Cambridge Audio Azur 540-R Mk2 Service manual

First Issue Date: 29th June 2006 Second Issue Date: 9th October 2006 Third Issue Date: 02nd February 2007

SERVICE MANUAL

SPECIFICATIONS:

Audio Section

Power Output Front 100W RMSx2(8ohm, 1% THD)

Output Impedance Front (L/R) 8 ohm

THD (unweighted) less than 0.05%

540R V2.0

Centre 100W RMS (8 ohm, 1% THD) Surr. (L/R) 100W RMS x 2 (8 ohm, 1% THD) Surr. Back 100W RMS (8 ohm, 1% THD)

Centre 8 ohm Surr. (L/R) 8 ohm Surr. Back 8 ohm

Line Input

Input Impedances 150mV/47k

Frequency Response 20Hz~25KHz+0.5/-1dB Tone Control Range Bass ± 6dB - Treble ± 6dB S/N ratio (ref 1W/8 Ohm) 75dB

Subwoofer Output

Rated Output/Impedance 150mV/10k Frequency Response 10Hz~300Hz+3dB

FM Tuner Section

Frequency Range 87.5~108MHz Sensitivity 14dB (5uV) Antenna Terminal 75 ohm (unbalanced)

AM Tuner Section

Frequency Range 522~1629kHz, 9kHz step Sensitivity 68 dB/M Signal to Noise Range 30 dB Antenna Loop Antenna

Power Requirement AC230V~50Hz Max Power Consumption 615 Watts

Dimensions (W x D x H) 350 x 430 x 150

Weight 15.8kg

Gallery Court Hankey Place London SE1 4BB UK

Tel: +44 (0)20 7940 2200 Fax: +44 (0)20 7940 2233

AP19914/3

1

540R V2.0 SERVICE MANUAL

TABLE OF CONTENTS

Front Panel Information

Remote Control

Remote Control Function

Rear Panel Information

Exploded Diagram

Exploded Diagram Parts List

PCB Interconnect Diagram

Decoder PCB Schematic

Decoder PCB Board Layout

Main Board – Power Supply PCB Schematic

Power Output & Speaker Protection

Main/Video Out/Speaker Connections PCB Board Layout

OSD PCB Schematic

OSD / Co-axial in/out / Connect Board B / Control Bus)

YUV PCB Schematic

3

4

5

6

7

8-9

10

11-13

14-15

16

17

18

19

20-21

22

YUV PCB Layout

Input / Outputs PCB Schematic

Display Board PCB Schematic

Display / Volume / AV3 PCB Layout

Co-axial in/out / Control Bus PCB Schematic

Connect Board B

Connect Down PCB

AC Input / Relay / Headphones PCB Schematic

AC Relay / Headphones PCB Layout

Bill of Materials

IC Pin Layout Details

Serviceable Parts List

23

24

25

26

27

28

29-30

31

32

33-38

39-40

41

2

Cambridge Azur 540R V2.0 AV Receiver

14 15 16 17 18 19 20 21

Volum e

Tape/MD/CDR

DTS ES

Tun er FM /A M

Pro Logic /

Neo 6

Video 1 Video 2 Video 3

Standby/On

- Tuning +

Phones

1 2 3 4 5 6 7 8 9 10 11 12 13

Mode/Store

DVD

Stereo Dolby DigitalEX

CD/Aux

6.1 Dire ct

Video Left Right

DSP

Input

Mode

Video 3 In puts

azur 540R

AV Re ceiv er

NO. & NAME DESCRIPTION NO. & NAME DESCRIPTION

1. Standby /On

The power amplifier is in standby mode, indicated by the stand by indicator.

12. V ideo 3 Inputs

Input for VCR, Video Camera Recorder, etc. contains one video input and Analog Left and Right inputs.

2. Standby Indicator 13. Volume

Rotate this knob clockwise or counterclockwise, the master volume will be increased or decreased.

3. Phones

Jack for the stereo headphones.

14. DVD

When the coaxial /optical output terminal of a DVD player is connected to the DVD COAXIAL/OPTICAL IN terminal of this unit (5/6 rear panel), press this button to activate this function.

