Cambridge Audio Azur 752BD Manuel utilisateur

Service Manual

Azur 752BD Universal Upsampling Blu-ray, DVD & CD player

Issue date: February 2013

TABLE OF CONTENTS

Chapter 1, About Maintenance 3

Chapter 2, Block Diagrams 4

Interior Image 6

Chapter 3, Function Module Schematics 7

Servo Circuit 8

Partial Introduction to Main Board System 9

Decoding Chip 10

Main Board Power Supply Circuit 11

Audio Processing Circuit 12

Video Processing Circuit 13

Other Control Circuits of Main Board 15

Panel and Button Control Circuits 16

Troubleshooting Flowcharts and Cases 17

Install Barcode 20

Precautions for Player Disassembly and Reassembly 24

Internal Structure of Unit 25

Remove the Audio Board 27

Replace the Main Board 29

Replace the Front Panel Assembly 31

Replace the Power Board 32

Circuit Diagrams 33

Parts Table 43

Packing Bill of Materials 44

Assembly Bill of Materials 45

Azur 752BDService Manual

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

human body.

1.2 Precautions

1.2.1 Precautions for laser head

1ǃDo not stare at laser head directly for laser emission will occur when laser head is working

which will hurt your eyes!

2ǃDo not use wiping water or alcohol to clean laser head ,and you may use cotton swab.

1.2.2 About placement position

1ǃNever place player in positions with high temperature and humidity.

2ǃAvoid placing near high magnetic fields , such as loudspeaker or magnet .

3ǃPositions for placement should best able and secure.

1.2.3 Electro static precautions

1ǃMaintenance facility and working table must be earthed.

2ǃMaintenance man must wear electrostatic ring, and he can use antistatic gloves instead when

electrostatic ring is unavailable or inconvenient to use.

3ǃWhen repairing accessories, antistatic bag is required to pack the accessory.

1.2.4 Precautions for welding

1ǃThe soldering tin wire must satisfy the local environmental protection requirement.

2ǃWelding temperature must not above 350ć

1.3 Required device for maintenance

Digital oscillograph ( 100MHZ) ǃTV set(1080p)ˈreceiver˄support HDMI˅ǃSMD rework station

Multimeter ǃSoldering iron ǃPointed-pinchers ǃCutting nippers ǃForceps ǃElectric screw driver

Terminals connecting cord ǃTest disc etc.

-1-

Note: After replacing loader or main board,

please input BARCODE of the loader to main board again.

For input method, please refer to BARCODE input method on page 20.

-1-

7BDP752-0

Audio DAC Board

2BDP752-0

MAIN BOARD

2.1.1 752BD FRAME SCHEMATIC DIAGRAM

VCC

GND

AOMCLK

AOBCK

AOLRCK

GND

AOSDATA0

AOSDATA1

AOSDATA2

AOSDATA3

GND

AOSDATA4

AODATA5

SCL

SDA

DSD_PCM#

GND

STBY_EN

AU_RESET

AU_AMUTE_MCU

VCC5_STB

TILT-

TILT+

TR-

TR+

FR-

FR+

CO_B+

CO_B-

CO_A+

CO_A-

VDACO#

AUX1

INH

INB

ING

INA

VCC_PDIC

IND

GND

DRFO+

DRFO-

GND

RFO+

RFO-

GND

INC

INE

VHAVC

INF

GND

A3.3V

GND

VCC_LD

GND

VCC_BD_LD

GND

LDD_SDIO_OPU

LDD_CLK_OPU

LDD_SEN_OPU

GIO7

TEST_V

GIO4

GIO5

GIO6

GND

TRAYIN

GND

TRAYOUT

LOAD+

LOAD-

A-

A+

B-

B+

GND

COMMON

5BDP751-0

Power Board

RELAY_ON

GND

+15V_IN

GND

+5V_STB

-15V

GND

+15V

GND

+12VF

BD LOADER KEM-480 (SONY)+TOHEI

Front Panel Board

3.3V_STB

IR_FP

STBY_KEY

OPEN/CLOSE_KEY

GND

PLAY_LEFT_RIGHT

UP_DOWN

3D INDICATE

GND

4K_2K INDICATE

VCC

GND

VDATA

VSTB

VCLK

CN12

CN1

CN17 CN18

CN11

LAN

HDMI2

DIAG.

