Cambridge Audio Azur 540R V3 User manual

Gallery Court Hankey Place London SE1 4BB UK
Tel: [phone] Fax: [phone]
540R v3
Issue Date: October 2007
________________________________________________________________________
SERVICE MANUAL
_______________________________________________________________________
SPECIFICATIONS:
Power Output 100 watts rms per channel,
8 ohms, two channels driven
80 watts rms per channel,
8 ohms, all six channels driven
THD <0.005% @ 1kHz
<0.04% @ 20Hz - 20 kHz
Crosstalk <-60dB
Frequency Response 20Hz – 20 kHz +/- 1dB
Audio Input Sensitivity 150mV
Audio Input Impedance 47k0hms
Digital Input Impedance 75ohms (Coaxial/SPDIF)
S/N Ratio >96dB ‘A’ weighted
Tone Control Range Bass +/- 10dB
Treble+/-10dB
FM Tuner 87.5 – 108MHz,
75 ohm coaxial aerial
AM Tuner 522 – 1629kHz
300 ohm loop aerial
Video Levels / Impedance Composite (CVBS) =
1Vp-p / 75ohm
S-Video(S-VHS)=
Y 1Vp-p / 75ohm
C 0.286 Vp-p / 75ohm
Component=
Y1Vp-p/75ohm
Cb/Cr 0.75Vp-p / 75ohm
Pb/Pr 0.75Vp-p / 75ohm
Cont.../
AP229961

Gallery Court Hankey Place London SE1 4BB UK
Tel: [phone] Fax: [phone]
SPECIFICATIONS Cont.
HDMI Transfer of all resolutions up to and including
1080p @50/60Hz (1920 x 1080) supported,
with HDCP handshaking
Architecture CS42518 CODEC
CS493263 DSP
Audio Inputs 6 Line Level + Tuner
6.1DirectInput
Audio Ouputs 6 Amplified Speaker Outputs
6.1Preampoutput
1 Tape record output
Video Inputs 3 Composite , 2 S-Video
2ComponentVideo
Video Outputs 1 Composite, 1 S-Video
1ComponentVideo
Digital Inputs 4 Co-Axial, 4 Optical
Digital Outputs 1 Co-Axial, 1Optical
Stby Power Consumption <10w
Max Power Consumption 615w
Dimensions – H x W x D 150 x 350 x 430mm
Weight 9.6Kg (21.1 lbs)
AP229961

CAMBRIDGE AUDIO 540R V3
TABLE OF CONTENTS
540R V3 Service Manual Specifications 1 - 2
TableofContents 3
Troubleshooting 4
RearPanelDetails 5
Front Panel Details 6
RemoteControl 7
Connections Diagram 8
Exploded Diagram 9
Exploded Diagram Parts List 10 - 11
AvailableServicePartsList 12
Fuse Circuit Board & Headphone Circuit Board Detail 13
Fuse Circuit Board & Headphone Circuit Board 14
Mains Transformer & Power Supplies (Main Circuit Board) 15
Main Circuit Board, Output Stage 16
Main Circuit Board, Speaker Circuit Board 17
Display Circuit Board Detail 18
Display Circuit Board 19
Decoder Circuit Board (Power Supplies) 20
Decoder Circuit Board 21 - 24
HDMI Circuit Board 25 - 27
OSDCircuitBoard 28
Connect (B) Circuit Board 29
Connect (T) & OSD Circuit Boards 30
OSD & Connect (T) Circuit Boards 31
COAX Circuit Board 32 - 34
Connect (B) Circuit Board 35 - 36
Input / Output Connections 37
YUVCircuitBoard 38 – 39
Bill of Materials 40 - 48
ICDetails 49 - 51

CAMBRIDGE AUDIO 540R V3
Troubleshooting
A low hum or buzz sound can be heard:
Power cords or lighting placed near this product.
Analogue inputs not connected securely.
Sound is not audible from one channel:
Speaker connections disconnected.
Speaker set to ‘None’ in OSD setup menu.
Sound cuts off when listening to music or there is no sound even though power is ON:
Speaker impedance is less than prescribed for the 540R V3.
The unit is not adequately ventilated and may be overheating.
Low bass or “phasey” response:
Speaker polarity (+/-) of one or more speakers is reversed.
An unusual hissing noise is heard when listening to a radio broadcast in stereo, but not heard when
listening in mono:
A slight noise may be heard because the method used for modulation of FM stereo broadcasts is different than that used for mono broadcasts.
Aerial quality also effects the level of the hiss heard.
Noise is excessive in both stereo and monaural radio broadcasts:
Poor location and / or direction of the antenna.
Transmitting station is too far away.
No sound from the rear speakers:
Source being played is not recorded in surround sound.
Speaker/s set to ‘None’ in OSD setup menu.
A stereo mode has been selected.
No sound from the centre speaker:
Centre speaker has been set to ‘None’ in OSD setup menu.
A stereo mode has been selected.
No sound from the subwoofer:
Sub has been set to ‘OFF’ in the OSD setup menu or via the remote.
DTS Neo:6, DD PLII modes (which have no LFE channel) have been selected with all speakers set to ‘Large’ and Bass Augment off.
Remote Control is not working:
The batteries are flat.
The remote is too far from the receiver or out of the effective range.
No sound from speakers when connected to a digital input:
Audio input type is set to analogue (check display). Press the Audio in Type button to switch to digital.
No sound from speakers when connected to an analogue input:
Audio input type is set to digital. Press the Audio in Type button to switch to analog (check display).
Audio input type can also be set in the Input Setup menu of the OSD.
OSD not visible:
Check that the TV/Monitor is connected to the 540R V3 and is using a Composite or S-Video connection.
For more frequently asked questions (FAQ’s), technical advice and information on getting the most out of your 540R V3,
please visit the Support section on Cambridge Audio’s website:
www.cambridgeaudio.com/support.php
4

