Cambridge Audio 840-C Service manual
840C
Issue Date: 07thFebruary 2007
SERVICE MANUAL
SPECIFICATIONS:
D/A Converters Dual Analog Devices Total correlated jitter <130pS
Digital Filter Analog Devices Black Fin Crosstalk @20kHz <-114dB
Analog Filter 2 Pole Fully Differential
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%
THD @ 1Khz -10dBFs <0.0004%
THD @ 20 KHz 0dBFs <0.0007%
(4.5 x 16.9 x 14.7”)
IMD (19/20 kHz) 0dBFs <0.0002%
Linearity @ -90dBFs +/- 0.5dB
Stopband Rejection > 120dB
(>24 kHz)
AD1955 24 bit DAC’s
Crosstalk @1kHz <-130dB
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
Linear Phase Bessel Filter Digital output word
widths supported 16, 20, 24 bit
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
Audio output up sampling Fixed 24 bit, 384kHz
Dimensions (H x W x D) 115 x 430 x 360 mm
Weight 8.5kg (18.7lbs)
S to N ration, A weighted >113dB
Gallery Court Hankey Place London SE1 4BB UK
Tel: +44 (0)20 7940 2200 Fax: +44 (0)20 7940 2233
AP21184/1
1
840C SERVICE MANUAL
TABLE OF CONTENTS
Safety Precautions & Important Notes 3
Laser Safety Precautions
Exploded Diagram
Exploded Diagram Parts List
Functional Block Diagram
Front Panel Circuit Diagram
Front Panel PCB Layout (Top Side)
Front Panel PCB Layout (Bottom Side)
Front Panel PCB BOM
Servo Circuit Diagram (DAC)
Servo Circuit Diagram (Servo)
Servo PCB Layout (Top Side)
Servo PCB Layout (Bottom Side)
Servo PCB BOM
Voltage Select Switch Circuit Diagram
Voltage Select Switch PCB Layout (Top Side)
Voltage Select Switch PCB Layout (Bottom Side)
Voltage Select Switch PCB BOM
4
5
6
7
8
9
10
11
12
13
14
15
16-17
18
19
20
21
DAC DSP Circuit Diagram (Abus)
DAC Test Signals (Main Signal Paths General)
DAC DSP Circuit Diagram (DSP)
DAC Test Signals (Main Signal Paths General)
DAC DSP Circuit Diagram (Filters)
DAC Test Signals (Main Signal Paths Left Channel)
DAC Test Signals (Main Signal Paths Right Channel)
DAC DSP Circuit Diagram (Supply)
DAC DSP Circuit Diagram (Flash)
DAC DSP Board Layout (Top Side)
DAC DSP Board Layout (Bottom Side)
DAC DSP PCB BOM
Mains PCB Circuit Diagram
Mains PCB Board Layout (Top Side)
Mains PCB Board Layout (Bottom Side)
Mains PCB BOM
IC Pin Layout Details
22
23
24
25
26
27-28
29-30
31
32
33
34
35-37
38
39
40
41
42-50
Circuit Description
Software Instructions
51
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
Cambridge Audio Azur 840C CD Player
Exploded Diagram
To enhance viewing, please print to A3 5
6
noitpircseDec