4.Tuning+/-

Tuner frequency or preset stations up & down.

15. V ideo 1

When the line output of an external player is connected to the AV 1 terminal of this unit (6/rear panel), or when the digital /optical output of another player is connected to the OPTICAL IN of this unit (6/ rear panel), press this button to activate this function.

5.Mode/Store

Press this button once to select Auto tuning mode; press it the second time to select the Manual tuning mode; press it the third time to select the Preset tuning mode, then by pressing the Tuning +/button to select a preset station; pressing and holding this button (in any of the

16. V ideo 2

When the line output of an external player is connected to the AV 2 terminal of this unit (6/rear panel), or when the digital /optical output of another player is connected to the OPTICAL IN of this unit (6/ rear panel), press this button to activate this function.

modes above) for 5 seconds brings up the “MEM” icon and display the next available preset for storing the current frequency.

6.Stereo

7.Dolby Digital EX

DTS ES

8.Dolby Pro Logic II

With the unit in the STEREO mode, only front left and front right speakers and Subwoofer are working. Digital Surround Mode

Surround modes for analog sources

17. V ideo 3

18. T uner FM/AM

19. T ape/MD/CDR

When you want to use Video 3 inputs, pressing this button to activate this function.

To listen to the radio broadcast, press this button to activate this function, press again to switch waveband.

Press this button when operating the tape deck.

/NEO 6

9.DSP Mode

10.Input Mode

11. Remote Sensor

Press this button to choose one of the following surround modes: THEATER, HALL, PASSTHRU, MOVIE, MUSIC and ROOM. Analog or digital Press this button to select input modes: ANA, OPT and COAX when using digital in.

Front Panel Information

20. CD/Aux

21. 6.1 Dir ect

When the coaxial output terminal of a CD player is connected to the CD COAXIAL IN terminal of this unit (5/ rear panel), press this button to activate this function. Press this button to select the 6.1 analogue input.

3

Cambridge Azur 540R V2.0 AV Receiver

2

3

4

6

7

9

10

12

14

17

18

20

22

21

24

25

27

28

1

5

8

11

13

15

16

19

23

26

29

30

Remote Control

4

Cambridge Audio Azur 540R V2.0 AV Receiver

NO. & NAME DESCR I PT ION NO. & NAME DESCR I PT ION

1. Power On/Standby

2. InputMode

Pressthisbuttontoturnthisunitonor off .

Press it to s elect:

Digital or Analogmode.

16. /Volumeup

17. /Tunedown

-Directionbutton.

- P ress thes e buttons to i ncreas e the volume.

- D irecti on button.

- T uner f requency down.

3. St er eo

4. PL II /NEO 6

5. DDEX /DTS ES

6. DSP MODE

7. Dynamic

8. LFE Trim

9. Test Tone

10. CH Select

With this unit in STERE O mode, only FrontLeft& FrontRightspeakersand Woof er hav e output. When receivingA nalog/digital PCM signals.

For digital surroundsignals

Press thi s button to c hoose one of the following surround modes: THEATER, HAL L, PASSTHRU, MOVIE, MUSIC and ROOM. Press thi s button r epeatedly to reach y our desired compression dynamic range.

Under the Pro L ogic 5. 1CH or D TS

5.1C H mode, press this button and adjust thevolumetosettheLowFrequency

output l evel T o bal an ce s peak ers i n D ol by D i gi tal or Dolby ProLogic mode.

S elec t channels by pushi ng thi s button,

thenusevolumekey tobalancespeakers

18. Enter

19. /Tuneup

20. / V ol ume d own

21.

Tuner AM/FM

22.

B ass/ Treble

23.

6.1 Dir ect

24.

PTY

25.

APS

Press thi s button when y ou want to enter the O SD setup menu.

-Directionbutton.

- T uner f requency up.

-Directionbutton.

- P ress thes e buttons to decr ease the volume. Press thi s button to al ternate between F M and A M.

Press thi s button f or B a ss / T r eb le adj ustment, then pr ess V ol up and V ol dow n to a dj ust the l evel . Press thi s button to sel ect the 6 .1 analogue input.