CAMBRIDGE AUDIO 540R V3
Rear Panel Connections
1
11
12
13
14
15
16
17
18
19
2
3
4
9
5
6
7
8
Power On/Off
Switches the unit on and off.
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.
Speaker terminals
Connect to loudspeakers with an impedance of between 4-8 ohms. 6.1,
5.1 or less connections can be made.
6.1 Preamp Out
Connect to the 6.1 (or 5.1) channel input terminals of another amplifier
system, separate power amps, subwoofer or active loudspeakers.
6.1 Direct In
Connect to the 6.1 (or 5.1) channel output terminals of a DVD player
with built-in surround sound decoding for playing DVD-A or SACD.
Tape/MD/CDR
Connect the Tape Play sockets to the line output terminals of a Tape
deck, MD player, CD-R etc. Connect the Tape Rec sockets to the line
input terminals of a Tape deck, MD player, CD-R etc.
Audio inputs
Connect to the audio line output terminals of a source device (eg CD,
DVD player etc).
RS232C
For use by an installer/dealer for software updates, or for control of the
540R v3 by Custom Install (C.I.) systems.
Update/Normal
For dealer use only - Switches the 540R v3 between Normal (default)
mode and Software Update mode. Do notchange the mode to Update
or make connections to it in Update mode as damage may result!
IR Emitter In
Allows modulated IR commands from multi-room systems or IR repeater
systems to be received by the 540R v3.
Rear panel connections
FM/AM antenna
All tuner antenna connections are made here. Refer to the ‘Aerial
connections’ section of this manual for more information.
HDMI
Inputs and output to a suitable TV/Monitor. The HDMI inputs can be
assigned in the OSD to the DVD, Video 1, or Video 2 sources (see later
section of this manual for more information).
TV/Mon outputs
S-Video - Connect to your television via S-Video cable to display the
picture of any S-Video connected unit.
Composite - Connect to your television via 75 ohm RCA phono cable to
display the picture of any composite video connected unit.
These outputs are also used to view the 540R v3’s on-screen setup
menu.
Component - Connect to the Cr/Pr, Cb/Pb, & Y terminals of a television
set.
Note: There is no On-Screen Display setup menu present on the
Component Video output.
Video inputs
S-Video - Connect to the S-Video outputs from the source equipment.
Composite - Connect to the Composite Video outputs from the source
equipment.
Component - Connect the Component Video outputs from the source
equipment.
Note: The preferred connection method for video sources is always
HDMI (highest quality) then Component Video then S-Video then
Composite Video. HDMI and DVD Component also support Progressive
Scan which gives better picture quality if supported by both your DVD
player and TV.
Digital Optical Inputs
Connect to the digital optical (Toslink) outputs of source equipment.
Optical Out
Connect to the digital optical (Toslink) input of an external recording
device (eg MD/CDR etc) to record from the selected digital audio source.
Digital Coax Inputs
Connect to the digital coaxial (SPDIF) outputs of source equipment.
Coax Out
Connect to the digital coaxial (SPDIF) input of an external recording
device (eg MD/CDR etc) to record from the selected digital audio source.
Heat tunnel vent grille
Allows cooling of internal circuitry. DO NOT OBSTRUCT!
FM
75Ω
AM
Loop
300Ω
Video 1 Video 2 DVD
Sur
Left
Sur
Right
Sur
Back
Left
Right
Centre
In OutCD/Aux
CD Video 1 Video 2 DVD
CD Video 1 Video 2 DVD
SB
SB
SW SW
CC
RSRSRR
LSLSLL
Power AC
6.1 Direct In
Cr/Pr Cb/Pb Y Cr/Pr Cb/Pb Y Cr/Pr Cb/Pb Y
Component Video In
2nI1nI
Tuner
RS232C
Digital Optical In
Audio In Tape/MD/CDR
L
R
Digital Coax In Coax Out
Optical
Out
TV/Mon Out
Designed in London, England
TV/Mon
Out
Serial No. label fitted
on underside www.cambridge-audio.com
Caution
Risk of electric shock.
Do not open.
Avis
Risque de choc electrique.
Ne pas ouvrir.
Achtung
Vorm öffnen des gerätes.
Netzstecker ziehen.
N1863
azur 540R v3.0 AV Receiver
Max Power Consumption: 615W
Power Rating: 230V AC ~ 50Hz
1.51.66.1 Preamp Out
Power
On
Off
In 2In 1 Out
HDMI
Do not obstruct ventilation. Ne pas obstruer la ventilation. Ventilation nicht verschließen.
Component Video
(Assignable)
(Assignable)
In
IR Emitter
Video In
In 1 (Assignable) In 2
S-VideoComposite
AЯ 46
Update
Normal
Speaker Impedance 4-8 Ohms
Manufactured
in an
ISO9002
approved
facility
This device complies with part 15 of the FCC Rules.
Operation is subject to the following two conditions:
1) This device may not cause harmful interference;
2) This device must accept any interference, including
interference that may cause undesired operation.
1 2 3 4 5
7 8 9
6 4 3
19
10
11
1213141516
18
10
17
5

