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: [phone] Fax: [phone]

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 Amplier 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 Rectier 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