Cambridge 640r Service Manual

640R

Issue Date: 21st May 2007

SERVICE MANUAL

SPECIFICATIONS:

Audio Recording Video Outputs 1 Composite, 1 S-Video
Power Output 2 x 120 watts rms per channel

8 ohms (two channels driven) Other Connections 1 ¼” / 6.35mm Headphone Output
(32 to 600 ohms recommended)
7 x 100 watts rms per channel 1 Control Bus Input / Output
8 ohms (all 7 channels drive n) 1 IR Emitter In
1 RS232C

Total Harmonic Distortion <0.006% @1kHz 1 IEC type mains inlet

Crosstalk <-60dB @ 1kHz Incognito Ready / A-BUS Ready 2 A-BUS Keypad Outputs (2

3 IR Emitter Outputs
Frequency Response (-1dB) 10Hz - 20kHz – 1dB 2 Composite Video Outputs (2
1 External PSU Input 24V DC

S to N Ration (unweighted) >90dB ‘A’ weighted

Audio Input Impendence / Sensitivity 47kOhms / 175mV or greater

Digital Input Impendence 75ohms (Coaxial / SPDIF)
Max Power Consumption 1400w
Tone Control
Bass +/- 10dB @ 100Hz Dimension – H x W x D 150 x 425 x 420mm
Treble +/-10dB @ 10kHz (Inc a ll terminals & controls)

Tuner Weight 15kg (33lbs)
FM mode 87.5-108MHz, 75 ohm coaxial aerial
AM mode 522-1629kHz, 300 ohm loop aerial Decoding Modes Supported
PCM Stereo Linear PCM with or without digitally
Video created Sub, 16-24 bit da ta, 44.1, 48 or 96kHz
Video Levels / Impendence

-Composite (CVBS) 1Vp-p / 75 ohm PLII Movie 5.1 PLII matrix decode optimised for movie

material

-S-Video (S-VHS) Y 1Vp-p 75 ohm
C O 286 Vp-p / 75 ohm PLII Game 5.1 PLII matrix decode optimised for game material

-Component Y 1p-p / 75ohm PLIIx Movie 6.1/7.1 PLIIx matrix de code optimised for movie
Cb/Cr 0.75Vp-p / 75ohm material
Pb/Pr 0.75Vp-p / 75ohm
PLIIx Music 6.1/7. 1 PLIIx matrix decode optimised for m usic

HDMI

Transfer of all resolutions up to and including
1080p @ 50/60Hz (1920 x 1080) supported, with HDCP handshaking. PLIIx Game 6.1/7.1 PLIIx m atrix decode optimised for game
material

General
Architecture Crystal CS43122 24 Bit 192kHz Dolby Digital Stereo (2/0) + PLII Movie

capable DAC for Front Left & Right 5.1 PLII matrix decode of Dolby Stereo material
Dolby Digital Stereo (2/0) + PLII Music
Crystal CS52526 24 Bit 192kHz 5.1 PLII matrix decode of Dolby Stereo material
Capable CODEC for surround channels + Dolby Digital Stereo (2/0) + PLII Game

Dolby Digital Stereo (2/0) + PLIIx Music
Audio Inputs 8 Line Leve l Analog 6.1/7.1 PLIIx matrix decode of Dolby Stereo material
Tuner (FM / AM)

7.1 Analog Input Dolby Digital Stereo (2/0) + PLIIx Game
5 Digital Co-axial, 6 Digital Optical 6.1/7.1 PLIIx matrix decode of Dolby Stereo material

Video Inputs 5 Composite, 5 S-Video Dolby Digital (Up to) 5.1 digital surround sound
3 Component Video, 3 HDMI

Dolby Digital + PLIIx Movie PLIIx M ovie post process of DD5.1 giving 6.1 or
Main Audio Outputs 7 Amplified Speaker Outputs 7.1 (7.1 has mono back surrounds)

7.1 Preamp Outputs Dolby Digital + PLIIx Music PLIIx Music post process of DD 5.1 giving 6.1 or

7.1 (7.1 has mono back surrounds)
Main Video Outputs 1 Composite, 1 S-Video Dolby Digital EX 6.1 or 7.1 (7.1 has mono back surround) decode of

1 Component Video, 1 HJDMI 6.1 Dolby Digital EX material
DTS Neo 6 Cinema 5.1/ 6.1/7.1 Neo 6 matrix decode (6.1 source
Recording Audio Outputs 2 Line Level Analog materials) 5.1 decode has phantom rear
2 Digital Co-Axial, 2 Dig ital Optical centre, 7.1 decode ha s mono back surround)

Standby Power Consumption <10w

Quiescent Power Consumption <70w

material

24 Bit 2 channel A/D conversion. 5.1 PLII matrix decode of Dolby Stereo material

Crystal CS43122 32 bit DSP Dolby Digital Stereo (2/0) + PLIIx Movie

6.1/7.1 PLIIx matrix decode of Dolby Stereo material

nd

/ 3rd Zone)

nd

/ 3rd Zone)

Gallery Court Hankey Place London SE1 4BB UK - Tel: [phone] Fax: [phone]

AP21900/1

640R SERVICE MANUAL

TABLE OF CONTENTS

Front Panel Controls 4

Rear Panel Connections

Remote Control

Block Diagram

Exploded Diagram

Exploded Diagram Parts List

Serviceable Parts List

Mains Transformer & Main Board P.S.U Circuit Diagram

Main board (Inputs) Circuit Diagram

Power Amplifiers Circuit Diagram

Main Board PCB Layout

Video Board Direct Input / Pre-outs Circuit Diagram

Video Board Coaxial Input / Outputs Circuit Diagram

Video Board (YUV) Circuit Diagram

Video Board (Composite & S-Video) Circuit Diagram

Video Board OSD Circuit Diagram

Video Board Rescaling / Conversion Circuit Diagram

Optical Board Circuit Diagram

5

6

7

8

9-10

11

12

13

14

15

16

17

18

19

20

21

22

Video / Co-axial / Optical PCB Board Layout (Top Side)

Video / Co-axial / Optical PCB Board Layout (Bottom Side)

Power Amplifier 1 Circuit Diagram

Power Amplifier 2 Circuit Diagram

Power Amplifier 1 & 2 PCB Board Layout

Decoder Circuit Diagram

PSU (on decoder) Circuit Diagram

Decoder MCU Circuit Diagram

Decoder PCB Board Layout (Top Side)

Decoder PCB Board Layout (Bottom Side)

HDMI Circuit Diagram

HDMI PCB Board Layout (Top Side)

HDMI PCB Board Layout (Bottom Side)

Fuse / RS232 / Speaker Board Circuit Diagram

Fuse / RS232 / Speaker Board Layout

Abus Zone Circuit Diagram

Abus Zone Board Layout (Top Side)

23

24

25

26

27

28-30

31

32

33

34

35

36

37

38

39

40

41

Abus Zone Board Layout (Bottom Side)

Display Board & Volume Encoder Circuit Diagram

Display PCB Board Layout

42

43

44

2

AV3 Circuit Diagram 45

AV3 Board Layout

Bill of Material

IC Details

Software Upgrade Procedure

46

47-57

58-59

60-62

3

Cambridge Azur 640R AV Receiver

Volume

azur 640R

AV Receiver

7 8 9 10 11 12 13

DVD Video 1

4

Video 2 Recorder 1 Aux CD Recorder 2 7.1 Direct

Digital Processing Options

Stereo

Audio

InputType

Modes

Phones Tuning Mode/Store

1

5

Tuner FM/AM

–+Standby/ On

3

2

15 16 17 18 19

Standby/On

1

Switches the unit between Standby mode (indicated by dim power LED)
and On (indicated by bright power LED). Standby is a low power mode.
The unit should be lef t in Standby mode when not in use.

