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Issue date: February 2013
Service Manual
Azur 752BD Universal Upsampling Blu-ray, DVD & CD player
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
2
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
human body.
1.2 Precautions
1.2.1 Precautions for laser head
1 Do not stare at laser head directly for laser emission will occur when laser head is working
which will hurt your eyes!
2 Do not use wiping water or alcohol to clean laser head ,and you may use cotton swab.
1.2.2 About placement position
1 Never place player in positions with high temperature and humidity.
2 Avoid placing near high magnetic fields , such as loudspeaker or magnet .
3 Positions for placement should best able and secure.
1.2.3 Electro static precautions
1 Maintenance facility and working table must be earthed.
2 Maintenance man must wear electrostatic ring, and he can use antistatic gloves instead when
electrostatic ring is unavailable or inconvenient to use.
3 When repairing accessories, antistatic bag is required to pack the accessory.
1.2.4 Precautions for welding
1 The soldering tin wire must satisfy the local environmental protection requirement.
2 Welding temperature must not above 350
1.3 Required device for maintenance
Digital oscillograph ( 100MHZ) TV set(1080p) receiver support HDMI SMD rework station
Multimeter Soldering iron Pointed-pinchers Cutting nippers Forceps Electric screw driver
Terminals connecting cord Test disc etc.
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.
3
-1-
Chapter Two Block diagram and version of player
2.1.1 752BD FRAME SCHEMATIC DIAGRAM
MHL/HDMI OPTICAL/COAXIAL
INPUT BOARD INPUT BOARD
MBDP752-0 BBDP752-0
GND
HDMI5V_IN_VBUS
MHL/HDMI IN
GND 20PIN
USBP1
USBM1
USB5V
Servo port
3.3V_STB CN9 CN26 CN14 Mcu port
18
IR_FP CN21
17
STBY_KEY
Front Panel Board
16
15
OPEN/CLOSE_KEY NAND FLASH
GND CN6 port
14
PLAY_LEFT_RIGHT
13
UP_DOWN
12 TILT-
3D INDICATE
11 TILT+
GND
10 CN2 TR-
4K_2K INDICATE TR+
9
VCC FR-
8
VCC FR+
7 CO_B+
VCC
6 CO_B-
GND
5 CO_A+
GND CO_A-
4
VDATA VDACO#
3
VSTB AUX1
2 INH
VCLK
BD LOADER KEM - 480 ( S ONY ) +TO H EI
1 INB
CN11
ING
INA
VCC_PDIC
MAIN BOARD
RELAY_ON
2BDP752-0
15 IND
GND GND
14
5BDP751-0
Power Board
+15V_IN DRFO+
13
GND DRFO-
12 GND
GND
11 RFO+
GND RFO-
10
+5V_STB GND
CN1
9
INC
.. INE
+5V_STB
1 VHAVC
INF
GND
GND
A3.3V
+12VF
GND
+15V
GND
GND
-15V
GND
VCC_LD
GND
VCC_BD_LD
VCC GND
GND LDD_SDIO_OPU
AOMCLK LDD_CLK_OPU
LDD_SEN_OPU
AOBCK GIO7
AOLRCK TEST_V
GND GIO4
AOSDATA0 GIO5
Audio DAC Board
AOSDATA1 GIO6
7BDP7 52- 0
GND
AOSDATA2
GND
AOSDATA3
GND TRAYIN
GND
CN12
AOSDATA4 TRAYOUT
CN17
AODATA5 LOAD+
SCL LOAD-
SDA
DSD_PCM# A-
A+
GND B-
CN18
GND B+
USB1/2
IR IN
COAXIAL
RS-232C
OPTCAL
DIAG.
