Cambridge Audio Azur 840C User manual

Gallery Court Hankey Place London SE1 4BB UK
Tel: [phone] Fax: [phone]
840C
Issue Date: 07th February 2007
SERVICE MANUAL
SPECIFICATIONS:
D/A Converters Dual Analog Devices Total correlated jitter <130pS
AD1955 24 bit DAC’s
Crosstalk @1kHz <-130dB
Digital Filter Analog Devices Black Fin Crosstalk @20kHz <-114dB
ADSP-BF532 32 bit DSP
Performing ATF™ Output impedance <50 ohms
Up sampling to 24 bit 384 kHz
Digital input word
widths supported 16-24 bit
Analog Filter 2 Pole Fully Differential
Linear Phase Bessel Filter Digital output word
widths supported 16, 20, 24 bit
Frequency Response 20Hz – 20kHz (+\-0.1dB) Digital input sampling 32kHz, 44.1kHz,48kHz,88.2kHz
frequencies supported 96kHz, 176.4kHz, 192kHz
THD @ 1 KHz 0dBFs <0.0005% Digital output sampling 32 kHz – 192 kHz pass through
frequencies supported (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 > 120dB
(>24 kHz)
S to N ration, A weighted >113dB
AP21184/1
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.
© 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.
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.
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.
CLASS 1 LASER PRODUCT
NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK OR BASE UNIT
The laser diode in the optical pick-up block may suffer electrostatic breakdown because of the
potential difference generated by the charged electrostatic load, etc. on clothing and the human
body.
During repair, pay attention to electrostatic breakdown and also use the procedure in the printed
matter which is included in the repair parts.
The flexible board is easily damaged and should be handled with care.
NOTES ON LASER DIODE EMISSION CHECK
The laser beam on this model is concerated so as to be focused on the disc reflective surface 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

Cambridge Audio Azur 840C CD Player
Exploded Diagram
To enhance viewing, please print to A3 5

Cambridge Audio Azur 840C CD Player
Exploded Diagram Parts List
noitpircseDec
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er
efeRyrotc
a
F
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r
aP
PA.f
e
Rgn
i
war
D
1 PY1228 7003-008010E006 Screw M3*8 M/C 1/K Torx Recess ZN-PT (Silver) 1 PY1229 7003-008010E001 Screw M3*8 M/C 1/K Torx Recess BLK-PT (Black) 2 PY1218 6574-010003E000-01 Azur 840C Top Panel (Black) 2 PY1219 6574-010003E000-02 Azur 840C Top Panel (Silver) 3 PY1127 6574-150013E000-01 Azur 840A Side Panel, (Black) 3 PY1128 6574-150013E000A01 Azur 840A Side Panel, Silver
4 PY1110 4006-840058E001 840C DAC Module 5 PY1217 3200-080551E000 Transformer AC115/230V T08055A<AP19141/4>Azur-840C
6 PY940 9692-006002-201 Azur V2 CD Mechan assy with Sanyo DA11V Rev A
Not Shown PY941 3009-110000-002 V2 CD Sanyo Laser DA11V
7 PY1220 8584-001010E301 Azur 840C UK/EU Black Front Panel Assy
7 PY1221 8584-001000E301 Azur 840C UK/EU Silver Front Panel Assy
8 PY1222 4006-840001E000 Azur 840C Display Module MBCF00003B00V0 <RCL>
9 PY1223 6574-010002E000-01 Azur 840C Front Panel -B Artwork (Print Cool Grey 7C) Black 9 PY1224 6574-010002E000A01 Azur 840C Front Panel-S Artwork (Print Coll Grey 8C) Silver
10 PY1225 9484-001000E041 Azur-840C Control PCB Assy Rev A
11 PY1226 9484-001000E181 Azur-840C Servo PCBA <T-TYPE> Rev A
12 PY554 6564-010006-000-01 Azur 640C.B CD Door W/Silkscreen PMS Cool Grey 7C
12 PY568 6564-010006-000A01 Azur 640C.S CD Door W/Silkscreen PMS Cool Grey 7C
13 PY1122 6074-150004E000 Azur 840A Plastic Foot (Black) AP16837* 13 PY1124 6074-150004E000A01 Azur 840A Plastic Foot (Silver) AP16837*
14 PY1165 9805-084000E001 Azur 840A/C Remote Control Assy Rev A
Not Shown PY1227 5100-840100E100 Azur 840C Multilingual User Manual (AP18655*)
Exploded Drawing Parts List
6

