Cambridge Audio 340C Schematic
340C
Issue Date: 30th November 2004
________________________________________________________________________
SERVICE MANUAL
________________________________________________________________________
SPECIFICATIONS:
D/A Converter Crystal
CS4338
24-Bit/96kHz
Capable
Freq response (-0.5dB) 10Hz to 20kHz
THD 0.007%
Dynamic Range > 89dB
Digital Outputs Opt and Coax
Dimensions mm (HxWxD) 70 x 430 x 310
Weight (kg) 4.6
AP16820/1
Gallery Court Hankey Place London SE1 4BB UK
Tel: +44 (0)20 7940 2200 Fax: +44 (0)20 7940 2233
340C SERVICE MANUAL
TABLE OF CONTENTS
Safety Precautions & Important Notes 3
Laser Safety Precautions 4
Exploded Assembly Drawing 5
Front Panel PCB Schematic 6
Front Panel PCB Layout (Top Side) 7
Front Panel PCB Layout (Bottom Side) 8
Output PCB Schematic 9
Output PCB Layout (Top Side) 10
Output PCB Layout (Bottom Side) 11
Mains PCB Schematic 12
Mains PCB Layout (Top Side) 13
Mains PCB Layout (Bottom Side) 14
Servo PCB Schematic
Servo PCB Schematic (Power Supply) 16
Servo PCB Layout (Top Side)
Servo PCB Layout (Bottom Side) 18
Front Panel PCB BOM 19
Output PCB BOM 20
Main Assembly BOM 21/22
Servo PCB BOM 23/24
IC Pin Layout Details 25-29
15
17
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
COPYRIGHT NOTICE.
© 2005 Audio Partnership PLC. All rights reserved.
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.
LASER SAFETY PRECAUTIONS
y
Caution: These labels may be attached to the unit on the rear and inside to
inform that it contains a laser component. Use of controls or adjustments, or
performance of procedures other than those specified within the service or
instruction manual may result in hazardous radiation exposure.
CLASS 1 LASER PRODUCT
WARNING!
1. Service should only be performed by qualified personnel.
2. This equipment has been designed and manufactured to meet
international safety standards; it is the legal responsibility of the repairer to
ensure that these safety standards are maintained.
3. Any repairs must be made in accordance with the relevant safety
standards.
4. It is essential that safety and EMC critical components are replaced with
Cambridge Audio approved parts only.
NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK OR BASE UNIT
The laser diode in the optical pick-up block may suffer electrostatic breakdown because of the
potential difference generated by the charged electrostatic load, etc. on clothing and the human
body.
During repair, pay attention to electrostatic breakdown and also use the procedure in the printed
matter which is included in the repair parts.
The flexible board is easily damaged and should be handled with care.
NOTES ON LASER DIODE EMISSION CHECK
The laser beam on this model is concerated so as to be focused on the disc reflective surface b
the objective lens in the optical pick-up block. Therefore, when checking the laser diode
emission, observe from more than 30cm away from the objective lens.
8
Drawing ref AP part Factory ref Description
1 CA new side panel
7
6
5
4
3
2
REV
1
EDITOR
GTL
1
REVISIONS & DATE
DATE
26/11/04
2 CA new plastic insert rear
2
6
15
11
5
16
4
3 CA new plastic insert front
4 CA new back panel
5 PY507 6550-010204-000-01 Azur 640C Top Panel Black
F
5 PY508 6550-010204-000-02 Azur 640C Top Panel Silver
6 PY515 7002-608010-001 Screw M2.6 x 8 M/C Torx Recessed 1/K Head Black
REVISIONS NOTES:-
F
6 PY516 7002-608010-006 Screw M2.6 x 8 M/C Torx Recessed 1/K Head En-Plated (silver)
1: ORIGINAL DRAWING 26/11/04.
7 PY792 6564-010001-000A04 Azur-340C FRONT PANEL Silver (Aluminium panel)
7 PY786 6564-010001-000-04 Azur-340C aluminium FRONT PANEL-Black W/S Cool grey 7C
8 PY791 8534-001010-301 Azur-340C Complete FRONT PANEL ASSY (Silver) REV A
8 PY785 8534-001020-301 Azur-340C Complete FRONT PANEL ASSY (BLACK) REV A
9 PY563 3200-576690-100 TRANSFORMER 115V/230V AC10V/2A 16*2/0.5A ES-57-669
10 PY541 6050-150010-000A01 PLASTIC FOOT GREY PAINT SILVER
10 PY531 6050-150010-000 PLASTIC FOOT BLACK (AP126522)
11 PY340 9692-006002-101 Mechan Assy (PU92TL-210) W/Sony KSM213CCM ReV A
12 PY790 3009-213000-000 Sony laser assy KS213CCM
13 PY719 6050-150012-000-01 7MM TAC SWITCH BUTTON (BLACK)
13 PY720 6050-150012-000A01 7MM TAC SWITCH BUTTON (SILVER)
E
14 PY704 6600-170104-000 CA NEW RANGE AMP 7MM TAC SWITCH CUSHION
E
15 PY787 9434-001000-011 Azur-340C MAIN BOARD ASSY (AP146471) REV A
16 PY789 9434-001000-531 Azur-340C OUTPUT BOARD ASSY AP14647/4 REV A
17 PY788 9434-001000-071 Azur-340C 230V POWER PCB ASSY REV A
18 PY573 9805-064001-000 Azur-340/540/640AC REMOTE CONTROL ASSY
19 PY544 6600-170100-000 FOOT PAD FOR Azur-640A
20 PY568 6564-010006-000A01 Azur-640C.Silver CD DOOR W/SILKSCREEN PMS COOL GREY 7C
20 PY554 6564-010006-000-01 Azur-640C.Black CD DOOR W/SILKSCREEN PMS COOL GREY 7C
21 PY552 3110-064580-100 LCD DISPLAY ISO6458P01V0 113*25.7MM NEGATIVE (BLACK UNIT)
21 PY562 3110-064580-000 LCD DISPLAY ISO6458P00V0 113*25.7MM POSITIVE (SILVER UNIT)
22 PY556 9464-001000-041 Azur-540C & 640C CONTROL BOARD ASSY REV A
Note:user manual is downloadable from our www.cambridge-audio.co.uk
D
D
17
20
12
9
C
C
22
21
DRAWING NOTES:-
B
B
1
7
8
3
A
COPYRIGHT
AUDIO PARTNERSHIP PLC
14
8
7
6
13
19
5
10
18
4
3
3 GALLERY COURT
HANKEY PLACE
LONDON SE1 4BB
TEL: 0207 940 2200
FAX: 0207 940 2233
E-MAIL grahame@audiopartnership
E-MAIL nick@audiopartnership
E-MAIL simon.freeth@audiopartnership
PROJECTION
THIRD ANGLE
2
UNLESS OTHERWISE SPECIFIED:
DIMENSIONS ARE IN MM's
TOLERANCES:
WHOLE NO.s IE 75 0.5mm
1 DECIMAL IE 75.5 0.2mm
ANGULAR
MATERIAL:
FINISH:
0.1mm2 DECIMAL IE 75.75
0.5
--
--
PROPRIETARY AND CONFIDENTIAL
THE INFORMATION CONTAINED IN THIS DRAWING IS THE SOLE PROPERTY OF
AUDIO PARTNERSHIP PLC.
