
OSC1/CLKIN
RCO/T1OSO/T1CKI
RD6/PSP6
RD5/PSP5
VSS
RD7/PSP7
RE0/RD/AN5
RE2/CS/AN7
VDD
RA5/AN4/SS
RB2
RB3/PGM
RB4
RB6/PGC
RA4/T0CKI
RA3/AN3/VREF
RA2/AN2
RA0/AN0
RB7/PGD
10K
RA1/AN1
MCLR/VPP
U2
LED
R36
1
2
3
4
5
6
7
8
RS
9
E
10
11
12
OSC1
13
OSC2
14
U7_SO1 15
U7_S02 16
U9_S01 17
SCL
18
D4
19
D5 20
CLK
SD TX
SD RX
CS
INT
R6
+5V
AP19135/4 Front Panel Circuit Diagram
5
7
6
10
9
14
12
13
BA6218
OUT1
COM
OUT2
VCC
GND2
RIN
GND1
FIN
U5
TO DAC BOARD CN8 (SPI)
Vdd
RS
E
D1
D3
D5
D7
MGND
5
6
7
8
9
1
2
3
Cambridge Audio Azur 840C CD Player
1
3
D1
Q1
BC337
10K
R19
SW1
SW4
Back Skip
100nF
C9
Forward Skip
Stop
SW8
SW6
Open/Close
SW7
+5V
SW2
Menu
Play/Pause
SW5
Select
SW3
Standby
+5V
10K
R12
R26 100R
R27 100R
R28 100R
R29 100R
R30 100R
R31 100R
R32 100R
R1
47R
C11
10U 16V
C3
100n
MUTE
SO1_U9
SO2_U7
SO1_U7
OE1
SERIAL RX
SERIAL TX
CONTROL BUS
1
2
3
4
5
6
7
8
3
2
1
TSOP18 IR RECEIVER
OPT
GND
+5V
U1
JST 2MM S8B-PH-KS
CN7
TO DAC BOARD CN9 (RS232/MUTE/SPDIF CNTRL)
SERVO RESET
RESET
10K
R18
LED 3MM BLUE
8
To enhance viewing, please print to A3
AP19135/3 Front Panel Board Layout (Top Side)
Cambridge Audio Azur 840C CD Player
9
To enhance viewing, please print to A3
AP19135/3 Front Panel Board Layout (Bottom Side)
Cambridge Audio Azur 840C CD Player
10
Cambridge Audio Azur 840C Front Panel PCB BOM
AP Part
No.
Value
RESISTORS
47R
56R
100R
220R
300R
680R
1K2
4K7
10k
100K
PRE MULTI 500R
Description
0.25 W 1% Metal Fil m
0.25 W 1% Metal Fil m
0.25 W 1% Metal Fil m
0.25 W 1% Metal Fil m
0.25 W 1% Metal Fil m
0.125 W 1% Metal Fil m
0.25 W 1% Metal Fil m
0.25 W 1% Metal Fil m
0.25 W 1% Metal Fil m
0.25 W 1% Metal Fil m
Side adjust Footprint 9.5 x 4.5
mm
AP19138/5
Factory Part No
1012-201014E000
1016-801016E020
VR B500 OHM +10% WI
3296NOXOX-XA1013
Qty
Component Ident
1
2
16
4
1
2
1
2
6
1
R1
R3, R4
R5, R7, R8, R20-R3 2
R2, R9, R36, R3 7
R10
R33, R34
R14
R16, R1 7
R6, R12, R13, R15,R18, R1 9
R35
1
R11
C 5, C 6
C 1, C 2, C 15- C 17, C 20, C 21
C3, C4, C8-C10, C12, C14,
C19, C22
Notes
Mount on bottom side of PCB with
screw adjust facing upwards
CAPACITORS
22pF
1nF
C er amic N PO , Pitch = 5. 0mm
C er amic 50V Pitch = 5. 0mm
2
7
100nF
C er amic 50V Pitch = 5. 0mm
9
10uF
Miniature 16V Pitch 2.5mm
Height 5.2mm
4
C7, C11, C13, C18
T SO P1836SS3V
T SO P IR RE C E IV E R
1
U1
Mount 13.5mm height from PCB, Please
support using foam pad spacer
PIC 16F877A- I/P
PIC
1
U2
Programme with AP20058/2, Please add
version label - See AP Service Dept.
DS18030-050
DIGITAL PO T
1
U3
PIC 12C 508A- I/P
PIC
1
U4
BA6218
C D D R IV E R IC
1
U5
NPN SMALL SIGNA L
4
Q1-Q4
1
2
D1
D2, D3
G E N E RAL PU RPO SE RE C T IFIE R
4
D 4, D 5, D 6, D 7
TACT SWITCH
TACT SW 2P2T KPT-1105A
(5MM)
8
SW1-SW8
20MH z C RY ST AL
20MH z, H E IG H T AB O U T 3. 5MM C L 20PF H C - 49U S
1
X1
SEMICONDUCTORS
PY983
PY260
PY214
TRANSISTORS
BC33 7
DIODES
LE D BLU E
5V1 ZENE R
1N 4004
BZX79C5V1
4118-030051E200
1402-511201E20 0
Programme with AP20231/1, Please add
version label - See AP Service Dept
MISCELLANEOUS
PY043
+ - 30PPM
Note: resistors, capacitors and other 'generic' electronic components are
not usually stocked by the manufacturer. Please obtain these locally.
11
2
1
1
2
3
4
5
1nF
C88
1
2
3
4
AGND
AOUTR
CS4333/38
MCLK
VA+
AOUTL
LRCK
DEM/SCL
SDATA
U5
8
7
6
5
C32
10uF 25V
C39
10uF 25V
To enhance viewing, please print to A3
MCLK
CN14
DIG DATA
CN13
+5V
0.1uF
C41
15K
15K
390pF
C42
1N4001
D12
R74
390pF
C38
R80
GND
12K
12K
R72
20K
R79
R73
C33
10pF
6
5
220uF 16V
C37
20K
2
3
R81
C36
10pF
1
47K
NJM2100
7
U4:B
NJM2100
U4:A
47K
0.1uF
C35
C34
10uF 25V
C43
10uF 25V
R90
390R
R88
56K
R71
56K
R70
1K
R68
C55
IN4148
100R
R69
100R
5
4
3
2
1
CN11
47uF 16V
7
8
5
4
MUTE
MUTE1
ROUT
GND
LOUT
100R
330k
D1
R87
R89
AP18432/3 CD Servo PCB Schematic (DAC)
R75
10uF 25V
C40
R82
+8V
14.5V
Cambridge Audio Azur 840C CD Player
8
4
RL1:C
RL1:B
Q6
9012
6
3
560R
R85
3K9
R86
1
2
3
1
2
3
4.7uF 16V
C63
CN10
CN9
D6
IN4004
L.CH
GND
R.CH
L.CH
GND
R.CH
AC
4K7
R84
D7
IN4004
Q5
9012
8050
Q4
R83
8050
Q3
2
1
RL1:A
120R 0.5W
12
CN3
1
2
3
4
5
6
7
8
+5VDD
100uH
L5
+5VCC
1K
R20
10uF 16V
C82
C84
220uF 16V
+5V
100uH
C83
470uF 16V
L4
1N4148
D9
3K3
R19
C81
25pF
X2
CRYSTAL
7.3728MHz
C85
100uF 16V
SEG7
R18
10K
R76
4K7
VDD
NC
NC
NC
VLC
COM0
COM1
COM2
COM3
SEG0
SEG1
SEG2
SEG3
SEG4
SEG5
SEG6
U3
TOSHCDMCU
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
(WAIT)
NC
(SO2)
NC
(SI2)
NC
REMOTE
SEG17
TEST
SEG15
NC
SEG14
RESET
SEG13
XIN
SEG12
XOUT
SEG11
VSSS
C80
25pF
9014C
Q13
REMOTE
C79
100nF
+5V
10K
R65
R17 10K
R66 2K2
100nF
C86
CEE
BUCK
BUS0
BUS1
BUS2
BUS3
D-CLOSE
D-OPEN
SLT
CLT
OLT
NC
NC
PWR DET
AD K3
AD K2
AD K1
VAREF
(BOOT)
VSS
+5VDD
50
49
48
47
46
45
44
43
NC
42
NC
41
40
39
38
37
36
35
34
33
32
31
R39
10K
L3
100uH
To enhance viewing, please print to A3
PROGRAMMING
+5V
RESET
BOOT
GND
WAIT
SCK2
SI2
SO2
22K
R21
NC
R22
NC
MUTE
SEG9
NC
NC
SEG8
NC
NC
SEG10
SEG16
NC
NC
NC
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
NC
98
NC
99
NC
100
SEG18
NC
NC
+5V
NC
SCK2
+5V
10K
R26
LINK
OPEN = F/L
SHORT = T/L
FL/TL
CORW
LCD
NC
NC
NC
NC
NC
SET LCD CONTRAST
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
80
79
78
77
76
75
74
73
72
71
70
69
68
67
66
65
64
63
62
61
60
59
58
57
56
55
54
53
52
51
VDD
RES
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
1K
LK1
4K7
R32
R35
R16
10K
D8
R36
1N4148
47uF 16V
0.047uF
C13
C29
1uF 16V
C12
R40
5
4
3
2
1
CN1
1
2
3
RST
TSMOD
TEST4
CCE
BUCK
VSS
VDD
BUS3
BUS2
BUS1
BUS0
TEST3
TEST2
TEST1
DVSL
LO
DVR
DVDD
RO
XTALI
CN17
XTALO
CN18
CN12
MUTE
+5V
C87
1nF
5
4
3
2
1
DVSR
DIGITAL OUT
D-OUT
+5V
GND
1
2
1
2
1
2
CN20
Q12
8050
C15
0.047uF
Q7
8050
81
82
83
84
85
86
87
NC
88
NC
89
NC
90
91
92
93
94
95
96
97
98
NC
99
NC
100
10R 1/4W
15pF
DATA OUT
CN2
R37
R38
C16
Q8
8050
15pF
X1
CRYSTAL
16.9344MHz
C17
GND
LRCK
PCMD
BCK
EMPH
R64
10K
+5V
D11
1N4148
D10
1N4148
R28
10K
+5V
GND
OSC
GND
MUTE
MUTE1
ROUT
GND
LOUT
Q11
8050
470R
C19
0.047uF
R29
10K
+5V
C27
C26
CN8
R41
3K3
0.047uF
0.047uF
R44
C25
C24
DRAW DRIVE
5
4
3
2
1
R42
3K3
3K3
470pF
470pF
CLT
GND
OLT
CLOSE
OPEN
TC9462F
R10
47R
C11
0.047uF
LPFN
LPFO
PVREF
VCOREF
VCOF
AVSS1
SLCO
RFI
AVDD1
RFCT
RFZI
RFRP
FEI
SBAD
TSIN
TEI
TEZI
FOO
TRO
VREF
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
47uF 16V
C10
R6
220K
C8
0.015uF
U2
R43
10K
47uF 16V
C9
C76
47pF
R45
3K3
AC
3K3
3K3
R47
1
2
R46
AC IN
CN19
47uF 16V
C70
C23
C77
0.047uF
47uF 16V
100nF
C54
D2
0.047uF
C5
D5
100nF
C53
0.01uF
C7
C78
47uF 16V
IN4004
IN4004
D3
D4
C73
R3
1K
100pF
IN4004
IN4004
C51
C71
R63
100K
C1
3pF
2K2
220R
C2
0.22uF
C72
R4
0.22uF
100nF
R61
C3
C4
100nF
C49
R1
10K
R2
100nF
T2AL
FU1
100nF
C52
14.5V
100nF
AP18432/3 CD Servo PCB Schematic (Servo)
10K
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
10K
10K
R25
NO FIT FOR 740/840C
10K
10K
1
2
3
4
5
6
7
8
XVDD
TEST0
SEG3
SEG2
SEG1
SEG0
COM3
COM2
COM1
COM0
XO
HSO
R23
10K
R15
R34
XVSS
EMPH
Q10
8550
VDD4
LRCK
R24
10K
R14
NC
PXO
VSS1
Q9
8550
PXI
BCK
R33
VSS4
AOUT
470R
TESIO1
DOUT
R27
10K
TESIN
MBOV
LCD
IO3
VDD1
CN4
IO2
VSS2
+5V
22uF 16V
R67
14mm link(840c only)
IO1
DATA
1
2
3
4
5
6
7
8
IO0
SFSY
CN5
VSS3
SBSY
LCD
VDD3
SPCK
SEG11
SEG10
SEG9
SEG8
SEG7
SEG6
SEG5
SEG4
XI
UHSO
NC
NC
NC
47uF 16V
R31
10K
FLGD
SPDA
+8V
DACT
IPF
C14
R30
10K
FLGC
COFS
CONTROL KEYS
FLGA
VDD2
1
2
3
4
5
6
7
SEL
TESIO0
CN6
2VREF
P2VREF
SEG18
SEG17
SEG16
SEG15
SEG14
SEG13
SEG12
CKSE
SBOK
C28
+5V
DMO
HSSW
REMOTE
+5V
GND
K1
K2
PWR DET
RESET
TEBC2
ZDET
CN7
TEBC1
PDO
7
6
5
4
3
2
1
DMOUT
CLCK
NC
NC
NC
NC
R13
NC
NC
NC
NC
NC
NC
NC
47uF 16V
C18
NC
NC
NC
NC
FLGB
MONIT
NC