CAMBRIDGE AUDIO 540R V3
Front Panel Connections
Front panel controls
Volume
Phones Tuning Mode/Store
DVD Video 1
Dolby Digital EX/
DTS ES
DSPPro Logic II/
Neo 6
Input
Mode Video 3 inputs
Video Left Right
Stereo
Modes
Video 2 Video 3 Tuner FM/AM Tape/MD/CDR CD/Aux 6.1 Direct
–+
Standby / On
azur 540R
AV Receiver
1 2 3 4
5 6 7 8 9
10 11 12 13 14 15 16 17
18
19
20
Standby/On
Switches the unit between Standby mode (indicated by dim power LED)
and On (indicated by bright power LED). Standby is a low power mode
where the power consumption is less than 10 Watts. The unit should be
left in Standby mode when not in use.
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.
Note: Plugging in headphones will automatically mute the main and pre-
amp outputs and select a 2-channel stereo down-mix to be created for
headphone use.
Tuning +/-
Used to tune FM/AM frequencies and skip presets in Tuner mode.
Mode/Store
Press to cycle between Tuner modes (refer to the ‘Operating
instructions’ section of this manual for more information).
Note: The 540R v3 remembers the audio and video input type and
processing mode for each individual source input. These are recalled
each time a source is selected.
Stereo Modes
Press to listen to a source in either Stereo or Stereo + Sub modes.
Dolby Digital EX / DTS ES
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).
Pro Logic II / Neo:6
Press to select between various Pro Logic II/Neo:6 effects for matrix
encoded analog or digital material or for post-processing DD/DTS
material.
Note: The 540R v3 is unable to auto-detect this kind of source material
as it does not include embedded encoding type flags so manual
selection is required.
DSP
The 540R v3 can create a surround sound effect even from non-
encoded material by Digital Signal Processing (DSP). Press this button to
choose one of the following surround sound effects: THEATER, HALL,
MOVIE, MUSIC or ROOM.
Input Mode
Press this button to toggle between analog or optical/coaxial digital
input types for the currently selected source. The 540R v3 remembers
the input type selected for each source when you return to that source.
1
2
3
4
5
6
7
8
9
DVD
Press to select the DVD source equipment for output through the 540R
v3.
Video 1
Press to select the source equipment connected to Video 1 for output
through the 540R v3.
Video 2
Press to select the source equipment connected to Video 2 for output
through the 540R v3.
Video 3
Press to select a video camera recorder/video games console
connected to the Video 3 input sockets.
Tuner FM/AM
Press to select the tuner for output through the 540R v3. Once in Tuner
mode also use this button to switch between FM and AM modes.
Tape/MD/CDR
Press to select the recording device connected to the Tape/MD/CDR
input for output through the 540R v3.
CD/Aux
Press to select the CD or other source equipment connected to CD/Aux
on the rear panel for output through the 540R v3.
6.1 Direct
Press to select a 6.1 or 5.1 source (DVD-A or SACD player etc) connected
to the 6.1 Direct In sockets.
Infrared sensor
Receives IR commands from the supplied Azur remote control. A clear
unobstructed line of sight between the remote control and the sensor is
required.
Volume
Use to increase/decrease the level of the sound from the outputs of the
540R v3.
Video 3 input sockets
Allows a video camera recorder/video games console to be connected
and selected by the Video 3 source button.
10
11
12
13
14
15
16
17
18
19
20
6

CAMBRIDGE AUDIO 540R V3
Remote Control Details
Remote control
Tuner AM/FM
Selects Tuner mode. Pressing again to toggle between FM
and AM modes.
6.1 Direct
Selects the 5.1/6.1 Direct input.
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 the FM tuner, 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.
DVD, Video 1, Video 2, Video 3, Tape
MD/CDR, CD Aux
Press the corresponding button to change the input
source.
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.
The 540R v3 is supplied with an Azur Navigator remote
control. Insert the supplied AAA batteries to activate. 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 On and Standby mode.
Audio In Type
Selects between analog or digital audio input for the
current source.
Stereo, PLII/NEO 6, DD EX/DTS ES, DSP Modes
See button details as listed in the ‘Front Panel Controls’
section on the previous page.
DRC (Dynamic Range Control)
Press to rotate through four dynamic range settings when
listening to Dolby Digital/DTS movie soundtracks. Refer to
the ‘Operating instructions’ section of this manual for
more information.
LFE Trim
Press to trim (adjust the level of) the Low Frequency
Effects channel using the Volume up/down buttons.
Sub On/Off
The Sub On/Off button performs temporary muting of the
Subwoofer without affecting the bass management or
speaker settings. Pressing the Sub On/Off button again or
selecting another decode mode cancels Sub Mute.
To make permanent settings to the speaker options
including the Subwoofer, use the ‘Speaker Config Menu’
in the On Screen Display (OSD).
Also, hold down and then press the volume up and down
buttons to adjust the overall sub level if desired.
On-screen Display (OSD)
Press to access the on-screen set-up menu when
connected to a monitor/screen via composite or S-video
connections.
Bass Treble
Press for bass/treble adjustment, using the Volume
up/down buttons.
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 menu.
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 menu.
Stereo
Modes
Audio In
Type
6.1
Direct
DSP
DRC
PL II
Neo 6
DD EX
DTS ES
LFE
Trim
Sub
On/Off
Tuner
AM/FM
Bass
Treble
ModeStore
Stereo
Mono
DisplayPTY APS
DVD Video 1 Video 2
Video 3 CD
Aux
Tape
MD/CDR
Enter
Vol
Vol
7

CAMBRIDGE AUDIO 540R V3
Connections Diagram 8

CAMBRIDGE AUDIO 540R V3
Exploded Diagram 9

CAMBRIDGE AUDIO 540R V3
Exploded Diagram Parts List
krameR.ytQnoitpircseD.ONtraP.leS
1 6531 1010 0010 VOLUMN KNOB AL SKIN
1BONKNMULOVPMA0000040113372
1REVOC3VA0900001113973
86X0.3BTBWERCS0300600311054
1SNELYALPSID0800010113475
1LENAPLA0240110113066
1EDIUGTHGILPMA0000030113477
85331 1010 0000 SCALEBOARD
01NMULOCBCP0000220113979
10 7631 1010 0000 MR CONTROL BOX BUTTON CUSHION
11 7331 1010 0010 MR CONTROL BOX BUTTON
1BCPENOHP10017110450021
13 5011 3014 0010 SCREW BTB3.0X14 10
14 7631 1020 0000 7MM TAC SWITCH BUTTON CUSHION
15 7331 1020 0010 7MM TAC SWITCH BUTTON
16 7631 1030 0000 4MM TAC SWITCH BUTTON CUSHION
17 7331 1030 0010 4MM TAC SWITCH BUTTON
514X0.3BTBWERCS01004003110581
1SNELRI00000201134791
1BCPNMULOV10003911450002
1BCPYALPSID10003101450012
1NOITAROCED01000101139722
1BCP3VA00013801450032
4DAPTOOF10000601139742
4TOOF01000501139752
48X0.3MB01008003210562
27 7531 1040 0000 540R front support right assy 1
1)THGIR(REVOCEDIS11001201134682
29 7531 1050 0000 540R rear support right assy 1
30 7531 1020 0000 540R front support left assy 1
88X6.2BTBWERCS00008062410513
1)TFEL(REVOCEDIS01001101134623
1REVOCPOT01000101131633
88X6.2MBWERCS01008062810543
646X0.3BTBWERCS01006003110553
1yssatfeltroppusraerR04500000301135763
1BCPESUF10010110450073
401=HNS01-SBC00000000117883
1REVOCMOTTOB01000201132693
1CVPBCP01050040807704
76=HNS6-SBC00000006017814
253=H283-TDDK00000005337824
242=LTLOB00000301139534
223=LTLOB00000101139544
1NAF16223352201954
2)3Hx4Dx01D(HSAW00000701139764
540R (V3) PARTS LIST
1
1
1
1
8
8
8
8
10