IR IN

USB1/2

HDMI IN

HDMI1

OPTCAL

RS-232C

Chapter Two Block diagram and version of player

MHL/HDMI

INPUT BOARD

MBDP752-0

GND

HDMI5V_IN_VBUS

GND

USBP1

USBM1

USB5V

MHL/HDMI IN

CN9

20PIN

CN26

CN2

Servo port

Mcu port

CN14 CN21

COAXIAL

NAND FLASH

port

CN6

OPTICAL/COAXIAL

INPUT BOARD

BBDP752-0

-2-

Azur 752BDService Manual

2.2.1 752BD OVERALL BLOCK DIAGRAM

MT8530

1st Digital Audio（I2S）

output

HDMI output

AOMCLK

I2S_BCLK_AOBCK

I2S_LRCK_AOLRCK

I2S_DATA_AOSDATAO

AOSDATA1#

AOSDATA2#

AOSDATA3#

I2S_DATA_AOSDATA4

AOSDATA5#

V_CBS

TXC- TXC+TX0- TX0+TX1- TX1+ TX2- TX2+

CN12

1st

I2S/DS

Audio

output

To DAC

HDMI

Terminal

Video filter

Q3 L16 etc

Diagnostic

port

Audio

Board

DAC board

Digital audio

Output

circuit

ASPDIF COXIAL

OPTICAL

Rear panel

USB Ports

Front panel

USB Ports

Sil1292

IR INPUT IR-IN

Module

MCU

PANEL KEY

LAN

RS232

ports

K4B1G1646G-BCH9

DDRⅡ1GX４

K9K8G08U0D-SCB0

NAND FLASH 1G

K4B1G1646

G-BCH9

DDR III

HDMI1

Terminal

TPIC

2050

50P

CN11

CN18

SONY

Loader

KEM-

460 or

KEM-

480

CN17 Loader

Frame

Marvell

88DE2755

HDMI output CVBS_OUT

COXIAL

ASPDIF

TO AUDIO

BOARD

TO BD loader

Spindle/sled motor

3 Axis actuator

Open/close

Driver

RF&Servo signal

RESET#

USBM1 USBP1USBM0 USBP0

USB

IR_MCU

IR_FP

IR_MCU

SDA SCL

Key in

UARXD UATXD

TD+ TD- RD+ RD-

12MHZ

Clock circuit

27MHZ

Clock circuit

25MHZ

Clock circuit

DDR_DATA

MEM_ADD

CCIR_OUT_C0~C7

CCIR_OUT_Y0~Y7

AO2I2SD0~D3

AO2I2S BCK MCLK LRCK

AOMCLK AOBCK

AOSDATA4 AOLRCK

Spindle/sled motor

Step motor

Sa-act BD

Servo driver signal

HDMI IN

RX2_0+/- RX2_1+/-

RX2-2+/- RX2_C+/-

ESD circuit HDMI

ESD

Circuit

MHL/HDMI

RX1_0+/- RX1_1+/-

RX1-2+/- RX1_C+/-

MHL/HDMI IN

MCU

Reset circuit

Reset

circuit

ESD

Circuit LOAD+ LOAD-

TRAYIN# TRAYOUT#

LOADER

REAR PANEL

Front panel

FE_RESET Reset

circuit

Mt8580

-3-

2.3.2 752BD interior image

Loader component

MAIN BOARD (OLNY 480)

AUDIO BOARD

POWER BOARD

Rear cover

AC socket

Front panel component

base cover

-4-

Azur 752BDService Manual

Chapter III Function module schematics

Section 1 Loader assembly introduction

Disc tray

Laser OPU

Loader frame

Top spindle

Level1 vibration pad

Level2 vibration pad

Loader support

Damping spring

Weight balanced frame

Anti-dust cover

-5-

3.1.1.2 Operating principle of servo circuit:：

Servo circuit is mainly composed of pick up interface, servo drive, system control and signal

processing circuits and servo software (built in NAND FLASH) and other modules.