NC
NC
NC
NC
NC
NC
R12
NC
TEBC0
TMAXS
80
79
78
77
76
75
74
73
72
71
70
69
68
67
66
65
64
63
62
61
60
59
58
57
56
55
54
53
52
51
RFGC
TMAX
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
18
20
21
22
23
24
25
26
27
28
29
30
NC
47uF 16V
C74
REMOTE
15K
0.01uF
C75
R11
Cambridge Audio Azur 840C CD Player
47K
R5
68K
R7
R9
10K
R8
0.0027uF
C6
0.047uF
C22
CN21
1
100nF
27K
C21
0.0047uF
VI
7808
U7
FP DIS
3300uF 25V
C50
1
2
GND
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
2
TEO
FPI
RFN2
GND
RFO
TA2153FN
VCC
RFGC
GMAD
FNI
GVSW
AGCIN
TPI
TNI
MDI
PKC
RFGO
RFRPIN
SEL
LDO
TEB
TEN
SBAD
2VRO
BTC
RFCT
RFRP
SEB
VRO
FEO
3
FEN
U1
1K
R60
VO
L1
47uH
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
100nF
C48
0.047uF
C66
R59
82K
470uF 16V
C47
+8V
220uF 16V
C65
C60
0.047uF
47uF 16V
C20
C61
100nF
C59 100nF
10K
10K
10K
R54
R53
10K
OUT(-)4
VIN3
VIN2
PVCC2
PW GND
OUT(-)2
15R
R62
Q1
9015
100nF
R57
R48
R49
R50
R51
R52
100uF 16V
100nF
C62
PVCC3
OUT(-)3
PW GND
220uF 16V
C56
TA2092N
OUT(+)3
S GND
VCI
OUT(+)2
VIN4
S VCC
VIN1
OUT(+)4
PVCC4
PW GND
PVCC1
VRI
OUT(+)1
3
C45
100nF
PW GND
VO
OUT(-)1
U6
C69
C64
1
2
3
4
5
6
7
8
9
10
11
12
VI
U8
7805
R55
R56
C67
100nF
+8V
C44
100nF
1
GND
2
24
23
22
21
20
19
18
17
16
15
14
13
56K
47K
47K
47K
47K
56K
10uH
L2
+5V
C46
470uF 16V
22uF
C68
R58
C58
100nF
C57
100nF
J1
100R
0R
CN15
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
MECH
CN16
FCTRTR+
FC+
PD
VR
LD
GND
F
C
B
A
D
E
VCC
VC
SLTSLT+
FM+
FMDMDM+
MOTOR DRIVE
6
5
4
3
2
1
13
To enhance viewing, please print to A3
AP12927/8 CD Servo Board Layout (Top Side)
Cambridge Audio Azur 840C CD Player
14
To enhance viewing, please print to A3
AP12927/8 CD Servo Board Layout (Bottom Side)
Cambridge Audio Azur 840C CD Player
15
Cambridge Audio Azur 840C Servo PCB Assembly BOM
AP Part
No
Value
Description
AP19969/3
Qty
Component Ident
Factory Part no
Notes
RESISTORS
10R
15R
link
47R
0. 25 W Metal Film Resistor
0.125 W Metal Film Resistor
14mm link
0. 125 W Metal Film Resistor
1
1
1
1
R40
R62
R67
R10,
1011- 000014- 000
100R
0.125 W Metal Film Resistor
1
wirelink ( J1 )
1011-001016-000
220R
470R
1K
2K 2
3K3
4K 7
0. 125 W Metal Film Resistor
0. 125 W Metal Film Resistor
0.125 W Metal Film Resistor
0. 125 W Metal Film Resistor
0.125 W Metal Film Resistor
0. 125 W Metal Film Resistor
1
2
5
2
7
2
10K
0.125 W Metal Film Resistor
26
15K
22K
27K
47K
56K
68K
82K
100K
220K
0. 125 W Metal Film Resistor
0.125 W Metal Film Resistor
0.125 W Metal Film Resistor
0.125 W Metal Film Resistor
0.125 W Metal Film Resistor
0. 125 W Metal Film Resistor
0.125 W Metal Film Resistor
0.125 W Metal Film Resistor
0.125 W Metal Film Resistor
1
1
1
5
2
2
1
1
1
R4
1012- 201018- 000
R33, 34
1014- 701016- 000
R3, 20, 25, 60
1011-002018-000
R1, 66
1012- 202016- 000
R19, 41, 42, 44, 45, 46, 47
1013-302018-000
R32, 76
1014- 702016- 000
R2, 8, 11, 12, 13, 14, 15, 16, 17,
18, 26, 27, 28, 29, 30, 31, 39, 43, 1011-003016-000
53, 54, 55, 56, 64, 65
R5,
1011- 503018- 000
R21
R61
R9, 48, 49, 50, 51
1014-703016-000
R52, 57
R7,
1016- 803018- 000
R59
1018-203018-000
R63
1011-004016-000
R6
1012-204016-000
3pF
15pF
25pF
47pF
100pF
470pF
1nF
10nF
10nF
15nF
Ceramic COG 50V 5mm Pitch
Ceramic COG 50V 5mm Pitch
Ceramic COG 50V 5mm Pitch
Ceramic COG 50V 5mm Pitch
Ceramic COG 50V 5mm Pitch
Ceramic 50V 5mm Pitch
C er amic 50V 5mm Pitch
Ceramic 50V 5mm Pitch
Mylar 5mm Pitch
Ceramic 50V 5mm Pitch
1
2
2
1
1
2
1
1
1
1
47nF
Ceramic 50V 5mm Pitch
11
100nF
Ceramic 50V 5mm Pitch
20
220nF
2n7
4n7
1uF
10uF
22uF
Ceramic 50V 5mm Pitch
Mylar 5mm Pitch
Mylar 5mm Pitch
16V Electrolytic
16V Electrolytic
16V Electrolytic
2
1
1
1
1
2
47uF
16V Electrolytic
10
100uF
220uF
470uF
3300uF
16V Electrolytic
16V Electrolytic
16V Electrolytic
25V Electrolytic
2
3
3
1
For 840C O N L Y . U se link
1014- 700018- 000
wirelink is positioned
between C68 and L2. This
must be 100R resistor
CAPACITORS
C1
C16, 17
1100-150043-000
C80, 81
1100-250042-000
C76
1100-470043-000
C73
C24, 25
1100-471043-000
C 87
1100- 102043- 000
C75
1100-103043-000
C7
C8
1100-153043-000
C5, 11, 13, 15, 19, 22, 23, 26, 27,
1100-473044-000
60, 66
C2, 4, 44, 45, 48, 49, 51, 52, 53,
54, 57, 58, 59, 61, 62, 64, 67, 71, 1106-104044-000
79, 86
C3, 72
1100-224044-000
C6
1101- 272063- 000
C 21
1101- 472062- 000
C12
1102-107044-000
C82
1102-100024-000
C14, 68
1102-220014-000
C9, 10, 18, 20, 28, 29, 70, 74, 77,
1102-470014-000
78
C69, 85
1102-101014-000
C56, 65, 84
1102-221014-000
C46, 47, 83
1102-471014-000
C50
1102-332024-000
SEMICONDUCTORS
PY474
TA2153FN
PY475
TC9462FG
TOSHIBA RF Amplifier
TOSHIBA Digital Servo-chip
Processor
1
U1
1
U2
4121-530103-000
4194- 620123- 000
100PIN S Q FP T O SH IB A
Note: resistors, capacitors and other 'generic' electronic components are
not usually stocked by the manufacturer. Please obtain these locally.
16
Cambridge Audio Azur 840C Servo PCB Assembly BOM
AP Part
No
Value
Description
AP19969/3
Qty
Component Ident
Factory Part no
PY565
TOSHCDMCU
MCU TMP87EP26F-1J15 SOP
TOSHIBA
1
U3
4187- 260103- 000
PY 473
T A2092N
T O SH IB A Power dr iver IC
1
U6
4120- 920053- 000
PY 316
7808
T O - 220 + 8V Regulator
1
U7
4178- 080302- 600
PD 035
PY014
PY558
PY 559
PY 560
7805
C8050D
9014C
C 8550
9015C
1N4148
1N4004
T O - 220 + 5V Regulator
NPN Transistor TO92
NPN Transistor
PN P T r ansistor
PN P T r ansistor
Signal Diode
Rectifier Diode
1
U8
4
Q7, 8, 11, 12
1
Q13
2
Q 9, 10
1
Q1
3
D9, 10, 11
4
D2, 3, 4, 5
4178- 050334- 700
1300-805000-100
1300-901400-100
1301- 855000- 100
1301- 901500- 100
1401-141480-000
1401-140040-000
Notes
fit heatsink to top of driver
IC
mount on heatsing using
heatsink comound only
stand up off PCB by 7.5mm
CRYSTALS
PY 027
PY 561
16. 9344MH z
7. 3728MH z
2 Pin 5mm Pitch
2 Pin 5mm Pitch
1
1
X1
X2
1600- 169343- 000
1600- 737282- 990
2mm Pitch JST
2mm Pitch JST
2mm Pitch JST
2mm Pitch JST
2mm Pitch JST
2mm Pitch JST
2. 5mm Pitch JST
FFC 1. 0mm Pitch
2
1
2
1
2
3
1
1
C N 17 21
C N 1,
C N 2, 8,
C N 15
C N 6, 7
C N 3, 4, 5
C N 19
C N 16
2300- 002000- 001
2300- 003000- 001
2300- 005000- 000
2300- 006000- 000
2300- 007000- 000
2300- 008000- 000
2300- 002100- 003
2301- 016901- 000
20mm
PC B Mount Fuse H older
1
FU 1
4031- 050100- 001
T2AL
2A delay 20mm Fuse 250V LBC
(low breaking capacity)
1
FU 1
4030- 618002- 001
10uH
Inductor 8mm Pitch
1
L2
47uH
Inductor 8mm Pitch
1
L1
1504- 470300- 100
100uH
Inductor 8mm Pitch
3
L 3, 4, 5
1504- 101300- 100
CONNECTORS
2 W ay
3 W ay
5 W ay
6 W ay
7 W ay
8 W ay
2 W ay
16 W ay
MISCELLANEOUS
Note: resistors, capacitors and other 'generic' electronic components are
not usually stocked by the manufacturer. Please obtain these locally.
17
VOLTSELECT RF1002B
115/230V Marking
FROM J4 (Common)
To enhance viewing, please print to A3
AP17977/2 Voltage Select Switch PCB Schematic
BLACK (115V)
J3
BROWN (230V)
J1
SW1
J2
Cambridge Audio Azur 840C CD Player
18
AP17977/2 Voltage Select Switch Board Layout (Top Side)
To enhance viewing, please print to A3
Cambridge Audio Azur 840C CD Player
19
AP17977/2 Voltage Select Switch Board Layout (Bottom Side)
To enhance viewing, please print to A3
Cambridge Audio Azur 840C CD Player
20
AP17980/1
Cambridge Audio Azur 840C V2 Voltage Selector PCB Assembly BOM
AP Part
No
Value
Description
Qty
Component Ident
Factory Part Number
Notes
CONNECTORS
RF1002B
V oltage Selector
1
SW 1
2406- 010200- 000
Note: resistors, capacitors and other 'generic' electronic components are
not usually stocked by the manufacturer. Please obtain these locally.