2

Phones

Allows for the connection of stereo headphones with a 6.35mm/¼" Jack
plug. Headphones with an impedance of between 32 and 600 ohms are
recommended.
the main and pre-amp outputs and select a 2-channel stereo down-mix
to be created for headphone use.

3

Tuning +/-

Note:

Plugging in headphones will automatically mute

Used to tune FM frequencies and skip presets in Tuner mode.

4

Mode/Store

Press to cycle between Tuner modes and for storing presets (refer to the
‘Operating Instructions’ of this manual for more information).

Tuner FM/AM

5

Press to select the tuner for output through the 640R. Once in Tuner
mode also use this button to switch between FM and AM modes.

Display

6

Displays the status of the unit. Also receives IR commands from the
supplied Azur remote control. A clear unobstructed line of sight between
the remote control and the sensor is required.

7

DVD

Press to select the source equipment connected to the DVD input.

8

Video 1

Press to select the source equipment connected to the Video 1 input.

9

Video 2

Press to select the source equipment connected to the Video 2 input.

10

Recorder 1

Press to select the recording device connected to the Recorder 1 input.

11

Aux

Press to select the source equipment connected to the Aux input.

12

CD

Press to select the source equipment connected to the CD input.

13

Recorder 2

Press to select the recording device connected to the Recorder 2 input.

6

14

Dolby Digital/

Pro Logic/Neo/

DSP Surround

Modes

Video

DTS Surround

Input Type

Modes

7.1 Direct

14

Press to select a 7.1, 6.1 or 5.1 source (DVD-A or SACD player etc)
connected to the 7.1 Direct In sockets.

N

ote:

The 640R remembers the audio and video input type and
processing mode for each individual source input. These are recalled
each time a source is selected.

15

Audio input type

Press this button to toggle between analog or digital (optical/coaxial)
input types for the currently selected source input.

16

Stereo modes

Press to listen to a source in either digitally processed stereo or stereo
and sub modes.

17

Pro Logic/Neo/DSP surround modes

Press to select between various Pro Logic II/IIx, DTS Neo:6 effects for
matrix encoded analog or digital material or for post-processing DD/DTS

N

material (
material as it does not include embedded encoding type flags so
manual selection is required). Also selects various DSP created
surround sound modes for uncoded stereo sources.

18

Press to select Dolby Digital or DTS surround modes (with suitably
encoded digital source material). These modes can only be decoded
from digital audio sources (via Coaxial or Optical inputs).

19

Press to select the video input type (Composite, S-Video or Component
Video) you wish to use for the current source input.

20

Press to listen directly to the analog inputs for the current source with no
analog to digital or DSP processing for highest possible stereo sound quality.

21

ote:

The 640R is unable to auto-detect this kind of source

Dolby Digital/DTS surround modes

Video input type

Analog stereo direct

Volume

20

Analog

Stereo Direct

Video 3 L R

23

21

Audio Video S-Video

24

Use to increase/decrease the level of the sound fromthe outputs of the 640R.

22

Mute

Press to mute the sound from the main and pre-amp outputs of the
640R. Press again to cancel mute.

23

Video 3 source button

Press to select a video camera recorder/video games console
connected to the Video 3 input sockets.

24

Video 3 input sockets

Connect a video camera recorder/video games console to the 640R.
Audio/Video and digital optical inputs are provided.

Mute

22

Optical

Front Panel Controls

4

Cambridge Azur 640R AV Receiver

8 9 10

DVD

TV/Mon Out

Update

1

Normal

e S-Video

OutIn 1

RS232C

AM 300Ω

FM 75Ω

Composit

Digital Optical

In2 In 3

Digital Co-axial

L

R

4

Tuner

Video 2Video 1 Recorder 1 DVD Rec 2 Aux

HDMI

2

3

InInIn nItuOnI Out

5

Rec 2

In In

TV/Mon Out

L

R

azur 640R AVReceiver

6

CompositeS-Video

Digital Optical Digital Co-axial

CD

L

R

AvisRisque de choc electrique. Ne pas ouvrir. Ne pas obstruer la ventilation.

Achtung Vorm öffnen des gërates. Netzstecker ziehen. Ventilation nicht verschließen.

MaxPower Consumption: 1400W
Power Rating: 230V AC 50Hz

Designed in London, England

www.cambridge-audio.com

7

CautionRisk of electric shock. Do not open. Do not obstruct ventilation.

6

Video 1

Y

Y

Y

Cb/Pb

Cb/Pb

Cb/Pb

Component

Cr/Pr

Cr/Pr

Cr/Pr

Video 2

Keypad 1 Keypad 2

PSU24V DC In

Use
approved
PSU only

11 12

International Patent Pending LeisureTech Electronics Pty Ltd

Surround

Surround

Back Left/

Back Right

Surround Back

Recorder 1

Y

Cb/Pb

SBL/SB

Cr/Pr

Speaker Impedance 4-8 Ohms

Centre

L

SL

7.1 Direct In 7.1 Preamp Out

R

L

C

SL

SR

SW

SBL/SB

SBR

Multi-Room

IR3

Video Out

12

Front

Surround

Surround

Right

Right

Left

1.51.61.7

CR

Manufactured in an
ISO9002 approved facility

SR

SW

This device complies with
part 15 of FCC rules

SBR

Control

Bus

InIn

OutIR1 IR2

Emitter

On

Power

16

Off

13

Power AC

15

Front
Left

14

Serial No. label fitted on underside

1

Update/Normal

For dealer use only ­and software update mode. Do no
connections to it in update mode as damage may result!

2

RS232C

Used for control of the 640R in Custom Install situations. A full protocol
is available for the 640R on our website.

3

FM/AM antenna

All tuner antenna connections are made here. Refer to the ‘Antenna
Connections’ section of this manual for more information.

4

HDMI

Inputs and output to a suitable TV/Monitor. The HDMI inputs can be
assigned in the OSD to the DVD, Video 1, Video 2 or Rec 1 sources, see
later section.

5

Video 1/2, Recorder 1/2, DVD, Aux

Please refer to the connection diagrams later in this manual for more
information on these inputs and outputs.

6

TV/Mon outputs

Switches the 640R between normal (default) mode

t change the mode to update or make

S-Video - Connect to your television via S-Video cable.

Composite - Connect to your television via 75 ohm RCA phono cable.

Component - Connect to the Cr/Pr, Cb/Pb, & Y terminals of a television

set.

Normally only one type of connection will be used. These outputs are
also used to view the 640R’s On-Screen Display setup menus.

7

Heat tunnel vent grille

Allows cooling of internal circuitry.

8

Component Video inputs (DVD, Video 1/2, Recorder 1)

O NOT OBSTRUCT!

D

Connect the Component Video outputs from the source equipment.

ote:

N

The preferred connection method for video inputs or outputs is
always Component Video then S-Video then Composite Video then
HDMI. HDMI and Component Video sources often also support
Progressive Scan which gives better picture quality if suppor ted by both
your DVD player and TV.

9

7.1 Direct In

Connect to the output terminals of a DVD-A, SACD player or other

5.1/6.1/7.1 analog source.

10

7.1 Preamp Out

Connect to the 5.1/6.1/7.1 channel input terminals of another amplifier
system, separate power amps, subwoofer or active loudspeakers.

11

A-BUS™ Ready/Incognito Ready™ multi-room outputs

PSU In - Connect an Incognito PS5 to supply power to the connected

multi-room keypads/speakers.

Keypad 1/2 - Connect one or two Incognito A -BUS KP10 keypads (or
other A-BUS compatible keypads) or AS10 Active Ceiling Speakers using
CAT5/5e cable, allowing 2nd/3rd zone multi-room capability.

IR - Three IR emitter outputs for remote control of source equipment.

Video Out 1/2 - Provides video feeds to the 2nd/3rd zone.

Please refer to the ‘Multi-Room’ section of this manual for more
information on connections and set-up.