I n F M state, pres s thi s button, the c urrent program typeappears onthe display, using T uni ng +/- to s elec t the progr am ty pe y ou desi r e. Allocates andmemorizes radio stations automatically.

11. Sub On/Off

12. Delay

13. SPK Setup

14. OSD

15. Mute

Press thi s button to tur n on/of f the output of s ubwoof er.

Press thi s button to s et the del ay ti me f or the Dolby digital/Dolby Pro L ogic modes.

Under PRO LOGIC II or Digital state, it can change the desi red S peaker S etting shownonthedisplay. Press thi s button to acc ess the AV Receiver configuration settings by using the O SD menus. Press thi s button to mute the s ound, pus h again to cancel the mute f uncti on.

26.

Display

27.

St er eo / M on o

28.

Store

29.

Mode

30.

I n put S elec tor

W ith R D S , pres s thi s button r epeatedly to hav e P S ( progr am name) or C T ( cur rent ti me) . Press thi s button to al ternate between S tereo and M ono mode when l is ten to F M bro adcas t. Press ing thi s button to stor e the cur rent frequency.

Press ing thi s button to sel ect A uto /M anual tuni ng mode and P reset mode.

Press the c orres ponding button according to y our desi red s elec tion.

Remote Control Function

5

Cambridge Azur 540R V2.0 AV Receiver

1 2 3 4 5 6 87 10 11 12 13

1. FM / A M antenna

2. TV /Mon Out S-V ideo out ….. using the S-Video cable to connect this terminal to the corresponding terminal on the TV set. C omposite Videoout ….. using the RCA cable to connect this terminal to the corresponding terminal on the TV

3. S-V i deo in V ideo 1 / Video 2 ….. connect to the corresponding output terminals of a VCR. DVD ….. connect to the corresponding line output terminal of a DVD player.

4. C ompositeVideo in V ideo 1 / Video 2 ….. connect to the corresponding output terminals of a VCR. DVD ….. connect to the corresponding line output terminal of a DVD player.

5. C oax in CD ….. digital audio input to the digital output of a CD player. V ideo 1 / Video 2 ….. digital audio input to the digital output of a VCR. DVD ….. digital audio input to the digital output of a DVD player.

6. Optical in CD ….. optical audio input to the optical output of a CD player. V ideo 1 / Video 2 ….. optical audio input to the optical output of a VCR. DVD ….. optical audio input to the optical output of a DVD player.

7. Optical Out ….. digital audio output to the digital optical input of another amplifier, external recording device or

decoder.

8. C oax Out ….. digital audio output to the digital coaxial input of another amplifier, external recording device or decoder.

9. Contr ol Bus terminal …… This terminal is used for our system controlling.

10. C omponentV ideo In DVD ….. connect to the Cr Cb Y terminal of a DVD player. V ideo 1 / Video 2 ….. connect to the Cr Cb Y terminal of external players.

11. C omponentV ideo Out ….. connect to the Cr Cb Y terminal on the TV set.

12. R eset ….. this is used to reset the whole system (including the memories set).

13. Power On / off ….. pressing this switch to turn on /off this unit.

14. Power AC ….. connect to the AC socket.

15. Speaker terminals ….. connect to the external speakers with 4~8 impedance.

16. 6.1 Pr eamp Out ….. connect to the 7 channel input terminals of another amplifier.

17. 6.1 D irect In ….. connect to the 7 channel output terminals of another player.

18. A udio In Tape Rec ….. connect to the line input terminals on the Tape Deck. Tape Play ….. connect to the line output terminals on the Tape Deck. DVD ….. connect to the line output terminal of a DVD player. V ideo 1 / Video 2 ….. connect to the line output terminals of external players. CD / Aux ….. connect to the line output terminal of a CD player.

19. R S232C ……. This terminal is used for software upgrade.

9

141516171819 18

set.