21
3
1
3
1
2
3
1
2
AV-8,4-8ES
1
2
CN5
APTX179AT
GND
INPUT
VCC
U10
2
AV-8,4-8ES
2
1
CN4
APRX179AT
VCC
GND
OUTPUT
U5
1N 50V NPO SM
0805
3
AV-8,4-8ES
1
2
100N 50V CER
C279
100N 50V CER
C278
APRX179AT
VCC
GND
CN3
C11
C13
C17
100R 0805
R16
100R 0805
R17
C273 position
75R
0805
R19
100R
0805
R32
6
U6:C
4
U6:B
2
U6:A
74VHC14
VCC=+5V_DIG
5
74VHC14
VCC=+5V_DIG
3
74VHC14
VCC=+5V_DIG
1
12
13
+5V_DIG
2
5
1K
0805
3
100N 50V Y5V SM
0805
10
U6:E
4
9
11
12
+5V_DIG
74VHC14
VCC=+5V_DIG
9
100R 0805
R33
3.3V
16
9
7
14
15
8
10
11
12
13
6
5
4
3
2
1
VCC
2Y
1Y
SO
2E
U9
VCC
2Y
1Y
SO
2E
100N 50V Y5V SM
0805
C20
74HCT153
GND
2-IN0
2-IN1
2-IN2
2-IN3
1-IN0
1-IN1
1-IN2
1-IN3
S1
1E
100N 50V Y5V SM
0805
C19
74VHC153
GND
2-IN0
2-IN1
2-IN2
2-IN3
1-IN0
1-IN1
1-IN2
1-IN3
S1
1E
U7
16
8
10
11
12
13
6
5
4
3
2
1
C215
C222
100N 50V Y5V SM
0805
3.3V
9
100N 50V Y5V SM
0805
7
14
15
10K
0805
R27
10K
0805
R26
5
fs = 48kHz min
11
spdif input pass through
fs = 44.1kHz
3
8
servo spdif pass through
fs = 44.1kHz
6
74VHC32
VCC=3.3V
U8:A
SO2_U9
2
1
SO1_U7
SERVO_SPDIF_OUT
10
7
11
8
6
9
CS8406_TXP
CS8416_RXP0
VCC=3.3V
U8:D
VCC=3.3V
U8:C
VCC=3.3V
U8:B
0R 0805
R28
12
13
9
10
5
4
100R
0805
R85
100R
0805
R66
1
2
IR IN
IR OUT
SERIAL_RX
SERIAL_TX
100N 50V X7R SM
0805
C145
3
2
1
3
+5V
4
5
6
100R
0805
R70
100R
0805
R71
C146
4
5
9
12
10
11
100N 50V X7R SM
0805
1
3
U1
+5V
400K
+5V
400K
R2OUT
R1OUT
T2IN
T1IN
C2-
C4
T1
T1
R3
R1
R1
5K
5K
R2IN
R1IN
T2OUT
T1OUT
V-
V+
8
13
7
14
6
2
10uF 16V
C3
6
5
9
4011
VDD=+5V
VSS=GND
4011
VDD=+5V
VSS=GND
4011
VDD=+5V
VSS=GND
D1
100N 50V X7R SM
0805
C148
100N 50V X7R SM
0805
C147
BC817-16 SM
Q1
10K
0805
8
13
12
CA IR DEMODULATOR
R5
+5V
U28
MAX202 SM
10K
0805
R4
0805
10K
+5V
1
2
100N 50V X7R SM
0805
C2+
C1-
36 kHz
TSOP1836 IR RECEIVER
C1+
4011
VDD=+5V
VSS=GND
U3:A
47R
0805
R9
OP4N25
need to assign package
NC
U2
100R 0805
R6
100N 50V Y5V SM
0805
C163
220R 0805
R1
3.3V
SERVO_SPDIF_OUT_3.3V
100N 50V X7R SM
0805
C144
AV2-8,4-14/EC
CN1:A
5
AP19129/4 DAC DSP Circuit Diagram (ABus)
8
4
100R0805
R25
SO1_U9
U6:F
2
100R 0805
R24
VCC=+5V_DIG
8
1
U23:F
VCC=+5V_DIG
U23:B
74VHC14
VCC=+5V_DIG
100N 50V Y5V SM
0805
C161
R29
C162
6
10
3
VCC=+5V_DIG
U23:E
1
74HCU04
11
VCC=+5V_DIG
U23:C
VCC=+5V_DIG
U23:A
0805
+5V_DIG
1
12
VCC=+5V_DIG
R23
10K
13
U23:D
0805
R21
10K
74VHC14
VCC=+5V_DIG
U6:D
1K
0805
R65
100R
0805
R22
100R
0805
R20
To enhance viewing, please print to A3
100N 50V X7R SM
0805
C275
0805
91R
R31
100N 50V X7R SM
0805
C14
430R
100N 50V X7R SM
0805
0805
C21
10U 16V EL
C26
47UH SM
L4
+5V_DIG
10U 16V EL
C10
47UH SM
L3
+5V_DIG
75R
0805
100N 50V X7R SM
0805
C12
10U 16V EL
C8
47UH SM
L2
SEE DAC TEST SIGNALS LIST
FOR SIGNAL DESCRIPTION
OPT
INDICATES TEST POINT REF
GND
+5V_DIG
R18
C274 position
100R
0805
C18
OUTPUT
C22
47P 50V Y5V SM
0805
47P 50V Y5V SM
0805
U4
C24
1N 50V NPO SM
0805
C23
C7
100P 50V Y5V SM
0805
C9
100P 50V Y5V SM
0805
100N 50V Y5V SM
0805
3
100N 50V Y5V SM
0805
3
100N 50V Y5V SM
0805
100N 50V Y5V SM
0805
100P 50V Y5V SM
0805
C201
C202
MULTIPLEXER 1
MULTIPLEXER 2
+5V
1
2
3
16
VCC
GND
Cambridge Audio Azur 840C CD Player
MULTIPLEXER 2
15
4
U3:B
10
U3:C
11
U3:D
K
A
IR IN
1N 50V NP0 SM
0805
C5
JACK-CKX-3.5-12
C1
C2
C6
2R2
0805
R8
IR OUT
RS232
CONN-9W D-TYPE
CN2
1N 50V NP0 SM
0805
9
8
7
6
5
4
3
2
1
AV2-8,4-14/EC
CN1:B
4
0805
3
CN100
3.5mm JACK
1N 50V NP0 SM
100N 50V X7R SM
0805
100R
0805
R7
220R
0805
R10
0805
R15
100R
5
IR receiver
MULTIPLEXER 1
22
Page
1
1
1
1
1
1
1
1
1
1
1
1
Test Point
Schematic Ref
1
2
3
4
5
6
7
8
9
10
11
12
AP19129/5 DAC Test Signals (Main Signal Paths General)
5V C ontinuous ser ial data signal
SPD IF coax/optical O /P
U 9 pin 7
‘scope
‘scope
3V 3 C ontinuous ser ial data signal
SPD IF signal fr om SPD IF T X ( fr om D SP)
U 9 pin 4
D igital
D igital
‘scope
3V3 Continuous serial data signal
‘scope
SPDIF signal from CD servo 3V3 pass thro’ (CD playback & Pass thro’ selected)
3V 3 C ontinuous ser ial data signal
U9 pin 5
SPD IF signal fr om C D ser vo to SPD IF RX ch 2 ( to D SP)
Digital
U 8 pin 6
D igital
‘scope
5V C ontinuous ser ial data signal
SPD IF signal fr om C D ser vo ( C D playback selected)
U 8 pin 4
D igital
‘scope
3V 3 C ontinuous ser ial data signal
SPD IF signal after I/P selection to SPD IF RX ch 0 ( to D SP)
U 9 pin 3
‘scope
D igital
3V 3 C ontinuous ser ial data signal
SPD IF coax I/P 1 or 2 ( I/P 1 or 2 selected)
U 8 pin 2
‘scope
D igital
3V 3 C ontinuous ser ial data signal
‘scope
‘scope
‘scope
‘scope
Meter
Type
U 8 pin 1
SPD IF optical I/P 1 or 2 ( I/P 1 or 2 selected)
5V C ontinuous ser ial data signal
SPD IF coax 2 I/P after level conver t
U 7 pin 12
5V C ontinuous ser ial data signal
SPD IF optical 2 I/P
U 7 pin 4
5V C ontinuous ser ial data signal
5V C ontinuous ser ial data signal
Measur ement
SPD IF coax 1 I/P after level conver t
SPD IF optical 1 I/P
D escr iption
U 7 pin 13
U 7 pin 3
Measurement
Node
D igital
D igital
D igital
D igital
D igital
Signal
Type
Cambridge Audio Azur 840C CD Player
23
U20:B
VCC=+5V
6
5
3
74HCT125
VCC=+5V
U20:A
11
C165
100N 50V X7R SM
0805
C29
VCC=+5V
U20:D
MISO
2
12
10U 16V EL
C36
R132
R38
9
12
5
2
100R 0805
0805 100R
INTREQ
10U 16V EL
3.3V
1K
C27
0805 10K
R41
100R 0805
R40
17
U19:A
6
VCC=3.3V
8
U19:C
VCC=3.3V
11
U19:D
VCC=3.3V
U19:B
VCC=3.3V
3
74VHC125
RXP0
X1
3.3V
DSP RESET
SS
2
TEST
U15:A
CS8406
3.3V
R88
10K
0805
R87
10K
0805
3.3V
5
6
7
8
1
2
3
4
5
6
7
8
9
10
11
12
13
14
13
11
9
5
3
74VHC14
74VHC14
74VHC14
74VHC14
74VHC14
6
U15:E
100R 0805
R45
100R 0805
R44
100R 0805
R43
12
8
7
6
5
10K 0805
100R 0805
R42
100R 0805
U15:D R46
10
8
U15:F
R39
100R
R63
100R
R62
0805
24.576MHz
1
2
3
4
U15:B
U15:C
4
SCHMITT INVERTER
18 19 20
SDIN
ISCLK
TEST
TCBL
RST
TEST
TEST
TEST
TEST
ILRCK
INT
OMCK
U
TEST
GND
VD
RXP
VL
AD2
TEST
TXN
H/S
AD0/CS
SDA/CDOOUT
TXP
AD1/CDIN
SCL/CCLK
AD1/CDIN
74VHC14
VCC=OSC_3.3V
1
AD2/GPO2
GPO2
GPO0
VL
DGND
VD
RMCK
OMCK
SDOUT
SDA/CDOUT
SCL/CCLK
U12
24.576MHz
28
27
26
25
24
23
22
21
20
19
18
17
16
15
CS8416
AD0/CS
RXP7
RXP6
RXP5
RXP4
RST
FILTER
AGND
VA
RXN
100N 50V X7R SM
R60
0805
21
100R
3.3V
10P 50V Y5V SM
0805
C41
10U 16V EL
4
3
2
1
VCC
3.3V
3
3
2
1
C96
100N 50V X7R SM
0805
C77
BAS16 75V 0,3A
D16
10U 35V EL
C149
0R 1206
R2
5
6
7
8
33R
C78
100N 50V X7R SM
0805
10U 35V EL
C143
1.2V DSP
3.3V DSP
100N 50V X7R SM
0805
10K
0805
R135
0805
100N 50V X7R SM
HEADER 3WAY
0R 1206
C76
100N 50V X7R SM
0805
CN11
R89
1.2V
R49
5
6
7
8
33R
4
3
2
1
HW/SW
BAS16 75V 0,3A
D15
R36
RST
0805
GND
GND
GND
GND
GND
GND
PF6/SPISEL6/PPI13
100R
R50
10K 0805
R56
100N 50V X7R SM
0805
C79
1 FUNCTIONAL
0 MODE
PF7/SPISEL7/PPI12
PF8/PPI11
PF9/PPI10
PF10/PPI9
PF11/PPI8
PF12/PPI7
VDDEXT
GND
PF13/PPI6
PF14/PPI5
PF15/PPI4
PPI3
VDDINT
PPI2
PPI1
PPI0
PPI_CLK
VDDEXT
GND
VDDRTC
RTXI
RTXO
GND
NMI
RESET
VDDEXT
XTAL
CLKIN
GND
GND
GND
VDDEXT
VROUT1
VROUT2
GND
GND
GND
33R
R53
33R
R55
AP19129/4 DAC DSP Circuit Diagram (DSP)
MUTE_PIC
2
DS1818
U21
R61 100R
C75
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