12

Emitter In

Allows modulated IR commands from multi-room systems or IR repeater
systems to be received by the 640R. Commands received here are not
looped out of the Control Bus. Refer to the ‘Custom Installation’ section
for more information.

13

Control Bus

In - Allows un-modulated commands from multi-rooms systems or other

components to be received by the unit.

Out - Loop out for control bus commands to another unit.

14

Speaker terminals

Connect to loudspeakers with an impedance of between 4-8 ohms. 7.1,

6.1, 5.1 or less connections can be made.

15

Mains power lead

Once you have completed all connections, plug the AC power lead into
an appropriate mains socket. The AV receiver is now ready for use.

16

Power On/Off

Switches the unit on and off.

Rear Panel Connections

5

Cambridge Azur 640R AV Receiver

The 640R is supplied with an Azur Navigator remote
control. Insert the supplied AAA batteries to use. For full
details of the various adjustment functions available from
the remote, refer to the later sections of this manual.

Standby/On

Switches the unit between Standby mode and On.

Analog Direct

Directly selects a stereo analog input for the current
source with no A/D conversion or DSP processing.

Stereo Modes

Selects Stereo or Stereo + Sub modes for Analog or Digital
sources (digitally processed).

PLIIx/Neo/DSP

Selects from various matrix encoded surround processing
modes for analog or digital sources (digitally processed).

DD EX/DTS ES

Selects digital surround processing modes for Digital
sources only.

Dynamic

Press repeatedly to reach the desired dynamic
compression range (Dolby Digital or DTS modes only).

Sub On/Off

Press to turn on/off the output of the subwoofer. Also,
hold down and then press the volume up and down
buttons to adjust the overall sub level if desired.

PTY (Program Type Search)

Press to search by program type when in Tuner mode.
Refer to the ‘Operating instructions’ section of this
manual for more information.

APS (Auto Program Search)

Hold down for 4 seconds to allocate and memorise radio
stations automatically.

Display

Press to view the current source material and decoding
mode. When listening to FM with RDS, press to cycle
round various RDS information modes.

Stereo Mono

When listening to FM, press to alternate between stereo
and mono modes.

Store

Press to store the current frequency when in Tuner mode.

Mode

Press to select Auto/Manual or Preset tuning when in
Tuner mode.

Mute

Mutes the audio on the AV Receiver. Press again to cancel
mute.

Volume

Increase or decrease the volume of the AV receiver
output. Also used as up/down in the OSD setup menus.

Stereo

Analog

Modes

Direct

DD EX

Dynamic

DTS ES

Stereo

Store Mode

Mono

Vol

Enter

Vol

Bass

Treble

Audio In

Type

Tuner

AM/FM

Video2 Rec1 Aux

CD Rec 2

PL IIx

Neo/DSP

On/Off

DisplayPTY APS

Direct

Video In

Type

Video 1DVD

Tune / Left & Right

Press the right arrow to increase tuner frequency/change
preset. Press the left arrow to decrease tuner
frequency/change preset. Also used to scroll left/right in
the OSD setup menus.

Enter

Used in the OSD setup menus.

On-Screen Display (OSD)

Press to turn on and off the on-screen set-up menus when
connected to a monitor/screen via Composite, S-video or
Component connections.

Bass/Treble

Press for bass/treble adjustment, using the Volume
up/down buttons.

Sub

stereo direct and 7.1 direct modes.

N

ote:

Bass/Treble is disabled in analog

7.1 Direct

Selects the 5.1/6.1/7.1 direct input.

Audio In Type

Switches the 640R between analog and digital inputs for
the currently selected source.

Video In Type

Selects Composite video, S-Video or Component video as
the analog video input type for the current source
(Additionally HDMI can also be assigned in the OSD
menu).

Tuner AM/FM, DVD, Video 1, Video 2, Rec 1,
Aux, CD, Rec 2

Press the corresponding button to change the input
source. Pressing the Tuner AM/FM button a second time
toggles between AM and FM modes.

7.1

The above button descriptions are naturally brief. Please
refer to the ‘Operating Instructions’ section of this
manual for more information on the relevant functions
implemented.

Remote Control

6

Cambridge Azur 640R AV Receiver

Switch

Board

TRANSFORMER

TRANSFORMER

Cocket

Board

2P CN14

2P CN11

2P CN10

3P CN7

10P CN1

CN20

2P CN13

Fuse Board

Zone Board

Speaker Board

7P CN16

7P CN6

2P CN9

3P CN21 6P CN4

4P CN17

5P CN5

5P CN8CN23CN2CN12

OSD Board

10P CN7

Main Board

FAN

5P CN14P CN11

2P CN3

6P CN6

5P CN2

Video Board

42P CN18 42P CN3

12P CN25

6P CN19

12P CN4

7P CN1

Optical Board

Coaxial Board

3P CN4 13P CN7

13P CN7

13P CN9

Decode Board

5P CN6

3P CN5

16P CN8

11P CN10

11P CN3

Tuning

Board

13P CN1

3P CN12

6P CN14

3P CN18

5P CN16

Connect Board

5P CN15

3P CN17

13P CN13

HDMI Board

3P CN2

4P CN1

5P CN8

Update

Board

3P CN12

3P CN12

16P CN4

3P CN5

3P CN1

13P CN1

droaB3oediVdroaBemuloVdroaByalpsiDdroaBenohpraE

To enhance viewing, please print to A3 7

Block Diagram

Cambridge Azur 640R AV Receiver

To enhance viewing, please print to A3 8

Exploded Diagram

Cambridge Azur 640R AV Receiver

PF088 2 7941 1050 0000 AV3 cover 
PF089 16 4009 1015 0004 Mains Transformer
PF024 15 4000 1355 1000 Standby Transformer
PF090 P6 0064 1000 0002 Main PCBA 
PF091 P7 0064 1360 0001 Power AMP 1 PCBA 
PF092 P8 0064 1361 0001 Power AMP 2 PCBA 
PF093 P11 0064 1180 0002 Video PCBA 
PF094 P14 0064 1370 0001Optical PCBA 
PF095 P16 0064 1461 0001 HDMI PCBA 
PF096 P17 0064 1280 0002 Decoder PCBA 
PF097 18 6141 1020 0000 Top Cover - Silver 
PF098 18 6141 1020 0000 Top Cover - Black 
PF099 48 6441 1020 0000 Right Side Panel - Silver
PF100 48 6441 1020 0000 Right Side Panel - Black
PF101 14 6441 1011 0000 Left Side Panel - Silver
PF102 14 6441 1011 0000 Left Side Panel - Black
PF103 1 7331 1040 0000 Amp Volume Knob - Silver
PF104 1 7331 1040 0000 Amp Volume Knob - Black
PF105 2SA1943 Transistor 
PF106 2SA1837-Y Transistor 
PF107 2SC4793-Y Transistor 
PF108 encoder EC16B2401047AA VRI Master Volume
PF083 IC LA7108
PF085 IC 74HC4051A
PF086 IC 74HC4053A
PF087 IC REF4053BT

PY1262 46 Foot pad (same as 840A)

noitpircseDfeRgniwarDtraPPA

Available Spare Parts

9

Cambridge Azur 640R AV Receiver

1BONKEMULOVPMA0000040113371
1REVOC3VA0000050114972
1LENAPLA0000210114063

LENAPTNORF0000110114574

BREMROFSNART0000020114358

PPUSBCP00000001067811

4641

15

17 5931 1050 0000 SENSOR AL BRACKET FOR TRANSFORMER 1

19 7331 1010 0000 MR CONTROL BOX BUTTON (BLACK) 1
20 7341 1010 0000 5.5MM TAC SWITCH BUTTON(BLACK) 9

21 7331 1020 0000 7MM TAC SWITCH BUTTON(BLACK) 11

27

29 5341 1040 0000 WIND TUNEL RIGHT BRACK 1

23

4000 1355 1000 STANBY TRANSFORMER

THGILPMA00000301134732

143562

8760 0803 0001

493

8934

03P

HEXAGONAL COLUMN HTP-308 5

DNIW00000101149563

2TEKCARB
1NOITAROCED0000010114975
1SNELYALPSID0000010114476
1LENAPBUS0000210114357
1TEKCAR
1TEKCARBBCPESUF0000080114359
25=HNMULOCTROPPUSBCP00000050067801
101=HNMULOCTRO
1CVPBCPESUF00000401147721
2TEKCARBLENAPRAER00000201145731
1LENAPEDISTFEL0000110114
1
1REMROFSNARTNIAM40005101900461