Azur V2 CD Mechan assy with Sanyo DA11V Rev A
Exploded Drawing Parts List
n
er
Cambridge Audio Azur 840C CD Player
efeRyrotc
a
F
t
r
aP
PA.f
e
Rgn
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
i
war
D
4 PY1110 4006-840058E001 840C DAC Module
6 PY940 9692-006002-201
5 PY1217 3200-080551E000 Transformer AC115/230V T08055A<AP19141/4>Azur-840C
V2 CD Sanyo Laser DA11V
8 PY1222 4006-840001E000 Azur 840C Display Module MBCF00003B00V0 <RCL>
7 PY1221 8584-001000E301 Azur 840C UK/EU Silver Front Panel Assy
7 PY1220 8584-001010E301 Azur 840C UK/EU Black Front Panel Assy
Not Shown PY941 3009-110000-002
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
Exploded Diagram Parts List
12 PY554 6564-010006-000-01 Azur 640C.B CD Door W/Silkscreen PMS Cool Grey 7C
11 PY1226 9484-001000E181 Azur-840C Servo PCBA <T-TYPE> Rev A
13 PY1122 6074-150004E000 Azur 840A Plastic Foot (Black) AP16837*
12 PY568 6564-010006-000A01 Azur 640C.S CD Door W/Silkscreen PMS Cool Grey 7C
14 PY1165 9805-084000E001 Azur 840A/C Remote Control Assy Rev A
13 PY1124 6074-150004E000A01 Azur 840A Plastic Foot (Silver) AP16837*
Not Shown PY1227 5100-840100E100 Azur 840C Multilingual User Manual (AP18655*)
RS232
IR UNMOD
I/P IR MOD
O/P
CN14
CN13
BALANCED O/P
UNBALANCED O/P
UNBALANCED O/P
CN12
BALANCED O/P
I/P
FRONT PANEL PCB
U40
U50
U28
DIFFERENTIAL TOSINGLE ENDED
U39
LEFT CH
DC SERVOCIRCUITCURRENTSOURCE
U41
U38
CIRCUIT
U52Q7Q9
DIFFERENTIAL FILTER/AMP
U37
ITOV
ITOV
DIFFERENTIAL TOSINGLE ENDED
U35
RIGHT CH
DC SERVOCIRCUIT
U46U53Q 3Q5
U33
ITOV
CURRENTSOURCE
CIRCUIT
DAC
U130
DAC1MCLK
DACCONTROL I/F
FLASHMEMORY
FLASHADDRESS & DATA
U32
U13
DSPCLK
Cambridge Audio Azur 840C CD Player
SPDIFRX MC LK
DAC2MCLK
DAC1MCLK
DSPCLK
SPDIFTX C LK
24.576MHz
CLOCK +BUFFER
X1 U15
MUTE
RESET
SPDIFRX SETUP I/F
U11
BITCLK
SDATAL
AUDIO DATALEFT
SPDIF RECEIVER
SPDIFRX MC LK
SPDIF I/P SWITCHING
WDCLK
RESET
U131
DAC2MCLK
DACSET UP I /F
DSP
RESET
SPDIFTX SE T UP I/F
WDCLK
BITCLK
SDATAL
UBIT
CBIT
(SPDIFSUBCODE DATA)
(SPDIFSUBCODE DATA)
AUDIO DATAL&R
SPDIF
TRANSMITTER
U12
SPDIFTX C LK
44.1/48/96/192kHz
44.1kHz FROM CD SERVO
PASSTHRO' SETTING
44.1 kHz
SPDIF I/P SWITCHING
U7
U9
DAC
U34
MUTE
DIFFERENTIAL FILTER/AMP
ITOV
RESET
48/96/192kHz UP/DOWN SAMPLED
U1 U2U3 Q1
FRONT PANEL IR MOD I/P IR MOD FROM REMOTE
U1
FRONTP ANNELBUTTONS
RS232 (LOGICLEVELS)
RL1 RL2RL3 Q 2 Q4 Q8
AUDIO O/P
MUTE CIRCUIT
RELAY
BITCLK
WDCLK
SDATAL
OEI (PIC MUTE)
U19 U20
MODULATED IR
(DOTMATRIX)
MICROTO LCD
MICROCONTROLER (PIC)
AUDIO DATALEFT
MICROCONTROLLER/DSPINTERFACE