CAMBRIDGE AUDIO 540R V3
Exploded Diagram Parts List Cont.
103=HNS03-SBC00000000317874
2TEKCARBNAF00000301133584
1TEKCARBBCPEDOCED00000601133594
2TEKCARBKNISTAEH00000201133505
1KNISTAEH00000101131515
2NMULOCKNISTAEH00000201139525
1BCPNIAM00013001450035
54 5331 1050 0011 TRANSFORMER BRACKET 1
428X0.3BTBWERCS01008003110555
56 5020 3006 0360 NUTφ22.3
23MREHSAWGNIRPS10000003040575
58 5030 0800 3210 WASH φ3.2 x φ8.0 x 1.0mm 2
1REMROFSNARTSBTS00015531000495
1REMROFSNART00035101000406
1LAERUTAREPMET00000501139516
1BCPVUY20010411450026
248x0.3APWERCS01008003310536
1REVOCKCAB)V032(01400401133646
1REVOCKCAB)V511(01500401133646
1BCPDSO00013331450056
1BCPTUPTUO00013321450066
1BCPXAOC00013831450076
1XOBRENUT10003000008986
1BCPEDOCED70010821450096
1)T(BCPTCENNOC00013231450007
1)B(BCPTCENNOC30001231450017
1BCPNIRI00013121450027
73 5331 1090 0000 PCB SUPPORT BRACKET 1
1BCPIMDH00003641450047
75 4202 1025 0000 POWER SWITCH 10A 250V 1
11

CAMBRIDGE AUDIO 540R V3
540R V3 Available Parts List
AP PART NUMBER FACTORY PART NUMBER DESCRIPTION
049AS2061000490111510FP
718BS2041007180211610FP
3702CS2061003702311710FP
RB649DS2810FP
7401DS2031007401411910FP
5072CS2ROTSISNART140FP
)ASU(UCV011REMROFSNARTSNIAM1001-1101-004231FP
UE/KUV032REMROFSNARTSNIAM1002-5101-0004131FP
)2V/1VR045SAEMAS(REMROFSNARTYBDNATS53IE000155310004420FP
UEXOBRENUT3V/2VR045/R043100030000089350FP
UCXOBRENUT3V/2VR045/R043100030000089450FP
ETELPMOCBCPVUY3VR0452001-0411-4500331FP
BCPNIAM3VR0450001-3001-4500431FP
BCPDSO3VR0450001-3331-4500531FP
BCPTUPTUO3VR0450001-3831-4500631FP
BCPXAOC3VR0450001-3831-4500731FP
BCPREDOCED3VR0457001-0821-4500831FP
BCPIMDH3VR0450000-3641-4500931FP
PF056 SMALL COVER OVER F/P INPUTS 340R/540R V2 AV3 FRONT COVER BLACK
PF064 SMALL COVER OVER F/P INPUTS 340R/540R V2 AV3 FRONT COVER SILVER
)71CI(1K6183DB2VR045EMULOV71CI160FP
PF062 VR1 MASTER VOLUME ENCODER 540R V2 EC16B241047AA (VR1)
)5CI(2VR045ROFM68747CLCIM68747CL560FP
)EDOID(3A64103-6000-0531170FP
PF074 IC9 ON COAX PCB 74HCU04D IC FOR 540R V2 (IC1/IC9)
)4CI(2VR045ROFM1852MJNBCPVUYNO4CI670FP
2CITB4904FEH940FP
)KCALB(,)THGIR(REVOCEDIS10-000-400051-4556317YP
)REVLIS(,)THGIR(REVOCEDIS20-000-400051-4556417YP
)KCALB(,)TFEL(REVOCEDIS10-000-500051-4556517YP
)REVLIS(,)TFEL(REVOCEDIS20-000-500051-4556617YP
)TSOPRENROC(R045TROPPUSTHGIR0000-0401-1357430FP
)TSOPRENROC(R045TROPPUSTFEL0000-0501-1357530FP
)KCALB(REVOCPOT10-000-300051-4556717YP
)REVLIS(REVOCPOT20-000-300051-4556817YP
LORTNOCETOMER3VR0451621YP
KROWLATEMLENAPTNORFREVLISE3240-1101-1306041FP
KROWLATEMLENAPTNORFKCALB1240-1101-1306141FP
NOISREVUCDEMMARGORPJ04C4695MS11CI2318-0469-5001241FP
NOISREVKU/UEDEMMARGORPJ04C4695MS11CI2318-0469-5001341FP
12

