Cambridge Audio Azur 752BD Service Manual
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Cambridge Audio Azur 752BD Service Manual

Universal upsampling blu-ray, dvd & cd player
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Issue date: February 2013
Service Manual
Azur 752BD Universal Upsampling Blu-ray, DVD & CD player

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Summary of Contents for Cambridge Audio Azur 752BD

  • Page 1 Issue date: February 2013 Service Manual Azur 752BD Universal Upsampling Blu-ray, DVD & CD player...

  • Page 2: Table Of Contents

    Table of ConTenTs Chapter 1, About Maintenance Chapter 2, Block Diagrams Interior Image Chapter 3, Function Module Schematics Servo Circuit Partial Introduction to Main Board System Decoding Chip Main Board Power Supply Circuit Audio Processing Circuit Video Processing Circuit Other Control Circuits of Main Board Panel and Button Control Circuits Troubleshooting Flowcharts and Cases Install Barcode...

  • Page 3: Chapter 1, About Maintenance

    Service Manual Azur 752BD Chapter One About Maintenance 1.1 Safety precautions 1.1.1 Power supply When maintenance personnel are repairing players ,he should pay special attention to the power board with ~100V-240V and DC154V-300V which will cause hurt and damage to persons! 1.1.2 When replacing accessories, please remove the power plug from socket to avoid any injures to...

  • Page 4: Chapter 2, Block Diagrams

    Chapter Two Block diagram and version of player 752BD FRAME SCHEMATIC DIAGRAM 2.1.1 MHL/HDMI OPTICAL/COAXIAL INPUT BOARD INPUT BOARD BBDP752-0 MBDP752-0 MHL/HDMI IN HDMI5V_IN_VBUS 20PIN USBP1 USBM1 Servo port USB5V CN14 CN26 3.3V_STB Mcu port CN21 IR_FP STBY_KEY NAND FLASH OPEN/CLOSE_KEY port PLAY_LEFT_RIGHT...
  • Page 5 Service Manual Azur 752BD 752BD OVERALL BLOCK DIAGRAM 2 .2 .1...

  • Page 6: Interior Image

    2.3.2 752BD interior image Rear cover base cover AC socket AUDIO BOARD Loader component Front panel component POWER BOARD MAIN BOARD (OLNY 480)

  • Page 7: Chapter 3, Function Module Schematics

    Service Manual Azur 752BD Chapter III Function module schematics Section 1 Loader assembly introduction Anti-dust cover Top spindle Disc tray Laser OPU Level1 vibration pad Weight balanced frame Level2 vibration pad Loader frame Loader support Damping spring...

  • Page 8: 3.1.1 Servo Circuit

    3.1.1 Servo circuit 3.1.1.1 Servo circuit overview: 752BD player adopts SONY 480 loader and MT8580 decoding scheme. And its servo circuit is mainly composed of decoding chip Mt8580, driver IC tpic2050 and other components. Please refer to Figure 3.1.1.1 below: A B C D E F G H DVDRFO BDRFO SA_CO_B- SA_CO_B+...

  • Page 9: Partial Introduction To Main Board System

    Service Manual Azur 752BD Section 2 Partial introduction to Main board system Block diagram of decoding circuit: 3.2.1. ； Servo drive USB port BD Loader circuit XRESET NAND NFD0~7 Audio output used for 2I2s and FLASH DSD firmat TO Sil9334...

  • Page 10: Decoding Chip

    Decoding chip: Mt8580 mainly includes Video Decode, Audio Processing, Memory Controller, HDMI transmitter, servo Processing, External Interface, HDMI Receiver modules. Mt8580 can support BD, DVD, and CD playback, including the latest BD-ROM formats, such as BD-Live and BonusView. It features AVC, VC1, and MPEG-2 video decoders that can decompress full high- definition video streams.

  • Page 11: 3.2.4 .Main Board Power Supply Circuit

    Service Manual Azur 752BD 3.2.4 .Main board power supply circuit 3.2.4.1 Block diagram of voltage stabilizing circuit, shown in figure 3.2.2.1: 3.2.4.1.1 主 板 供电 系 统 框 图 3.2.4 .1 Block diagram of power supply system of main board...