Rear Panel Information

6

Cambridge Audio Azur 540R V2.0 AV Receiver

To enhance viewing, please print to A3 7

Exploded Diagram

Cambridge Audio Azur 540R V2 AV Receiver

1 6531 1010 0011 VOLUMN KNOB AL SKIN 1

00341054

8 5331 1010 0000 SCALEBOARD 1

13979

10 7631 1010 0000 MR CONTROL BOX BUTTON CUSHION 1

11 7331 1010 0011 MR CONTROL BOX BUTTON 1

12 0554 0117 1001 PHONE PCB 1

13 5011 3014 1000 SCREW BTB3.0X14 10

14 7631 1020 0000 7MM TAC SWITCH BUTTON CUSHION 8

15 7331 1020 0011 7MM TAC SWITCH BUTTON 8

16 7631 1030 0000 4MM TAC SWITCH BUTTON CUSHION 8

17 7331 1030 0011 4MM TAC SWITCH BUTTON 8

20 0054 1030 0004 VOLUMN PCB 1

21 0054 1030 0004 DISPLAY PCB 1

23 0054 1083 2005 AV3 PCB 1

9742

27 7531 1040 0000 540R front support right assy 1

29 7531 1050 0000 540R rear support right assy 1

30 7531 1020 0000 540R front support left assy 1

10513

0016003110553

37 0054 0110 1001 FUSE PCB 1

2693

23=LTLOB00000101139544

krameR.ytQnoitpircseD.ONtraP.leS

1BONKNMULOVPMA0000040113372

1revoc3VA1900001113973

86X0.3BTBWERCS00006

1SNELYALPSID0800010113475

1LENAPLA1220010113066

1EDIUGTHGILPMA0000030113477

01NMULOCBCP00000201

514X0.3BTBWERCS00014003110581

1SNELRI00000201134791

1NOITAROCED11000101139722

4DAPTOOF1000060113

4TOOF11000501139752

48X0.3MB00018003210562

1)THGIR(REVOCEDIS11000201134682

88X6.2BTBWERCS000080624

1)TFEL(REVOCEDIS11000101134623

1REVOCPOT11000101131633

88X6.2MBWERCS00018062810543

646X0.3BTBWERCS0

1yssatfeltroppusraerR04500000301135763

401=HNS01-SBC00000000117883

1REVOCMOTTOB1100010113

1CVPBCP01050040807704

76=HNS6-SBC00000006017814

204=H283-TDDK00000000437824

242=LTLOB00000301139534

2

1NAF13233152201954

2)3Hx4Dx01D(HSAW00000701139764

103=HNS03-SBC00000000317874

Spare Parts Exploded Diagram

8

Cambridge Audio Azur 540R V2 AV Receiver

01131515

53 0054 1003 2005 MAIN PCB 1

54 5040 8000 0001 WASH

56 5331 1050 0011 TRANSFORMER BRACKET 1

58 5020 3006 0360 NUT

59 5040 0300 0000 SPRING WASHER

60 5030 0800 3210 WASH

62 5020 8012 0201 NUT

65 0054 1140 1002 YUV PCB 1

0301133676

68 0054 1241 1006 OSD PCB 1

69 0054 1233 2005 OUTPUT PCB 1

70 0054 1381 2006 COAX PCB 1

72 0054 1280 1005 DECODE PCB 1

73 0054 1321 3006 CONNECT PCB(T) 1

74 0054 1321 0003 CONNECT PCB(B) 1

76 0054 1221 4006 CONTROL PCB 1

3.2 x 8.0 x 1.0mm 2

2TEKCARBNAF00000301133584

1TEKCARBBCPEDOCED00000601133594

2TEKCARBKNISTAEH00000201133505

1KNISTAEH000001

2NMULOCKNISTAEH00000201139525

28

1TLOB04000808510555

428X0.3BTBWERCS00018003110575

22.3

20.3

1REMROFSNART00005101000416

18

13MREHSAWGNIRPS10000003040536

1LAERUTAREPMET00000501139546

248x0.3APWERCS0008003310566

1REVOCKCAB1110

1XOBRENUT10003000008917

1BCP232S00003229450057

1REMROFSNARTSBTS00015531000477

Spare Parts Exploded Diagram

9

Cambridge Audio Azur 540R V2 AV Receiver

Power Cord in

Transformer

2P

Switch

Board

Transformer

2P

CN3

2P

CN4

