Cambridge Audio 340C Service Manual
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Cambridge Audio 340C Service Manual

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Issue Date: 30
November 2004
________________________________________________________________________
SERVICE MANUAL
________________________________________________________________________
SPECIFICATIONS:
D/A Converter
Freq response (-0.5dB)
THD
Dynamic Range
Digital Outputs
Dimensions mm (HxWxD)
Weight (kg)
Gallery Court Hankey Place London SE1 4BB UK
Tel: +44 (0)20 7940 2200 Fax: +44 (0)20 7940 2233
Crystal
CS4338
24-Bit/96kHz
Capable
10Hz to 20kHz
0.007%
> 89dB
Opt and Coax
70 x 430 x 310
4.6
340C
AP16820/1

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Summary of Contents for Cambridge Audio 340C

  • Page 1 340C Issue Date: 30 November 2004 ________________________________________________________________________ SERVICE MANUAL ________________________________________________________________________ SPECIFICATIONS: D/A Converter Crystal CS4338 24-Bit/96kHz Capable Freq response (-0.5dB) 10Hz to 20kHz 0.007% Dynamic Range > 89dB Digital Outputs Opt and Coax Dimensions mm (HxWxD) 70 x 430 x 310...

  • Page 2: Table Of Contents

    340C SERVICE MANUAL TABLE OF CONTENTS Safety Precautions & Important Notes Laser Safety Precautions Exploded Assembly Drawing Front Panel PCB Schematic Front Panel PCB Layout (Top Side) Front Panel PCB Layout (Bottom Side) Output PCB Schematic Output PCB Layout (Top Side)

  • Page 3: Safety Precautions & Important Notes

    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.

  • Page 4: Laser Safety Precautions

    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.

  • Page 5: Exploded Assembly Drawing

    Screw M2.6 x 8 M/C Torx Recessed 1/K Head En-Plated (silver) 1: ORIGINAL DRAWING 26/11/04. PY792 6564-010001-000A04 Azur-340C FRONT PANEL Silver (Aluminium panel) PY786 6564-010001-000-04 Azur-340C aluminium FRONT PANEL-Black W/S Cool grey 7C PY791 8534-001010-301 Azur-340C Complete FRONT PANEL ASSY (Silver) REV A PY785...

  • Page 6: Front Panel Pcb Schematic

    Cambridge Audio Azur 340C CD Player LCD1 COM0 10uF 10V COM1 COM2 COM3 SEG0 100n SEG1 SEG2 SEG3 SEG4 CONN-H8 SEG5 SEG6 RB5/OSC1/CLKIN SEG7 RB4/OSC2/CLKOUT SEG8 RB3/MCLR/VPP SEG9 RC5/TOCKI SEG10 SEG11 SEG12 16C505 SEG13 SEG14 SEG15 SW-TACT SEG16 CONN-H8 SEG17...

  • Page 7: Front Panel Pcb Layout (Top Side)

    Cambridge Audio Azur 340C CD Player AP12992/3 Front Panel PCB Layout (Top Side)

  • Page 8: Front Panel Pcb Layout (Bottom Side)

    Cambridge Audio Azur 340C CD Player AP12992/3 Front Panel PCB Layout (Bottom Side)

  • Page 9: Output Pcb Schematic

    Cambridge Audio Azur 340C CD Player U2:B U2:F 74HC14 74HC14 U2:C U2:A 74HC14 74HC14 DGND U2:D U2:E 430R FERRITE BEAD 5uH 100nF 74HC14 74HC14 ZUANBAO AV-8,4-8ES 100R 330pF 330pF CN1:B ZUANBAOAV2-8,4-13EL RIGHT CHANNEL 4.7n cer INPUT FERRITE BEAD 5uH 100nF 4.7n cer...

  • Page 10: Output Pcb Layout (Top Side)

    Cambridge Audio Azur 340C CD Player AP14644/4 Output PCB Layout (Top Side)

  • Page 11: Output Pcb Layout (Bottom Side)

    Cambridge Audio Azur 340C CD Player AP14644/4 Output PCB Layout (Bottom Side)

  • Page 12: Mains Pcb Schematic

    Cambridge Audio Azur 340C CD Player 20MM T1AL BROWN earth X1 10n IEC-SOC 20MM F1AL BLACK X2 680N SUPPRESSION CONN-H3 CONN-H3 X1 10n 20MM F1AL BLUE AP13637/4 Mains PCB Schematic...