CAMBRIDGE AUDIO 540R V3
Fuse Board and Headphones Circuit Board
1 2 3
CN5
3P(2.0)
F1
T5AL 250V
1
2
3
4RAY1
ME-14F R2
4.7K
R1
100
AC1 OUT AC2 OUT
TO SW
AC IN
R3 10K
C1
103MAC250V
1
2
3
CN1 2P7.92
1
2
3
CN4 2P7.92
1
2
3
CN2 2P7.92
1
2
3
CN3 2P7.92
C2
103MAC250V
TO MAIN BOARD
+14V
PON/OFF GND
FUSE BOARD
1
2
4
5
K
3
7
8
K
MIC1 MIC1
R6 1.2K/1W
R7 1.2K/1W
R4 10
R5 10
C4 104
C5 104
1 2
3
4
J1 4P2.0
C6 104
J
TO MAIN BRD
Ear Phones board
+C3
220/10
AC IN
D1 IN4148
Q1
C2120
13

CAMBRIDGE AUDIO 540R V3
Fuse Board, Headphone Circuit Board 14

CAMBRIDGE AUDIO 540R V3
Mains Transformer and Power Supplies (Main Circuit Board)
R239 100
R240 100
D43 1N4001
+
C107
330uF/63V
R241 3.3K/1W
D42 1N4570(27V)
+
C104
47uF/35V
D41 6C2
+ C103
10uF/50V
1 2
CN8
2P(2.5)
1 2
3
CN4
3P(3.96)
+5V
GND
~5.5V
~5.5V
GND
-27V
+
AC2
-
AC1
BL1
MB252
C97
0.1uF/100V
C98
0.1uF/100V
FH1
T12AL 250V
FH2
T12AL 250V
-55V
+55V
R235
RF/0.22/1W
R242
RF/0.22/1W
+
AC2
-
AC1
BL2
DB101G
+ C106
1000uF/25V
C105
0.1uF/100V
I1
G
2
O
3
IC1
L7805CV
+C102
47uF/16V
1 2 3 2 1
2
1
2 1
TO VIDEO BRD
3 2
1
~13V
~15V
~32V
~32V ~4.2V
~14V
TO DISPLAY BRD
+C101
470uF/25V
FAN+15V
+C96
470uF/25V
RELAY+15V
1
2
CN9
2P(2.5)
2 1
2 1TO FUSE BRD
D+5V
500mA
1.5A
4A 4A
250mA
200mA
1
2
3
CN11
3P(2.0)
R230 820
R231 270
R232 1.2K
Q85
2SC1627A-Y
FAN+15V
1 2
MFAN
FAN DRIVER
RT1
02DSB282J
TEMP SENSOR
+5V
TO FUSE BRD
+14V
ON/OFF
GND
3 2 1
~16.5V
~16.5V
1.5A 1.5A
~7.5V
1.5A
5 4
TO DEODER BRD
5P2.5
TO FUSE BRD
2P2.5
Q87
2SC2458
R245 22K
R246 100K
R247 22K
R249 15K
R248 1K
+
C109
2200U/10
SYS-MUTE
-55V
D44 1N4001
R243 4.7K
R244 470
+C108
22uF/25V
Q86
2SA1015
RELAY-STOP
1
2
CN3
2P(2.0)
1
2
CN1
2P(2.5)
1
2
3
4 5 6
CN5 6P(2.0)
P-ON/OFF
SYS MUTE M-RELAY
GND
MUTE-DELAY
FROM DECODER
PH-DET PH-DET
Rto-FUSE
125 C 2A250VAC
R104 10K
R101 6.2K
over load
PRO-TEST
OVER LOAD PROTECT
+C40
4.7uF/25V
R26 1K
C42
0.1uF/50V
Connected to bottom of cabinet
+14V
VIDEO3 board
2
G2
3
G3
1
G1
G5 G4
JK9
AV3-8.4-14
R117 220
R123 220
R124 47K
R126 47K
C81
330P/50V
C82
330P/50V
GND
C94
0.1uF/50V
VIDEO IN
C141
0.1uF/50V
LIN
C142
470P/50V
AGND
1
2
CN22 2P(2.0)
RIN
1
2
3
CN21 3P(2.0)
CE
R42
10/1W
R234
4.7/1W
Q17 2SC2458
R131 22K
Q38
2SA1015
D45 1N4148
D6 1N4148
Q88 2SC2878
D7 1N4148
D26 1N4001
R164 22K
R173 4.7K
R165 1K
+5V
1 2
CN6 2P(2.5)
D29 1N4148
1 2 3 4
CN17
4P(2.0)
PH-R
PH-L
PH-DET
PH-R
PH-L
GND
PH-DET
TO EarPHONE BOARD
C99
15000uF/63V
C100
15000uF/63V
R174 100K
R176 33K
C121
47UF/25V
C131 10uF/16V
D33 1N4148 D32 1N4148
D39 1N4001
D40 1N4001
PAMP-MODEL/CON
P/N:0054-1083-100B
1
2
3
4
5
6 7 8
CN10
8P(2.0)
15

