Cambridge Audio Azur 340A Manuel utilisateur

Gallery Court Hankey Place London SE1 4BB UK

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

340A

Issue Date: 18th June 2004

________________________________________________________________________

SERVICE MANUAL

________________________________________________________________________

SPECIFICATIONS:

Power Output 40W (into 8Ω)

50W(into4Ω)

Max Power Consumption 345W

Total Harmonic Distortion 1kHz < 0.009%

20kHz < 0.09%

Frequency Response (-1dB) 5Hz – 50kHz

S to N Ration (unweighted) 99dB

Slew Rate (into 8Ω) 20V/uS

Dimensions (HxWxD)

mm 70 x 430 x 310

Inches 2.8 x 16.9 x 12.2

Weight

Kg 6.2

Lbs 13.6

AP15844/1

340A SERVICE MANUAL

TABLE OF CONTENTS

Safety Precautions & Important Notes 3

Main Assembly BOM 4/5

Micro controller PCB Schematic (PIC’s/Switches/LED’s) 6

Micro controller PCB Layout (Top Side) 7

Micro controller PCB Layout (Bottom Side) 8

Front Panel PCB Assembly BOM 9

Main PCB Schematic (Input Select) 10

Main PCB Schematic (Power Amplifiers) 11

Main PCB Schematic (Power Supplies) 12

Main PCB Schematic (Tone Control) 13

Main PCB Layout (Top Side) 14

Main PCB Layout (Bottom Side) 15

Main PCB BOM 16-18

IC Pin Layout Details 19/20

Silver – Black Differences BOM 21

SAFETY PRECAUTIONS & IMPORTANT NOTES

1.Check that the rear of the product indicates the correct supply voltage

for you area.

2. The lighting flash with the arrowhead within an equilateral

triangle is intended to alert the user or service agent to the

presence of dangerous voltages within the product enclosure

that may be of sufficient magnitude to constitute a risk of

electric shock to persons.

3. The exclamation point within an equilateral triangle is

intended to alert the user or service agent to the presence of

important operating and maintenance (Servicing) instructions

in the literature accompanying the appliance.

4. This product complies with EEC Low Voltage (73/23/EEC) and

Electromagnetic Compatibility (89/336/EEC) Directives when used and

serviced in accordance with this manual. For continued compliance all

components marked safety and EMC critical must only be replaced by

Cambridge Audio approved parts.

5. Any unauthorised design alterations or additions will void the

manufacturer’s warranty; furthermore the manufacturer cannot accept

responsibility for personal injury or property damage resulting therefrom.

6. When servicing, care should be taken to observe the original routing

and dressing of the leads and it should be confirmed that they have been

returned to normal after re-assembly.

Notes on chip component replacement

Never reuse a component that has been removed from a PCB

Notice that the minus side of a tantalum capacitor may be damaged by heat

Cambridge Audio and Azur are registered trademarks of Audio Partnership PLC. This document

may not be reproduced, distributed, transmitted, displayed, published, or broadcast without the

express written prior permission of Audio Partnership PLC.

Alteration or removal of any trademark, copyright, or other notice from this content is prohibited.

Information provided in this document is provided solely for the use of official service agents in

repairing and servicing Audio Partnership PLC products.

AP14861/4

AP PART

No.

DRAWING NO DESCRIPTION QTY COMMENTS

Chassis Assembl

AP14160/1 Bottom Panel 1

PY541 AP12652/2 Foot Mouldin

Silver 4 Position In Place on Bottom Panel

PY544 AP12883/3 Foot Pad 4 Affix on Foot Usin

Adhesive Surface

M3 X 8 Plastite Pozi Pan 4 Fix Feet To Bottom Panel.

7mm Plastic Su

ort 9 Push Sna

Fit On Bottom Panel

7mm Plastic Su

ort 4 Restin

Under PCB fastened to Bottom Panel

AP14775/1 7mm Plastic Standoff ( S

uare Sna

- In) 6 Fastenin

PCB to Bottom Panel

M3 X 8 Plastite Pozi Pan 6 To hold PCB to S

uare sna

-in Stand-offs

AP14561/3 Transformer toroidal 230

Transformer bolt M8 56mm thread len

th 1 Su

lied with Transformer. Secures transformer

Dished transformer

late 70 mm diam 1 Su

lied with Transformer. On to

of transformer

Rubber Washer 2 Supplied with Transformer. One is fitted under the

transformer and one on the to

, under dished washe

M8 nut 1 Su

lied with Transformer. Secures transformer

lain washe

1Su

lied with Transformer. Secures transformer

M8 lockin

washer 1 Su

lied with Transformer. Secures transformer

AP15528/1 Cambrid

e Toroidal 67mm label 1 Stick to to

of dished transformer

late 70 mm diam.