BITCLK
WDCLK
SDATAL
(SPDIFSUBCODE DATA)
UBIT
SPDIFI/P SWITCHING CONTROL
AUDIO DATAL&R
U8
44.1kHz FROM CD SERVO
44.1kHz FROM CD SERVO
PASSTHRO' SETTING
DIGITAL POT
U3
BC
P
O
VRES
(DOTMATRIX)
MICROTO LCD
LCD
KEYCOMMANDS TO SERVO (DIGIT AL POT FOR RES LADDER I/P)
CDSERVO TO LCDCONNECTIONS
K1 K2I/P
DRAWER OPENCLOSE CONNECTIONS
CDSERVO TO MECH CONNECTIONS
DRAWER SPEED
2
U
5U4U
Functional Block Diagram
CONTROL
DRAWER OPENCLOSE CONNECTIONS
DAC PCB
PSU
LOGIC TO SPDIF
LEVEL
SPDIF TOLOGIC
U23
OPTICAL
COAX
CN3
U4
SPDIF I/P 1
LEVEL
SPDIF TOLOGIC
U23
OPTICAL
COAX
U5
CN4
SPDIF I/P 2
LEVEL
U6
OPTICAL
COAX
U10
CN5
SPDIF O/P
HC
EM
MECH AND SERVO PCB
To enhance viewing, please print to A3 7
+5V
GND
OPT
U1
CN7
SW2
Menu
SW1
Standby
D1
LED3MM BLUE
220R
R2
+5V
R9
220R
BC337
Q2
R13
10K
LED
Stop
SW4
SW3
SW8
SW6
Open/Close
Select
ForwardSkip
SW7
SW5
Play/Pause
BackSkip
36
38
37
40
39
RB5
RB4
RB2
RB6/PGC
RB7/PGD
RB3/PGM
MCLR/VPP1RA0/AN0
RA2/AN2
RA1/AN1
RA3/AN3/VREF5RA4/T0CKI
U2
4
3
2
+5V
6
R6
10K
INT
CLK
SDTX
CS
SDRX
100nF
C9
+5V
10K
R19
R18
10K
LED
35
34
RB1
RB0/INT
RE0/RD/AN5
RA5/AN4/SS
7
8
IR OUT
IRIN
SERIALTX
SERIALRX
SERVORESET
OE1#
MUTE
RESET
33
32
26
31
27
24
25
29
23
VSS
VDD
RC5/SDO
RD7/PSP730RD6/PSP6
RD5/PSP528RD4/PSP4
RC7/RX/DT
RC6/TX/CK
RC4/SDI/SDA
OSC1/CLKIN13OSC2/CLKOUT
RC1/T1OSI/CCP216RC2/CCP1
RE1/WR/AN6
VDD11VSS
RC3/SCK/SCL
RCO/T1OSO/T1CKI
RE2/CS/AN7
9
12
14
19
10
15
18
17
E
RS
SCL
D4
U9_S01
OSC1
U7_S02
OSC2
U7_SO1
100R
R32
RESET
SERVORESET
TO DAC BOARD CN9 (RS232/MUTE/SPDIF CNTRL)
D6D7SDA
22
21
RD3/PSP3
RD2/PSP2
RD1/PSP1
RD0/PSP0
PIC16F874A
20
D5
JST2MM S8B -PH-KS
7
3
456
1
2
8
SO2_U7
SO1_U9
MUTE
SERIALRX
SO1_U7
SERIALTX
OE1
CONTROLB US
100R
100R
100R
100R
100R
R31
100R
10K
R12
R26
R29
R28
R30
R27
Q1
BC337
RMETAL 1/4W
220R
R37
1/4WMetal Film
RMETAL 1/4W
R36
220R
1/4WMetal Film
TSOP18IR RECEIVER
3
2
1
C11
10U16V
C3
100n
R1
47R
+5V
RESET
+5V
10U16V
C13
100nF
C14
100R
100R
R25
R24
SPIDATA RX
SPIINT
SPIDATA TX
SPICS
SPICLK
9
CN6
FIN
GND12RIN
VCC
OUT1
GND2
OUT27COM
U5
1
BA6218
3
5
6
8
9
100R
100R
100R
100R
R21
R22
R20
R23
LED
2345678
1
JST2MM S9B-PH-KS
+5V
TO DAC BOARD CN8 (SPI)
Cambridge Audio Azur 840C CD Player
+8V
8
5
7
Vss
GP16GP2
+5V_SERVO
GP0
Vdd
MCLR4GP43CLKIN
PIC12C508
U4
1
2
D7
1N4004
1N4004
D6
680R
680R
R33
R34
123
4
5
CN9
DATA
MGND
C22
100nF
BZX79C5V1500MW
D3
BZX79C5V1500MW
D2
+8V
1N4004
C19
100nF
D4
10U16V
D5
1N4004
C18
MGND
2
1
CN8
MGND
345
DATA
COM2
COM1
COM3
COM4
LCD Connector 1
123
7
8
456
CN2
CONN-H8
LCD Connector 2