Cambridge Audio Azur 840C CD Player
Functional Block Diagram
DSP
DC SERVO CIRCUITCURRENT SOURCE
CIRCUIT
ITOV
ITOV DIFFERENTIAL FILTER/AMP
DIFFERENTIAL TO SINGLE ENDED
UNBALANCED O/P BALANCED O/P
DAC
WDCLK
BITCLK
SDATA L
RESET
MUTE
DAC CONTROL I/F
DAC1 MCLK
24.576 MHz
CLOCK + BUFFER
SPDIF TX CLK
SPDIF RX MCLK DAC2 MCLK DAC1 MCLK
DSP CLK
WDCLK BITCLK
SDATA L
SPDIF RX SET UP I/F
WDCLK
BITCLK
SDATA L
(SPDIF SUBCODE DATA)
SPDIF TX SET UP I/F
AUDIO DATA LEFT
FLASH MEMORY
SPDIF RECEIVER
TRANSMITTER
AUDIO DATA L&R
SPDIF
FLASH ADDRESS & DATA
SPDIF TO LOGIC
LEVEL
SPDIF TO LOGIC
LEVEL
SPDIF I/P 1 SPDIF I/P 2
SPDIF I/P SWITCHING
OPTICAL
COAX
COAX
OPTICAL
LOGIC TO SPDIF LEVEL
SPDIF O/P
COAX
OPTICAL
44.1 kHz PASS THRO' SETTING
44.1/48/96/192 kHz
44.1 kHz FROM CD SERVO PASS THRO' SETTING
48/96/192 kHz UP/DOWN SAMPLED
CD SERVO TO MECH CONNECTIONS
DC SERVO CIRCUIT
CURRENT SOURCE
CIRCUIT
ITOV
ITOV DIFFERENTIAL FILTER/AMP
DIFFERENTIAL TO SINGLE ENDED
UNBALANCED O/P
BALANCED O/P
DAC
WDCLK
BITCLK
SDATA L
RESET
MUTE
DAC SET UP I/F
DAC2 MCLK
DAC PCB MECH AND SERVO PCB
BC
P
O
VRES
HC
EM
SPDIF I/P SWITCHING
CD SERVO TO LCD CONNECTIONS
PSU
MICROCONTROLLER/DSP INTERFACE
MICRO TO LCD
(DOT MATRIX) MICROCONTROLER (PIC)
RS232
IR UNMOD
I/P
O/P
I/P IR MOD
DRAWER OPEN CLOSE CONNECTIONS
DRAWER OPEN CLOSE CONNECTIONS
LCD
DRAWER SPEED
CONTROL
KEY COMMANDS TO SERVO (DIGITAL POT FOR RE S LADDER I/P)
DIGITAL POT
K1 K2 I/P
FRONT PANNEL BUTTONS
MICRO TO LCD
(DOT MATRIX)
FRONT PANEL IR MOD I/P IR MOD FROM REMOTE
SPDIF I/P SWITCHING CONTROL
DSP CLK
AUDIO DATA L&R
SPDIF TX CLK
SPDIF RX MCLK
RS232 (LOGIC LEVELS)
MODULATED IR
LEFT CH
RIGHT CH
RESET
UBIT
RESET
(SPDIF SUBCODE DATA)
CBIT
(SPDIF SUBCODE DATA)
UBIT
X1 U15
U4
CN3 U5
CN4
U10 CN5
U23
U23
U6
U7 U9
44.1 kHz FROM CD SERVO
44.1 kHz FROM CD SERVO
U8
FRONT PANEL PCB
U11 U12
U13
U19 U20
U32
U130
U131
U33
U34
U38
U37
U39
U40
U41
U52Q7Q9
CN12
CN13
CN14
U35
U50
U46U53 Q3 Q5
U1
RELAY
MUTE CIRCUIT
AUDIO O/P
RL1 RL2 RL3 Q2 Q4 Q8
OEI (PIC MUTE)
U3
2
U
5U4U
U28
U1 U2 U3 Q1
AUDIO DATA LEFT
To enhance viewing, please print to A3 7