AP14862/2 Insulation Sheet 1 To Be Positioned Over Standoffs Under Power PCB

M4 X 12 Pozi Pan Machine Bolt 1 Fix Throu

h Earthin

Point hole on Bottom Panel

M4 Nut Standard 1 Used To Fix Above Bolts

M4 Lock Washer 1 For Earth Bolts

Earth

oint label 1 Place next to earth

oint bolt on bottom of chassis

PCB Gerber AP1

Main PCB Assembly BOM 1 Fixes onto the Bottom Panel With 7mm Plastic Standoffs.

Built to BOM AP15173/2

Front Panel Assembl

AP14159/1 Sub Panel 1 Fasten in place between the Ledges of the Front Panel, Align

The Power Button Holes

AP12931/1 Li

uide 3 Fasten To Sub

late. In

ut select LEDs

AP12931/1 Li

uide (half of) 0.5 Fasten To Sub

late. Power LED

M3 X 6 Pozi Pan St

Screw 4 Affixes Three Li

uide To Sub

late

PY638 AP14157/1 Front Panel (Punched And Printed) Silver 1 Extrusion Details AP12738* & Screened With Artwork

AP14826/1 & AP14828/2

AP12935/1 IR Lens 1 Glued In Place On The Front Panel

M3 X 6 C/S Pozi Machine Screw 7 Fasten The Sub Plate to the Front Panel. Only 7 screws are

fitted out of a

ossible 8. See drawin

AP15536/1

PCB Gerber AP1

IR PCB Assembly (part of F/P PCB assembly) 1 Fitted onto the Front Panel, bom is AP15185/2

asher N

lon M3, 1mm Thk 1 Fitted between Front Panel and IR PCB

M2.6 x 4mm Pan hd Poz Ta

tite 1 Use to fix IR PCB onto SubPanel

AP12934/1 7mm TAC Switch Cushion 6 Position on the 7mm tact switch Buttons, down the main

shaft affix usin

adhesive

rovided on the cushion.

AP12925/1 7mm TAC Switch Button 6 Position In Place On The Front Panel

AP12926/2 7mm Push Switch Button 2 Fitted to SW1 & 2 on main PCB

PCB Gerber AP1

Front Panel & MicroController PCB Assembly

BOM

1 Fixes onto the Sub Panel With M3 M/C Screws. Built to BOM

AP 15185/2

M3 X 6 Pozi Pan Machine Screw 7 Used For Fixing The Front Panel Pcb's To The Subplate

Standoff's

Side Panel Assembl

AP12725/2 Pressed Side Panel (2 Rid

e) 2

AP12727/1 Front Plastic Support (2 Ridge With Captive

M2.6 Nuts

)

2 Position at Front within Side Panels

AP12728/1 Rear Plastic Support (2 Ridge With Captive M2.6

Nuts

)

2 Position at Rear within Side Panels

M2.6 X 8 C/S Pozi Plastite 8 To Affix Side Panels To Plastic Inserts

Rear Panel Assembl

AP14162/2 Rear Panel Printed 1 Screened With Artwork AP14830/3

M3 X 10 Pozi Pan Plastite 8 To fix speaker terminal and Phono sockets connectors to

Rear Panel

M4 X 8 Pozi Pan Plastite 2 To fix IEC Power connector to Rear Panel

Cambridge Azur 340A Main Assembly BOM

AP PART

No.

DRAWING NO DESCRIPTION QTY COMMENTS

Final assembl

AP11879/3 O

us Control Box Powerswitch 1 Position in Place on the Front Panel

AP14819/1 Push Switch Bar Extension 1 Affix and

lue to Power Bar

CD4P AB05a Power Bar 1 Fitted to SW3 on main PCB

AP15512/1 Front Panel Insulation Sheet 1 Attach to main PCB with two tie-wra

Tie-wra

s (

lastic ties) Width 2.5mm 2 Attach insulation stri

to main PCB

PY592 AP10209/3 Cambrid

e Selector Knob Mk3 Silver 3

AP10224/1 Cambrid

e Knob Insert Mk2 3 Insert Into Selector Knobs

PY590 AP12750/2 Cambridge New Range Amp Volume Knob Silver 1

AP13361/1 A600 Volume Knob Blue Plastic Insert 1 Insert Into Volume Knob

AP13360/1 A600 Volume Knob Aluminium Skin 1 Glued and ta

ed In Place On Volume Knob

M3 X 10 Pozi Pan Plastite 4 To fix rear

anel to side

anels

M2.6 X 6 Pozi Pan Machine Screw 12 To fix Bottom Panel To Side, Front And Rear Panels