2P

CN1

Relay Board

6P

3P

YUV

Board

HEAT-VARIABLE RESISTOR

2P

CN2

3P

CN5

Remote

Board

3P

CN7

2P

CN4

2P

CN8

2P

CN9

3P

CN11

10P

CN16

Speaker Board

2P

3P

CN23

CN7

2P

CN6

4P

6P

CN17

CN5

CN20

CN1

7P

2P

Main Board

FAN

2P

CN3

6P

CN5

Coaxial

Board

2P

OSD Board

7P

CN1

7P

CN6

CN4

5P

CN5

3P

5P

CN3

6P

CN36PCN2

5P

CN2

13P

CN4

Upgrade

Board

5P

Tuning

Board

13P

CN1

Decoder Board

16P

5P

J2

CN1

J1

7P

CN10

7P

2P

CN5

3P

CN2

4P

J200

Earphone

Board

6P

J1

16P

Display Board

J2

PCB Interconnect Diagram

3P3P

Volume

Board

2P

CN22

AV3 Board

3P

CN21

10

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2

D1

3

D2

4

D3

5

D4

6

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7

D6

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R38 10K

R40 10K R41

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EMAD1_DATA1_GPIO1

15

EMAD2_DATA2_GPIO2

14

EMAD3_DATA3_GPIO3

11

EMAD4_DATA4_GPIO4

10

EMAD5_DATA5_GPIO5

9

EMAD6_DATA6_GPIO6

8

EMAD7_DATA7_GPIO7

21

EXTMEM_GPIO8

5

RD_R/W_EMOE_GPIO11

20

INTREQ_ABOOT

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19

SCDIO_SCDOUT_PSEL_GPIO9

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58

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2

+

C93 100/10

C38

C40

104

36

37

35

34

32

33

31

30

28

29

27

26

22

23

21

20

15

16

14

13

17

18

+

C97 100/10

19

R47 10K

39

R112 8.2K

C92 102

25

40

R246

10K

VOUT

9'

+

C1

C28

10/16

104

32

B4

3

A15

B4

2

A16

B4

30

A17

24

OE

21

Q7

20

Q6

19

Q5

18

Q4

17

Q3

15

Q2

14

Q1

13

Q0

R15 10K

R14 10K

R16 10K R105

10K

2.4K

R17

R18 10K

R19 10K R23 10K

R24 10K R25 10K R26 10K R27 10K R28 10K R29 10K R30 10K R31 10K

R115

R113

1%1.5K

Q1

Q2

C3361

R114 220

R116 1%560

R117 2K

1

DGND

221

CN1

2P2.5

11NC34

33

11NC33

ALE/PROG#

32

11NC32

PSEN#

31

P2.7

30

P2.6

29

P2.5

28

P2.4

27

P2.3

26

P2.2

25

P2.1

24

P2.0

R48 10K R49

R106

112233445

7;'

9

34

DNU

SM5964C40J(PLCC44)

23

DGND

5;'

'*1'

VCC

VPP

PGM

GND

A8

A9

A10

IC5

A11

A12

AT27C020

A13

A14

CE

12

EA#35P0.736P0.637P0.538P0.439P0.340P0.241P0.142P0.0

IC11

MCU

R109

del

R111 del

Z2

del

C105

C106

del

DGND

10K

2.4K

5

CN2

VOL-DATA

5P2.0

757*

DGND

A75A66A57A48A39A210A111A0

VOL-CLK

1

31

16

DGND

27

26

23

25

4

28

29

22

43

3

CN8 3P2.0

9

20

19

18

17

16

15

14

13

12

11

44

VCC DNU

P1.0

P1.1

P1.2

P1.3

P1.4

P1.5

P1.6

P1.7

RESET

P3.011NC12P3.113P3.214P3.315P3.416P3.517P3.618P3.719XTAL120XTAL221GND22GND

11NC12

DGND

11223

13P(1.0)

,5

'*1'

C29 104

DGND

OE

VCC

D1

Q1

D2

Q2

D3

Q3

D4

Q4

D5

Q5

61+&':

D6

Q6

D7

Q7

D8

Q8

,&

GND10CLK

C45

+

C95

100/10

104

11NC1

1

2

3

4

5

6

7

8

9

10

3

3

3

12345678910111213

CN4

78&(

78&/.