  • Page 12: Audio Processing Circuit

    Section Three Audio processing circuit 3.3.1 Block diagram of audio signal is shown in figure 3.3.1.1: COAXIAL_IN Decoding COXIAL COAXIAL_IN INPUT chip USBDAC_CIAXIAL_IN COAXIAL/OPTICAL INPUT BOARD OPTICAL_IN SN74CBT3257 OPTICAL OPTICAL_IN_ARC_ INPUT MVL_OPTICAL_IN ARC_MVL_OPTICAL_IN AO2SI2S_BCK HDMI2_TX2+ AO2SI2S_LRCK HDMI2_TX2- AO2SI2SD0(MLR) HDMI2_TX1+ AO2SI2SD1(SURLR) HDMI2_TX1- AO2SI2SD2(CSW) HDMI2_TX0+...

  • Page 13: Video Processing Circuit

    Service Manual Azur 752BD Section IV Video processing circuit 3.4.1 Block diagram of video circuit is shown in figure 3.4.1.1: V_CVBS A n a l o g Diagnostic v i d e o port HDMI2_Tx0- HDMI2_Tx0- HDMI2_ TX0+ HDMI2_ TX0+...
  • Page 14 Video output Video output signals are classified into 3 types: Analog output: Video signal is converted into analog video signal (CVBS) by the DAC built in Mt8580, then processed by video amplification and filter cirucits, output through the diagnostic port to a display with composite video input port for troubleshooting.

  • Page 15: Other Control Circuits Of Main Board

    Service Manual Azur 752BD Chapter V Other circuits of main board Chapter V Other control circuits of main baord 3.5.1 Block diagram of external input interface as shown in 3.5.1.1: UARXD3 UARXD_RP RS232 TRSF322 PORT UATXD3 1E1PWR CN20 UATXD_RP MCU_ISP_SCL...

  • Page 16: Panel And Button Control Circuits

    Section VI Panel and button control circuits 3.6.1: Block diagram of panel circuit: FLAC1 FLAC2 power supply circuit GRID1~12 SEG1~35 FL-24V VDATA Reset REST# VSTB Pt6302 circuit Mt8580 VCLK Q1C12 VFD_OFF MCU_ISP_SDA KEY_L/P/U KEY_R_D MCU_ISP_SCL Press OPEN_KEY STBY_KEY button IR_FP_IN IR_MCU Receiver module...

  • Page 17: Troubleshooting Flowcharts And Cases

    Service Manual Azur 752BD Chapter Four Troubleshooting flow chart and cases Section One Troubleshooting flow chart Troubleshooting flow chart of Power Not On Player not power on Check Check Replace whether AC whether standby power cord and replace AC socket...
  • Page 18 Troubleshooting flow chart of tray open/close, disc reading, play, remote control “ ” Replace loader component Tray opening/ Replace main board and see whether tray closing issue open is normal Check Check whether frame and whether loader motor are normal, and frame is stuck check whether the belt is off Replace loader...
  • Page 19 Service Manual Azur 752BD Troubleshooting flow chart of audio and panel display troubles “ ” Whether audio outputs are digital audio output Replace main board Audio issue not normal is normal Replace Upgrade audio board software and Replace main board or...

  • Page 20: Install Barcode

    Install Barcode Cn14 Blu-ray USB or MTK Tool Player Rs232 port Computer Two-dimensional scanner USB port Block diagram of barcode entry device connection Cn14 1. After replacing main board or loader assembly, it is required to reinstall barcode. Before the barcode is install , the main board and the loader should not be connected.
  • Page 21 Service Manual Azur 752BD 2. Activate the predetermined Rpower_2.9.63(KEM480) software on PC. Set up the software according to device model. 1) Select the approriate COM port according to the connecting port of the MTK tool. 2) Select “RPOWER 8560” for “Command”. Select the loader employed by the device ( SONY 480).
  • Page 22 4. The Barcode will be displayed on the PC software interface after successfully scanned.The barcode consists of 64 digits and alphabets. 5. Select ‘WRITE, and after the barcode input is successfully completed, the PASS light will turn green and 5. After the barcode input is successfully completed, the PASS light will turn green and last for a few seconds and logs will be displayed.
  • Page 23 Service Manual Azur 752BD 6. The PASS light will go black again after the few seconds, indicating the process is completed. 7. Reinstall the flat cable of the loader properly, power the device on and test it. Input the barcode again, the tray open/close automatically, and a self-detection will be conducted.

  • Page 24: Precautions For Player Disassembly And Reassembly

    Precaut tions for r Player r Disasse embly a and Reas ssembly Some comp onents cann ot be directly y disassemb led or reasse embled due t to the structu ural design. P Please follow appropriate procedures. Main to ools required d for disassem mbly 1.