GND
PF0/SPISS
RXP1
To enhance viewing, please print to A3
U_MISO
U20:C
9
VCC=+5V
+5V
8
U_RESET
U_SS
U_SCLK
U_MOSI
+5V_OSC
CS8406_TXP
0805
R34
C30
3.3V
CLKOUT
VDDINT
10K
GND
VDDEXT
10N 50V X7R SM
0805
C93 0805
100N 50V X7R SM
VDDINT
SCK
100R
SA10
VDDEXT
R37
GND
PF4/SPISEL4/PPI15
28
27
26
25
24
23
22
21
20
19
18
17
16
15
ARDY
DT1PRI
OSCLK
AMS0
TFS1
RXP2
AMS1
TSCLK1
13
SCKE
PF3/SPISEL3/PPI_FS3
4
3
2
1
CS_FLASH#
AMS3
AMS2
DR1SEC
OLRCK
VDDINT
RFS1
RXP3
AOE
DT0SEC
U11
GND
PF5/SPISEL5/PPI14
SMS
PF2/SPISEL2
5
6
7
8
4
3
2
1
0805
C94 0805
100N 50V X7R SM
VDDEXT
PF1/SPISEL1/TMRCLK
I2S ERR
3.3V
1
2
3
4
5
6
7
8
9
10
11
12
13
14
AWE
TFS0
1
2
3
4
ADDR1
TSCLK0
R35
ADDR2
DR0SEC
8
7
6
5
GND
TMR2
14
SRAS
MISO
C81
16
VDDINT
TMR1
15
BR
DT1SEC
100N 50V X7R SM
0805
C31
10
VDDEXT
RCLK1
33R
R59
5
6
7
8
10U 16V EL
U_INTREQ
C169
ADDR10
CS8416_RXP0
0805
ABE0
GND
R58
R57
1K
1K
C83
C33 0805
100N 50V X7R SM
C74
ARE
DT0PRI
100N 50V X7R SM
0805
C28
4
8
ADDR7
TX
SERVO_SPDIF_OUT_3.3V
100N 50V X7R SM
100N 50V X7R SM
0805
13
1
4
13
GND
VDDINT
C82
0805
0805
4
3
2
1
100N 50V Y5V SM
0805
1
100N 50V X7R SM
0805
10
SCAS
MOSI
SS_1
C80 0805
100N 50V X7R SM
SCK_1
DSP_MISO_1
DSP_MOSI_1
5
6
7
8
5
CLK
SWE
GND
4
3
2
1
100N 50V X7R SM
WE_FLASH#
ABE1
VDDEXT
5
6
7
8
8
7
6
5
C92 0805
100N 50V X7R SM
C91 0805
100N 50V X7R SM
OE_FLASH#
DR1PRI
5
6
7
8
4
3
2
1
VCC
N/C
1
GND
4
ADDR3
DR0PRI
33R
R54
I2S DATA
I2S FRAME
1
C168
ADDR8
RX
SEE DAC TEST SIGNALS LIST
FOR SIGNAL DESCRIPTION
100N 50V X7R SM
VDDEXT
RSCLK0
I2S ERR
C32
10P 50V Y5V SM
0805
C38
ADDR6
VDDINT
C84
10U 16V EL
C167
A1
A2
A3
A4
ADDR4
RFS0
100N 50V X7R SM
0805
4
3
2
1
1
2
3
4
Cambridge Audio Azur 840C CD Player
10P 50V Y5V SM
0805
C40
C90 0805
100N 50V X7R SM
C89 0805
100N 50V X7R SM
ADDR5
TMR0
33R 0805
R153
C166
10P 50V Y5V SM
0805
C39
ADDR9
EMU
100N 50V X7R SM
0805
INDICATES TEST POINT REF
0805
C88
1 BOOT
0 MODE
ADSP-BF532
132
131
130
129
128
127
126
125
124
123
122
121
120
119
118
117
116
115
114
113
112
111
110
109
108
107
106
105
104
103
102
101
100
99
98
97
96
95
94
93
92
91
90
89
3.3V DSP
GND
GND
GND
GND
VDDEXT
TCK
BMODE1
BMODE0
GND
DATA15
DATA14
DATA13
DATA12
DATA11
DATA10
DATA9
DATA8
GND
VDDEXT
DATA7
DATA6
DATA5
VDDINT
DATA4
DATA3
DATA2
DATA1
DATA0
GND
VDDEXT
BG
BGH
ADDR19
ADDR18
ADDR17
ADDR16
ADDR15
ADDR14
ADDR13
GND
GND
GND
GND
GND
U13
100N 50V X7R SM
0805
4K7
0805
R52
GND
1
A5
A6
A7
A8
A9
A10
A11
A12
ADDR11
TMS
VDDEXT
TD0
ADDR12
TD1
GND
GND
45
46
47
48
49
50
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
81
82
83
84
85
86
87
88
TRST
176
175
174
173
172
171
170
169
168
167
166
165
164
163
162
161
160
159
158
157
156
155
154
153
152
151
150
149
148
147
146
145
144
143
142
141
140
139
138
137
136
135
134
133
10K
0805
R130
C97
10P 50V Y5V SM
0805
C37
10K
R51
BITCLK
WDCLK
SDATA_L
SDATA_R
CS_DAC1
CS_DAC2
MUTE
RELAY
RESET
DAC1_MCLK
DAC2_MCLK
MOSI
SCK
3.3V DSP
100N 50V X7R SM
0805
C86
100N 50V X7R SM
0805
CONN-7HEAD DUAL
JTEG
CN6
8
7
6
5
C87
100N 50V X7R SM
0805
C95
1
2
3
4
0R 0805
0R 0805
100N 50V X7R SM
0805
C85
R64
R30
2
4
6
8
10
12
14
1
3
5
7
9
11
13
D5
D6
D7
D0
D1
D2
D3
D4
A13
A14
A15
A16
A17
A18
24
2
2
2
2
2
2
2
2
14
15
16
17
18
19
20
21
D igital
Digital
Digital
Digital
D igital
Digital
Digital
R44/C 38
U12 pin 12
U12 pin 13
‘scope
3V3 square wave 44.1kHz (for 44.1kHz
sample freq from CD)
AP19129/5 DAC Test Signals (Main Signal Paths General)
D SP Master clock
3V 3 24. 576MH z squar e wave
‘scope
‘scope
3V3 square wave 48kHz (for 48kHz
sample freq from DSP)
To SPDIF TX Digital audio Word CLK ( CD selected With disc playing)
‘scope
3V3 square wave 3MHz (for 48kHz
sample freq from DSP)
To SPDIF TX Digital audio Bit CLK (CD selected With disc playing &
Upsample frequency set to 48kHz)
‘scope
3V3 Continuous serial data signal
‘scope
‘scope
3V3 square wave 2.8MHz (for 44.1kHz
sample freq from CD)
3V 3 24. 576MH z squar e wave
‘scope
‘scope
Meter
Type
3V3 Continuous serial data signal
3V 3 24. 576MH z squar e wave
Measur ement
To SPDIF TX Digital audio Data (SPDIF I/P or CD With disc playing)
SPD IF T X master clock
U 12 pin 21
U12 pin 14
From SPDIF RX Digital audio Word CLK ( CD selected With disc playing)
From SPDIF RX Digital audio Bit CLK ( CD selected With disc playing)
From SPDIF RX Digital audio Data (SPDIF I/P or CD With disc playing)
SPD IF RX master clock
D escr iption
U11 pin 28
U11 pin 27
U11 pin 26
U 11 pin 25
D igital
Digital
Measurement
Node
Signal
Type
To enhance viewing, please print to A3
2
13
Test Point
Page
Schematic Ref
Cambridge Audio Azur 840C CD Player
25
5
6
7
8
10U NP 35V
100R
47N 16V ECHU SM
1206
C228
47N 16V ECHU SM
1206
C48
4
3
2
1
40
47N 50V ECHU SM
-5V(2)
DAC2 _VA_+5V
R150
C220
5
6
7
8
4
3
2
1
C122
1N 50V NP0 0603
0603
C123
1N 50V NP0 0603
0603
To enhance viewing, please print to A3
MUTE
RESET
DAC2_MCLK
SCK
CS_DAC2
MOSI
100R
R149
+5V_DAC
C99
SDATA_R
BITCLK
WDCLK
DAC2 _VA_+5V
BYG10G
D26
22
DVDD
41 42 43
BYG10G
DAC1_VA_+5V
D25
BYG10G
4
3
2
1
D28
100R
R148
D27
+5V_DAC
5
6
7
8
BYG10G
MUTE
RESET
DAC1_MCLK
SCK
CS_DAC1
MOSI
C151
10N 50V ECHU SM
LRCLK
DGND
DVDD
C98
DSD_LDATA
MUTE
DSD_SCLK
10U NP 35V
BCLK
CCLK
MCLK
LRCLK
DGND
+5V_DAC
SDATA/EF_LDATA
CLATCH
BCLK
CCLK
MCLK
100R
EF_RDATA
CDATA
EF_RDATA
CDATA
4
3
2
1
DSD_SCLK
PD/RST
SDATA/EF_LDATA
CLATCH
R147
DSD_RDATA
PD/RST
5
6
7
8
DSD_PHASE
ZEROR
ZEROL
DSD_LDATA
SDATA_L
BITCLK
WDCLK
IOUTR+
IOUTL+
DSD_PHASE
DSD_RDATA
ZEROL
MUTE
C158
C229
47N 16V ECHU SM
1206
C230
47N 16V ECHU SM
1206
-5V(2)
1N 50V NP0 0603
0603
0603
C206
1N 50V NP0 0603
0603
C73
45
2V8_VREF_R
44
220pF 50V X7R SM
1N 50V NP0 0603
-5V
-5V
1N 50V NP0 0603
0603
C72
27
2V8_VREF_L
26
220pF 50V X7R SM
C207
47N 16V ECHU SM
1206
C234
47N 16V ECHU SM
-5V
OPA842
3
2
300R
46
R76
-15V
1206
6
U34
6
U33
1206
54
53
36
47N 16V ECHU SM
1206
C232
29
35
47N 16V ECHU SM
1206
C231
10pF 50V NPO 0603
C172
300R
DAC2 _VA_+5V
2
3
OPA842
-5V(2)
OPA842
3
300R
DAC2 _VA_+5V
R75
2
C173
0603
+15V
10pF 50V NPO 0603
1N 50V NP0 0603
0603
C198
1206
6
U37
6
U38
10pF 50V NPO 0603
C190
1N 50V NP0 0603
C199
R102
DAC1_VA_+5V
2
3
OPA842
28
300R 1206
DAC1_VA_+5V
R101
C191
10pF 50V NPO 0603
1N 50V NP0 0603
0603
C181
1N 50V NP0 0603
0603
C180
R77
C188
1N5 63V PP
180p 63V PP
-VR
7
49
R82
2K4 1206
R79
180p 63V PP
100R 1206
R74
R73
100R 1206
C176
PWR PAD
-15V
1206
R83
PWR PAD
-15V(2)
OPA1632
5
4
U39
+15V
Q9
C235
OPA1632
5
4
U35
+15V(2)
R98
52
1
-15V(2)
47N 16V ECHU SM
1206
C233
+15V(2)
56
55
51
2
3
47R
47R
C214
1N 50V NP0 0603
0603
R97
C205
1206
+VR
12K MELF
0805
R127
50
2K0 MELF
0805
R91
47R
1206
R92
R134
2K7 MELF
0805
0R NF
0603
R94
0603
C208
C265
6
OPA2134
3
2
U41:A
C266
3
0R
0603
R180
0R
0603
R181
100P 50V NP0 SM
0805
ME2-5S
RL1:B
100P 50V NP0 SM
0805
ME2-5S
RL1:C
-15V
8
4
5
7
1
C209
10V_R
6
C267
C268
3
100P 50V NP0 SM
0805
ME2-5S
RL2:B
100P 50V NP0 SM
0805
ME2-5S
RL2:C
-15V(2)
OPA2134
3
2
U46:A
+15V(2)
C260
-15V
-15V(2)
100K
0805
R175
100K
0805
R176
OPA2134
3
2
R178