DGND

3

3

5'6'$7$

78'$7$,1

9'

DGND

1

2

3

4

5

6

7

8

9

DGND

C96 100/10

DGND

3

78/('

72781(5

DGND

R32 10K

3

5'6&/.

78'$7$287

+

DGND

+

C46 104

+

C3 10/16

R33 10K R34 10K R35

R36 R37

AGND

1&

9

D1 4148

D2 4148

D3 4148

C2

C30

10/16

104

DGND

20

VCC

19

Q1

18

Q2

17

Q3

16

Q4

15

Q5

14

Q6

13

Q7

12

Q8

11

CLK

3

3 3 3

$

9&&

1

8

:3

$

2

7

6&/

$

3

6

6'$

'*1'

4 5

AT24C01

IC12

10K 10K 10K

11223344556677889

TU-L

TU-R

785

78/

$*1'

237212))

2.5VD

IC18

3

5VD

VIN

GND

1

DGND1

L5

5VA

FB

+

C94 100/10

AGNDAGND AGND

FL+

FL-

FR+

FR-

LS+

LS-

RS+

RS-

C+

C-

LEF+

LEF-

SURRR+

SURRR-

SURRL+

SURRL-

AINL+

AINL-

AINR+

AINR-

+

C44

C43

104

C74

104

2.2/50

AGND

C107 563

AGND

3816MUTE

DVD/DSP

SUBMUTE

MUTE

12V

To enhance viewing, please print to A3 11

Decoder PCB Schematic (1of 3)