CAMBRIDGE AUDIO 540R V3
Main Circuit Board (Output Stage)
Q8
2SC2073
Q6
2SD946BR
Q5
2SC2705
Q3
2SC2240
Q7
2SA940
Q4
2SA970
Q2
2SA970
R24
0.22/5WX2
Q9 2SB817
Q10
2SD1047
R22
220/0.25W
R21
4.7/0.5W
R23
4.7/0.5W
C10
150P/50V
D1
1N4148
D2
1N4148
C11
150P/50V
R20 220
R15
5.6K/0.25W
R16
2K
R17
2.7K
R18
220
R14 100
C8
20P/50V
+
C9 47uF/50V
C7
12P/50V
R13 47K
R10 470K
R9 8.2K
R12
1.5K
R11 1.8K
R8
1K
R7 1.2K
R6 1.8K
C4
1200P/100V
C3
47P/50V
C2
1500P/100V
R5
47K
R4 820
+
C1
10uF/16V
R3 100K
Q1
2SC2878
R2 6.8K
S+12V +55V
-55V
R-IN
DW1
6A3
DW2 6A3
L1 0.5UH
R25
10/0.25W
R19
5.6K/0.25W
C5
1000P/50V
+C6
100uF/16V
Q29
2SC2073
Q26
2SD946BR
Q25
2SC2705
Q22
2SC2240
Q28
2SA940
Q23
2SA970
Q20
2SA970
R83
0.22/5WX2
Q31 2SB817
Q33
2SD1047
R80
220/0.25W
R78
4.7/0.5W
R82
4.7/0.5W
C34
150P/50V
D9
1N4148
D11 1N4148
C36
150P/50V
R75 220
R68 5.6K/0.25W
R70
2K
R72
2.7K
R73
220
R67 100
C31
20P/50V
+
C32 47uF/50V
C29
12P/50V
R65 47K
R60 470K
R58 8.2K
R63
1.5K
R62 1.8K
R56
1K
R55 1.2K
R53 1.8K
C24
1200P/100V
C22
47P/50V
C20
1500P/100V
R51
47K
R49 820
+
C18
10uF/16V
R47
100K
Q18
2SC2878
R43
6.8K
S+12V +55V
-55V
L-IN
DW3
6A3
DW5
6A3
L2 0.5UH
R85
10/0.25W
R74
5.6K/0.25W
C26
1000P/50V
+C27
100uF/16V
Q30
2SC2073
Q27
2SD946BR
Q55
2SC2705
Q52
2SC2240
Q58
2SA940
Q24
2SA970
Q21
2SA970
R84
0.22/5WX2
Q61 2SB817
Q32
2SD1047
R81
220/0.25W
R79
4.7/0.5W
R159
4.7/0.5W
C35
150P/50V
D10
1N4148
D21
1N4148
C70
150P/50V
R77 220
R69 5.6K/0.25W
R71
2K
R151
2.7K
R153
220
R147 100
C66
20P/50V
+
C33 47uF/50V
C30
12P/50V
R66 47K
R61 470K
R59 8.2K
R64
1.5K
R143 1.8K
R57
1K
R138 1.2K
R54 1.8K
C25
1200P/100V
C23
47P/50V
C211500P/100V
R52
47K
R50 820
+
C19
10uF/16V
R48 100K
Q19
2SC2878
R44 6.8K
S+12V +55V
-55V
RS-IN
DW4
6A3
DW9
6A3
L4 0.5UH
R163
10/0.25W
R76
5.6K/0.25W
C62
1000P/50V
+C28
100uF/16V
Q60
2SC2073
Q57
2SD946BR
Q56
2SC2705
Q53
2SC2240
Q59
2SA940
Q54
2SA970
Q51
2SA970
R161 0.22/5WX2
Q62 2SB817
Q63
2SD1047
R158
220/0.25W
R157
4.7/0.5W
R160
4.7/0.5W
C69
150P/50V
D20 1N4148
D22
1N4148
C71
150P/50V
R156 220
R149 5.6K/0.25W
R150 2K
R152
2.7K
R154
220
R148 100
C67
20P/50V
+
C68 47uF/50V
C65
12P/50V
R146 47K
R142 470K
R141 8.2K
R145
1.5K
R144 1.8K
R140
1K
R139
1.2K
R137 1.8K
C63
1200P/100V
C60
47P/50V
C591500P/100V
R136
47K
R135 820
+
C58
10uF/16V
R134 100K
Q50
2SC2878
R132 6.8K
S+12V +55V
-55V
LS-IN
DW8
6A3
DW10
6A3
L5 0.5UH
R162
10/0.25W
R155
5.6K/0.25W
C61
1000P/50V
+C64
100uF/16V
Q80
2SC2073
Q78
2SD946BR
Q77
2SC2705
Q75 2SC2240
Q79
2SA940
Q76
2SA970
Q74
2SA970
R222
0.22/5WX2
Q81 2SB817
Q82
2SD1047
R220
220/0.25W
R219
4.7/0.5W
R221
4.7/0.5W
C92
150P/50V
D34
1N4148
D35
1N4148
C93
150P/50V
R218 220
R213 5.6K/0.25W
R214 2K
R215
2.7K
R216
220
R212 100
C90
20P/50V
+
C91
47uF/50V
C89
12P/50V
R211 47K
R208 470K
R207 8.2K
R210
1.5K
R209 1.8K
R206
1K
R205 1.2K
R204 1.8K
C87
1200P/100V
C85
47P/50V
C841500P/100V
R203
47K
R202 820
+
C83
10uF/16V
R201 100K
Q73
2SC2878
R199 6.8K
S+12V +55V
-55V
C-IN
DW13
6A3
DW14 6A3
R217
5.6K/0.25W
C86
1000P/50V
+C88
100uF/16V
SYS-MUTE
FL channel
K1A JZC-42F
JK2C
JZC-42F JK3C
JZC-42F
K2B
JZC-42F
K3B JZC-42F
Q45
2SC2073
Q43
2SD946BR
Q42
2SC2705
Q39
2SC2240
Q44
2SA940
Q41
2SA970
Q37
2SA970
R129 0.22/5WX2
Q49
2SB817
Q48
2SD1047
R127
220/0.25W
R125
4.7/0.5W
R128
4.7/0.5W
C54
150P/50V
D18
1N4148
D19
1N4148
C56
150P/50V
R122 220
R116 5.6K/0.25W
R118
2K
R119
2.7K
R120
220
R115 100
C51
20P/50V
+
C52
47uF/50V
C49
12P/50V
R113 47K
R109 470K
R107 8.2K
R112
1.5K
R111 1.8K
R106
1K
R105 1.2K
R103 1.8K
C45
1200P/100V
C43 47P/50V
C411500P/100V
R102
47K
R100 820
+
C39
10uF/16V
R99 100K
Q36
2SC2878
R97 6.8K
DW6
6A3
DW7 6A3
L3 0.5UH R130
10/0.25W
R121
5.6K/0.25W
C46
1000P/50V
+C47
100uF/16V
L7 0.5UH
R223
10/0.25W
BS channel
R181
2.2K
R175 22K
R179
2.2K
R177 22K
Q65
2SC2240
C76
2.2U/50V/NP
D28
1N4148
D30
1N4148
D27 1N4148
R189 22K
R224
2.2K
R228 22K
R166 2.2K
R226 22K
Q83
2SC2240
C74
2.2U/50V/NP
D37 1N4148
D36
1N4148
D38 1N4148
R167
2.2K
R172 22K
R168
2.2K
R169
22K
Q64
2SC2240
C75
2.2U/50V/NP
D24 1N4148
D23
1N4148
D25 1N4148
R87 2.2K
R94 22K
R89 2.2K
R92 22K
Q34
2SC2240
C38
2.2U/50V/NP
D14 1N4148
D12
1N4148
D16 1N4148
R88 2.2K
R95 22K
R90 2.2K
R93 22K
Q35 2SC2240
C13
2.2U/50V/NP
D15 1N4148
D13
1N4148
D17 1N4148
R27 2.2K
R31
22K
R28 2.2K
R30
22K
Q11
2SC2240
C14
2.2U/50V/NP
D4 1N4148
D3
1N4148
D5 1N4148
R29 22K
R91 22K
R171 22K
R170 22K
R227 22K
K3A JZC-42F
-55V
+55V
S+12V
SYS-MUTE
BS-IN
+55V
-55V
FL
FR
SL
SR
CPOWER
BS
R229
2.4K/3W
DW15 1N4742A
+
C95
100uF/16V
+55V
S+12V
R1 1.5K
R45 1.5K
R46 1.5K
R133 1.5K
R200 1.5K
R96 1.5K
Q15
2SC2458
Q16
2SC2235
Q13
2SC2458
Q12
2SC2458
Q14
2SA970
R32
47K
R33 47K
R34
10K
R38 100K
R37 10K
R35 10K
+
C15
470uF/10V
C17
0.1uF/50V
C16 473
+14V
MUTE-DELAY
Speaker Protect
K1B JZC-42F
JK1C
JZC-42F
K2A
JZC-42F
R36 2K2
RELAY-STOP
R39 100K
RELAY+15V
FL-OUT FR-OUT
C-OUT
RS-OUT
LS-OUT
BS-OUT
1
2
3
4
5
6
7
8
9
10
CN16
10P(2.5)
C-OUT
RS-OUT LS-OUT BS-OUT
FR-OUT
FL-OUT
FR FL
C RS LS BS GND GND GND GND
POWER OUT
PH-R
PH-L
FROM DECODER BOARD
FL FR
SL
SR C SYS-MUTE BS
L-IN
R-IN
LS-IN
RS-IN
C-IN
BS-IN
over load
FR channel
RS channel
C channel
LS channel
R40
1K +
C171
470uF/10V
+C179
220uF/16V
R198
8.2K
D31 1N4148
+
C180
10uF/50V
GND
D8
IN4001
C115 10UF/16V
C116 10UF/16V
C117 10UF/16V
C120 10UF/16V
C119 10UF/16V
C118 10UF/16V
V3-LIN
V3-RIN
TO V3 BRD
AGND
1 2 3
CN2 3P(2.0)
1
2
3
4
5
6
7
8 9
10
11 12 13 14
15
16
CN18 16P2.0(180)
V3-LIN
V3-RIN
AGND
SYS-MUTE
PAMP-MODEL/CON
Q40
2SC2235
RELAY-STOP R178
100K
+C37
470uF/10V
D50 1N4148
D48
1N4148
D47 1N4148
D49 1N4148
D51 1N4148
D52
IN4001
D46 1N4148
16