100K
0805
100N 50V X7R SM
0805
C186
-15V(2)
47N 16V ECHU SM
+
3
-
GND
3
C264
ME2-5S
RL3:B
R157
+
7
8
7
C269
6
R90
C182
100K
0805
U46:B
2K
1206
R162
5
6
2K
1206
R114
47R
0805
10K
1206
R156
1M MELF
0805
10K
1206
AV2-8,4-13EL
1
3
100K
0805
C242
C256
57
OPA2134
3
2
U40:A
-15V
OPA2134
3
2
U50:A
47R
1206
5K
1206
R171
10K
1206
R172
-15V(2)
47N 16V ECHU SM
C258
47N 16V ECHU SM
1206
C259
47R
1206
R104
R173
+15V(2)
5K
1206
R113
10K
1206
R155
39
47N 16V ECHU SM
1206
C255
47N 16V ECHU SM
1206
47P 50V NP0 SM
CN12:B
1
R169
R179
-15V(2)
OPA2134
7
U50:B
+15V(2)
47P 50V NP0 SM
OPA2134
5
6
1
R129
AV2-8,4-13EL
1
2
C239
+15V
47P 50V NP0 SM
OPA2134
7
U40:B
R112
CN12:A
-15V
+15V
47P 50V NP0 SM
R174
2K
1206
R111
5
6
2K
1206
470N 50V X7R SM
100P 50V NP0 SM
0805
ME2-5S
RL3:C
10R 1206
1206
R187
2K
1206
R116
2K
1206
- R115
47R MELF
0805
C257
10R 1206
1206
R186
2K
1206
R100
2K
1206
R99
C238
1M MELF
0805
R158
100P 50V NP0 SM
0805
4
5
100N 50V X7R SM
0805
C277
1
WL5032 XLR MALE
R177
100K
0805
1
C276
47N 16V ECHU SM
CN14
1M MELF
0805
GND
C187
-
+15V(2)
+
5
6
U41:B
WL5032 XLR MALE
CN13
7
R128
2
C184
220N 50V X7R SM
47N 16V ECHU SM
C261
47N 16V ECHU SM
1M MELF
0805
R126
12K MELF
0805
R159
+15V
+15V(2)
220N 50V X7R SM
0R
0603
R183
0R 0603
R182
47N 16V ECHU SM
-VR
-15V
10V_L
+15V
470N 50V X7R SM
+15V
C262
4
5
7
8
1
0R
0603
R120
0R
R119
47N 16V ECHU SM
C263
47R MELF
0805
C204
R93
0R
0603
47N 16V ECHU SM
47N 16V ECHU SM
10V_R
1206
1N 50V NP0 0603
0603
C203
1206
R117
47R
R118
2K0 MELF
0805
R123
R125
-VL
32
2K7 MELF
0805
R103
10V_L
OPA2134
OPA2134
5
6
33
U53:A
47N 16V ECHU SM
C178
BC807-25 SM
Q5
330R MELF
0805
38
37
47N 16V ECHU SM
C196
34
U52:B
7
BC807-25 SM
47N 16V ECHU SM
1206
2K7 1206
R84
C177
R124
330R MELF
0805
BC807-25 SM
Q3
2K7 1206
R110
180p 63V PP
1
9
8
2K7
OPA2134
C194
1206
R109
C195
1
9
8
R96
U53:B
R81
5
6
+VR
Q7
330R MELF
0805
48
100R 1206
R69
100R 1206
R122
330R MELF
0805
BC807-25 SM
2K7
IL-
180p 63V PP
31
R68
OPA2134
1
U52:A
2K4 1206
2K0 MELF
0805
R95
2K7 MELF
0805
R78
820R 1206
1N5 63V PP
C174
820R 1206
R80
47
1N5 63V PP
C185
R108
2K4 1206
R105
820R 1206
1N5 63V PP
C192
R107
2K4 1206
-VL
R106
3
2
+VL
30
820R 1206
2K0 MELF
0805
R121
2K7 MELF
0805
8
4
C15
DAC1_VA_+5V
IL+
AP19129/5 DAC DSP Filters Circuit Diagram
C171
C170
10U 25V NP
C154
10U 25V NP
C54
DAC2 _VA_+5V
3K MELF
0805
R48
47N 16V ECHU SM
1206
C139
47N 16V ECHU SM
1206
C67
DAC1_VA_+5V
10U 25V NP
C156
10U 25V NP
C152
DAC1_VA_+5V
3K MELF
0805
R47
DAC2 _VA_+5V
RIGHT
AD1955
U131
47N 50V ECHU SM
C56
10U 25V NP
C55
LEFT
AD1955
U130
47N 50V ECHU SM
10U 25V NP
C159
47N 50V ECHU SM
23 24 25
FILTR
IOUTRIOUTL-
IL-
8
4
SEE DAC TEST SIGNALS LIST
FOR SIGNAL DESCRIPTION
IOUTRIOUTL-
IOUTL+
IL+
IR+
8
4
8
4
1
IREF
AVDD
IREF
AVDD
0805
10R
1
2
3
4
5
6
7
8
9
10
11
12
13
14
AGND
AGND
AGND
AGND
ZEROR
C157
C155
FILTB
28
27
26
25
24
23
22
21
20
19
18
17
16
15
IOUTR+
1
2
3
4
5
6
7
8
9
10
11
12
13
14
FILTR
FILTB
28
27
26
25
24
23
22
21
20
19
18
17
16
15
7
4
4
8
5
5
8
8
47N 50V ECHU SM
C53
C153
47N 50V ECHU SM
47N 50V ECHU SM
IR-
1
1
1
1
8
4
2
3
6
7
C179
47U 25V EL
7
7
4
4
7
5
5
8
+
INDICATES TEST POINT REF
IR+
R168
R170 10R 0805
8
4
LEFT O/P
8
4
4
47U 25V EL
C175
8
4
8
4
8
4
+VL
RIGHT O/P
IR2
3
6
7
8
Cambridge Audio Azur 840C CD Player
8
4
4
1nF 50V X7R SM
C210
4
-
RIGHT O/P
LEFT O/P
26
4
4
4
4
4
4
4
4
4
4
4
4
4
22
23
24
25
26
27
28
29
30
31
32
33
34
Test Point
Page
Schematic Ref
U 52 pin 7
U 52 pin 6
C ur r ent sour ce r ef voltage
C ur r ent sour ce r ef voltage
AP19129/5 DAC Test Signals (Main Signal Paths Left Channel)
V oltage
V oltage
V oltage
C ur r ent sour ce r ef voltage
C ur r ent sour ce r ef voltage
U 52 pin 2
V oltage
C ur r ent sour ce r ef voltage
3. 3V dc
voltmeter
voltmeter
voltmeter
4. 0V dc
4. 0V dc
voltmeter
voltmeter
voltmeter
voltmeter
voltmeter
voltmeter
‘scope
‘scope
‘scope
‘scope
Meter T ype
3. 3V dc
4. 0V dc
4. 0V dc
2. 8V dc
Mid r ail D C voltage r ef
U 52 pin 5
U 52 pin 3
V oltage
2. 8V dc
Mid r ail D C voltage of - ve cur r ent O /P of D AC
C ur r ent sour ce r ef voltage
U 37 pin 3
V oltage
3V3 pulses to 0V repetition rate
384kHz.
To DAC1 Digital audio Word CLK (CD selected With disc
playing)
2. 8V dc
3V3 square wave 12.288MHz
To DAC1 Digital audio Bit CLK (CD selected With disc
playing)
Mid r ail D C voltage of + ve cur r ent O /P of D AC
3V3 Continuous serial data signal
3V 3 24. 576MH z squar e wave
Measur ement
To DAC1 Digital audio Data (SPDIF I/P or CD With disc
playing)
T o D AC 1 master clock
D escr iption
U 52 pin 1
U 37 pin 2
V oltage
V oltage
U 38 pin 2
U130 pin 2
U130 pin 3
U130 pin 4
U 130 pin 27
Measur ement N ode
V oltage
Digital
Digital
Digital
D igital
Signal T ype
Cambridge Audio Azur 840C CD Player
27
4
4
4
4
36*
37*
38
39*
THD meter
Voltage/Analogue
U 40 pin 7
Less than 5mV dc
O/P unbalanced stage dc voltage / ac waveform / THD
measurement (CD selected With disc playing 1kHz 0dB FS 1kHz sine wave 6.3V p-p 2.2Vrms
tone)
approx 0.0006% THD +N (22K
BW )
approx 0.001% THD+N (22K
BW )
(0.0006% THD +N (22K BW) bal
a/c pins 4 & 5 U39 )
AP19129/5 DAC Test Signals (Main Signal Paths Left Channel)
THD meter
scope
voltmeter
THD meter
THD meter
‘scope
measurement (CD selected With disc playing 1kHz 0dB FS
tone)
1kHz sine wave 6.3V p-p 2.2Vrms
U 39 pin 5
THD meter
THD meter
THD meter
voltmeter
approx 0.001% THD+N (22K
BW )
(0.0006% bal THD +N (22K BW)
a/c pins 4 & 5 U39 )
scope
Less than 5mV dc
measurement (CD selected With disc playing 1kHz 0dB FS
tone)
Voltage/Analogue
U 39 pin 4
1kHz sine wave 6.3V p-p 2.2Vrms
THD meter
0.02% THD+N (22K BW)
Voltmeter’scope
scope
1kHz sine wave 2V p-p
voltmeter
THD meter
0.02% THD+N (22K BW)
Approx -0.45V dc
‘scope
voltmeter
Approx -0.45V dc
1kHz sine wave 2V p-p
Meter T ype
Measur ement
THD meter
Current to voltage O/P -ve dc voltage / ac waveform /
THD measurement (CD selected With disc playing 1kHz
0dB FS tone)
Current to voltage O/P +ve dc voltage / ac waveform /
THD measurement (CD selected With disc playing 1kHz
0dB FS tone)
D escr iption
Less than 5mV dc
U 37 pin 6
U38 pin 6
Measur ement N ode
Voltage/Analogue
THD meter
Voltage/Analogue
Voltage/Analogue
Signal T ype
*THD Measurements: Measurements taken using Audio Precision System 1 with X1 1M scope prob
4
35*
Test Point
Page
Schematic Ref
Cambridge Audio Azur 840C CD Player
28
U 53 pin 2
U 53 pin 1
V oltage
V oltage
V oltage
V oltage
V oltage
V oltage
V oltage
4
4
4
4
4
4
4
4
4
4
4
4
42
43
44
45
46
47
48
49
50
51
52
U 53 pin 3
4. 0V dc
C ur r ent sour ce r ef voltage
3. 3V dc
4. 0V dc
C ur r ent sour ce r ef voltage
C ur r ent sour ce r ef voltage
3. 3V dc
C ur r ent sour ce r ef voltage
4. 0V dc
C ur r ent sour ce r ef voltage
U 53 pin 6
U 53 pin 7
4. 0V dc
C ur r ent sour ce r ef voltage
2. 8V dc
Mid r ail D C voltage r ef
U 33 pin 3
U 53 pin 5
2.8V dc
Mid rail DC voltage of -ve current O/P of DAC
2.8V dc
3V3 pulses to 0V repetition rate
384kHz.