1REVOCPOT00000201141681

1TEKCARBBCPEDOCED00000601143522
1EDIUG
1TNORFLENUTDNIW00002301145742
1REVOCMOTTOB00001101142652

8)B(TEKCARBBCP-U00000501

242=LTLOB04004203510582

1NAF14275182501903
223=LTLOB04002303510513
2NMULOCKNISTAEH170002011395
2TEKCARBNAF00000301133533
1KCARBTFELLENUTDNIW00000301143543
1KNISTAEHNIAM17000101141553
1LENAPPOTLENUT

2)A(TEKCARBBCP-U00000801133573
2TEKCARBKNISTAEH00000401333583
1HCTIWSREWOP00005201202
1RAERLENUTDNIW00000401145704
1REVOCKCAB00001201143614
1TENLENUTDNIW00000201149524
1XOBRENUT1000300000
4TOOF00000401149744
88=HNMULOCBCP00000301149754
4DAPTOOF00000601149764
1TEKCRABTROPPUS00000411143574
1LENAPEDISTHGIR00000201144684
1BCPESUF0000070146001P
1BCPYALPSID2000010146002P
1BCPSENOHPDAEH20000711460
1BCPEMULOV2000091146004P
1BCP3VA0000081146005P
1BCPNIAM2000000146006P
11BCPPMA-P1000063146007P

YTQNOITPIRCSEDON.TRAPON

Exploded Diagram Parts List

10

Cambridge Azur 640R AV Receiver

OEDIVROFBCPDLEIHS10000621460021P

0000631460051P

S1 5011 3008 0030 COUNTERSINK SCREW BTB 3.0X8 10
S2
S3 5012 3008 0060 COUNTERSINK SCREW BM3.0X8 14

S5

S7 5012 3004 0060 COUNTERSINK SCREW BM3.0X4 2

S9 5013 3010 0010 PA3.0X10

S10

5011 3006 0010

5011 3006 0010

5011 3014 0010

ERCS

SCREW BTB 3.0X6

SCREW BTB 3.0X14

12BCPPMA-P1000163146008P
1BCPREKAEPS0000032146009P
1BCPSUB-A20000041460001P
1BCPOEDIV20000811460011P
1BCP
1BCPETADPUC232SR00000341460031P
1BCPLACITPO10000731460041P
1BCPLAIXAOC2
1BCPIMDH10001641460061P
1BCPEDOCED20000821460071P
1BCPTCENNOC20000231460081P

618X0.3BTBW

3161X6.2BPWERCS1100616231054S

36

616X0.3MBWERCS0100600321056S

28X6.2AP0100606231058S

53

8

Exploded Diagram Parts List

11

Cambridge Azur 640R AV Receiver

OVER HEAT

Trans Protect SENSOR

TO DISPLAY BRD

TO fuse BRD

RELAY ON/OFF

Over Heat SENSOR

CN5

1

+5V

2

F1

F2

3

-27V

4

GND

5

5P(2.0)

MCU+5V

CN21

+14V

GND

3P(2.0)

MUTE

PROTECT

IC2B
LM393M

IC2A
LM393M

+14V

3

+14V

2

PON/OFF

1

HEAT SINK SENSOR

R2
2K

5

8

7

6

R3

18K

2

1

4

3

R7

6.8K
12K

HEAT SINK SENSOR

CN22

2

1

2P(2.5)

Transformer SENSOR

D28

1N4148

OVER LOAD PROTECT

Q17

R104

10K

C2458

R101

6.2K

R4
220

R6

1.8K

R8

RT1

02DSB282J

1

2

over load

R5
220

R230

43K

R233
39K

R9

1.2K

Connected to bottom of cabinet

R245

22K

MCU+5V

Trans Protect SENSOR

Over Heat SENSOR

Q1

C1815

R231
1K

C102
47U/16

C109

2200U/10

R247

22K

Q87

C2458

1

2

2P(2.5)

Q85

2SC1627A-Y

R131

22K

R164
220K

1

2

3

4

5

6

6

5

4

3

2

1

6P(3.96)

TO VIDEO BRD

2

1

2P(2.5)

D25
1N4001

C3
22U/25

CN1

6P(2.5)

CN4

CN9

7P2.5

1

2

3

4

5

TO DEODER BRD

6

7

6

5

4

3

2

1

5P2.5

1

2

3

4

5

1

2

R27

470

1

2

3

4

5

6

3

2

1

TO SOCKET AC1 OUT

Q11

A1015

Rto-FUSE

125 C 2A250VAC

RELAY-STOP

1

TO FUSE BRD

2

EI28

~14V

200mA

R244

4.7K

R20
1K

INDICATES SAFETY CRITICAL COMPONENTS.
TO REDUCE THE RISK OF ELECTRIC SHOCK LEAKAGE
CURRENT OR RESISTANCE MEASUREMENTS SHALL BE
CARRIED OUT(EXPOSED PARTS ARE ACCEPTABLY
INSULATED FROM THE SUPPLY CIRCUIT) BEFORE
THE APPLIANCE RETURNED TO THE CUSTOMER.

R234

FAN+12VIN

4.7/1W

CN3

1

M

2

FAN

RELAY+15V

FAN+12VIN

R42

10/1W

C96
470U/25

C101
470U/25

D40

1N4001

D39
1N4001

TEMP SENSOR

BL1

C99

15000UF/71V

C100
15000UF/71V

R241

680/0.25W

DW42
1N4570(27V)

AC1

C146

100U/25

Q86

C2878

RCE1 OFF MUTE

MB252

+

-

100U/35

D24

1N4001

C2

AC2

+

AC2

-

R243

4.7K

R26
1K

D6

1N4148

Q38
A1015

3

D7

1N4148

R254
33K

KA7805

O

+55V

C97

0.1UF/100V

C42

104

IC1

I

G

2

C105

C98

0.1UF/100V

-55V

R239
100

DW41
6C2

1

C106

104

2200U/25

-12V

R253

-55V

100K

C120

47UF/25V

R248
220K

SYS-MUTE

R240
100

C103
10U/50

R10

12K/2W

R11

12K/2W

C104

47U/35

R58
22K

BL2

DB101G

RF 1/0.25W

FH1

T20AL250V

FH2

T20AL250V

AC1

R19

D44
1N4001

C108

2.2U/25

R235

RF/0.22/1W

R242

RF/0.22/0.5W

To enhance viewing, please print to A3 12

Mains Transformer & Main Board P.S.U. Circuit Diagram

Cambridge Azur 640R AV Receiver

REC1 OUT

REC2 IN

TAPE IN

AUX IN

ROUT

LOUT

RIN

LIN

RIN

LIN

RIN

LIN

JK4B
AV6-8.4-13/EC

4

A

3

C121

G2

JK4A

AV6-8.4-13/EC

2

1

C134

G1

330P

JK6B

AV4-8.4-13/EC

RA

G2

LA

C135
330P

JK6A
AV4-8.4-13/EC

R

G1

L

G

C125
104

RB-IN

C-IN

RS-IN

LB-IN

LS-IN

L-IN

R-IN

MCU+5V

OVER HEAT

HP/DET

104

C142

330P

C5

10U/16

10U/16

C136

330P

C12

10U/16

C137
330P

C13

C130

330P

MCU+5V

C131

R28
47K

330P

C6

10U/16

R36

R43

47K

47K

C14

10U/16

R41

R44

47K

47K

C18

10U/16

R49

C143

47K

330P

10U/16

C178

10U/16

C177

C176

10U/16

C175 10U/16

C174

10U/16

10U/16

C173

C172

10U/16

D26

1N4148

C4

1000U/10V

Q5

C2878

R29
47K

C2878

R54

R53

470

470

R50
47K

R61

22K

R62

Q18

22K

R59
22K

Q19

A1015

R56
22K

R60

2
4
6
8

10

14

18

22

26

30

34

38
40
42

22K

R57
330K

CN18

2

1

4

3

6

5

8

7

10

9
121211
131314
161615
171718
202019
212122
242423
252526
282827
292930
323231
333334
363635
373738
393940
41