  • Page 13: Mains Pcb Layout (Top Side)

    Cambridge Audio Azur 340C CD Player AP13637/4 Mains PCB Layout (Top Side)

  • Page 14: Mains Pcb Layout (Bottom Side)

    Cambridge Audio Azur 340C CD Player AP13637/4 Mains PCB Layout (Bottom Side)

  • Page 15: Servo Pcb Schematic

    Cambridge Audio Azur 340C CD Player REMOTE REMOTE PWR DET RESET CONTROL KEYS SEG18 SEG17 SEG16 SEG15 SEG14 SEG13 SEG12 27R 1W SEG11 SEG10 SEG9 SEG8 SEG7 8550 SEG6 8550 470R 470R SEG5 SEG4 CLOSE OPEN +5VDD DRAW DRIVE SEG3...

  • Page 16: Servo Pcb Schematic (Power Supply)

    Cambridge Audio Azur 340C CD Player CN21 14.5V FP DIS 100nF 120R 0.5W 100nF IN4004 14.5V IN4004 CN19 7808 7805 RL1:A T2AL AC IN IN4004 IN4004 IN4004 3300uF 25V 470uF 16V 100nF 100nF 470uF 16V 100nF 100nF 100nF 100nF 8050...

  • Page 17: Servo Pcb Layout (Top Side)

    Cambridge Audio Azur 340C CD Player AP12927/7 Servo PCB Layout (Top Side)

  • Page 18: Servo Pcb Layout (Bottom Side)

    Cambridge Audio Azur 340C CD Player AP12927/7 Servo PCB Layout (Bottom Side)

  • Page 19: Front Panel Pcb Bom

    Cambridge Audio Azur 340C Front Panel PCB AP13578/3 AP PART NO. VALUE DESCRIPTION QTY COMPONENT IDENT NOTES RESISTORS Resistor 0.25W 1% metal film 330R Resistor 0.25W 1% metal film 820R Resistor 0.25W 1% metal film R1, R14 Resistor 0.25W 1% metal film Resistor 0.25W 1% metal film...

  • Page 20: Output Pcb Bom

    Cambridge Azur 340C Output PCB Assembly BOM AP14647/4 AP PART NO. VALUE DESCRIPTION COMPONENT IDENT RESISTORS 0.25 W Metal Film Resistor 0.25 W Metal Film Resistor 0.25 W Metal Film Resistor 100R 0.25 W Metal Film Resistor 430R 0.25 W Metal Film Resistor...

  • Page 21: Main Assembly Bom

    Cambridge Azur 340C CD Player Main Assembly BOM (Silver UK) AP15162/2 AP DRAWING AP PART NO DESCRIPTION NOTES AP12735/5 Bottom Panel PY531 - Black AP12652/2 Azur Foot Moulding Position In Place on Bottom Panel PY541 Silver AP12883/3 PY544 Azur Foot Pad...

  • Page 22: Main Assembly Bom

    Cambridge Azur 340C CD Player Main Assembly BOM (Silver UK) AP15162/2 AP DRAWING AP PART NO DESCRIPTION NOTES PY515 Black M2.6 X 6 C/S Torx Machine Screw To Affix Top Panel to plastic Inserts, Side, Rear and Front Panel PY516 Silver...
  • Page 23 Cambridge Azur 340C CD Servo PCB Assembly BOM AP14776/3 AP PART NO. VALUE DESCRIPTION COMPONENT IDENT RESISTORS 0.125 W Metal Film Resistor 0.25 W Metal Film Resistor 1 W Carbon Resistor 0.125 W Metal Film Resistor R10, R68, R69 100R 0.125 W Metal Film Resistor...
  • Page 24 Cambridge Azur 340C CD Servo PCB Assembly BOM AP14776/3 AP PART NO. VALUE DESCRIPTION COMPONENT IDENT 25V Electrolytic C32, C39, C40 3300u 25V Electrolytic SEMICONDUCTORS PY474 TA2153FN TOSHIBA RF Amplifier PY475 TC9462F TOSHIBA Digital Servo-chip Processor TOSHCDMCU YANION Supplier PY473...
  • Page 25 Cambridge Audio Azur 340C CD Player IC Pin Layout Details Control PCB PIC16C505 (U3) TSOP18 (U2)
  • Page 26 Output PCB APTX179AT (U1) 74HC14 (U2)

  • Page 27: Servo Pcb Bom

    SERVO PCB TA2153FN (U1) TC9462F (U2)
  • Page 28 TLCS-870 MCU (U3) TA2092 (U6)
  • Page 29 7808 (U7) 7805 (U8) TS922IN (U4) CS4338 (U5)

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