Cambridge Audio Azur 840C 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
Vo
RS
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
3
L0
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
4
GP4
3
CLKIN
2
Vss
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
R METAL 1/4W
220R
1/4W Metal Film
R37
R METAL 1/4W
220R
1/4W Metal Film
D6
1N4004
D7 1N4004
To enhance viewing, please print to A3 8

Cambridge Audio Azur 840C CD Player
AP19135/3 Front Panel Board Layout (Top Side)
To enhance viewing, please print to A3 9

Cambridge Audio Azur 840C CD Player
AP19135/3 Front Panel Board Layout (Bottom Side)
To enhance viewing, please print to A3 10

AP19138/5
AP Part
No. Value Description Factory Part No Qty Component Ident Notes
47R 0.25 W 1% Metal Fil
m
1R1
56R 0.25 W 1% Metal Fil
m
2 R3, R4
100R 0.25 W 1% Metal Fil
m
16 R5, R7, R8, R20-R3
2
220R 0.25 W 1% Metal Fil
m
1012-201014E00
0
4 R2, R9, R36, R3
7
300R 0.25 W 1% Metal Fil
m
1 R10
680R 0.125 W 1% Metal Fil
m
1016-801016E02
0
2 R33, R34
1K2 0.25 W 1% Metal Fil
m
1 R14
4K7 0.25 W 1% Metal Fil
m
2 R16, R17
10k 0.25 W 1% Metal Fil
m
6 R6, R12, R13, R15,R18, R1
9
100K 0.25 W 1% Metal Fil
m
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
22p 6C,5C2mm0.5=hctiP,OPNcimareCF
12C,02C,71C-51C,2C,1C7mm0.5=hctiPV05cimareCFn1
9mm0.5=hctiPV05
cimareCFn001 C3, C4, C8-C10, C12, C14,
C19, C22
10uF Miniature 16V Pitch 2.5mm
Height 5.2mm 4 C7, C11, C13, C18
1U1REVIECERRIPOSTV3SS6381POST Mount 13.5mm height from PCB, Please
support usingfoam pad spacer
2U1CIPP/I-A778F61CIP Programme with AP20058/2, Please add
version label - See AP Service Dept.
PY983 DS18030-05
0
DIGITAL PO T 4118-030051E20
0
1U3
4U1CIPP/I-A805C21CIP Programme with AP20231/1, Please add
version label - See AP Service Dep
t
PY260 BA621
8
5U1CIREVIRDDC
PY214 BC33 7 NPN SMALL SIGNA L 4 Q1-Q4
1D1EULBDEL
5V1 ZENE R BZX79C5V1 1402-511201E20
0
2 D2, D3
7D,6D,5D,4D4REIFITCERESOPRUPLARENEG4004N1
PY043 TACT SWITCH TACT SW 2P2T KPT-1105A
(5MM) 8 SW1-SW8
MPP03-+1X1SU94-CHFP02LCMM5.3TUOBATHGIEH,zHM02LATSYRCzHM
02
MISCELLANEOUS
Cambridge Audio Azur 840C Front Panel PCB BOM
RESISTORS
CAPACITORS
SEMICONDUCTORS
TRANSISTORS
DIODES
Note: resistors, capacitors and other 'generic' electronic components are
not usually stocked by the manufacturer. Please obtain these locally.
11