CAMBRIDGE AUDIO 540R V3
Main Circuit Board, Speaker Circuit Board 17

CAMBRIDGE AUDIO 540R V3
Display Circuit Board
GR9 42
GR8 41
GR7 40
GR6 39
GR5 38
SG1/KS1 10
SG2/KS2 11
SG3/KS3 12
SG4/KS4 13
SG5/KS5 14
SG6/KS6 15
SG7/KS7 16
SG8/KS8 17
SG9/KS9 18
SG10/KS10 19
SG11/KS11 20
SG12/KS12 21
SG13/KS13 22
SG14/KS14 23
SG15/KS15 24
SG16/KS16 25
SG17 26
SG18 27
SG19 28
SG20 29
SG21 30
SG22 31
SG23 32
SG24 33
GR1 34
GR2 35
GR3 36
GR4 37
VEE
50
VDD
51
VDD
9
OSC
7
GND
8
DOUT
4
DIN
2
CLK
1
STB
3
K1
5
K2
6
GR10 43
GR11 44
GR12 45
GR13 46
GR14 47
GR15 48
GR16 49
GND
52
IC1
PT6324-Q(L)
F1
1
G14
5
G13
6
G12
7
G11
8
G10
9
G9
10
G8
11
G7
12
G6
13
G5
14
G4
15
G3
16
G2
17
G1
18
P1
42
P2
43
P3
44
P4
45
P5
46
P6
47
P7
48
P8
49
P9
50
P10
51
P11
52
P12
53
P13
54
P14
55
P15
56
P16
57
P17
58
F2
62
VF1
14-MT-41GNK
16
15 14 13 12
11 10 9
8 7
6
5 4 3 2
1
CN2 16P(1.0)90
+V
3
GND
2
OUT
1
IR1
RPM-638CBR-L
1 2
3
4 5 6
CN1 6P(2.0)LIN
D2 IN4148
D3 IN4148
D4 IN4148
D5 IN4148
D6 IN4148
R27
10K
R25
10K
R26 10K R24 10K
C7 104
R23 82K
R3 22K
R1
22K R22
1K2
R2
620
C4
104
C1
100U16
- +
LED1
3mmBlue LED
Q1 C2458
C2 100U10
+5V
C5
104 C3
100U16
OPT ON/OFF
REMOTE
VIDEO ON/OFF
VDF-DA
VDF-CLK VDF-STB
VOL-A VOL-B
DGND
B
MUTE-DELAY
4094-CLK
4094-DA
4094-ST
C
TV-ON/OFF
+5V
DGND
F1
F2
DGND
-27V
1 2 3
CN4 3P(2.0)
R28 47
1 2
3
4
5
VR1
EC16B241047AA
C6
104
1 2 3
CN5 3P(2.0)
VOL BOARD
VOL-A
VOL-B DGND
C8 104
+5V
Q5 14
Q6 13 Q7 12 Q1 4 Q2 5 Q3 6 Q4 7
Q8 11
QS 9
CS
10
CLK
3
SDA
2
STR
1
OE
15
VDD
16
VSS
8
IC2
HEF4094BT
FROM AMP PCB
FROM DECODE PCB
TO MASTER VOL PCB
TO DISPLAY PCB
+5V
+5V
D1 IN4148
D7 IN4148
D8 IN4148
D9 IN4148
SW1 SW
SW3 SW
SW5 SW
SW7 SW
SW9 SW
SW11 SW
SW13 SW
SW15 SW
SW2 SW
SW4 SW
SW6 SW
SW8 SW
SW10 SW
SW12 SW
SW14 SW
SW16 SW
SW17 SW
G1
G2
G3
G4
G5
G6
G7
G8
G9
G10
G11
G12
G13
G14
P1
P2
P3
P4
P5
P6
P7
P8
P9
P10
P11
P12
P13
P14
P15
P16
P17
G1
G2
G3
G4
G5
G6
G7
G8
G9
G10
G11
G12
G13
G14
P1
P2
P3
P4
P5
P6
P7
P8
P9
P10
P11
P12
P13
P14
P15
P16
P17
P1
P2
P3
P4
P5
P6
P7
P8
P9
VOL-A
VOL-B
R24
R26
-27V
DGND
F1
F2 DGND +5V
C9
104
Terminal Erth
C12
104
C13 10U/50v
D10 1n4148
C10
104
C11
104
18