CN10
BRIGHT
ON/OFF
C8
100nF
100R
R5
C7
10U16V
100nF
C4
D4D5
D0D1
D2D3
VssVdd
R/W
Vo
1
5
6
234
CN5
4a
6a
5a
1a2a3a
E
RS
LCD
SEG10
SEG8
SEG67SEG5
SEG1
SEG9
SEG7
SEG45SEG34SEG2
SEG0
2
1
1
CN3
CONN-H8
SEG11
9
8
3
6
11
10
2
3
678
4
5
CN4
D6D7
7
7a
SEG12
13
12
1
+5V
LEDK
8
8a
LEDA
SEG13
15
14
234
X1
CRYSTAL
22pF
C5
C10
100nF
CONN-8HEADDUAL BOT
SEG1516SEG14
SEG1617SEG1718SEG1819COM120COM221COM322COM423NC
COM1
6
7
5
CONN-H7
FREQ=20MHz
22pF
C6
BC337
Q3
+5V
LCD740C
24
COM3
COM4
COM2
R8
R11
13
R14
1K2
+5V_SERVO
ON/OFF
13
14A16
H0
H11W1
U3
3
4
+5V_SERVO
1n50V X7R
C1
1234567
CN1
10OR
K1
K2
+5V
GND
REMOTE
IROUT
BRIGHT
R35
100K
10K
R15
56R
R3
Q4
BC337
56R
R4
2
PREMULTI 500R
R10
300R
RMETAL 1/8W
R17
4k7
1/8WMetal Film
RMETAL 1/8W
4k7
1/8WMetal Film
R16
5
9
7W012
10
L0
A0
A2
SCL
SDA
L1
GND
VCC
DS1803
8
16
C12
100nF
C2
1n50V X7R
100R
R7
CONN-H7
RESET
POWERDETECT
P5
SERVORESET
1
1
1
P2
PADEMC M3
P3
PADEMC M3
P4
PADEMC M3
C21
1nF
1nF
C20
C17
1nF
C16
1nF
C15
1nF
1
1
P1
PADEMC M3
PADEMC M3
AP19135/4 Front Panel Circuit Diagram
FROMSERVO BOARD DRAWER OPEN/CLOSE (SPI)
TOMECH DRAWER OPEN/CLOSE (SPI)
From Servo Board (LCD)
To Servo Board
To enhance viewing, please print to A3 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
m
m
m
2
m
0
7
m
m
0
m
m
m
9
m
0
0
t
8
0
Cambridge Audio Azur 840C Front Panel PCB BOM
AP Part
No.
RESISTORS
47R 0.25 W 1% Metal Fil
56R 0.25 W 1% Metal Fil
100R 0.25 W 1% Metal Fil
220R 0.25 W 1% Metal Fil
300R 0.25 W 1% Metal Fil
680R 0.125 W 1% Metal Fil
1K2 0.25 W 1% Metal Fil
4K7 0.25 W 1% Metal Fil
10k 0.25 W 1% Metal Fil
100K 0.25 W 1% Metal Fil
PRE MULTI 500R
CAPACITORS
22
10uF
SEMICONDUCTORS
PY983 DS18030-05
PY260 BA621
Value Description Factory Part No Qty Component Ident Notes
Side adjust Footprint 9.5 x 4.5
mm
p 6C,5C2mm0.5=hctiP,OPNcimareCF
cimareCFn001
Miniature 16V Pitch 2.5mm
Height 5.2mm
DIGITAL PO T 4118-030051E20
1012-201014E00
1016-801016E02
VR B500 OHM +10% WI
3296NOXOX-XA1013
1R1
2 R3, R4
16 R5, R7, R8, R20-R3
4 R2, R9, R36, R3
1 R10
2 R33, R34
1 R14
2 R16, R17
6 R6, R12, R13, R15,R18, R1
1 R35
1 R11
C3, C4, C8-C10, C12, C14,
9mm0.5=hctiPV05
C19, C22
4 C7, C11, C13, C18
1U1REVIECERRIPOSTV3SS6381POST
2U1CIPP/I-A778F61CIP
1U3
4U1CIPP/I-A805C21CIP
5U1CIREVIRDDC
AP19138/5
Mount on bottom side of PCB with
screw adjust facing upwards
12C,02C,71C-51C,2C,1C7mm0.5=hctiPV05cimareCFn1
Mount 13.5mm height from PCB, Please
su
pport using foam pad spacer
Programme with AP20058/2, Please add
version label - See AP Service Dept.