  • Page 25: Internal Structure Of Unit

    Service Manual Azur 752BD 2. Intern nal structu ure of the u unit Audio boa rd  Main b board  ader compon nent  wer board  Fron nt panel comp ponent  Top View 3. Repla ce the loa ader assem mbly 3.1 Loa ader assemb ly replacing f...
  • Page 26 3.3 Then n disconnect the three fla t cables con necting the m main board to o the loader assembly. D Do not pull off the fla at cable direc ctly. Open th he cover of th he socket an d flip it up by y 90 degrees s, and then th...

  • Page 27: Remove The Audio Board

    Service Manual Azur 752BD 4 Remov ve the aud dio board Hindered d by the load er and the re ear panel, the e audio boar rd cannot be removed dir rectly. Remo ve the loade or the rea ar panel befo...
  • Page 28 4.3 Use the electric screwdriver to remove t the screws (6 6pcs PM 3× 7H) holding the 7.1ch au udio board in posi ition inside th he device. audio boa ard removal c completed 4.4 Prec cautions for a audio board disassembly y and reasse embly...

  • Page 29: Replace The Main Board

    Service Manual Azur 752BD 5. Replac ce the mai in board 5.1 Main board replac cement flow Remo ove the top c cover——Rem move the loa ader assemb bly——Remo ve the audio o board——D Disconnect al the fla at cables con...
  • Page 30 5.5 Use the electric s screwdriver t to remove all l the screws holding the m main board a and the outp ut terminals on th he main boar rd. 4 different t types of scr rews used to o hold the ma ain board, ta ke care not t to confuse...

  • Page 31: Replace The Front Panel Assembly

    Service Manual Azur 752BD 6. Replac ce the fron nt panel as ssembly 6.1 Front p panel assem mbly replacem ment flow: move the top cover——Ta ake off the tra ay door—— Disconnect a all the flat ca ables connec...

  • Page 32: Replace The Power Board

    7. Replac ce the pow wer board 7.1 Pow wer board rep placement flo move the top cover——R Remove the s screws holdin ng the power r board—— D Disconnect t the cables nected to the e power boar rd。 7.2 Rem move the scr rews holding...

  • Page 33: Circuit Diagrams

    Service Manual Azur 752BD circuit diagram AUDIO BOARD -31-...
  • Page 34 -32-...
  • Page 35 Service Manual Azur 752BD -33-...
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  • Page 37 Service Manual Azur 752BD -35-...
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  • Page 39 Service Manual Azur 752BD...
  • Page 40 PANEL BOARD -38-...
  • Page 41 Service Manual Azur 752BD OPTICAL/COAXIAL INPUT BOARD -39-...
  • Page 42 MHL/HDMI INPUT BOARD -40-...

  • Page 43: Parts Table

    Service Manual Azur 752BD Parts Table Service part number Factory ref Description PB133 49440858 752BD Power Board PB134 49450388 752BD DAC Board PB135 49450398 752BD Decode Board (Region A) PB136 49450398 752BD Decode Board (Region B) PB137 49450428 752BD Audio Input Board...

  • Page 44: Packing Bill Of Materials

    51977508 User manual BDP752 ENGLISH$ For 752BD(CU)&752BD(EU) German/Russian/Dutch 51977518 User manual Only for 752BD(EU) danish 51978118 Quick Start Guide BDP752$ Protective film for front panel 52399328 Protective film BDP-650(EU)$ glass 54727738 WiFi Dongle A103(Cambridge Audio)$ 54728118 Remote Controller BDP752 BLACK -41-...

  • Page 45: Assembly Bill Of Materials

    Service Manual Azur 752BD Assembly Bill of Materials Product model：752BD black(MT8580+SONY 480) Material Material name Specification Remark Code ntity 2-core Y-style SS-7BA cable 18701198 AC socket 160 switch cord$ Connecting power board and 21231548 Cable 15P290 2.0 T2(BLACK)24#$ decoding board...
  • Page 46 Assembly Bill of Materials Product model：752BD black(MT8580+SONY 480) Material Material name Specification Remark Code ntity 2-core Y-style SS-7BA cable 20 42103058 Machine screw HM 3×12 Gold-plated M3-DRL$ 2 for RS232/back panel 18701198 AC socket 160 switch cord$ 21 42103568 Machine screw PWM 4×5×10H black$ 4 for top cover/base cover Connecting power board and...

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