Skyworth 7M02B User manual

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SERVICE MANUAL
Design and specifications are subject to change without prior notice. (Only for Reference)
Description: SERVICE MANUAL 7M02B
Version:V0.01
Prepared By: Lihuanghui Date: 2017-07-20
Checked By: Date:
Approved By: Date:

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CONTENT
Revision History..........................................................................................................................................2
1. Technical Specification........................................................................................................................ 3
2. System Block......................................................................................................................................... 4
3. List of key parts................................................................................................................................... 5
4. IC General Description........................................................................................................................6
5. Software Upgrade...............................................................................................................................18
6. Setting Hotel Mode Menu................................................................................................................ 19
7. Wiring Diagram................................................................................................................................... 19
8.PCB Silkscreen..................................................................................................................................... 20
9.Schematic Circuit Diagram.................................................................................................................22
10.Key Power Check Point................................................................................................................... 32
11.Trouble Shooting................................................................................................................................ 33
Revision History
Version
Number
Revision
Data
Description of changes

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1. Technical Specification
1 Brief Information
1.1 Model Name 7M02B
1.2 Solution MSD6486
1.3 Display Definition (max) 1920*1080
1.4 Display Interface LVDS/MiniLVDS/EPI/EDP/V-BY-ONE LVDS
1.5 AC Input Range (三合一板必须填写) 100~240V
1.6 Standby Power Consumption <0.5W(normal)
1.7
White Balance, Color Tempe
rature
Min TYP Max Unit 17210(262,260)
9660(281,294)
6570(313,329)
6570 9660 17210 kdeg
1.8
Video Noise Limited Sensitiv
ity(@S/N=30dB)
60 dB VHF
60 dB UHF
1.9 Video Input Level(75 ohm) 1 Vp-p
2 Signal Receiving System
2.1 ATV Receiving System ATV Receiving System
2.1.1 NTSC-M No
2.1.2 PAL BG/I/DK/NTSC-M No/No
2.1.3 PAL/SECAM BG/DK/I SECAM L/L" No
2.1.4 PAL M/N NTSC-M Yes
2.2 DTV Receiving System DTV Receiving System
2.2.1 ATSC No
2.2.2 DVB-T No
2.2.3 DVB-T with CI No
2.2.4 DVB-T2 No
2.2.5 DVB-T2 with CI+ No
2.2.6 ISDB-T/SBTVD-T Yes
2.2.7 DTMB No
2.2.8 DVB-C with CA No
2.2.9 DVB-S No
2.2.10 DVB-S2 No
2.3 Antenna input Antenna input
2.3.1 Antenna Input port: 1 (1 for analogue) No

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2.3.2 Antenna Input port: 1 (1 for both analogue and digital) No
2.3.3 Antenna Input port: 2 (1 air + 1 Cable) YES
2.3.4 Type of Antenna Input Port IEC169-24 Male
2.3.5 Receiving Frequency range (ATV) 47.25MHz～859.25MHz
2.3.6 Receiving Frequency range (DTV) 177-803.143 MHZ
2.37 Receiving Frequency range (DVB-S/S2) Nonsupport
2. System Block
100mA
TUNER 5V 馈电
500mA
+5V_Normal
AZ1117
3V3 1A
AZ1117
3V3 1A
POWER 5707(10W*2)
+12V_PWR +12V_Normal
+12V_Panel
Standby
FOR panle
ME9435A-6A
MP1653 (3A)
EN
AUDIO AMP 1.2A
310mA
412mA
650mA
480mA 1160mA
+5V_Standby
STANDBY
AO3401
+3.3V_Normal
AZ1117
3V3 1A
+5V_Normal
+3.3V_Standby
MP1653 (3A)
+5V_VDD
STANDBY
+3.3V_TU
+5V_Normal
TLV62565 (1.5A)
+1.5V_DDR
STANDBY
MP8756 6A
90mA
3600mA
+1.1V_VDDC
NAND FLASH
325mA
DDR3(256MB)
SOC
MSD6486
160mA
500mA*2
USB*2
TUNER(ISDB)
STANDBY
150mA
500mA
WIFI MOUDLE
EN
100mA