Cambridge Audio Azur 840C CD Player
AP18432/3 CD Servo PCB Schematic (DAC)
SDATA
1
DEM/SCL
2
LRCK
3
MCLK
4
AOUTL
8
VA+
7
AGND
6
AOUTR
5
U5
CS4333/38
C41 0.1uF
C40
10uF 25V
C39
10uF 25V
C32
10uF 25V
R75 15K
R82 15K R80 12K
R74 12K
C42
390pF
C38 390pF
3 2
1
84
U4:A
NJM2100
5
6
7
U4:B
NJM2100
R73 47K
C33
10pF
C34
10uF 25V
1
2 3
CN9
GND
R71
56K
C43
10uF 25V
R70
56K
C35
0.1uF
+5V
L.CH
R.CH
+8V
R81 47K
C36
10pF
R79 20K
R72 20K
C37 220uF 16V 1
2
3
CN10
GND
L.CH
R.CH
GND
1
2
3 4
5
CN13
DIG DATA
1
2
CN14 MCLK
R68
100R
R69 100R
3
4
5
RL1:B
1
2
RL1:A
6
7 8RL1:C
R83
120R 0.5W
R88
1K
14.5V
Q3
8050
Q4
8050
C55
47uF 16V
R89
330k
D1
IN4148
R90
390R
D7
IN4004
R87
100R
Q6
9012
R85
560R
R86 3K9
C63
4.7uF 16V
D6
IN4004
1
2
3
4
5
CN11
GND ROUT
LOUT MUTE1
MUTE
AC
R84
4K7
Q5
9012
C88
1nF
D12 1N4001
To enhance viewing, please print to A3 12