2*21P2.0(180)

1
3
5
7
9
11

15

19

23

27

31

35

41

R55
220K

REC1/ROUT
REC1/LOUT

REC2/RIN
REC2/LIN

TAPE/RIN
TAPE/LIN

AUX/RIN
AUX/LIN

RB /IN
C/IN

SR /IN
LB /IN

SL /IN
FL /IN

GND

FR /IN

Q20

C2458

TO DECODER BOARD

2
4
6
8

10

2*6P2.0(180)

CN25

2
4
6
8
10
121211

1

1

3

3

5

5

7

7

9

9

11

DGND

MCU+5V

OVER HEAT

HP/DET

-12V

REC1/LIN
REC1/RIN

VIDEO2/LIN
VIDEO2/RIN

VIDEO1/LIN
VIDEO1/RIN

VIDEO3/RIN
VIDEO3/LIN

AGND

DGND
STEREO MODE
PON/OFF
SYS-MUTE
MUTE
RLAY CON

PROTECT

REC1 MUTE

G3

C122

10U/16

C132

C138

330P

C9

10U/16

10U/16

C139

330P

C21

C22

104

5

B

6

C133

JK4C

AV6-8.4-13/EC

330P

C123

104

G

L

G1

R

JK5A
AV4-8.4-13/EC

C141
330P

JK5B

AV4-8.4-13/EC

LA

G2

RA

C140
330P

CN19

6

5

4

3

2

1

2*3P2.0(180)

STEREO MODE

PON/OFF

SYS-MUTE

MUTE

RLAY CON

PROTECT

LIN

RIN

LIN

RIN

LIN

RIN

RIN

GND

LIN

REC1 IN

VIDEO2 IN

VIDEO1 IN

VIDEO3 IN

C7

10U/16

R31

R30

47K

47K

R45
47K

R47
47K

R46
47K

C20

10U/16

330P

C8

10U/16

R48
47K

To enhance viewing, please print to A3 13

Mainboard (Inputs) Circuit Diagram

Cambridge Azur 640R AV Receiver

AGND

OVER VOLTAGE

MUTE

OVER LOAD

+B OUT

Feed back

-B OUT

Feed back

RS

FR

RB

+E

B

C

E

-E

+B OUT

-B OUT

+VCC

Feed back

+B OUT

Feed back

C

CN26

8P2.0(180)

-VSS

+12V

+B OUT

-B OUT

-B OUT

CN31

10P2.0(180)

8

7

6

5

4

3

2

1

+E

B

C

E

-E

+E

-E

+E

B

C

E

-E

B

C

E

1

2

3

4

5

6

7

8

9

10

CN33

11P2.0(180)

CN27

8

7

6

5

4

3

2

1

8P2.0(180)

CN30

8

7

6

5

4

3

2

1

8P2.0(180)

C-IN

RS-IN

RB-IN

SYS-MUTE

RB channel

Q69

D946BR

FR channel

11

10

9

8

7

Q26

6

D946BR

5

4

3

+55V

2

-55V

1

S+12V

RS channel

Q27

D946BR

C channel

Q57

D946BR

Q2

C2878

D2

+B OUT

Feed back

-B OUT

+VCC

1N4148

R40

2.2K
D1

1N4148

R32

47K

R33
47K

CN34

11

10

+E

9

8

B

7

C

6

E

5

4

-E
3

2

-VSS
1

+12V

11P2.0(180)

+B OUT

+E

Feed back

B

C

E

-B OUT

-E

+B OUT

+E

Feed back

B

C

E

-B OUT

-E

470UF/10V

C171

R35

A970

10K

C16

473

D31
1N4148

C179

220UF/16V

LB channel

Q43

D946BR

+55V

-55V

S+12V

FL channel

CN28

8

7

6

5

4

3

2

1

8P2.0(180)

LS channel

CN29

8

7

6

5

4

3

2

1

8P2.0(180)