Programme with AP20231/1, Please add
version label - See AP Service Dep
TRANSISTORS
PY214 BC33 7 NPN SMALL SIGNA L 4 Q1-Q4
DIODES
1D1EULBDEL
5V1 ZENE R BZX79C5V1 1402-511201E20
MISCELLANEOUS
PY043 TACT SWITCH
02
TACT SW 2P2T KPT-1105A
(5MM)
2 D2, D3
8 SW1-SW8
7D,6D,5D,4D4REIFITCERESOPRUPLARENEG4004N1
MPP03-+1X1SU94-CHFP02LCMM5.3TUOBATHGIEH,zHM02LATSYRCzHM
Note: resistors, capacitors and other 'generic' electronic components are
not usually stocked by the manufacturer. Please obtain these locally.
11
RL1:A
1
R83
120R 0.5W
2
Q4
D7
IN4004
Q3
8050
Q5
8050
9012
4K7
R84
AC
D6
IN4004
C63
4.7uF16V
R86
3K9
560R
R85
9012
Q6
100R
R87
C55
47uF 16V
R68
100R
D1
IN4148
330k
R89
R88
1K
R90
390R
14.5V
47K
R81
10pF
C36
+8V
10uF25V
C43
1
U4:A
84
3
2
12K
R80
NJM2100
L.CH
R.CH
GND
CN9
1
2
3
3
RL1:B
5
4
56K
R70
0.1uF
C35
20K
R79
20K
R72
C38
390pF
R.CH
L.CH
GND
CN10
3
1
2
6
RL1:C
7
8
R69
100R
R71
56K
10uF25V
C34
7
NJM2100
U4:B
6
C37
220uF16V
5
12K
R74
MUTE
GND
ROUT
LOUT
MUTE1
CN11
12345
47K
R73
10pF
C33
GND
Cambridge Audio Azur 840C CD Player
+5V
D12
1N4001
15K
R82
C39
10uF25V
C40
10uF25V
C41
0.1uF
8
7
6
5
VA+
AGND
AOUTL
AOUTR
U5
SDATA
LRCK3MCLK
DEM/SCL
CS4333/38
2
1
4
123
4
5
DIGDATA
CN13
390pF
C42
15K
R75
C32
10uF25V
C88
1nF
1
2
CN14
MCLK
AP18432/3 CD Servo PCB Schematic (DAC)
To enhance viewing, please print to A3 12
SLT+
FM+
DM-
SLT-
FM-
DM+
CN15
2
3
1
4
5
6
MOTORDRIVE
C58
C57
100nF
100nF
470uF16V
C46
+5V
13
15
18
19
24
14
17
20
22
16
21
C45
3
100nF
VO
GND
2
VI
U8
7805
1
100nF
C44
+8V
C47
470uF16V
100nF
C48
3
VO
GND
2
VI
7808
U7
1
CN21
FPDIS
1
2
C51
R31
10K
+5V
R30
10K
+8V
PWRDET
RESET
GND
K1
REMOTE
+5V
K2
CN7
567
4
123
CONTROLKEYS
C50
3300uF25V
100nF
C49
T2AL
FU1
100nF
C54
C52
14.5V
IN4004
100nF
IN4004
IN4004
D4
D3
IN4004
100nF
C53
D2
D5
100nF
2
1
ACIN
CN19
R67
14mmlink(840c only)
AC
GND
OPEN
CLOSE
OLT
CLT
CN8
1
234
5
DRAWDRIVE
+5V+5V
R29
10K
R34
470R
8550
Q10
Q9
8550
R33
470R
Q11
8050
8050
Q12
Q7
8050
Q8
8050
+5V
R64
D10
1N4148
D11
1N4148
R28
10K
23
VIN4
VIN3
SVCC
SGND
PVCC3
PVCC4
OUT(-)3
OUT(-)4
PWGND
PWGND
OUT(+)3
OUT(+)4
C56
VIN1
PVCC1
PWGND
OUT(+)1
VRI
OUT(-)1
U6
6
2
1
3
4
5
+8V
100nF
C59
470pF
C24
CN20
1
220uF16V
VIN2
PVCC2
PWGND
VCI
OUT(+)2
OUT(-)2
TA2092N
7
9
8
12
11
10
C61
100nF
C60
0.047uF
3K3
470pF
C25
R44
ROUT
MUTE1
MUTE
CN12
MUTE
2
234
5
10K
Cambridge Audio Azur 840C CD Player
NOFIT FOR 740/840C
R24 10K
R23 10K
4K7
R32
R25 1K
R26 10K
L3
REMOTE
+5V
1
123
456
7
23456
CN5
CN6
LCD
SEG16
SEG11
SEG18
SEG15
SEG14
SEG13