ANY REPRODUCTION IN PART OR AS A WHOLE WITHOUT THE WRITTEN PERMISSION
OF AUDIO PARTNERSHIP IS PROHIBITED.
AUDIO PARTNERSHIP PLC
TITLE:
340C EXPLODED ASSEMBLY
DRAWING.
SIZE
A0
1:5SCALE:
DWG. NO.
AP16809/1
DO NOT SCALE FROM DRAWING
1
OF 1SHEET
A
1
Cambridge Audio Azur 340C CD Player
CN2
CONN-H8
CN3
CONN-H8
CN4
CONN-H7
CN7
CONN-H7
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
+5V
1
RESET
2
PWR DET
3
4
5
6
7
LCD1
COM0
1
COM1
2
COM2
3
COM3
4
SEG0
5
SEG1
6
SEG2
7
SEG3
8
SEG4
9
SEG5
10
SEG6
11
SEG7
12
SEG8
13
SEG9
14
SEG10
15
SEG11
16
SEG12
17
SEG13
18
SEG14
19
SEG15
20
SEG16
21
SEG17
22
SEG18
23
LCD
PACKAGE=LCD D600
+5V
R15
330R
C4
100n
R6
K1
10K
C2
1000p
R11
K2
3K3
C3
1000p
SW1
PLAY/PAUSE
SW3
OPEN/CLOSE
U2
+5V
3
GND
2
OPT
1
TSOP18 IR RECEI
R5
2K7
R10
68K
SW2
STOP
R3
27KR433K
+5V
FORWARD SKIP FORWARD SEARCH
R8
1K5
BACKWARD SKIP BACKWARD SEARCH
U3
1
2
3
4
5
6
7
16C505
C1
100n
VDD
RB5/OSC1/CLKIN
RB4/OSC2/CLKOUT
RB3/MCLR/VPP
RC5/TOCKI
RC4
RC3
R9
82K
R7
82K
C6
10uF 10V
14
VSS
13
RB0
12
RB1
11
RB2
10
RC0
9
RC1
8
RC2
SW6
SW-TACT
CN1
CONN-H2
SW4
SW-TACT
1
2
R12
4K7
Q2
BC327
SW5
SW-TACT
+5V
R13
10K
CN5
CONN-H3
CN6
CONN-H3
1
2
3
R14
820R
D2
LED
Standby
1
2
3
R1
820R
P2
PAD
P1
PAD
R16
33R
Q1
BC337
R2
1K8
D1
1N4148
D3
1N4148
AP12992/3 Front Panel PCB Schematic
PGND
Cambridge Audio Azur 340C CD Player
AP12992/3 Front Panel PCB Layout (Top Side)
Cambridge Audio Azur 340C CD Player
AP12992/3 Front Panel PCB Layout (Bottom Side)
Cambridge Audio Azur 340C CD Player
CN2
Analogue O/P
U2:B
3 4
74HC14
U2:C
5 6
DGND
DOUT
R1
VCC
1
2
3
3
R3
47R
3
2
1
C6
4.7n cer
EMC
CN1:B
ZUANBAOAV2-8,4-13EL
C1
RIGHT CHANNEL
4.7n cer
EMC
C2
4.7n cer
EMC
4
1
2
CN1:A
ZUANBAOAV2-8,4-13EL
LEFT CHANNEL
AGND
Data In
+5V
CN3
74HC14
U2:D
13 12
74HC14
100R
R2
10R
C9
C4
100nF
100nF
GND
U2:F
9 8
74HC14
U2:A
1 2
74HC14
U2:E
11 10
74HC14
C5
10u 16V
DGND
R32
430R
2
3
1
C3
100nF
U1
VCC
INPUT
GND
APTX179AT
R31
FB1
FERRITE BEAD 5uH
C7
91R
330pFC8330pF
FB2
FERRITE BEAD 5uH
C25
100nF
DGND
CN4
ZUANBAO AV-8,4-8ES
3
1 2
C26
100nF
AP14644/4 Output PCB Schematic
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