1N4148

Q14

D45

R37

10K

R38
100K

R198

8.2K

Q6

D946BR

Q78

D946BR

TO PAMP1 BOARD

R229

+55VS+12V

2.4K/3W

DW15

C95

100U/16

1N4742A

Speaker Protect

D3
1N4148

Q15

C2458

+14V

D8

IN4001

Q16

C2235

R39

470UF/10V

100K

1N4148

DW4
6A3

1N4148

C1

D4

1N4148

+55V

R125

4.7/0.5W
C54

Q45

150P

2SC4793A-Y

D14

DW5
6A3

D13

1N4148

DW9

6A3

DW11

D18

1N4148

1N4148

DW10

6A3

1N4148

D19

6A3

DW14

2SC5200

R129

R127

270/0.5W

Q44

2SA1943

2SA1837A-Y

C56

R128

150P

4.7/0.5W

-55V

R21

4.7/0.5W
C10

Q8

150P

2SC4793A-Y

R22

270/0.5W

Q7

2SA1837A-Y

C11

R23

150P

4.7/0.5W

R219

4.7/0.5W

C92

Q80

150P

D20

R220

270/0.5W

6A3

Q79

D23

2SA1837A-Y

C93

R221

150P

4.7/0.5W

K2C

K3C

J

J

JZC-42F

JZC-42F

R16

STEREO MODE

2.2K

D5

1N4148

+55V

Q48

0.22/5WX2

L3

LB

0.5UH

R130

10/0.25W

Q49

-55V

+55V

Q10

2SC5200

R24

0.22/5WX2
L1

FL

0.5UH

R25

10/0.25W

Q9
2SA1943

-55V

+55V

2SC4793A-Y

Q82

2SC5200

R222

0.22/5WX2
L7

SL

0.5UH

R223

10/0.25W

Q81

2SA1943

-55V

JZC-42F

K1B

JZC-42F

JZC-42F

R14
100K

K3B

K2A

C17
104

IN4001

D9

LB-OUT

FL-OUT

PH-L

LS-OUT

RELAY+15V

J

K4C

JZC-42F

K1C

J

JZC-42F

Q4
C2235

R1

1.5K

TO PAMP2 BOARD

R-IN

R63

22K

+55V

R192

4.7/0.5W
C117
150P

Q71

2SC4793A-Y

150P

R78

4.7/0.5W
C34
150P

150P

R79

4.7/0.5W
C35
150P

150P

R157

4.7/0.5W
C69
150P

150P

2SC5200

R195

R194

270/0.5W

Q70

2SA1837A-Y

2SA1943

C118

R193

4.7/0.5W

Q29

2SC4793A-Y

2SC5200

R80

270/0.5W

Q28

2SA1837A-Y

C36

R82

4.7/0.5W

Q30

2SC4793A-Y

2SC5200

R81

270/0.5W

Q58

2SA1837A-Y

C70

R159

4.7/0.5W

Q60

2SC4793A-Y

2SC5200

R158

270/0.5W

Q59

2SA1837A-Y

C71

R160

4.7/0.5W

DW1

DW2

DW6

DW12

6A3

6A3

6A3

6A3

1N4148

1N4148

1N4148

1N4148

1N4148

1N4148

1N4148

1N4148

DW3

D10

DW7

D15

DW8

D16

DW13

D21

D11

6A3

D12

6A3

D17

6A3

D22

6A3

Q84

RB

Q72

-55V

Q33

10/0.25W

Q31

2SA1943

Q32

Q61

2SA1943

Q63

Q62

2SA1943

+55V

R83

0.22/5WX2

FR

R85

-55V

+55V

R84

0.22/5WX2

SR

-55V

+55V

R161

0.22/5WX2

CPOWER

-55V

+55V

0.22/5WX2
K4B

L6

0.5UH
JZC-42F

R196

10/0.25W

-55V

K1A

L2

0.5UH
JZC-42F

K3A

L4

0.5UH
JZC-42F

R163

10/0.25W

K4A

L5

0.5UH
JZC-42F

R162

10/0.25W

C-OUT

FR-OUT

PH-R

RS-OUT

RB-OUT

STEREO MODE

-12V

R12

JUMP

CN32

1

AGND

2

3

FL
LS

LS-IN

4

OVER VOLTAGE

OVER LOAD

R15

220K

R65
22K

LB

MUTE

A1015

Q21

5

6

7

8

8P2.0(180)

L-IN

SYS-MUTE

R64

22K

MCU+5V

LB-IN

R13

1.5K

TO EarPHONE BOARD

CN17

R17 1.2K/1W

4

PH-R

R18 1.2K/1W

3

PH-L

2

GND

1

PH-DET

4P(2.0)

RB-OUT RB

LB-OUT

RS-OUT

LS-OUT

C-OUT

FR-OUT

FL-OUT

POWER OUT

CN6

1

2

3

4

5

6

7

7P(2.5)

Q12
C2458

470UF/10V

C15

Q3

C2878

PH-R

PH-L

HP/DET

CN16

7

6

LB

5

RS

4

LS

3

C

2

FR

1

FL

7P(2.5)

TO SPEAKER BRD

C2458

Q13

RLAYCON

RELAY-STOP

over load

R34
10K

To enhance viewing, please print to A3 14

Power Amplifiers Circuit Diagrams

Cambridge Azur 640R AV Receiver

To enhance viewing, please print to A3 15

Main Board PCB Layout

Cambridge Azur 640R AV Receiver

)5

65

6%5

)/

6/

6%/

'LUHFW,1

6:

&

C55
104

)5

65

6%5

)/

6/

6%/

3UHDPS287

6:

&

R

G1

L

G2

S

JK1A

AV6-8.4-13B

R

G3

L

G4

C

JK1B

AV6-8.4-13B

JK3
AV2-8.4-13/ES

G

JK2A

R

G1

L

G2

S

AV6-8.4-13B

JK2B

R

G3

L

G4

C

AV6-8.4-13B

JK4
AV2-8.4-13/ES

C57

G

104

1

G1

2

G2

3

4

G3

5

G4

6

L

G1

R

C56
104

1

G1

2

G2

3

AGND

4

G3

5

G4

6

AGND

L

G1

R

AGND

AGND

AGND

C58
104

R1

220

R2

220

R3

220

R4

220

R5

220

R8

220

R6

220

R7

220

AGND

AGND

R13
47K

R16
47K

R17
47K

E

R21
100K

R24
100K

R25
100K

C4
330P

C1
330P

C5
330P

C9
330P

C13
330P

C12
330P

R14
47K

R18
47K

R22
100K

R27
100K

R26
100K

R19
47K

C2
330P

C6
330P

C10
330P

C14
330P

C15
330P

C7
330P

R15
47K

R20
47K

R23
100K

R28
100K

Q4

c3326

AGND

AGND

R35

10K

R52

15K

C3
330P

C8
330P

C11
330P

C16
330P

AGND

AGND

12

13

C23

105

Q1

c3326

Q5

c3326

R53

15K

C21

105

5

6

R29

22K

IC2A
TL084

3

2

R36

22K

IC1D
TL084

14

-V

R37

11

10K

R49

Q2

c3326

15K

R54

Q7

c3326

15K

R62

470

R63

1K

Q6
c3326

R30

10K

C40
10U/25

4

+V

4

+V

R38

10K

10U/25

IC1B
TL084

C34

10U/25

R50

15K

R55

15K

V+

10U/25

C4910U/25

C50

C35

7

1

Q3

c3326

Q8

c3326

12

13

5

6

R40

22K

AGND

10

9

R39

22K

AGND

R51

15K

R56

15K

VOL SW OUT

6CH-C OUT

IC2D

TL084

IC2B
TL084

-V

11

IC1C
TL084

4

IC1A
TL084

+V

R34

10K

IC2C
TL084

-V

11

AGND

C4410U/25

C4510U/25

C4610U/25

C4710U/25

C4810U/25

C5110U/25

C24

105

R44

10K

R65
270K

1

8

C42
10U/25

C43
10U/25

C38

C39

10U/25

AGND

R45

150
R46

150

R47

150
R48

150

R66
270K

10U/25

C41

10U/25

V-

3

2

AGND

10

9

AGND

R33
22K

R43
22K

C36

10U/25

14

R31

R32

10K

22K

AGND

C22

4

+V

R41

10K

-V

11

105

AGND

R42

10K

R57

47

R58

1K

R59

1K

R60

47

R61

1K

R64

1K

C37
10U/25

7

8

6CH SW IN

6CH C IN

A+15V

A-15V

6CH-BR OUT

6CH-SL OUT

6CH-BL OUT

6CH FR IN
6CH RS IN

6CH RB IN

6CH FL IN
6CH LS IN

6CH LB IN

BUF FR OUT

6CH-SR OUT

MUTE B

MUTE A

BUF FL OUT

To enhance viewing, please print to A3 16

Video Board Direct Input / Pre-outs Circuit Diagram

D100-SSA-13

TO DECODE BOARD

AV3-8.4-14/EC

VIDEO1 COAX IN

VIDEO2 COAX IN

REC1 COAX IN

C317

105

JK9

CD COAX IN

AV4-8.4-14/EC

10

C284
105

DGND1

REC1 COAX OUT

DVD COAX IN

REC2 COAX OUT

CN9

Cambridge Azur 640R AV Receiver

1

D+5V

2

REC1-A

3

REC1-B

4

REC1-C

5

OPT-ON/OFF

6

OPT-IN

7

8

9

10

11

12

13

JK8

G4

G5

10

9

9

C283
105

REC2-A

REC2-B

REC2-C

DGND1

C300

104

R300
75

C318

DGND1

105

3

G3

2

G2

1

G1

C319

C320
105

C226
105

C168
105

C321
105

105

DGND1

1
5

2
6

3
7

4
8

C282
105

DGND1

C301

104

R301
75

DGND1

C302

104

R302
75

DGND1

C303

104

R303
75

DGND1

C304

104

DGND1

R304
75

C33
105

R308

10

R309

10

R312

10

R313

10

R314

10

R319
10M

DGND1

R320

10M

DGND1

DGND1

DGND1

DGND1

1 2

3 4

5

C308

R321
10M

R322
10M

R323
10M

C309

1 2

3 4

5 6

8P

8P

C311

8P

C312

8P

C310

8P

DGND1

IC37A

14

74HCU04D

IC37B
74HCU04D

R325

10K

IC37C
74HCU04D

R326

10K

14

R233

10K

R232

10K

R230

10K

R229
330

C313

104

6

IC38A
74HCU04D

IC38B
74HCU04D

IC38C
74HCU04D

R144

91

DGND1

13

11

9 8

C314
104

DGND1

13 12

IC38F
74HCU04D

11

R145
330

DGND1

C295

100/10

IC37F
74HCU04D

DGND1

IC37E
74HCU04D

IC37D
74HCU04D

C296
100/10

DGND1

IC38E

74HCU04D

9

IC38D

74HCU04D

C305

104

R143

91

L32

FB

12

7

10

8

14

104

L34

L35
FB

DGND1

FB

C297

100/10

C298
100/10

1

74HCU04D

R310

10

R311

10

DGND1

R315

10

R316

10

R317

10

IC39A

74HCU04D

IC39B

C315

104

C316
104

15

16

VCC

TC74HC151AP

IC41

D31D22D13D04Y5W6ST7GND

R149

R147

10

10

34

11

D712D613D514D4

R305

75

R185

10

16

R154

VCC

10

D31D22D13D04Y5W6ST7GND

C9B10A

8

DGND1

R186

10

15

TC74HC151AP

10

L33

FB

7

2

C306

IC39E

1110

74HCU04D

CN3

+5V

1

2

CD OPT IN

DGND1

1312

7

DGND1

R142
75

DGND1

74HCU04D

REC2-A

REC2-B

REC2-C

3

4

5

6

7

8

9

10

11

3

2

1

IC39F

TO OPT BOARD

11P(2.0)