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3. List of key parts
（三合一板需要加入电源部分关键器件）
NAME Part
reference DESCRIPTION SKYWORTH P/N
IR Receiver IR1 SMD INFRARED RECEIVER MODULES 37.9KHZ H-T 5300-14841A-0S00
Crystal Y201 SMD CRYSTAL 24.000MHZ +/-10PPM CL=9PF (3.
2*2.5MM) TAPE TYPE 4900-124054-QS00
X0T5 SMD CRYSTAL 16.0000MHZ CL:9PF +/-20PPM 4900-116054-RS00
Tuner U1T0 SMD IC MXL661 MAXLINEAR (SILICON TUNER) Q
FN-24 47C4-M66100-0240
SOC U1503 SMD IC MSD6486XTT-8-00BR MSTAR(DTV PROCE 475C-M64861-4080
OTHERS
U0A1 SMD IC TAS5707PHPR TEXAS(20W STEREO DIG AMP 4722-T57070-0480
U0B1 SMD IC OZ560EGN-B1-0-TR O2 MICRO (LED DRIVER) 476K-Z56000-0160
U0D1 SMD IC LNK6778K-TL PI(OFF-LINE SWITCHER WITH
PSR) ESOP-12B 4785-L67780-0120
U0J1 SMD IC CS0809V-C TITAN(5V/3pF 4-WAY TVS PROTE
CTION) SOT23-6L 47HL-C0809C-0060
U0J5 U0J6 U0
J11 U0J12
SMD IC TT0504SP TITAN(LOW CAPACITANCE TVS PRO
TECTION) DFN10 47HL-T05040-0100
U0T3 SMD IC PE42750MLAB-Z PEREGRINE(RF SIGNAL SWIT
CH)QFN 47FK-P42750-0120
U1M9 SMD IC TC58NVG1S3HTA00 TOSHIBA (2G BIT CMOS N
AND EEPROM) TSOPI48 4701-C582G1-0480
U1P1 SMD IC MP8756GD-Z MPS(6A 26V STEP DOWN CONVER
TER#QFN 476A-M87560-0120
U1P2 SMD IC TLV62565DBVR TI(1.5A 2.7V-5.5V STEP DO
WN CONVERTER)SOT-23 4722-T25650-0050
U1P3 U1P4 SMD IC MP1653GTF-Z MPS(3A 17V STEP DOWN CONVE
RTER#SOT563 476A-M16530-0060
U2P1U2P2 U2P
3IC AZ1117CH-3.3TRG1 DIODES (3V3/1A LOW DROPOU 47C5-A11175-0030
U301 SMD IC H5TQ4G63CFR-RDC HYNIX(256M*16 DDR31866 4711-H5T4G5-0960

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4. IC General Description
(选取部分对售后有帮助的 IC,截取关键内容，不要整份规格书粘贴，截图要清晰，放大后能看清
楚所有文字，三合一板需要加入电源 IC 和背光 IC 的介绍)
4.1 Main IC: MSD6486XTT-8-00BR

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4.2 Amplifier: TAS5707PHPR
Functional Block Diagram:

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Pin Configuration and Functions:

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4.3 RF controller: MXL661

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4.4 NAND FLASH：TC58NVG1S3HTA00

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4.5 DC-DC Converter：MP1653
Package Reference:
Pin Functions:

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4.6 DC-DC Converter：MP8756GD-Z

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4.7 DC-DC Converter：TLV62565DBVR

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4.8 RF SW IC：PE42750
Function Diagram:
Pin Configuration and Functions:

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5.Software Upgrade
（描述常用的软件升级方法：USB 升级、开机长按POWER 键升级、UART 升级方法等）
5.1 USB upgrade method
1)Copy the MstarUpgrade.bin to the root directory of a USB device;
2)Insert USB device to USB port of TV;
3)Go to the SW update menu under Function;
4)Press SW update, and then press “yes”,and then the TV will update FW
automatically；
5)Finally，TV will reset and power on when FW upgrade is finished.
5.2 AC ON upgrade method
1)Rename “MstarUpgrade.bin” file to “ACUpgradeReset.bin”
1)Copy the “ACUpgradeReset.bin” to the root directory of a USB device;
2)Insert USB device to USB port of TV;
3)Make TV AC ON;
4)TV will update FW automatically,and the LED indicate flashes with
green and red.
5)Finally，TV will reset and power on when FW upgrade is finished.

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6.Setting Hotel Mode Menu
(以东芝机酒店模式为例)
NA
7.Wiring Diagram
(要求清晰，放大后能看清楚所有文字)

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8.PCB Silkscreen
（只需显示元件外形及位号丝印，隐藏走线）
8.1 Silkscreen top