To DAC1 Digital audio Word CLK (CD selected With
disc playing)
Mid rail DC voltage of +ve current O/P of DAC
3V3 square wave 12.288MHz
3V3 Continuous serial data signal
To DAC1 Digital audio Bit CLK (CD selected With disc
playing)
To DAC2 Digital audio Data (SPDIF I/P or CD With
disc playing)
3V 3 24. 576MH z squar e wave
Measur ement
U34 pin 2
U33 pin 2
U131 pin 2
U131 pin 3
U131 pin 5
T o D AC 2 master clock
D escr iption
AP19129/5 DAC Test Signals (Main Signal Paths Right Channel)
Voltage
Voltage
Digital
Digital
Digital
U 131 pin 27
41
D igital
4
Measurement
Node
40
Signal Type
Page
Test Point
Schematic Ref
Cambridge Audio Azur 840C CD Player
voltmeter
voltmeter
voltmeter
voltmeter
voltmeter
voltmeter
voltmeter
voltmeter
voltmeter
‘scope
‘scope
‘scope
‘scope
Meter T ype
29
4
4
4
4
4
53
54 *
55 *
56 *
57 *
THD meter
Voltage/Analogue
THD meter
Voltage/Analogue
THD meter
Voltage/Analogue
THD meter
Voltage/Analogue
Voltage/Analogue
Signal Type
U 50 pin 7
U 35 pin 5
U 35 pin 4
U 34 pin 6
U33 pin 6
Measurement
Node
O/P unbalanced stage dc voltage / ac waveform / THD
measurement (CD selected With disc playing 1kHz 0dB
FS tone)
THD measurement (CD selected With disc playing
1kHz 0dB FS tone)
THD measurement (CD selected With disc playing
1kHz 0dB FS tone)
Current to voltage O/P -ve dc voltage / ac waveform /
THD measurement (CD selected With disc playing
1kHz 0dB FS tone)
Current to voltage O/P +ve dc voltage / ac waveform /
THD measurement (CD selected With disc playing
1kHz 0dB FS tone)
D escr iption
1kHz sine wave 6.3V p-p
2.2Vrms
approx 0.0006% THD +N (22K
BW )
Less than 5mV dc
1kHz sine wave 6.3V p-p
2.2Vrms
approx 0.001% THD+N (22K
BW
(0.0006% THD +N (22K BW)
bal a/c pins 4 & 5 U35 )
Less than 5mV dc
1kHz sine wave 6.3V p-p
2.2Vrms
approx 0.001% THD+N (22K
BW )
(0.0006% THD +N (22K BW)
bal a/cpins 4 & 5 U35 )
THD meter
scope
voltmeter
THD meter
THD meter
scope
voltmeter
THD meter
THD meter
scope
Voltmeter’scope
THD meter
0.02% THD+N (22K BW)
Less than 5mV dc
scope
1kHz sine wave 2V p-p
voltmeter
THD meter
0.02% THD+N (22K BW)
Approx -0.45V dc
scope
Voltmeter’scope
Approx -0.45V dc
1kHz sine wave 2V p-p
Meter T ype
Measur ement
AP19129/5 DAC Test Signals (Main Signal Paths Right Channel)
*THD Measurements: Measurements taken using Audio Precision System 1 with X1 1M scope prob
Page
Test Point
Schematic Ref
Cambridge Audio Azur 840C CD Player
30
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
9
1
2
3
100N 50V X7R SM
0805
C164
100R 0805
R72
8
7
6
5
R151
100R
1
2
3
4
+5V
SERVO_SPDIF_OUT
STANDBY CONTROL
U_RESET
U_SS
U_SCLK
U_MOSI
U_INTREQ
U_MISO
IR OUT
SERIAL_TX
SERIAL_RX
OE1
SO1_U7
SO2_U9
SO1_U9
MUTE_PIC
To enhance viewing, please print to A3
2MM 3W ST HEADER
CN7
2MM 9W ST HEADER
CN9
2MM 8W ST HEADER
CN8
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
IO3
A2
A3
A5
A4
AT49BV002AN
A0
A1
A6
1/O0
A7
A12
IO2
Vcc
IO1
IO4
WE
A15
IO5
A17
GND
IO6
A14
A16
IO7
A13
RESET
CE
A9
A8
OE
A10
A11
U32
C160
100N 50V X7R SM
0805
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
D2
D1
D0
A1
A2
A3
A4
OE_FLASH#
A11
CS_FLASH#
D7
D6
D5
D4
D3
1N4001
D17
R144
1U 35V EL
C212
100K
0805
2K2
0805
8K2 0805
0805
R143
R145
1N4001
D18
10K
0805
R142
AP19129/5 DAC DSP Flash Circuit Diagram
A17
A16
A13
A8
A7
A6
A5
A12
A10
A9
A14
A15
A18
WE_FLASH#
3.3V DSP
AC_5V
Cambridge Audio Azur 840C CD Player
R141
4K7
0805
BC807-25 SM
Q8
4K7
0805
10K
0805
R146
R131
BC807-25 SM
Q2
1N4148
D20
10K
0805
R154
1N4148
D19
MPSA14
Q4
1N4004
D29
RELAY
ME2-5S
2
RL3:A
1
high = unmute = relay on
low = mute
high = unmute
ME2-5S
OE1
2
ME2-5S
RL1:A
1
2
RL2:A
1
62R 2W
R140
+10V UNREG
C270
470U 16V EL
31
1N 50V NP0 SM
0805
C189
1N 50V NP0 SM
0805
C183
1N 50V NP0 SM
0805
C68
F4
100N 50V X7R SM
0805
C117
1
PAD EMC M3
P1
POLYFUSE 1-1A 60V
F5
POLYFUSE 1-1A 60V
47R
R152
1N4002
Q6
1N4002
D6
1N4002
D4
1N4002
MPSA14
32R 2W
R160
+10V UNREG
AC_5V
1N4002
D10
1N4002
D13
1N4002
D11
1N4002
D14
1N4002
D12
RECTIFIER CHANGE TO SCHOTTKY
1N4002
D5
1N4002
D3
RECTIFIER CHANGE TO SCHOTTKY
POLYFUSE 3.0A 60V
F3
C61
To enhance viewing, please print to A3
1
PAD EMC M3
P4
1
PAD EMC M3
P3
1
PAD EMC M3
P2
F2
POLYFUSE 1-1A 60V
33N 250V
100N 100V
1N4002
2200U 35V EL
C42
D9
C57
10K
0805
R161
1N4004
D30
0R 2W
U49
VI
7815
100N 50V X7R SM
0805
C45
R86
-21V UNREG(2)
Q18
1
VI
TIP31
7805
7915
U24
VI
100N 50V X7R SM
0805
2
C109
100N 50V X7R SM
0805
C103
100N 50V X7R SM
0805
100N 50V X7R SM
0805
VI
C108
1
7815
U22
C49
3
C50
VO
3
VO
C106
3
VO
3
47N 16V ECHU SM
C107
47N 16V ECHU SM
VO
10K
0805
R166
BC817-25
Q13
5.1V
D24
TIP31
Q10
3
47N 16V ECHU SM
100U 35V EL
C16
VO
47N 16V ECHU SM
BC817-25
Q11
470R
1206
3
Q12
R163
U31
10K
0805
R165
100N 50V X7R SM
0805
C138
BC817-25
VI
U16
7915
C133
C102
+21V UNREG (2)
10K
0805
10K
0805
R167
220R 2W
R133
470R
1206
2
100N 50V X7R SM
0805
C52
100N 50V X7R SM
0805
1
U14
VO
C51
R164
100N 50V X7R SM
0805
100N 50V X7R SM
0805
VI
100U 35V EL
-15V
+15V
+5V
-15V(2)
+15V(2)
47N 16V ECHU SM
C244
BYG10G
D2
100U 35V EL
C105
100U 35V EL
C104
47N 16V ECHU SM
C249
BYG10G
D22
(RIGHT)
VI
7805
U17
D21
3
1
VI
VI
VI
2
7905
U48
VI
BYG10G
D23
100N 50V X7R SM
0805
C124
1
100N 50V X7R SM
0805
C114
VI
7905
U47
LM1117T_3
U26
2
BYG10G
VO
C63
3
7805
U27
C126
3
VO
47R 1206
1206
1
+5V_DAC
3.3V
10U 35V EL
C247
-5V(2)
10U 35V EL
VO
3
+5V_OSC
C132
10U 35V EL
C246
SHDN
VI
C69
C216
BYP
VI
ADJ
VO
10N 50V X7R SM
0805
LT1761 ADJREG
U42
VO
5
4
1.2V
4
5
3
3
1
5
4
LM1117T_3
1.2V
VI
VI
3K3
0805
R138
22K
0805
10V_R
C112
R137
3K3
0805
R136
C224
3
2
C142
100N 50V X7R SM
0805
C237
VO
10U 35V EL
SHDN
VI
1.2V
+5V_DIG
10U 35V EL
C135
47N 16V ECHU SM
C225
3
1
LT1761 2,8VREG
U45
OSC_3.3V
SHDN
VI
LT1761 2,8VREG
U43
47N 16V ECHU SM
C218
3
1
VI
100N 50V X7R SM
0805
C110
1
U25
7805
DAC2 Vd = 44mA
100N 50V X7R SM
0805
VO
7805
U36
10U 35V EL
22K
0805
10V_L
R139
100N 50V X7R SM
0805
C236
U18
ADJ
VO
DSP Vint 150mA
ADJ
LT1763 ADJ REG
U30
100N 50V X7R SM
0805
47N 16V ECHU SM
3
1
1
2
BYP
VI
100N 50V X7R SM
0805
OSCILLATOR
C193
C223
10N 50V X7R SM
0805
LT1761 ADJREG
U44
47N 16V ECHU SM
3
1
DAC1 & DAC2 Vd = 44mA
C272
47N 16V ECHU SM
3
C248
VI
7815
U51
100N 50V X7R SM
0805
VO
R185
7805
U29
C116
3
2
-5V
10U 35V EL
C271
10U 35V EL
C221
DAC1 Vd = 44mA
C65
logic gates = 5mA
dir & dit = 25mA
DSP Vext = 120mA
etc = 60mA
3
100N 50V X7R SM
0805
VO
VO
VO
47N 16V ECHU SM
47R 1206
1206
C245
DAC1_VA_+5V
R184
47N 16V ECHU SM
ANALOGUE SUPPLY
100N 50V X7R SM
0805
C62
RS232
ABUS
optical Tx/Rx = 30mA
logic gates = 4mA
pic circuitry = 100mA
BC817-25
Q17
100U 35V EL
C137
100U 35V EL
C46
C64
10U 35V EL
1
AP19129/5 DAC DSP Supply Circuit Diagram
2R2 2W
R67
2R2 2W
R14
LOW - STANDBY
HIGH - ON
link
R13
10U 35V EL
C241
C240
GND
2
7815
1
GND
2
C43
+10V UNREG
-21V UNREG
+21V UNREG
audio o/p mute relay
2R2 2W
R12
2R2 2W
R11
2200U 35V EL
C59
C35
C58
C136
2,5MM 10W ST HEADER
100N 100V
2200U 35V EL
C71
2200U 35V EL
D8
C47
D7
100N 50V X7R SM
0805
100N 100V
100N 100V
C34
C60
C44
C100
C101
33N 250V
100N 100V
10U 35V EL
GND
2
1
GND
POWER
C254
C66
10U 35V EL
RECTIFIER CHANGE TO SCHOTTKY
C253
10U 35V EL
C141
F1
100N 50V X7R SM
1206
10U 35V EL
POLYFUSE 1-1A 60V
100N 50V X7R SM
1206
C128
100N 50V X7R SM
0805
2200U 35V EL
C70
C118
C120
STANDBY CONTROL
2200U 35V EL
2200U 35V EL
2200U 35V EL
GND
2
C115
C125
C130
10
9
8
7
6
5
4
3
2
1
C121
C140
100N 50V X7R SM
0805
C213
10N 50V ECHU SM
C129
10U 35V EL
10U 35V EL
GND
1
GND
2
10U 35V EL
1
C251
100N 50V X7R SM
0805
C127
GND
2
CN10
C119
2200U 35V EL
2200U 35V EL
C25
GND
100N 50V X7R SM
0805
GND
2
1
GND
100U 35V EL
GND
10U 35V EL
C252
GND
2
C131
10U 35V EL
C243
100N 50V X7R SM
0805
GND
1
GND
2
10U 35V EL
C134
GND
2
C217
C211
C150
100N 50V X7R SM
0805
10U 35V EL
GND
2
1
GND
GND
2
GND
BYP
VO
2
10U 35V EL
GND
2
VO
VO
3
C111
4
5
4
5
47N 16V ECHU SM
BYP
2V8_VREF_L
10N 50V X7R SM 0805
C226
C200
10U 35V EL
C250
DAC2 _VA_+5V
47N 16V ECHU SM
C197
(LEFT)
47N 16V ECHU SM
10U 35V EL
C113
2V8_VREF_R
C227
Cambridge Audio Azur 840C CD Player
10N 50V X7R SM 0805
C219
10U 35V EL
32
To enhance viewing, please print to A3
AP19129/4 DAC DSP Board Layout (Top Side)