M2.6 x ??? 4 To fix Bottom Panel To Side Panels (at corners)

AP14865/1 Cambridge Azur 340A Microcontroller

Cableform

1 From Main PCB J2 to Front Panel PCB CN2

AP14896/1 Cambridge Azur 340A Volume Control

Cableform

1 From Front Panel PCB CN5 to Volume Pot Motor

AP15204/1 Cambridge Azur 340A Earth Lead 1 From earth pin of IEC Scoket (CN3) on main PCB to Chassis

earth stud

M4 Nut Standard 1 Used To Fix earth lead to earth stud

M4 Lock Washer 1 For above nut

LED wireform is attached to main PCB Glue

ower LED into li

ht-

uide

Liddin

AP13340/1 Liddin

e For Front And Rear Panels 2 Fix To The Correct Surfaces For Lid

AP13342/1 Liddin

e For Side Panels 2 Fix To The Correct Surfaces For Lid

PY640 AP14161/1 340A To

Panel (Silver) 1 Position To

Of The Product

PY516 M2.6 X 6 C/S Torx Machine Screw (Silver) 8 To Affix Top Panel to plastic Inserts, Side, Rear and Front

Panel

Packa

Serial Number Label, Blank (6.5X35.5mm) 1 print with serial number label and attached to rear panel

AP13612/1 Azur 2 Rid

e Woven Ba

1 Pack 340A Unit Inside

AP13504/2 Pol

Endca

Packa

AP13613/1 Azur Woven Ba

For Remote Control 1 Pack Remote Control Inside,

Azur Remote Control Complete. Model No RC-

340AC/540AC/640AC

1 Fit into Poly Endcap, buttons to face polystyrene, Packing in

Rebate Provided

AAA Alkaline Batteries 3 For Remote. Place In Instruction Manual Pol

PY637 AP15509/1 340A Am

Instruction Manual 1

Pol

173X260X4C mm 1 For Instruction Manual and Remote Batterie

1830mm AC IEC Power Cord Set BS Standard

Fused 3 AMP

1 Must Be Bs Approved

AP13505/1 Carton Packa

With Handle 1 Printed To Artwork AP13716/1

AP14696/1 Carton Label (Model No.) 1 For Bo

Blue Ta

e Seal For Cambrid

e Carton 1

NOTES: Issue 1 - 15.03.2004

Issue 2 - 23.04.2004

Cambridge Azur 340A Intergrated Amplifier

AP14518/1 Microcontroller PCB Schematic (PIC's/Switches/LED's)

RC6 17

RC5 16

RC4 15

RC3

14 RC2

13 RC1

12 RC0

11 OSC2

RA0

RA2

MCLR/Vpp

RA1

RA3

RB1 22

RB7 28

RA4

RA5

Vss2

OSC1

RB2 23

RB3 24

RB6 27

RB4 25

RB5 26

Vss 19

RC7 18

Vdd 20

RB0 21

PIC16F72

CRS1

FREQ=4MHz

CN5

H2 2.54mm 90

100n

FIN 1

GND1 2

RIN 3

NC 4

GND2 5

VCC 6

OUT2 7

COM 8

OUT1 9

BA6218

+5V

DGND

+5V

DGND

100n

220R

+5V

CHANNEL LED

SW2

SW3

TUNER/DAB

SW5

AV/MD

SW1

AUX/PHONO

SW6

TAPE MON

SW4

DVD

+5V

OPT

1GND

TSOP18 IR RECEI

100n

strobe

data

clockclock

data

strobe

vol up

vol down

vol up

vol down

47u 16V

220R

100n

CN2

H8 2.54mm 90

DGND

+5V

IR RECEIVER

AUX/PHONO CD TUNER/DAB TAPE MON

DVD AV/MD

CN3

CONN-H3

CN4

CONN-H3

MOTOR CONTROL

CONN TO MAIN PCB

MUTE

+5V

DGND

PORT B HAS WEAK PULLUPS 250uA typ

IN-CIRCUIT PROGRAMMING CONNECTOR

100K

+5V

DGND

+5V

GND

Vpp

CLK

CN1

ICP

GND

Data I/O

DGND

MUTE

TO MOTOR

VOLUME POT

+5V +5V

OUTPUT RELAY

IR IN

DC OFFSET

OUTPUT RELAY

47R

HI = NORMAL

10U 16V SM EL

TSOP1835/37

6 mA

86-756-8687998

To enhance viewing, please print to A3 6

Cambridge Azur 340A Intergrated Amplifier

AP14518/1 Microcontroller PCB Board Layout (Top Side)

86-756-8687998

To enhance viewing, please print to A3 7

Cambridge Azur 340A Intergrated Amplifier

AP14518/1 Micrcontroller PCB Board Layout (Bottom Side)

86-756-8687998

To enhance viewing, please print to A3 8

AP15185/3

AP PART

No.