CAMBRIDGE AUDIO 540R V3
Display Circuit Board 19

CAMBRIDGE AUDIO 540R V3
Decoder Circuit Board (Power Supplies)
6
5
7
8
IC20B
NJM2068
6 5
7
8
IC21B
NJM2068
C85 470P/50V
R121 2.8K
R133 634
R141
90.9
R134
634
R135 634
R142
90.9
R51 10K
R145
332
R139
3.32K
R123
1K
C86 470P/50V
C50
0.1uF/50V
C51
0.1uF/50V
C52
0.1uF/50V
+
C99 100uF/10V
+
C98
100uF/10V
C108
2700P/100V
AGND
AGND
AGND
AGND
2 3
1
4
IC20A
NJM2068
2
3
1
4
IC21A
NJM2068
C87 470P/50V
R122 2.8K
R136 634
R143
90.9
R137
634
R138 634
R144
90.9
R52 10K
R146
332
R140
3.32K
R124
1K
C88 470P/50V
C53
0.1uF/50V
C54
0.1uF/50V
C55
0.1uF/50V
+
C101 100uF/10V
+
C100
100uF/10V
C109
2700P/100V
AGND
AGND
AGND
AGND
AINR+
AINR- AINL+
AINL-
R-O
L-O
R119
1.5K
R120 1.5K
AGND AGND
AGND AGND
C56
0.1uF/50V
C57 0.1uF/50V
+
C102
100uF/10V
1 3
2
IC16 KA7805A
5VA
AC1
V+
AC2
-V
D5
DB104G
AC1
V+
AC2
-V
D4
DB104G
+
C138
4700uF/16V
C114 0.1uF/50V
11 22
33
44 55
5P
J2
5P(2.5)
VIN
1
GND
2
VOUT 3
U1 KA7805
+
C141
100uF/10V
C115 0.1uF/50V
5VD
+
C139
3300uF/25V
C118 0.1uF/50V
VIN
1
GND
2
VOUT 3
U2 KA7812
+
C143
47uF/25V
C120 0.1uF/50V
+
C140
3300uF/25V
C121 0.1uF/50V
+
C144
47uF/25V
C119
0.1uF/50V
VIN
2
GND 1
VOUT 3
U4
KA7912A
12V
-12V
R169
1W/0.22(RF)
R170
1W/0.22(RF)
R168 1W/0.22(RF)
I
3
A
1
O2
U3 LD1117DT25
C116
0.1uF/50V +
C142
47uF/25V
C117 0.1uF/50V
AGND
2.5VD
AGND
2.5V
5VD
DGND
DGND
IN 1
1
IN 2
3
AGND
2
AGND
4
VEE
5
AGND
6
VCC
7CLK 8
DATA 9
MUTE 10 DGND 11
SEL 12
OUT 2 13 OUT 1 14
LOGIC
IC15
BD3812F
Y1
1
Y0
2
VEE 7
VSS
8
YCOM 15
VDD
16
X1
13
X0
12
XCOM 14
Z1
3
Z0
5
ZCOM 4
A11 B10
C9
INH
6
IC14 TC4053BF
7.1 CH USE
DVD BR
DSP BR
VOL-CLK
VOL-DATA
+
C131 10uF/16V
R159
68K
BR
AGND
BR OUT
3816 MUTE
C112 0.1uF/50V
C113 0.1uF/50V
AGND
AGND
R61 820K
AGND
C111
0.1uF/50V
C110
0.1uF/50V
AGND
DVD/DSP
AGND
AGND
Q6
2SC2120
Q5
2SA950
D6 6B8 D7 6B8
R173
1K
R174
1K
AGND
+C78
47uF/25V
+C79
47uF/25V
+C80
47uF/25V
+C81
47uF/25V
+7V
-7V
14.5V~ 14.5V~
7.5V~
R171 6.8
R172 6.8
C145 333 C146 333
+
C132 100uF/16V
+C133
100uF/16V
R148
150
R147
150
R149 150
R150
150
AGND
AGND
C58
0.1uF/50V
C59 0.1uF/50V
CE
C60 0.1uF/50V C61 0.1uF/50V
DGND AGND
-vv
15NC12
20