HDMI2
LAN
HDMI IN
HDMI1
STBY_EN GND
AU_RESET U
AU_AMUTE_MCU V
W
VCC5_STB
COMMON
-2-
4
5
Azur 752BD
Front panel 1st Digital AudioI2S DAC board
output
Front panel USB AOMCLK
USB Ports
I2S_BCLK_AOBCK
MHL/HDMI MHL/HDMI IN RX1_0+/- RX1_1+/- I2S_LRCK_AOLRCK CN12 TO AUDIO
Sil1292
IN 1st BOARD
RX1-2+/- RX1_C+/- I2S_DATA_AOSDATAO
I2S/DS Audio
IR_MCU AOSDATA1#
D Board
AOSDATA2# Audio
Key in AOMCLK AOBCK
PANEL KEY AOSDATA3# output AOSDATA4 AOLRCK
I2S_DATA_AOSDATA4 To DAC A
12MHZ SDA SCL
Clock circuit MCU AOSDATA5#
RS232 MCU
ports FE_RESET Reset REAR PANEL
UARXD UATXD Reset circuit
circuit
Service Manual
IR_MCU TD+ TD- RD+ RD-
LAN
IR_FP
HDMI IN
2 . 2 . 1 752BD OVERALL BLOCK DIAGRAM
IR INPUT IR-IN RX2_0+/- RX2_1+/- HDMI
ESD circuit
Module RX2-2+/- RX2_C+/- IN
COXIAL
Rear panel USBM0 USBP0 USBM1 USBP1 ASPDIF COXIAL
Digital audio
USB Ports
Output
Mt8580 ASPDIF
-3-
25MHZ CCIR_OUT_C0~C7 circuit OPTICAL
Clock circuit MT8530
HDMI1 HDMI output CCIR_OUT_Y0~Y7 V_CBS CVBS_OUT
Video filter Diagnostic
Terminal
Q3 L16 etc port
Marvell
ESD AO2I2SD0~D3
88DE2755
Circuit AO2I2S BCK MCLK LRCK
RF&Servo signal
DDR_DATA TO BD loader
K4B1G1646 MEM_ADD Step motor
Sa-act BD 50P SONY
G-BCH9
CN11 Loader
DDR III
KEM-
3 Axis actuator 460 or
HDMI TX1- TX1+ TX2- TX2+ TX0- TX0+ TXC- TXC+
KEM-
Terminal Servo driver signal 480
HDMI output TPIC Spindle/sled motor Spindle/sled motor
P9
2050
REAR PANEL ESD 27MHZ CN18
Circuit Clock circuit Open/close LOAD+ LOAD-
K4B1G1646G-BCH9 Driver P5 TRAYIN# TRAYOUT# Loader
DDR 1GX CN17 Frame
K9K8G08U0D-SCB0 RESET# Reset
NAND FLASH 1G circuit LOADER
2.3.2 752BD interior image
AC socket AUDIO BOARD Rear cover base cover
Loader component
POWER BOARD Front panel component MAIN BOARD (OLNY 480)
-4-
6
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
-5-
7
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
Decoding and servo processing circuit
SA_CO_B-
SA_CO_B+
SA_CO_A+
SA_CO_A-
DRIVER_CS_IN
BD pick up
component TR+ DRIVER_SCLK_IN
Mt8580
TR-
FR+ DRIVER_DATA_IN
FR-
SERVO DRIVER
TPIC2050
TIL+ DRIVER_DATA_OUT
TIL-
XRESER_IN
U
Spindle V
motor W
COMMON
LOAD+
SLED_B+ LOAD-
SLED_B-
Feed SLED_A+ Tray open/close motor
motor SLED_A-
NAND
FLASH
Figure 3.1.1.1 Block diagram of servo circuit
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.
Common 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.
8
Service Manual Azur 752BD
Section 2 Partial introduction to Main board system
3.2.1. Block diagram of decoding circuit:
USB port Servo drive
circuit BD Loader
XRESET
NAND NFD0~7
Audio output used for 2I2s and
FLASH DSD firmat TO Sil9334
DDR III DQ0~15
U105 U105 RD0~13 1st digital audio I2S output
U203 U204 To audio process board
Clock Circuit 27MHZ MT 8580 HDMI Output
27MHZ X2
Digital Video output to
MARVELL 88DE2755
FE_RESET
Reset
Circuit RESET
DIAG. output
SDA VDATA
SCL VSTB
VCLK
IR_FP
Reset Panel
MCU Circuit
Circuit KEY IN board
3.2.1.1 Block diagram of decode and peripheral circuit
Decoding chip: This player adopts MT8580 as main chip, which includes video decoding , a udio processing , memory controlle r,
HDMI transmitter, servo processing , external lin terface and other modules. It supports 2 channel HD MPEG-2/AVC/VC-1 video
decoding ,2 channel multi-format audio decoding , motion-adaptive and e dge-preserving de-interlacing , 2D to 3D
conversion, 4K up-scalin g, dual HDMI outputs, dual HDMI inputs and three USB 2.0 high speed ports,
Supported disc formats include BDMV, BDLIVE , SACD , DVD-AUDIO , CD , etc. For detaile d features, please refer to IC
specifications.