CN4

3P(2.0)

TO AV3 BOARD

REC1 OPT OUT

REC2 OPT OUT

VIDEO1 OPT IN

VIDEO2 OPT IN

REC1 OPT IN

DVD OPT IN

IC39C

74HCU04D

5 6

11

C9B10A

D712D613D514D4

IC40

IC39D

74HCU04D

DGND1

8

9 8

To enhance viewing, please print to A3 17

Video Board Coaxial Input / Outputs Circuit Diagram

Cambridge Azur 640R AV Receiver

!

CN8

1

1

2

2

3

3

4

4

5

5

5P2.5

Video & S-Video Selector CON

CH

CON Pin

Selector CON-A

Selector CON-B

Selector CON-C

Y U V Selector CON

CH

CON Pin

Selector YUV-A

Selector YUV-B

S-VIDEO OUT Selector CON

CH

CON Pin

S -Video CON-B

S -Video CON-B

JK6A

1

Y

R

G1

G1

2

L

Cb/Pb (U)

Cr/Pr (V)

Cb/Pb (U)

Cr/Pr (V)

Cb/Pb (U)

Cr/Pr (V)

AV6-8.4-13B

JK6B

Y

AV6-8.4-13B

JK7A

Y

AV6-8.4-13B

G2

G2

3

S

VGND

4

R

G3

G3

5

L

G4

G4

6

C

VGND

1

R

G1

G1

2

L

G2

G2

3

S

VGND

REC

VIDEO 1

DVD

REC

D13

AC +V

AC

DB104G

AC

D14
DB104G

!

-V

VGND

+V

-V

!

VGND

!

1/0.25W

R248

1/0.25W

R249

!

VGND

!

R252

0.22/0.25W

DVD Video1 Video2 REC1 REC2 Video3

10 0 00 0

10 0 00 0

10 0 00 0

DVD Video 1

10 0

10 0

BYPASS OSD Y/C

100

100

R88

R89

R90

75

75

75

R91

R9375R95

75

75

R92

R94

R96

75

75

75

VGND

VGND

C260
2200/16

C261

2200/16

C263

2200/25

C174

105

C184

105

4
2
5
1

11
15
14
12

9

10

4
2
5
1

11
15
14
12

9

10

1

C141
104

C142
104

2

1

C146
104

E

E

Selector YUV-A

Selector YUV-B

IC32

COM-Y

Y3
Y2
Y1

COM-X

Y0

X3
X2
X1
X0

B
A
INH6VEE

TC74HC4052AF

IC33

COM-Y

Y3
Y2
Y1

COM-X

Y0

X3
X2
X1
X0

B
A
INH6VEE

TC74HC4052AF

IC29
KA7805

VOUT

VIN

GND

2

D15

1N4001

1

VIN

VOUT

GND

IC30
KA7905

IC31
KA7809

VOUT

VIN

GND

2

VGND

TERMINAL ERTH

3

13

16

VDD

8

VSS

7

3

13

16

VDD

8

VSS

7

*

C209

100/10

Q30

A1331

R123

27K

R269

R329

10K

270K

DGND

Q32 A1331

*

R124

27K

R270

R330

10K

270K

DGND

*

Q39

R276

A1331

27K

R271

10K

R273

Q44

C3361

10K

R279
270K

DGND

Q40

A1331

R277

27K

R275

10K

R274

Q43

C3361

10K

R331
270K

DGND

IC34

1

Vin1

C156

2

VEE1

104

3

Vin2

C157

4

VEE2

104

5

Vin3

C158

6

VEE3

104

7

PowerSave

L12

FB

R125
10K

Q41

C3361

R126
10K

Q42

C3361

6dB DR

6dB DR

6dB

NJM2581M

MUTE B

MUTE A

REC2 MUTE

R278
270K

A-15V

Zone 2 MUTE

R280
270K

A-15V

C161

14

V+1

104

13

VOUT1

C159

12

V+2

104

11

VOUT2

C160

10

V+3

104

9

DR

VOUT3

8

GND

C210

100U/10

VGND

6CH-C OUT

6CH-SL OUT

6CH-SR OUT

V-

6CH-BL OUT

V-

V+

6CH-BR OUT

75

R99

R97

75

R98

75

C234

47P

AGND

IC3C
TL084

8

-V

11

V+

C145
104

4

IC3A
TL084

AGND

1

+V

IC3D
TL084

14

-V

11

C148
104

IC4A
2068

+

1

V-

-

4

C150 104

C151 104

8

+

7

V+

-

IC4B
2068

C235

C238

R129

R128

47P

47P

10K

10K

R237

10

9

3

2

12

13

3

2

5

6

IC3B
TL084

7

VOLC OUT

470

R238

VOLS L OUT

470

R239

VOLS R OUT

470

R240

VOLLB OUT

470

AGND

AGND

R242

VOLRB OUT

470

4

5

+V

AGND

6

YUV OUT CON

C-Y OUT

C-Pb OUT

C-Pr OUT

YUV OFF

JK7B

6

C

Cr/Pr (V)

G4

G4

5

Cb/Pb (U)