Servo drive circuit: servo drive circuit has one drive group. This group is composed of

U2(TPIC2050)and peripheral circuit which are used to drive spindle motor, focus coil, tracking coi and

feed motor. TPIC2050 has servo control circuit and drive circuit built in.

ommon

C servo circuit troubles:

1. Fail to open/close tray door.

2. Fail to load discs for loader driver error.

3. Keep displaying “loading”, “No disc” or “Unkown disc”.

4. Fail to view servo software version in setup menu, loader malfunction.

5. Fail to load disc for poor contact of flat cable that connects the loader.

A B C D E F G H DVDRFO BDRFO

TPIC2050

Mt8580

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:

SERVO DRIVER

TR+

TR-

FR+

FR-

TIL+

TIL-

COMMON

NAND

FLASH

LOAD+

LOAD-

SA_CO_B-

SA_CO_B+

SA_CO_A+

SA_CO_A-

SLED_B+

SLED_B-

SLED_A+

SLED_A-

DRIVER_CS_IN

DRIVER_SCLK_IN

DRIVER_DATA_IN

DRIVER_DATA_OUT

XRESER_IN

3.1.1 Servo circuit

3.1.1.1 Servo circuit overview:

Figure 3.1.1.1 Block diagram of servo circuit

BD pick up

component

Spindle

motor

Feed

motor

Decoding and servo processing circuit

Tray open/close motor

-6-

Azur 752BDService Manual

Section 2 Partial introduction to Main board system

3.2.1. ；Block diagram of decoding circuit:

NFD0~7

MT 8580

NAND

FLASH

Reset

Circuit

Clock Circuit

27MHZ X2

Panel

board

FE_RESET

DQ0~15

DDR III

U105 U105

U203 U204

RD0~13

MCU Circuit

Audio output used for 2I2s and

DSD firmat TO Sil9334

Digital Video output to

MARVELL 88DE2755

DIAG. output

1st digital audio I2S output

To audio process board

HDMI Output

IR_FP

KEY IN

VDATA

VSTB

VCLK

SDA

SCL

BD Loader

XRESET

RESET

27MHZ

Reset

Circuit

USB port Servo drive

circuit

3.2.1.1 Block diagram of decode and peripheral circuit

Decoding chip : This pla yer adopts MT8580 as main chip, whic h inclu des , a , ,

, , and other module s. It supports

,2 , e , 2D to 3D

conversion, 4 K up-scalin g, dual HDMI outputs, dual HDMI inputs and three USB 2.0 high speed ports,

Supported dis c formats in clu de , , , , , etc. For detaile d features, ple ase refer to IC

specificatio ns.

video decodin g udio processing memory controlle r

HDMI transmit ter servo processin g external lin terface 2 channel HD MPEG-2/AVC/VC-1 video

decoding channel multi-format audio decoding motion-adaptive and dge-preserving de-interlacing

BDMV BDLIVE SACD DVD-AUDIO CD

-7-

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. And for audio decoding, its multi-format decoder is capable of decoding Dolby

TrueHD and DTS-HD lossless audio.

MT8580 is fabricated with advanced silicon process and offers higher CPU performance and more

DRAM bandwidth. This SoC also includes a powerful graphics engine and a variety of peripherals,

including USB 2.0 ports. To support popular network applications, MT8580 also implements 10/100

Ethernet interface and support WLAN connection thru its USB port.

Besides the connectivity features, audio and video output quality and flexibility is another focus of state-

of-the-art Blu-ray devices. MT8580 embeds 4 channels of 148MHz/12-bit video DAC and also an HDMI

1.4 compliant transmitter for 2D/3D video output. And MT8580 also embeds an HDMI 1.4 Receiver for

video input. Its audio output via I2S, SPDIF and HDMI can be configured independently. Moreover,

MT8580 also supports audio bit stream input from HDMI and SPDIF, which is a key function in the growing

Blu-ray HTiB segment

HDMI 1.4 output

148MHz/12-bit, 4 CH TV Encoder

HDMI 1.4 Receiver

3D video output

Ethernet

USB 2.0

Key Features:

󼰥 HD H.264/MPEG-2/AVC/VC-1 video decode

󼰥 Dual-channel multi-format audio decode

󼰥 Motion-adaptive, edge-preserving de-interlacing

󼰥 4185 DMIPS Cortex-A9 CPU x 2

󼰥 Mali-400 MP

-8-

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