Cambridge Audio Azur 840C CD Player
33
To enhance viewing, please print to A3
AP19129/4 DAC DSP Board Layout (Bottom Side)
Cambridge Audio Azur 840C CD Player
34
AP19132/6
Cambridge Audio Azur 840C DAC PCB Assembly BOM
A P P ar t N o
V a lue
D e s c r i pt i o n
F a c t or y P a r t N o
Q ty
C o m po n e n t I d e n t
Resistors
220R
0R
Resistor 0. 063W
Resistor 0. 125W
2
4
R1, R10
R2, R89, R186, R187
10K
Resistor 0. 063W
23
R3-R5, R21, R23, R26, R27, R37, R39, R41, R56, R86-R88,
R130, R135, R142, R146, R154, R161, R165-R167
100R
Resistor 0. 063W
26
2R2
47R
32R 2W
2R2 2W
2K 2
75R
0R
1K
430R
91R
100R
33R
3K
10K
4K 7
47R
300R
2K 7
820R
2K 4
2K 7
2K
0R
2K
330R
10K
5K
12K
1M
220R 2W
3K 3
22K
62R 2W
100K
8K 2
47R
33R
47R
100R
470R
10R
Capacitors
10pF 50V
10pF 50V
47P 50V
100P 50V
220pF 50V
Resistor 0. 063W
Resistor 0. 063W
Resistor 2W C ar bon
Resistor 2W C ar bon
Resistor 0. 063W
Resistor 0. 063W
Resistor 0. 063W
Resistor 0. 063W
Resistor 0. 063W
Resistor 0. 063W
Resistor pack
Resistor pack
Resistor ME L F type 0. 2W
Resistor pack
Resistor 0. 063W
Resistor 0. 125W
Resistor 0. 125W
Resistor ME L F type 0. 2W
Resistor 0. 125W
Resistor 0. 125W
Resistor 0. 125W
Resistor 0. 125W
Resistor 0. 063W
Resistor ME L F type 0. 2W
Resistor ME L F type 0. 2W
Resistor 0. 125W
Resistor 0. 125W
Resistor ME L F type 0. 2W
Resistor ME L F type 0. 2W
2W C ar bon
Resistor 0. 063W
Resistor 0. 063W
2W C ar bon
Resistor 0. 063W
Resistor 0. 063W
0. 25W metal film
Resistor 0. 063W
Resistor ME L F type 0. 2W
Resistor 0. 125W
Resistor 0. 125W
Resistor 0. 063W
1
2
1
4
1
2
3
5
1
1
10
6
2
1
3
8
4
4
4
4
4
8
4
4
4
4
2
2
4
1
2
2
1
7
1
1
1
2
4
2
2
R6, R7, R15, R16, R17, R20, R22, R24, R25, R33, R38, R40,
R42-R46, R61, R66, R70-R72, R85, R132,C273 position,
C274 position
R8
R9, R129
R160
R11, R12, R14, R67
R145
R18, R19
R28, R30, R64
R29, R34, R57, R58, R65
R31
R32
R35, R50, R60, R62, R63, R147- R151
R36, R49, R53- R55, R59
R47, R48
R51
R52, R131, R141
R91, R92, R104, R117, R118, R172, R184, R185
R75, R76, R101, R102
R77, R78, R103, R134
R79, R80, R105, R106
R81, R82, R107, R108
R83, R84, R109, R110
R90, R99, R100, R111, R114- R116, R162
R93, R120, R181 R183
R95, R97, R121, R123
R96, R98, R122, R124
R112, R155, R169, R173
R113, R171
R127, R159
R126, R128, R156, R158
R133
R136, R138
R137, R139
R140
R143, R174- R179
R144
R152
R153
R125, R157
R68, R69, R73, R74
R163, R164
R168, R170
N PO
N PO
N PO
N PO
N PO
C er amic
C er amic
C er amic
C er amic
C er amic
4
5
6
9
2
C 172, C 173, C 190, C 191
C 37- C 41
C 201, C 202, C 238, C 239, C 256, C 257
C 17, C 18, C 22, C 264- C 269
C 206, C 207
150pF 63V PP
Polypr opelene
4
C 176, C 177, C 194, C 195
1N 50V
N PO C er amic
12
1N 50V
N P0 C er amic
9
C72, C73, C122, C123, C170, C171, C180, C181, C198,
C199, C203, C214
C 1, C 5, C 6, C 11, C 13, C 68, C 183, C 189, C 210
1N 5 63V PP
Polypr opelene
4
C 174, C 185, C 188, C 192
10N 50V
33nF 250V
X 7R C er amic
C er amic or Polyester
5
2
C 30, C 216, C 219, C 223, C 226
C 61, C 101
47N 16V
EC H U
51
C15, C48, C49, C50, C53, C56, C63, C67, C106, C107,
C111, C139, C151, C153, C155, C157, C158,C178, C186,
C187, C193, C196, C197, C200, C204, C205, C218, C220,
C221, C225, C228-C235, C242, C244, C245, C248, C249,
C255, C258-C263
100N 50V
X 7R C er amic
21
C 75- C 84, C 86- C 96
N ot e s
Rated cur r ent 2A Sur ge cur r ent 10A
mount on for med leads above PC B
mount on for med leads above PC B
mount on for med leads above PC B
mount on for med leads above PC B
7.2 X 4.5 ( If different manufacturer please
send sample)
7.2 X 4.5 ( If different manufacturer please
send sample)
Note: resistors, capaciotrs and other'generic' electronic componetents are
not usually stocked by the manufacturer. Please obtain these locally.
35
AP19132/6
Cambridge Audio Azur 840C DAC PCB Assembly BOM
A P P ar t N o
V a lue
D e s c r i pt i o n
F a c t or y P a r t N o
Q ty
C o m po n e n t I d e n t
N ot e s
C2, C4, C7, C9, C12, C14, C21, C19, C20, C23, C24, C27,
C28, C29, C32, C33, C43, C45, C47, C51, C52, C62, C69,
C74, C85, C97, C102, C103, C108-C110, C114, C116,
C117, C124, C126, C128, C130, C132-C134, C138, C140,
C142, C144-C148, C160, C161-C163, C164, C168, C169,
C215, C222, C236, C237, C240, C243, C251, C275-C277
100N 50V
X 7R C er amic
66
100N 50V
100N 50V
100N 100V
220N 50V
470N 50V
10U 16V
X 7R C er amic
X 7R C er amic
Monolythic C er amic
X 7R C er amic
X 7R C er amic
Polar E lectr olytic
2
2
5
2
2
10
10U 35V
Polar E lectr olytic
27
10U 35V N P
100U 35V
470U 16V
2200U 35V
Transistors
Polar E lectr olytic
Polar E lectr olytic
Polar E lectr olytic
8
7
1
10
C 253, C 254
C 278, C 279
C 35, C 44, C 59, C 60, C 100
C 184, C 209
C 182, C 208
C 3, C 8, C 10, C 26, C 31, C 36, C 165- C 167, C 212
C34, C64-C66, C112, C113, C115, C125, C127, C129,
C131, C135, C141, C143, C149, C150, C211, C217, C224,
C227, C241, C246, C247, C250, C252, C271, C272
C 54, C 55, C 98, C 99, C 152, C 154, C 156, C 159
C 16, C 25, C 46, C 104, C 105, C 137, C 213
C 270
C 42, C 57, C 58, C 70, C 71, C 118- C 121, C 136
PN P
NPN (Darlington)
N PN ( Power )
N PN
B C 807- 25 SM
MPSA14
T IP31
B C 817- 25
6
2
2
5
Q 2, Q 3, Q 5, Q 7- Q 9
Q4, Q6
Q 10, Q 11
Q 1, Q 12, Q 13, Q 17, Q 18
RED LED
MV50640
1
D1
BYG10G
8
D2, D21-D23, D25-D28
W ith C ambr idge Audio sleeve AP19456/*
Mount on heatsink AP19208/3
Diodes
PY962
PY1191
SMT DIODE
SCHOTTKY RECTIFIER
DIODE 1A
D IO D E
SMT DIODE
D IO D E
D IO D E
6.2V ZENER
Integrated Circuits
IR Receiver
Opto-isolator
Quad NAND CMOS
OPTICAL RECEIVER
HEX Inverter
Dual 4-1 MUX
Dual 4-1 MUX
Quad OR Gates
OPTICAL TRANSMITTER
SPDIF RX IC
SPDIF TXCIC
D SP
+15V REGULATOR
-15V REGULATOR
+5V REGULATOR
+3.3V REGULATOR
Quad Buffer
Quad Buffer
Reset IC
Hex Inverter
PY990
PY990
PY363
PY980
PY979
PY 982
PY986
PY988
PY 985
+1.2V REGULATOR
Flash RO M
OP-AMP single
OP-AMP balanced
OP-AMP dual
REGULATOR
2.8V REGULATOR
-5V REGULATOR
D AC
PY987
PY987
PY 981
SB1H100
1N 4004
BAS16
1N 4001
1N 4148
BZX79-C6V2
4
D3-D6
IR housing (AP17339/3) with LED MV50640
& TSOP1836 IR Receiver
SUB : 1. MBR1100TR = International
rectifier
10 D 7- D 14, D 29, D 30
2
D15, D16
2
D 17, D 18
2
D 19, D 20
1
D24
TSOP1836 IR
1
U1
RECEIVER
OP4N25
1
U2
4011
1
U3
RX179AT
2
U4, U5
74VHC14
2
U6, U15
74VHC153
1
U7
74HCT153
1
U9
74VHC32
1
U8
TX179AT
1
U10
CS8416CZ
1
U11
CS8406CZ
1
U12
AD SP- B F532B ST Z 400
1
U 13
7815
4
U14, U22, U49, U51
7915
2
U16, U24
7805
6
U17, U25, U27, U29, U31, U36
LM1117T_3.3
2
U18, U26
74VHC125
1
U19
74HCT125
1
U20
DS1818
1
U21
74HCU04
1
U23
MAX202CSE
1
U28
LT1963AET
1
U30
AT 49B V 002AN 70T U
1
U 32
OPA842ID
4
U33, U34, U37, U38
OPA1632DGN
2
U35, U39
OPA2134UA
6
U40, U41, U46, U50, U52, U53
LT1761ES5-BYP
2
U42, U44
LT1761ES5-2.8
2
U43, U45
7905
2
U47, U48
AD 1955ARS
2
U 130, U 131
Pr ogr am with Softwar e
Connectors
Phono Socket dual hor izontal
AV 2- 8. 4- 14/E C
1
CN1
or ange inser t, gold plated
Note: resistors, capaciotrs and other'generic' electronic componetents are
not usually stocked by the manufacturer. Please obtain these locally.
36
AP19132/6
Cambridge Audio Azur 840C DAC PCB Assembly BOM
A P P ar t N o
V a lue
D e s c r i pt i o n
F a c t or y P a r t N o
Q ty
9 W ay D T ype PC B Right Angle
Phono Socket single
2x7 W ay V er tical H eader
2MM 3W ST HEADER
2MM 8W ST HEADER
2MM 9W ST HEADER
2,5MM 10W ST HEADER
Phono Socket vertical dual
X L R SK T Male
3.5mm JACK SKT
1
AV - 8. 4- 8E S
B3B-PH-KS
B9B-PH-KS
B9B-PH-KS
B10B-XH-A
3
1
1
1
1
1
AV2-8.4-13EL
5032A
CKX-3.5-12
1
2
1
C o m po n e n t I d e n t
N ot e s
CN2
C N 3- C N 5
CN6
CN7
CN8
CN9
CN10
CN12
C N 13, C N 14
CN100
black inser t, gold plated
white insert (top)/red insert (bottom), gold
plated
latching type
Crystal
CH015M2457600AFHJ00
24.576MHz
Inductor
47uH
Relay
ME2-5S
Fuse
3. 0A
1. 1A
Polyfuse
Polyfuse
W H 60- 300
W H 60- 110
1
X1
3
L 2- L 4
3
RL1-RL3
1
4
F3
F1, F2, F4, F5
Idc min= 150mA
Note: resistors, capaciotrs and other'generic' electronic componetents are
not usually stocked by the manufacturer. Please obtain these locally.