SEG12
SEG10
SEG9
SEG8
SEG17
SEG7
SEG6
100uH
NC
NC
44
41
50
49
48
46
43NC42
40
39
38
37
36
33
32
45
100nF
C86
VSS
ADK147ADK2
ADK3
VAREF
(BOOT)
PWRDET
51
+5VDD
VDD
52
FL/TL
53
NC
NC
54
NC
NC
R27
55
10K
NC
NC
56
NC
NC
57
NC
NC
58
NC
NC
LK1
LINK
59
NC
NC
60
OPEN= F/L
SHORT= T/L
NC
NC
61
NC
NC
62
NC
NC
63
NC
NC
64
NC
NC
65
NC
NC
66
NC
NC
67
NC
NC
68
NC
NC
69
NC
NC
70
NC
NC
71
NC
NC
72
NC
NC
73
SEG18
74
SEG17
75
SEG16
76
SEG15
77
SEG14
78
SEG13
79
SEG12
80
SEG11
SEG9
SEG10
SEG883SEG784SEG685SEG586SEG4
81
82
87
8
7
12345
678
R22NCR21
LCD
SEG5
SEG4
+5V
CN4
LCD
SEG3
SEG2
SEG0
COM0
COM3
COM1
COM2
SEG1
31
34
NC
SLT
CEE
CLT
OLT
BUS3
BUS235BUS1
BUS0
BUCK
D-OPEN
D-CLOSE
30
RES
29
CORW
28
NC
NC
27
NC
NC
26
NC
NC
25
NC
NC
24
NC
NC
23
NC
NC
10K
2K2
22
NC
NC
21
NC
NC
R66
R17
20
NC
NC
19
NC
NC
18
NC
NC
+5V
17
(WAIT)
16
(SO2)
15
(SI2)
14
SCK2
13
NC
NC
12
NC
NC
11
NC
NC
10
U3
TOSHCDMCU
SEG3
SEG289SEG1
88
90
91
MUTE
9
REMOTE
8
NC
NC
7
TEST
6
NC
NC
5
REMOTE
NC
NC
4
RESET
3
XIN
2
XOUT
1
VSSS
COM0
SEG0
COM2
VLC96NC
NC
COM3
COM1
VDD
94
99
92
93
95
97NC98
100
NC
NC
NC
100uF16V
C85
100uH
C83
470uF16V
L4
+5VCC
22K
SETLCDCONTRAST
C80
25pF
C81
25pF
CRYSTAL
X2
7.3728MHz
+5V
C84
220uF16V
L5
100uH
TR+
F
FC-
TR-
CN16
14
15
13
16
10uH
L2
Q1
9015
100uF16V
R62
C62
100nF
15R
C69
82K
R59
1K
R60
C21
0.0047uF
27K
R61
C22 0.047uF
C23
0.047uF
C70
3K3
3K3
R46
R47
R45
3K3
10K
R43
R42
3K3
R41
3K3
0.047uF
0.047uF
C27
C26
GND
LOUT
1
OSC
GND
GND
CN17
XTALI
CN18
XTALO
1
1
2
2
47uF16V
C18 47uF16V
C19
0.047uF
C87
1nF
C15
0.047uF
10R1/4W
15pF
15pF
X1
R40
CRYSTAL
C17
C16
16.9344MHz
R36
R35
+5V
R65
10K
C79
100nF
Q13
9014C
10K
R18
4K7
R76
R19
3K3
D9
1N4148
10uF16V
C82
1K
R20
+5VDD
1
8
23456
7
CN3
+5V
SI2
PROGRAMMING
GND
SO2
SCK2
BOOT
WAIT
RESET
VC
FC+
LD
C
D
VR
A
VCC
PD
GND
B
E
MECH
6
2
345
8
9
1
7
101112
0R
R58
47K
47K
47K
56K
47K
56K
R50
R48
R51
R49
R52
R57
100nF
C64
100nF
C67
C20
47uF16V
C65
220uF16V
C66
0.047uF
1
2
4
5
8
13
9
15
6
11
14
3
10
12
7
SEL
TNI
TEB
MDI
TEO
TEN
LDO
SBAD
2VRO
RFRP20BTC
SEB
RFCT22PKC
FEO
FEN
VRO
RFRPIN
U1
21
16
19
18
23
24
17
100nF
0.22uF
0.22uF
C72
C3
C4
100nF
C71
50
49
48
U2
TRO
FOO
VREF
51
RFGC
52
TEBC0
53
TEBC1
54
NC
TEBC2
55
DMO
56
2VREF
57
SEL
58
NC
FLGA
59
NC
FLGB
60
NC
FLGC
61
NC
FLGD
62
VDD3
63
VSS3
64
NC
IO0
65
NC
IO1
66
NC
IO2
67
NC
IO3
68
NC
DMOUT
69
NC
CKSE
70
NC
DACT
71
TESIN
72
TESIO1
73
VSS4
74
PXI
75
NC
PXO
76
VDD4
77
XVSS
78
XI
79
XO
80
XVDD
DVSR
DVDD
83
81RO82
R38
C28 47uF16V
C14 22uF16V
R39
10K
L1
47uH
FPI
TPI
FNI
VCC