Cambridge Audio Azur 840C CD Player
AP18432/3 CD Servo PCB Schematic (Servo)
SEG14
77
SEG15
76
SEG16
75
SEG17
74
SEG18
73
NC
72
NC
71
NC
70
NC
69
NC
68
NC
67
NC
66
NC
65
NC
64
NC
63
NC
62
NC
61
NC
60
NC
59
NC
58
NC
57
NC
56
NC
55
NC
54
NC
53
FL/TL
52
VDD
51
SEG13
78
SEG12
79
SEG11
80
SEG10
81
SEG9
82
SEG8
83
SEG7
84
SEG6
85
SEG5
86
SEG4
87
SEG3
88
SEG2
89
SEG1
90
SEG0
91
COM3
92
COM2
93
COM1
94
COM0
95
VLC
96
NC
97
NC
98
NC
99
VDD
100
VSS
50
(BOOT)
49
VAREF
48
AD K1
47
AD K2
46
AD K3
45
PWR DET
44
NC
43
NC
42
OLT
41
CLT
40
SLT
39
D-OPEN
38
D-CLOSE
37
BUS3
36
BUS2
35
BUS1
34
BUS0
33
BUCK
32
CEE
31
VSSS
1
XOUT
2
XIN
3
RESET
4
NC
5
NC
6
TEST
7
NC
8
REMOTE
9
MUTE
10
NC
11
NC
12
NC
13
SCK2
14
(SI2)
15
(SO2)
16
(WAIT)
17
NC
18
NC
19
NC
20
NC
21
NC
22
NC
23
NC
24
NC
25
NC
26
NC
27
NC
28
CORW
29
RES
30
U3 TOSHCDMCU
1
2
3 4
5
6 7
CN6 LCD
1
2 3 4 5 6 7
8
CN5
LCD
1 2 3 4 5 6
7
8
CN4 LCD
R22
NC
R21
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
1
HSO
2
UHSO
3
EMPH
4
LRCK
5
VSS1
6
BCK
7
AOUT
8
DOUT
9
MBOV
10
IPF
11
SBOK
12
CLCK
13
VDD1
14
VSS2
15
DATA
16
SFSY
17
SBSY
18
SPCK
18
SPDA
20
COFS
21
MONIT
22
VDD2
23
TESIO0
24
P2VREF
25
HSSW
26
ZDET
27
PDO
28
TMAXS
29
TMAX
30
U2
TC9462F
VCC
1
RFGC
2
GMAD
3
FNI
4
FPI
5
TNI
7
MDI
8
LDO
9
SEL
10
TEB
11
2VRO
12
TEN
13
TEO
14
SBAD
15
FEO
16
FEN
17
SEB
18
VRO
19
RFRP
20
BTC
21
RFCT
22
PKC
23
RFRPIN
24
RFGO
25
GVSW
26
AGCIN
27
RFO
28
GND
29
RFN2
30
TPI
6
U1
TA2153FN
PW GND
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
PW GND
12
PW GND
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
PW GND
24
U6
TA2092N
R15 10K
R39 10K
R14 10K
R13 10K
R12 10K
+5V
R11 10K
R6
220K
R7 68K
R5 15K
R9 47K
C8
0.015uF
C76
47pF
C74 47uF 16V
R8 10K
C75 0.01uF
C6 0.0027uF
1
2
3
CN1
DIGITAL OUT
+5V
R10 47R
C11
0.047uF
C10 47uF 16V
C9 47uF 16V
1
2 3
4
5
6
7
8 9
10
11
12 13
14
15
16
CN16
MECH
1
2
3
4 5
6
CN15
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
R38
R37
R40 10R 1/4W
NC NC NC NC NC
R36
R35
X1
CRYSTAL
16.9344MHz
C17 15pF C16 15pF
C15
0.047uF
NC
C19 0.047uF
C18 47uF 16V
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
R43
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
C78
47uF 16V
C70
47uF 16V
NC
D8 1N4148
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
C13 0.047uF
C12 1uF 16V
C29 47uF 16V
R16
10K
1 2
3
4 5
CN8
DRAW DRIVE
R31
10K
R30
10K
+5V
Q12
8050
Q7
8050
Q9 8550
Q10
8550
R33
470R
R34 470R
R67 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
1
2
3
4 5
CN2
DATA OUT
EMPH
BCK
PCMD
LRCK
GND
1 2
CN17 XTALI
OSC GND
SET LCD CONTRAST
+5V
RESET
BOOT
GND
WAIT
SCK2
SI2
SO2
REMOTE +5V
GND K1
K2
C21
0.0047uF
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
FU1
T2AL
VI
1
VO
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
1
VO
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
To enhance viewing, please print to A3 13

Cambridge Audio Azur 840C CD Player
AP12927/8 CDServo Board Layout (Top Side)
To enhance viewing, please print to A3 14

Cambridge Audio Azur 840C CD Player
AP12927/8 CDServo Board Layout (Bottom Side)
To enhance viewing, please print to A3 15

AP19969/3
AP Part
No Value Description Qty Component Ident Factory Part no Notes
000-410000-110104R1rotsiseRmliFlateMW52.0R01
15R 0.125 W Metal Film Resistor 1 R62
knilesU.YLNOC048roF76R1knilmm41knil
000-810007-4101,01
R1rotsiseRmliFlateMW521.0R74
100R 0.125 W Metal Film Resistor 1 wirelink ( J1 ) 1011-001016-000
wirelink is positioned
between C68 and L2. This
must be 100R resistor
000-810102-21014R1rotsiseRmliFlateMW521.0R022
000-610107-410143,33R2rot
siseRmliFlateMW521.0R074
1K 0.125 W Metal Film Resistor 5 R3, 20, 25, 60 1011-002018-000
000-610202-210166,1R2rotsiseRmliFlateMW521.02K2
3K3 0.125 W Metal Film Resistor 7 R19, 41, 42, 44, 45, 46, 47 1013-302018-000
000-610207-410167,23R2rotsis
eRmliFlateMW521.07K4
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
000-810305-1101,5R1rotsiseRmliFlateMW521.0K51
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
000-810308-6101,7R2rotsiseRmliF
lateMW521.0K86
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
15pF Ceramic COG 50V 5mm Pitch 2 C16, 17 1100-150043-000
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
000-340201-001178C1hctiPmm5V05cimareCFn1
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 20
C2, 4, 44, 45, 48, 49, 51, 52, 53,
54, 57, 58, 59, 61, 62, 64, 67, 71,
79, 86
1106-104044-000
220nF Ceramic 50V 5mm Pitch 2 C3, 72 1100-224044-000
000-360272-10116C1hctiPmm5ralyM7n
2
000-260274-101112C1hctiPmm5ralyM7n4
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 Amplier 1 U1 4121-530103-000
PY475 TC9462FG TOSHIBA Digital Servo-chip
Processor ABIHSOTPFQSNIP001000-321026-49142U1
Cambridge Audio Azur 840C Servo PCB Assembly BOM
RESISTORS
CAPACITORS
SEMICONDUCTORS
Note: resistors, capacitors and other 'generic' electronic components are
not usually stocked by the manufacturer. Please obtain these locally.
16