9
-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
Key Features:
.
HD H.264/ MPEG-2/ AVC/VC-1 video decode HDMI 1. 4 output
148MHz/12- bit, 4 CH TV Encoder
Dual-channel multi-format audio decode
HDMI 1. 4 Receiver
Motion-adaptive, edge-preserving de-interlacing
3D video output
4185 DMIPS Cortex-A9 CPU x 2
Ethernet
Mali-400 MP USB 2. 0
10
+5V_STB VCC DC-DC
V1 TPS54325 1.1V
PWPR 88DE2755
AO4468 STBY_MCU PWR_EN3
U1
DC-DC
U5 U15 MCU TPS54325 1.2V MT8580&
TPS62203 WT61P80 PWR_EN1 PWPR SIL1292
DBVT 6 U3
3.3V_STB
DC-DC
PANEL TPS54325 1.5V MT8580&
RS232
IR PWPR DDRIII
U36
KEY U8
V8/Q29 1.5V_MVL#
-9-
+5V_STB Q30
3.2.4 .Main board power supply circuit
DC-DC PWR_EN4
USB 3.3V MT8580&
HDMI CEC Panel TPS54325
Power FLASH
IR-IN board PWPR
u24u14u27 SIL1292
U7
3.2.4.1.1
VCC#
Service Manual
3.3V_MVL AP1117EL 1.8V_MVL#
U2 V11 Sil1292 V4/Q7
LOADER -ADJ
3.2.4 .1 Block diagram of power supply system of main board
TPIC2050 AO4468
PWR_EN2
+5V_STB 8V
PWR_EN2
U26 U30
POWER
3.2.4.1 Block diagram of voltage stabilizing circuit, shown in figure 3.2.2.1:
BAJ2DDO BAJ2DDO
SUPPLY +15V_IN 12V
WHFP WHFP
Azur 752BD
11
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
U4 INPUT BOARD
SN74CBT3257 OPTICAL_IN OPTICAL
OPTICAL_IN_ARC_ INPUT
MVL_OPTICAL_IN
ARC_MVL_OPTICAL_IN
AO2SI2S_BCK HDMI2_TX2+
AO2SI2S_LRCK HDMI2_TX2-
AO2SI2SD0(MLR) HDMI2_TX1+
HDMI1
AO2SI2SD1(SURLR) HDMI2_TX1-
U33
AO2SI2SD2(CSW) HDMI2_TX0+
AO2SI2SD3(SURBLR) 88DE2755 HDMI2_TX0-
SPDIF2 HDMI2_TXC+
Mt8580
OPTICAL_IN_ARC_MVL HDMI2_TXC-
SPDIF_OUT
COXIAL
OPTICAL
TX2+/TX2-/TX1+/TX1-/TX0+/TX0-/TXC+/TXC-
HDMI2
MCLK_MTK
SBCLK_DAC
U17/U20/
74LCXH162244MTD
DATA_LF_RF_MTK SLRCK_DSP
SLRCK_DAC U23/U23/
DATA_LS_RS_MTK SBCLK_DSP
SDATA_LF_RF_DAC U26
BCLK_MTK
DSP SDATA,_L_RDOWNMIX_ DSP
LRCK_MTK SDATA_LS_RS_DAC D/A
ADSP
U6
SDATA_LSB_RSB_DSP
DATA_C_SW_MTK
SDATA_C_SW_DAC converter
DATA_LSB_RSB_MTK -21261 SDATA_C_SW_DSP
DATA_LDOWNMIX_RD SDATA_LS_RS_DSP SDATA_LSB_RSB_DAC
OWNMIX_MTK SDATA_LF_RF_DSP SDATA_LDOWNMIX_RDOWNMIX_DAC
Wm8740
DAC1~DAC5_MCLK
LEFT_DOWNMIX
RIGHT_DOWNMIX U18
LEFT_FRONT U19
Audio output terminal
RIGHT_FRONT U21
CENTER U22
SW U24
LS U25
RS U27
SBL U28
Audio SBR U30
processing
board U31
Output Amplifier
Figure 3.3.1.1 Block diagram of audio signal
12
-10-
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:
Analog V_CVBS
Diagnostic
video port
HDMI2_Tx0- HDMI2_Tx0-
HDMI2_ TX0+ HDMI2_ TX0+
HDMI OUT2
HDMI2_ Tx1- HDMI2_ Tx1-
U17
HDMI2_ TX1+ HDMI2_ TX1+
U18
HDMI2_ Tx2- ESD HDMI2_ Tx2-
HDMI2_ Tx2+ Circuit HDMI2_ Tx2+
HDMI2_ TXC+ HDMI2_ TXC+
Mt8580
HDMI2_ TXC- HDMI2_ TXC-
CCIR_OUT_C[0:7] HDMI1_Tx0-
HDMI1_Tx0-
CCIR_OUT_Y[0:7] HDMI1_TX0+
HDMI1_TX0+
HDMI1_Tx1-
U46 HDMI1_Tx1-
HDMI OUT1
U33
HDMI1_TX1+ U45 HDMI1_TX1+
HDMI1_Tx2-
CCIR_OUT_VS 88DE2755 HDMI1_Tx2-
HDMI1_Tx2+ ESD HDMI1_Tx2+