RFGC
GMAD
GND
RFO
RFN2
RFGO
AGCIN
GVSW
TA2153FN
28
26
27
29
30
25
100nF
C2
220R
100K
R63
R4
3pF
C1
10K
R2
2K2
R1
C73
1K
100pF
R3
C7
0.01uF
C78
47uF16V
0.047uF
C5
C77
47uF16V
43
36
46
40
37
34
47
TEI
TEZI
33
44
38
35
45
42
41
32
39
FEI
RFI
RFZI
TSIN
RFRP
SBAD
RFCT
SLCO
VCOF
AVSS1
PVREF
AVDD1
VCOREF
TC9462F
DVSL86TEST187TEST288TEST389BUS0
BUS292BUS393VDD94VSS95BUCK96CCE97TEST4
DVR
BUS1
84LO85
98
90
91
99
NCNCNC
NC
R37
R11 10K
R12 10K
R13 10K
R14 10K
R15 10K
100R
J1
C68
22uF
10K
10K
10K
10K
R56
R55
R54
R53
C6 0.0027uF
C75 0.01uF
C74 47uF16V
C76
47pF
C8
31
0.015uF
LPFN
LPFO
TMAX
TMAXS
PDO
ZDET
HSSW
P2VREF
TESIO0
VDD2
MONIT
COFS
SPDA
SPCK
SBSY
SFSY
DATA
VSS2
VDD1
CLCK
SBOK
IPF
MBOV
9
DOUT
8
AOUT
7
BCK
6
VSS1
5
LRCK
4
EMPH
3
UHSO
2
HSO
1
TEST0
RST
TSMOD
100
NC
0.047uF
1uF16V
C12
C13
R8 10K
R7 68K
R9 47K
R5 15K
R6
30
29
28
27
26
NC
25
24
23
22
NC
21
NC
20
NC
18
NC
18
NC
17
NC
16
NC
15
14
13
NC
12
NC
11
NC
10
NC
NC
NC
NC
47uF16V
C29
R16
10K
C9
220K
D8
47uF16V
C10
47uF16V
C11
0.047uF
47R
R10
+5V
123
CN1
DIGITALOUT
+5V
GND
D-OUT
4
5
123
CN2
DATAOUT
BCK
GND
PCMD
EMPH
LRCK
1N4148
AP18432/3 CD Servo PCB Schematic (Servo)
To enhance viewing, please print to A3 13
Cambridge Audio Azur 840C CD Player
AP12927/8 CD Servo Board Layout (Top Side)
To enhance viewing, please print to A3 14
Cambridge Audio Azur 840C CD Player
AP12927/8 CD Servo Board Layout (Bottom Side)
To enhance viewing, please print to A3 15
Cambridge Audio Azur 840C Servo PCB Assembly BOM
AP Part
No
RESISTORS
15R 0.125 W Metal Film Resistor 1 R62
100R 0.125 W Metal Film Resistor 1 wirelink ( J1 ) 1011-001016-000
1K 0.125 W Metal Film Resistor 5 R3, 20, 25, 60 1011-002018-000
3K3 0.125 W Metal Film Resistor 7 R19, 41, 42, 44, 45, 46, 47 1013-302018-000
10K 0.125 W Metal Film Resistor 26
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
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
CAPACITORS
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
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
100nF Ceramic 50V 5mm Pitch 20
220nF Ceramic 50V 5mm Pitch 2 C3, 72 1100-224044-000
2
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
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
SEMICONDUCTORS
PY474 TA2153FN TOSHIBA RF Amplier 1 U1 4121-530103-000
PY475 TC9462FG
Value Description Qty Component Ident Factory Part no Notes
R1rotsiseRmliFlateMW521.0R74
siseRmliFlateMW521.0R074
eRmliFlateMW521.07K4
R2, 8, 11, 12, 13, 14, 15, 16, 17,