37
L
N
E
10U 5A T68-2A MAINS
L2
PAD EMC M3
P1
1N X1/Y1 C&C
C1
1
J5
SWITCH 2
1N X1/Y1 C&C
C2
SWITCH 1
J4
TO ON/OFF SWITCH
To enhance viewing, please print to A3
IEC PCB MOUNT
Rong Feng
SS-7B-1
CN3
10U 5A T68-2A MAINS
L1
TO TRANSFORMER
BLUE
J1
TO VOLTAGE SELECTOR PCB
J3
TO DAC OCB
ANALOG A +
GND A
ANALOG A ANALOG B +
GND B
ANALOG B DIGITAL +
DIG GND
RELAY 10V
TRANSISTOR COLLECTOR
CN2
10
9
8
7
6
5
4
3
2
1
2,5MM 10W ST HEADER
AP19125/3 Mains PCB Schematic
X2 47N SUPPRESSION
C3
20MM T2AL
FU3
RL2:A
1
RELAY
1
RELAY
2
7
8
4
5
4
5
7
8
RL1:A
2
Cambridge Audio Azur 840C CD Player
RELAY
RELAY
RELAY
RELAY
6
RL2:C
3
RL2:B
3
RL1:B
6
RL1:C
ANALOG A +
GND A
ANALOG A ANALOG B +
GND B
ANALOG B DIGITAL +
DIG GND
2,5MM 8W ST HEADER
FROM TRANSFORMER
8
7
6
5
4
3
2
1
CN1
38
To enhance viewing, please print to A3
AP19125/3 Mains PCB Board Layout (Top Side)
Cambridge Audio Azur 840C CD Player
39
To enhance viewing, please print to A3
AP19125/3 Mains PCB Board Layout (Bottom Side)
Cambridge Audio Azur 840C CD Player
40
AP19128/2
Cambridge Audio Azur 840C CD Player Mains PCB BOM
AP Part No
Value
Description
CAPACITORS
1n X1/Y1
10mm pitch Polyester Capacitor
47N X 2
15mm pitch Polyester C apacitor
CONNECTORS
IEC-SOCKET 3 Way IEC Connector
B10B-XH-A JST 10 Way 2.54mm
B8B-XH-A JST 8 Way 2.54mm
MISCELLANEOUS
Component
Ident
Qty
2
1
1
C1, C2
C3
CN3
CN2
CN1
1
1
Factory Part
No.
15mm Pitch
2336-003910-002
T68-2A 32.5 Turns with UL
Heatsink
AP13570/1
10uH 5A Mains Inductor
2
L1, L2
ME - 11 005
Relay 5V ME - 11
2A slow blow fuse 20mm LBC (low
breaking capacity)
20MM Fuse Holder
Fuse C over
2
RL 1, RL 2
1
FU3
4030-618002-001
3
3
FU3
FU 3
4034-000030-000
4031- 050100- 001
T2AL
Notes
Note: resistors, capacitors and other 'generic' electronic components are
not usually stocked by the manufacturer. Please obtain these locally.
41
Cambridge Audio Azur 840C CD player IC Pin Layout
Details
TA2153FN
Servo PCB (U1)
TC9462FG
Servo PCB (U2)
42
MCU TMP87EP26F-1J15
Servo PCB (U3)
TA2092N
Servo PCB (U6)
7808
Servo PCB (U7)
7805
Servo PCB (U8)
DAC PCB (U17, U25, U27, U29, U31 & U36)
C8050D
Servo PCB (Q7, Q8, Q11 & Q12)
43
9014C
Servo PCB (Q13)
C8550
Servo PCB (Q9 & Q10)
9015C
Servo PCB (Q1)
TSOP1836SS3V
Front Panel PCB (U1)
PIC16F877A-I/P
Front Panel PCB (U2)
DS18030-050
Front Panel PCB (U3)
44
PIC12C508A-I/P
Front Panel PCB (U4)
BA6218
Front Panel PCB (U5)
BC337
Front Panel PCB (Q1, Q2, Q3 & Q4)
TSOP1836
DAC PCB (U1)
OP4N25
DAC PCB (U2)
4011
DAC PCB (U3)
RX179AT
DAC PCB (U4 & U5)
45
74VHC14
DAC PCB (U6 & U15)
74VHC153
DAC PCB (U7)
74HCT153
DAC PCB (U9)
74VHC32
DAC PCB (U8)
TX179AT
DAC PCB (U10)
CS8416CZ
DAC PCB (U11)
46
CS8406CZ
DAC PCB (U12)
ADSP-BF532BSTZ400
DAC PCB (U13)
7815
DAC PCB (U14, U22, U49 & U51)
47
7915
DAC PCB (U16 & U24)
LM1117T_3.3
DAC PCB (U18 & U26)
74VHC125
DAC PCB (U19)
74HCT125
DAC PCB (U20)
DS1818
DAC PCB (U21)
48
74HCU04
DAC PCB (U23)
MAX202CSE
DAC PCB (U28)
LT1963AET
DAC PCB (U30)
AT49BV002AN70TU
DAC PCB (U32)
OPA8421D
DAC PCB (U33, U34, U37 & U38)
49
OPA1632DGN
DAC PCB (U35 & U39)
OPA2134UA
DAC PCB (U40, U41, U46, U50, U52 & U53)
LT1761ES5-BYP
DAC PCB (U42 & U44)
LT1761ES5-2.8
DAC PCB (U43 & U45)
7905
DAC PCB (U47 & U48)
AD1955ARS
DAC PCB (U130 & U131)
BC807-25
DAC PCB (Q2, Q3, Q5, Q7, Q8 & Q9)
50
MPSA14
DAC PCB (Q4 & Q6)
TIP31
DAC PCB (Q10 & Q11)
BC817-25
DAC PCB (Q1, Q12, Q13, Q17 & Q18)
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Circuit Description
To Follow.
52
Cambridge Audio
Gallery Court
Hankey Place
London SE1 4BB
England
AP21487/1
Azur 840C CD Player
Upgrade Software Instructions
www.cambridge-audio.com
Introduction
The following instructions are a step-by-step guide on how to upgrade the DSP (Digital
Signal Processor) chip (Type is Analog Devices ADSP-BF532BSTZ400 and ident on
PCB is U13) and the PIC Microcontroller chip (Type is Microchip PIC16F877A-I/P and
ident on PCB is U2), inside the 840C CD Player.
Equipment Required
1x
1x
1x
840C CD Player with mains lead.
Desktop PC or Laptop with Windows XP Service Pack 2 installed, and with one 9
way D-Type serial communications port free.
9 way female-female D-Type Null Modem Cable. Example cable to use is:
Product Code 976-880 from Farnell (http://uk.farnell.com). Pin layout and
example cable pictures are shown below.
Pin Layout
Example Cable
1x
840C Loader Program installed on PC or
Laptop (840C Loader Program.zip).
53
1x
1x
Latest 840C DSP Software (AP20059X 740C-840C DSP software upload file
VX.X (6.1.ZZ).bin).
Latest 840C PIC Software (AP20058X 840C VX.X.HEX).
Note: All the required software can be found on the Service Extranet. Please
download and save all software onto your PC or Laptop Hard Drive.
Checking Software Version
Before you start, you need to make a note of the current version of software installed in
the 840C. To do this:
1.
Connect the 840C to the mains supply using an IEC power cord, making sure the
voltage selector switch is set to the correct voltage for your local mains supply.
2.
Switch the 840C on using the Power On/Off switch on the rear panel and the
Standby/On button on the front panel.
3.
When the 840C has switched on and is ready to be used (i.e. “No Disc” is
displayed on the front panel LCD), press the “Menu” button on the front panel 4
times until “SOFTWARE VERSION XX / YYY / Z.Z” is displayed on the front
panel LCD. XX is the DSP version number, YYY is the DSP build number and
Z.Z is the PIC version number. Note down the full software version number.
4.
Switch the 840C off using the Power On/Off switch on the rear panel.
Upgrade Instructions – PIC Software
To upgrade the 840C software, please carry out the following:
1.
Install the 840C Loader Program onto your PC or Laptop (by following the on
screen instructions), by unpacking 840C Loader Program.zip and running
setup.exe. Make sure the Loader Program is not running before continuing.
2.
Connect one end of the Null Modem cable to a 9 way D-Type spare socket on
the PC or Laptop.
3.
Connect the other end of the Null Modem cable to the RS232C port on the back
of the 840C.
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4.
Switch the 840C on using the Power On/Off switch on the rear panel, while
pressing and holding the Standby/On button on the front panel. This will then
display “DOWNLOAD!” on the front panel LCD. This means the 840C is ready to
receive new software.
5.
Load the 840C loader software on your PC or Laptop by pressing “Start”,
“Programs”, “840C” then select the “Loader” icon to start up the loader software.
6.
The picture below shows the first screen that appears on your PC screen. Select
the number of the communications (Comm) port that you plugged the Null
Modem into on your PC or Laptop, then press “OK”.
7.
The window that now appears is shown below.
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8.
If the wrong comm port is selected, please close down the software and repeat
the process, from step 6, above.
9.
Select the “Load File” button corresponding to “PIC Software Download.”
10.
This will then bring up a browse menu. Please locate the latest PIC software
(the file extension is .HEX) for the 840C and press “Open.”
11.
The loader window will now display “File Loaded – VX.X,” where X.X is the
version number, as shown below.
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12.
Now press the “Download Code” button corresponding to “PIC Software
Download” to start the process. “Programming PIC Processor…” will now
display on the PC screen and the progress bar will start to move. Also “Loading
PIC…” will be displayed on the 840C front panel LCD.
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13.
When the process is complete, the program will display the following:
Also, the 840C will return to its Standby mode.
14.
If at any time during the process, there is a failure, an error message will be
displayed. If this occurs, please repeat the steps above. If the problem persists,
please seek advice from our servicing department.
15.
Switch the unit off via the On/Off switch on the rear panel.
The PIC has been successfully updated.
Upgrade Instructions – DSP Software
58
1.
Make sure the 840C is switched off.
2.
Repeat steps 1 to 9 for the PIC software above. Note: Please skip step 1 if you
already have the PC/Laptop installer program installed. Also make sure you
press and hold the Standby/On button while switching on the 840C via the
On/Off switch on the rear panel.
3.
Select the “Load File” button corresponding to “DSP Software Download.”
4.
This will then bring up a browse menu. Please locate the latest DSP software
(the file extension is .BIN) for the 840C and press “Open.”
5.
The loader window will now display “File Loaded!” as shown below.
6.
Now press the “Download Code” button corresponding to “DSP Software
Download” to start the process. “Programming DSP…” will now display on the
59
screen and the progress bar will start to move. Also “Loading DSP…” will be
displayed on the 840C front panel LCD.
7.
When the process is complete, the program will display the following:
Also, the 840C will return to its Standby mode.
8.
If at any time during the process, there is a failure, an error message will be
displayed. If this occurs, please repeat the steps above. If the problem persists,
please seek advice from our servicing department.
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Testing
1.
Repeat the procedure “Checking Software Version” above and note the new
software version. This should be the same number as the numbers located on
the file names of the HEX and BIN files. In this example the HEX version is 1.1
(see item 10 PIC picture above) and BIN build version is 065 (see item 4 DSP
picture above).
2.
Switch the unit off via the On/Off switch on the rear panel.
3.
Remove 9 way D-Type Null Modem cable from the 840C.
4.
Switch the unit on and place a CD in the tray.
5.
Close the CD tray and play the CD.
6
Test all front panel buttons and audio outputs. If the unit is functioning correctly,
then the upgrade is complete.
The DSP has been successfully updated.
The process is now complete.
61