CCIR_OUT_HS
Dig i t a l v i d e o HDMI1_TXC+ Circuit
CCIR_OUT_CLK HDMI1_TXC+
out p u t HDMI1_TXC-
CCIR_OUT_DE HDMI1_TXC-
HDMI_Rx2_2+ HDMI_Rx2_2+
HDMI_ Rx2_2- HDMI_ Rx2_2-
HDMI_ Rx2_1+ HDMI_ Rx2_1+
U19
HDMI
HDMI IN
HDMI_ Rx2_1- U20 HDMI_ Rx2_1-
RX PORT 2 HDMI_ Rx2_0+ HDMI_ Rx2_0+
ESD
HDMI_ Rx2_0- HDMI_ Rx2_0-
Circuit
HDMI_ Rx2_C+ HDMI_ Rx2_C+
HDMI_ Rx2_C- HDMI_ Rx2_C-
MHL_HDMI_Rx_2+ RXCK+ RXCK+
MHL_HDMI_Rx_2- RXCK- RXCK-
MHL/HDMI IN
MHL_HDMI_Rx_1+ RXDO- MHL- RXDO- MHL-
MHL_HDMI_Rx_1- U11 RXDO+ MHL+ RXDO+ MHL+
BTB
ESD
MHL_HDMI_Rx_0+ Sil1292 RXD1+ RXD1+ CABLE
Circuit
MHL_HDMI_Rx_0- RXD1- RXD1-
MHL_HDMI_Rx_C+ RXD2+ RXD2+
MHL_HDMI_Rx_C- RXD2- RXD2-
Front panel
Figure 3.4.1.1 Block diagram of video circuit
13
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.
HDMI output: The digital video interface of MT8580 transmits digital video signal to
MARVELL88DE2755 HD video processing chip for format conversion, in which the digital video signal
is converted into 36 bit digital video signal. Then the parallel 36bit video signal is encoded into TMDS
signal, and in the mean time digital audio signal output from Mt8530 is also endoded into TMDS.
88DE2755 also has HDCP encryptor built in. The TMDS signal output from 88DE2755 is transmitted to
HDMI 1 for output. For protection of HDMI 1 port, the circuit also has anti-ESD IC included. For HDMI 2,
video signal is processed into HDMI signal by the MTDS circuit built in Mt8580 and output via HDMI 2
output port.
Video output circuit issues mainly include no video output and output video signal distortion.
HDMI/MHL input
Mt8580 incorporates two sets of HDMI input; one HDMI input port locates on the rear panel and
goes directly into MT8580's HDMI input port. For compatibility with MHL port of mobile device, a
MHL/HDMI conversion IC (sil1292) is added to the other HDMI input port (on the front panel).
Mobile High-Definition Link (MHL) is a proposed industry standard for a mobile audio/video
interface for directly connecting mobile phones and other portable consumer electronics (CE) devices to
high-definition televisions (HDTVs) and displays. The MHL standard features a single cable with a low
pin-count interface able to support up to 1080p high-definition (HD) video and digital audio while
simultaneously charging the connected device
New features of HDMI 1.4
1. HDMI Ethernet Channel (HEC). It allows a 100 Mbit/s Ethernet connection between two HDMI
connected devices so they can share an Internet connection. This feature hasn't been implemented on
BDP103.
2. Audio Return Channel (ARC). BDP103 has implemented this feature.
3. HDMI 3D. BDP103 has enabled this feature as well as 2D-to-3D conversion.
4. Higher resolution support. HDMI 1.4 increases maximum resolution support to 4K