DRAWING No DESCRIPTION QTY DESIGNATOR COMMENTS

47R Resistor 0.25W 1% metal film 1 R2

220R Resistor 0.25W 1% metal film 2 R3, R4

100K Resistor 0.25W 1% metal film 1 R1

100nF Ceramic NP0 or C0G 10% 4 C1, C4-C6

47uF 16V Radial Electrol

tic 1 C3

PY634 PIC16F72-I/SP 1 U1 Pro

rammed with AP14904/X

Version label for PIC 1 U1 Print with latest software version

number and stick on PIC.

PY260 BA6218 MOTOR DRIVE IC 1U2 As used in 540A. 4162-180002-300

SIL-8

acka

PD092 TSOP18 IR RECEIVER MODULE (VISHAY) 1 U3 As used in 540A 3001-183600-001

PY064 FLAT TOP BLUE LEDS (AS PER CURRENT

CAMBRIDGE

)

6 D1-D6 Please use flat top LED at standard

Azur hei

ICP Pico

lex PF-50 6-wa

male header 1 CN1 Vertical

H8 2.54mm 90 1 CN2 Ri

ht-an

le connector 8-wa

H2 2.54mm 90 1 CN5 Ri

ht-an

le connector 2-wa

H3 2.54mm 90 1 CN3 Ri

ht-an

le connector 3-wa

AP14897/1 Azur 340A IR PCB cable 1

2400-020200-000 Tactile Switch 6 SW1, 2, 3, 4, 5, 6 As used on 540A, CD, Tuner, AV,

Phono/Aux, Ta

e/Mon, DVD

Ceramic Resonator F=4MHz 1 CRS1

10mm lon

ire link 11 LK1-11

AP14519/1 Blank PCB 1

Note:

AP14518/1-B is the IR PCB assembl

Cambridge Azur 340A Front Panel PCB BOM

AP14518/1-A is the switch and micro controller PCB assembly

Cambridge Azur 340A Intergrated Amplifier

AP14476/3 Main PCB Schematic (Input Select)

CN4:A

QUAD PHONO

CN4:B

QUAD PHONO

CN4:C

QUAD PHONO

CN4:D

QUAD PHONO

CN5:A

QUAD PHONO

CN5:B

QUAD PHONO

CN5:C

QUAD PHONO

CN5:D

QUAD PHONO

CN8:A

QUAD PHONO

CN8:B

QUAD PHONO

CN8:C

QUAD PHONO

CN8:D

QUAD PHONO

U1:A

NE5532

U1:B

NE5532

-15V

+15V

-15V +15V

220K

100R

R10

100R

R14

100R

R15

220K

R16

220K

R17

100R

R18

R19

100R

R21

220K

R22

220K

R23

220K

R24

100R

R25

100R

R26

100R

R27

100R

R28

100R

R29

R30

220K

R31

220K

47n poly

C12

22p

C13

22p

R32

220K

R33

10k

R34

10k

R35

10k

R36

10k

R37

100K

R38

100K

R39

100K

R40

100K

R41

100R

R46

100R

R47

100R

C26

100nF 100V

L CH IN

R CH IN

R50

220K

R51

220K

CN9:A

DUAL PHONO

CN9:B

DUAL PHONO

LEFT RIGHT

TAPE RETURN RIGHT

TAPE RETURN LEFT

H8 2.54mm 90

+5V

INPUT/TAPE SELECT SWITCH

MUTE

MICROCONTROLLER

BOARD CONNECTOR

OUTPUT RELAY

DC OFFSET

DATA

CLOCK

STROBE

23 56

AB CD

LRLR

TAPE OUT R

AUX R

TUNER/DAB

DVD

AV/MD

AUX L

TAPE OUT L

TUNER/DAB

DVD

AV/MD

BTBT

Vss

L-S1

L-S2

L-S3

L-COM1

L-S4

L-S5

L-S6

L-COM2

L-S7

L-S8

L-COM3

GND

Vdd 28

R-S1 27

R-S2 26

R-S3 25

R-COM1 24

R-S4 23

R-S5 22

R-S6 21

R-COM2 20

R-S7 19

R-S8 18

R-COM3 17

DATA 16

CLK 15

TC9163

INPUT BUFFER

+ 6 dB

MAINS GND

C14

10U 16V

C25

10U 16V

86-756-8687998

To enhance viewing, please print to A3 10

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