Cambridge Audio Azur 540R V2.0 AV Receiver

SURRR-

SURRR+

SURRL-

SURRL+

R216

6.19K

C180

R200

2.94K

R208

887

R192

1.87K

+

C167

22/16

R199

2.94K

R207

887

R191

1.87K

+

C164

22/16

R201

2.94K

R209

887

R193

1.87K

C165

22/16

R202

2.94K

R210

887

R194

1.87K

C166

22/16

R204

2.94K

R212

887

R196

1.87K

C169

22/16

R203

2.94K

R211

887

R195

1.87K

C168

22/16

R206

2.94K

R214

887

R198

1.87K

C171

22/16

R205

2.94K

R213

887

R197

1.87K

C170

22/16

7.1 CH USE

390

IC3B

6

2068

5

C173

122

AGND

R215

C181

390

IC3A

2

2068

3

C172

122

AGND

R218

6.19K

C183

390

IC1A

2

2068

4

3

C175

122

AGND

6.19K

R217

C182

473

IC1B

6

2068

8

5

C174

104

AGND

R220

6.19K

C184

390

IC2B

6

2068

8

5

C177

122

AGND

6.19K

R221

C185

390

IC2A

2

2068

4

3

C176

122

AGND

6.19K

R219

C187

390

IC4A

2

2068

4

3

C179

122

AGND

6.19K

R222

C186

390

IC22B

6

2068

8

5

C178

122

AGND

C6

R126

+

7

8

1K

10/16

C63

C195

104

102

AGND

6.19K

C5

R125

+

1

4

1K

10/16

C62

C194

104

102

AGND

C14

R127

+

1

1K

10/16

C196

C64

102

104

AGND

C15

R128

+

7

1K

10/16

C65

C201

104

AGND

C23

R129

+

7

1K

10/16

C66

C198

104

102

AGND

C24

R130

+

1

1K

10/16

C67

C197

104

102

AGND

+

R131

1K

1

AGND

C69

104

C27

R132

7

1K

10/16

C68

104

AGND

BL

C25

10/16

C200 102

BR

+

C199 102

60P2.0*2

AGND

R229220

R228220

R227

R22633K

220

1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859

CN7

SW

GND

BL/BS

R62

AGND

47K

R69

47K

AGND

R232220

R231220

R230220

R234220

R233220

C

FL

FRLSRS

GND

VIDEO3 L

VIDEO3 R

33

R63

R64

47K

R70

R71

47K

R235220

R236220

GND

DVD L

DVD R

AGND

R66

R65

R68

R67

47K

26

DSP-FR

27

DSP-FL

28

DSP-C

29

DSP-SR

30

DSP-SL

31

DSP-CB

32

DSP-SW

15

DVD-FR

16

DVD-FL

17

DVD-C

18

DVD-SR

19

DVD-SL

20

DVD-CB

21

DVD-SW

R73

R72

R75

R74

47K

22K

47K

36

AGND

22

AGND

74

A-RI/O

75

A-LI/O

76

TAPE-RO

77

TAPE-LO

78

VIDEO-RO

79

VIDEO-LO

73

AGND

80

AGND

R76

R77

R241220

R237220

R238220

R239220

R240220

GND

VIDEO R

VIDEO2 L

VIDEO1 L

VIDEO1 R

CD/AUX R

CD/AUX L

6.1CH SELECT

R242

220

C8

C7

+

10/16

63

FR-SO65FL-SO

INPUT SELECT

AGND

1

47K

R78

47K

R79

47K

R80

47K

R81

47K

R82

47K

R83

47K

R84

47K

R85

47K

R86

47K

R87

47K

R88

47K

R89

AGND

R243220

R244220

GND

REC L

REC R

TAPE R

TAPE L

SW OUT

BL/BS OUT

C11

C12

C10

C9

+

10/16

43

C-SO

SR-SO41SL-SO

INGSW

10/16

39

37

CB-SO

IC17

BD3816K1

VOL

CD-RI2CD-LI3MD/DAT-RI4MD/DAT-LI5TAPE-RI6TAPE-LI7TUNER-RI8TUNER-LI9VIDEO-RI10VIDEO-LI11PHONO-RI12PHONO-LI

60

6.1CH=56P

GND

BR in

C OUT

FL OUT

SL OUT

SR OUT

FR OUT

BR OUT

+

C13

10/16

34

SW-SO

13

64

62

42

40

35

44

38

C-VI

FR-VI

FL-VI

SR-VI

SL-VI

CB-VI

SW-VI

VOL

AGND

TO DSP-L24TO DSP-R23AGND

14

AGND

Q7 C3326

AGND AGND

R247

2.2K

R248

10K

R250 100K

C191 104

AGND

R245220

C157

AGND

182

R176

5.49K

FR-

R184

1.65K

FR+

C149

562

AGND

C156

AGND

182

R175

5.49K

FL-

R183

1.65K

FL+

C148

562

AGND

C158

AGND

182

R177

5.49K

C-

R185

1.65K

C+

C150

+

562

AGND

C159

AGND

103

R178

5.49K

LEF-

R186

1.65K

LEF+

C151

104

+

AGND

C161

AGND

182

R180

5.49K

RS-

R188

1.65K

RS+

C153

562

+

AGND

C160

AGND

182

R179

5.49K

LS-

R187

1.65K

LS+

C152