18, 26, 27, 28, 29, 30, 31, 39, 43,
53, 54, 55, 56, 64, 65
lateMW521.0K86
C5, 11, 13, 15, 19, 22, 23, 26, 27,
60, 66
C2, 4, 44, 45, 48, 49, 51, 52, 53,
54, 57, 58, 59, 61, 62, 64, 67, 71,
79, 86
C9, 10, 18, 20, 28, 29, 70, 74, 77,
78
TOSHIBA Digital Servo-chip
Processor
1011-003016-000
1100-473044-000
1106-104044-000
1102-470014-000
AP19969/3
000-410000-110104R1rotsiseRmliFlateMW52.0R01
knilesU.YLNOC048roF76R1knilmm41knil
000-810007-4101,01
wirelink is positioned
between C68 and L2. This
must be 100R resistor
000-810102-21014R1rotsiseRmliFlateMW521.0R022
000-610107-410143,33R2rot
000-610202-210166,1R2rotsiseRmliFlateMW521.02K2
000-610207-410167,23R2rotsis
000-810305-1101,5R1rotsiseRmliFlateMW521.0K51
000-810308-6101,7R2rotsiseRmliF
000-340201-001178C1hctiPmm5V05cimareCFn1
000-360272-10116C1hctiPmm5ralyM7n
000-260274-101112C1hctiPmm5ralyM7n4
ABIHSOTPFQSNIP001000-321026-49142U1
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
PY565 TOSHCDMCU
PY014 C8050D NPN Transistor TO92 4 Q7, 8, 11, 12 1300-805000-100
PY558 9014C NPN Transistor 1 Q13 1300-901400-100
1N4148 Signal Diode 3 D9, 10, 11 1401-141480-000
1N4004 Rectier Diode 4 D2, 3, 4, 5 1401-140040-000 stand up o PCB by 7.5mm
CRYSTALS
CONNECTORS
MISCELLANEOUS
T2AL
10uH Inductor 8mm Pitch 1 L2
Value Description Qty Component Ident Factory Part no Notes
MCU TMP87EP26F-1J15 SOP
TOSHIBA
8+022-OT8087613YP
58C955YP
iPmm2yaW3
2A delay 20mm Fuse 250V LBC
(low breaking capacity)
4-40511L1hctiPmm8rotcudnIHu74
000-301062-78143U1
t heatsink to top of driver
000-350029-02146U1CIrevirdrewoPABIHSOTN2902AT374YP
IC
mount on heatsing using
006-203080-87147U1rotalugeRV
heatsink comound only
007-433050-87148U1rotalugeRV5+022-OT5087530DP
001-000558-103101,9Q2rotsisnarTPNP05
001-005109-10311Q1rotsisnarTPNPC5109065YP
000-343961-00611X1hctiPmm5niP2zHM4439.61720YP
099-282737-00612X1hctiPmm5niP2zHM8273.7165YP
100-000200-00321271NC2TSJhctiPmm2yaW2
100-000300-0032,1NC1TSJhct
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
100-200816-03041UF1
001-00307
001-003101-40515,4,3L3hctiPmm8rotcudnIHu001
AP19969/3
Note: resistors, capacitors and other 'generic' electronic components are
not usually stocked by the manufacturer. Please obtain these locally.
17
VOLTSELECT RF1002B
SW1
Cambridge Audio Azur 840C CD Player
115/230V Marking
AP17977/2 Voltage Select Switch PCB Schematic
J2
FROM J4 (Common)
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
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