AP19969/3
AP Part
No Value Description Qty Component Ident Factory Part no Notes
Cambridge Audio Azur 840C Servo PCB Assembly BOM
PY565 TOSHCDMCU MCU TMP87EP26F-1J15 SOP
TOSHIBA 000-301062-78143U1
000-350029-02146U1CIrevirdrewoPABIHSOTN2902AT374YP t heatsink to top of driver
IC
006-203080-87147U1rotalugeRV
8+022-OT8087613YP mount on heatsing using
heatsink comound only
007-433050-87148U1rotalugeRV5+022-OT5087530DP
PY014 C8050D NPN Transistor TO92 4 Q7, 8, 11, 12 1300-805000-100
PY558 9014C NPN Transistor 1 Q13 1300-901400-100
001-000558-103101,9Q2rotsisnarTPNP05
58C955YP
001-005109-10311Q1rotsisnarTPNPC5109065YP
1N4148 Signal Diode 3 D9, 10, 11 1401-141480-000
1N4004 Rectier Diode 4 D2, 3, 4, 5 1401-140040-000 stand up o PCB by 7.5mm
000-343961-00611X1hctiPmm5niP2zHM4439.61720YP
099-282737-00612X1hctiPmm5niP2zHM8273.7165YP
100-000200-00321271NC2TSJhctiPmm2yaW2
100-000300-0032,1NC1TSJhct
iPmm2yaW3
000-000500-0032,8,2NC2TSJhctiPmm2yaW5
000-000600-003251NC1TSJhctiPmm2yaW6
000-000700-00327,6NC2TSJhctiPmm2yaW7
000-000800-00325,4,3NC3TSJhctiPmm2yaW8
300-001200-003291NC1TSJhctiPmm5.2yaW2
000-109610-103261NC1hctiPmm0.1CFFyaW61
100-001050-13041UF1redloHesuFtnuoMBCPmm02
T2AL 2A delay 20mm Fuse 250V LBC
(low breaking capacity) 100-200816-03041UF1
10uH Inductor 8mm Pitch 1 L2
001-00307
4-40511L1hctiPmm8rotcudnIHu74
001-003101-40515,4,3L3hctiPmm8rotcudnIHu001
CRYSTALS
CONNECTORS
MISCELLANEOUS
Note: resistors, capacitors and other 'generic' electronic components are
not usually stocked by the manufacturer. Please obtain these locally.
17

Cambridge Audio Azur 840C CD Player
AP17977/2 Voltage Select Switch PCB Schematic
J2
FROM J4 (Common)
SW1
VOLTSELECT RF1002B 115/230V Marking
J1
BROWN (230V)
J3
BLACK (115V)
To enhance viewing, please print to A3 18

Cambridge Audio Azur 840C CD Player
AP17977/2 Voltage Select Switch Board Layout (Top Side)
To enhance viewing, please print to A3 19

Cambridge Audio Azur 840C CD Player
AP17977/2 Voltage Select Switch Board Layout (Bottom Side)
To enhance viewing, please print to A3 20