562

+

AGND

C163

AGND

182

R182

5.49K

R190

1.65K

C155

562

+

AGND

C162

AGND

182

R181

5.49K

R189

1.65K

C154

562

+

AGND

C122

C123

104

C82

C83

+

47/25

72

VCC

25

70

AGND

TREBLE

BASS

LOGIC

DGND66MUTE67CLK68DATA

71

VEE

TRE2 TRE1

BAS4 BAS3 BAS2 BAS1

AGND

FR-O

AGND

SR-O

CB-O

AGND

SW-O

AGND

69

C188

472

C189

60

472

59

AGND 58 57 56 55

61

10/16

54

10/16

53

FL-O

52

10/16

51

C-O

10/16

50

10/16

49

SL-O

10/16

48

47

46

45

+C16

AGND

10/16

R166

68K

AGND

IC22A

2068

C124

C125

C126

C127

104

R57

4.7K

AGND

C18

+

C17

+

C20

+

C21

+

C22

+

C19

+

R161

R160

68K

AGND AGNDAGND

IC4B

2068

LEF

R223

5

2.2K

8

C190

331

6

C128

104

R224

R225

6.8K

AGND

3

4

AGND

1

2

104

R58

4.7K

AGND

R162

R164

R163

68K

AGND

7

C147

333

4.7K

C129

104

R165

68K

AGND

C130

104

AGND

C26

10/16

+

R167

68K

AGND

150

R151

+

C134

R155

100/16

150

+

C135

AGND

R156

100/16

150

R153

150

R152

R158

+

C136

150

100/16

R157

+

C137

150

R154

100/16

150

+7V

-7V

VOL-DATA

VOL-CLK

3816MUTE

SUBMUTE

DSPBR

DVDBR

BROUT

L-O

R-O

TU-R

TU-L

12V

-12V

-vv

To enhance viewing, please print to A3 12

Decoder PCB Schematic (2 of 3)

J2

5P2.5

Cambridge Audio Azur 540R V2.0 AV Receiver

IC14 TC4053BF

2

Y0

1

C142 47/25

AGND

Y1

12

X0

13

X1

5

Z0

3

Z1

6

INH

16

VDD

C110

104

2.5V

C117 104

IC16 KA7805A

1 3

2

C56 104

AGND

R133 634 C85

471

IC20B

6

2068

5

R51 10K

C50

104

R136 634 C87

2

2068

3

R52 10K

C53

104

-V

D4 DB104G

AC1

V+

2 C A

R141

7

8

AGND

R139

3.32K

471

4

AGND

R140

3.32K

AC1

V+

C2 A

C51

104

1

C54

104

D5

DB104G

C138 2200/16

C139

3300/25

C140

3300/25

R135

90.9

R134

634

R145

332

R143

90.9

R137

634

R146

332

634

C86 471

6

R142

7

2068

8

90.9

5

IC21B

C52 104

AGND

R138

C88 471

2

2068

3

C55 104

AGND

+

C114 104

+

C118 104

+

C119 104

1

2

U4 KA7912A

4

U1 KA7805

VIN

U2 KA7812

VIN

634

IC21A

+

C133 100/16

AGND

R144

1

90.9

C132

+

100/16

AGND

3

D

VOUT

GN

C141

2

100/10

D

VOUT

GN

C143

2

47/25

C144 47/25

1

D

VOUT

GN

C108 272M

R148

150

R150

150

C109 272M

R149 150

R147

150

5VD

+

C115 104

DGND

3

+

C120 104

AGND

+

C121 104

3

AINR+

AINR-

AINL+

AINL-

Q6

C2120

R173 1K

C145 333

AGND

C146 333

R174

1K

A950

6.8

R171

+

C78

C80

D6

47/25

7.5V

+

C79

C81

D7

47/25

7.5V

R172

6.8

Q5

DVD BR

DSP BR

U3 LD1117DT25

3

2

I

O

A

C116 104

DGND

+

1

AGND

C99 100/10

R168

1W/0.22(RF)

R169

1W/0.22(RF)

R170

1W/0.22(RF)

R119

+

1.5K R123

1K

AGND

+

R121

2.8K C98

100/10

AGND

IC20A

C101 100/10

R120

+

1.5K

R124

1K

AGND

R122

+

2.8K

C100

100/10

AGND

-V

R-O

L-O

-vv

5P

5

7.5V~

4

3

14.5V~

2

14.5V~

1

AGND

100/10

15

YCOM

10

B

14

XCOM

11

A

4

ZCOM

9

AGND

C

S

7

VEE

VS

8

AGND

C111

104

AGND

C113 104

C112 104

R61 820K

AGND

IC15

1

IN 1

AGND

IN 2

AGND

VEE

AGND

VCC

LOGIC

OUT 1

OUT 2

DGND

MUTE

DATA

SEL

CLK

2

3

4

5

6

7

C131

BR

+

14

10U/16

13

12

15NC12

11

AGND

10

9

8

AGND

R159 68K

DVD/DSP

BR OUT

3816 MUTE

VOL-DATA

VOL-CLK

BD3812F

7.1 CH USE

2.5VD

5VD

+

C102

C57 104

AGND

5VA

12V

+7V

-7V

-12V

C58

C59

104

CE

104

C60

104

C61

104

DGND

AGND

To enhance viewing, please print to A3 13

Decoder PCB Schematic (3 of 3)