L

G3

G3

4

R

Y

AV6-8.4-13B

R130

10K

VGND

VGND

D+5V

D7

C262

1N4148

2200/6.3

AGND

D19

MUTE B

1N4148

D20

1N4148

D17

1N4148

MUTE A

D18

1N4148

R268

Q31

C3361

R159

10

VGND

47/10

47/10

47/10

D16

1N4148

D21

1N4148

Zone 2 MUT

R253

4.7K

10K

R272

10K

D22

1N4148

D23

1N4148

R254

R255

4.7K

4.7K

VGND

VGND

L11

FB

R127

10K

C155

C256

C257

C241

C187

473

105

C188

C242

473

105

R158

10

C207

100/10

100/10

R153

10

R155

10

R156

10

R157

10

C208

C250
10/25

V+5V

C143
104

C144
104

C147
104

VGND

R281

47K

47/16

12

13

11

10

C273

2

1

5

3

9

6

V+5V

V-5V

V+9VAC

R267

4.7K

VGND

IC24

Y0

Y1

Z0

Z1

X0

X1

A

B

C

INH

TC74HC4053AF

D10

1N4148

R226

*

4.7K

C264

1U/50

*

Q38

C3361

15

YCOM

4

ZCOM

14

XCOM

16

VDD

8

VSS

7

VEE

3

3

3

C149

104

VGND

C152

104

C153

104

VGND

C154

104

To enhance viewing, please print to A3 18

Video Board (YUV) Circuit Diagram

REC1 IN

VIDEO1 IN

N
I

2
O

S-VIDEO

VIDE

N

S-VIDEO

REC2 I

n

S-VIDEO_Y

eo 3 i
d

S-VIDEO_C

Vi

VIDEO

S-VIDEO

VIDEO

VIDEO

S-VIDEO

S-VIDEO

VIDEO

VIDEO

VIDEO

GND

GND

GND

P3
MDW-111/Y

G4

G5

VGND

P2
MDW-111/Y

G5

G4VG2

VGND

P4
MDW-111/Y

G5

G4

VGND

P5
MDW-111/Y

G5

G4

VGND

1

2

3

4

5

6

CN6
6P2.0

ZoneCON A
ZoneCON B
ZoneCON C

ZoneVideo A
ZoneVideo B
ZoneVideo C
REC 1 CON

Cambridge Azur 640R AV Receiver

Video & S-Video Selector CON

CH

DVD Video1 Video 2 REC 1 REC 2 Video 3

10 0 011

11 1 010

11 0 001

IC36

R192

10

D8
1N4148

R207

360

C277

10/25

LA7108M

6dB DR

Q14

A1331

C171

105

C172

105

C274

104

VGND

+VCC

VOUT1

DR6dB

GND

VOUT2

MUTE2

VOUT3

DR6dB

MUTE3

-VCC2

R188
270K

R206
360

V-5V

C275

104

1

VGND

3

Yin

5

Cin

7

PS

4

Vref

C280

6

47/10

L7

16

FB

15

C206

100U/10

14

C120

104

VGND

13

12

11

10

9

C163

C181

47U/10

105

VGND

V+5V

V-5V

Selector CON -C

Selector CON -B

Selector CON -A

L21
FB

C276

C281

104

47/10

12

VGND

1

2

+

+

14

V

V

Yout

13

Ysag

V
67

5

C278

11

5

CV out

M2

3

J

IC

N

10/25

10

CVsag

8

Cout

GND1

GND2

9

V+5V

CN2

CN1

1

1

1

1

2

2

2

2

3

3

3

4

4

4

5

5

5

5P2.0

5P2.0

C127
104

VGND

L22

V-5V

FB

C61
104

8

IC5B

VGND

5

TK15420MTL-G

+

V+

6

R176

-

22K

R167

VGND

2K

R166
2K

VGND

IC5A

TK15420MTL-G

3

+

­V

2

-

R177
22K

VGND

L8

C81

FB

C62
104

47/10

VGND

R178
22K

VGND

R250

1K

R251
1K

VGND

R179
22K

VGND

R171

4

2K

R168
2K

C63
104

VGND

VGND

8

IC6B

5

TK15420MTL-G

+

+
V

6

-

R170

2K

R169
2K

VGND

IC6A
TK15420MTL-G

3

+

V-

2

-

R173
2K

4

R172

C82

2K

VGND

47/10

L9
FB

V-5V

R24375

3

75

R244

4

R24575

5

VGND2

7

1

R85

C132

75

104

7

1

VGND

C64
104

S-VIDEO OUT Selec tor CON

CON Pin

S-VideoCON-B

S-VideoCON-B

C231

C230

C236

47P

47P

47P

R8675

R8775

C233

C237

C232

47P

47P

47P

Q28
C3326

AGND

Video OUT2

STATUS

IR to MICRO

CH

BYPASS OSD Y/C

100

100

10K

R225
15K

A-BUS IR in

YTOYC-YUV

C TO YC-YUV

P6
MDW-111/Y

V

VIDEO

Y

C

G1

4

5

11

R11

R

K

K
10

10

R119

R120

10K

Q35
C3326

R264
15K

AGND

VGND

S-VIDEO

6

G3

11
R

K

C270

10

104

P7
MDW-111/Y

V

Y

C

G1
1

G3
R12

10K

C268

104

R1401K

R1801K

DGND

D+5V

K

G2

G5

VGND2

K

G2

G5

VGND

Zone 2 LOUT

Zone 2 ROUT

Zone 2 MUTE

CN7

11P(2.0)

MON OUT

G4

UT

VIDEO

C1O

S-VIDEO

E
R

G4

K

11

10

9

8

7

6

5

4

3

2

1

72=RQHVF

YCOM

ZCOM

XCOM

CON Pin

Selector CON-A

Selector CON-B

Selector CON-C

R141

22K

1

VIN1+

2

NFB1

3

MUTE1

4

VIN2+

5

NFB2

R227
22K

7

VIN3+

8

NFB3

R224
22K

6

-VCC

VGND

R199

100K

D4

R191

470

1N4148

R198

C170

30K

105

VGND

15

4

14

16

VDD

8

VSS

VGND

7

VEE

VIDEO-SELECT

Q5
Q7
Q6
Q4

Q3
Q0
Q1

4051AF

Q2

C

A

C74H
T

B
C

IC16

Y-SELECT

Q5
Q7
Q6
Q4

Q3

F

Q0
Q1

4051A

Q2

A

TC74HC

B
C

IC17

C-SELECT

Q5
Q7
Q6
Q4

Q3

F

Q0
Q1

4051A

Q2

A

TC74HC

B
C

IC18

3

COM

16

VDD

C118
104

8

VSS

6

INH

VGND

7

VEE

C119

104

3

COM

16

VDD

C123
104

8

VSS

6

INH

VGND

7

VEE

C124

104

3

COM

16

VDD

C125
104

8

VSS

6

INH

C131
104

7

VEE

V

Y

C
G1
G3

C267

K

G2

104

Y

C
G1
G3

C216

K

104

V

Y

C
G1
G3

C266

K

G2

104

V

Y

C
G1
G3

C269

K

G2

104

1

2

3

4

5

6

VGND

R7975R8175R117

R74

R7675R113

75

R7375R7575R112

R80

R82

75

75

R201

R203
R204 2 2K

C129
104

R83

10K

75

C122

104

R77
75

10K

C121104

R78
75

10K

C130
104

R118

R84

10K

75

R28275R28375R284

22K

22K

IC19

5

COM

Q5

4

Q7

2

Q6

1

Q4

VDD

12

Q3

13

Q0

14

Q1

15

VSS

Q2

11

INH

A

10

B

75

9

VEE

C

TC74HC4051AF

VGND

IC22

5

COM

Q5

4

Q7

2

Q6

1

Q4

VDD

12

Q3

13

Q0

14

Q1

15

VSS

Q2

11

INH

A

10

B

9

VEE

C

TC74HC4051AF

VGND

5
4
2
1

12
13
14
15

11
10

9

VGND

5
4
2
1

12
13
14
15

11
10

9

VGND

5
4
2
1

12
13
14
15

11
10

9

VGND

3

16

C26
105

8

6

VGND

C27
105

7

C279

3

105

16

C30
105

8

6

VGND

C31
105

7

V+5V

V-5V

C229

C110

104

475

BY PASS /OSD SELECT

OSDCV INP UT

IC15

12

2

5

13

1

3

7

8

VGND

BY PASS /OSD SELECT -2

R219

2.2

VGND

IN-CINPUT

R146

10

C228
475

VGND

R148 10

VGND

IN-YINPUT

OSDCV INP UT

IN-CINPUT

IN-YINPUT

OSDC OUT

OSDY OUT

CV OUT

0X

0Y

0Z

1X

1Y

1Z

VEE

TC4053FN

C173
105

5
4
2
1

12
13
14
15

11
10

9

X-COM

Y-COM

Z-COM

Q5
Q7
Q6
Q4

Q3
Q0
Q1
Q2

A
B
C

V+5V

C126
104

VGND

16

VDD

C169

14

10/25

15

4

C227

11

A

10

10/25

B

9

C

INH6VSS

0
2

IC

VGND

C205

100U/10

VGND

D1

1N4148
D2

Q13
C3361

1N4148
D3

1N4148

3

COM

16

VDD

C28
105

8

VSS

TC74HC4051AF

VGND

6

C29

INH

105

7

VEE

2

Y0

1

Y1

5

Z0

3

Z1

12

X0

13

X1

11

A

10

B

9

C

6

INH

IC21
TC74HC4053AF

To enhance viewing, please print to A3 19

Video Board (Composite & S-Video) Circuit Diagram