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TCL L50B2800 Service Manual
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TCL L50B2800 Service Manual

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SERVICE MANUAL
1. Caution....................................................................................
2. specification..............................................................................
3. Alignment Procedure..................................................................
4．Block diagram........................................................................
5．Scheme Diagram ...............................................................
6. Troubleshooting..................................................................　
This m anual i s t he l atest at t he t ime of pr inting, and doe s not
include the modification which may be made after the printing, by
the constant improvement of product
TCL
L50B2800/MS08-LA

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Summary of Contents for TCL L50B2800

  • Page 1 SERVICE MANUAL L50B2800/MS08-LA 1. Caution………………………………………………………………………… 2. specification…………………………………………………………………… 3. Alignment Procedure………………………………………………………… 4．Block diagram……………………………………………………………… 5．Scheme Diagram ……………………………………………………… 6. Troubleshooting…………………………………………………………　 This m anual i s t he l atest at t he t ime of pr inting, and doe s not include the modification which may be made after the printing, by...
  • Page 2 SCHNEIDER ELECTRONICS GMBH-GERMANY 1. CAUTION CA UTION: Use of controls, adjustments or procedures other than those specified herein may result in hazardous radiation exposure. CA UT ION : T O RE DUCE TH E RIS K OF CA U T ION ELECTR ICA L SHOCK, DO NOT RE MOVE COVER (OR BACK).
  • Page 3 SCHNEIDER ELECTRONICS GMBH-GERMANY IMPORTANT SAFETY INSTRUCTIONS CAUTION: Read all of these instructions. Sa ve these instructions for later use . Follo w all W arnings and Instructions marked on the audio equipment. 1. Read Instructions-All the safety and operating instructionsshouldbe read before the productis operated. 2.
  • Page 4 SCHNEIDER ELECTRONICS GMBH-GERMANY PROTECTION AND LOCATION OF YOUR SET Do not use this television set near water ... for example, near a bathtub, washbowl, kitchen sink, or laundry tub, in a wet basement, or near a swimming pool, etc. Never expose the set to rain or water. If the set has been exposed to rain or water, unplug the set from the wall outlet and refer servicing to qualified service personnel.
  • Page 5 SCHNEIDER ELECTRONICS GMBH-GERMANY OPERATION OF YOUR SET 18. This television set should be operated only from the type of power source indicated on the marking label.If you are not sure of the type of power supply at your home, consult your television dealer or local power company. For television sets designed to operate from battery power, refer to the operating instructions.
  • Page 6 PRODUCT SPECIFICATION RELEASE Model: L50B2800/MS08-LA/4A-LD50O5-CMJGTA Version：4.0 Issued On: 2014-06-09 Basic Information Media Format LCD Smart TV Product Type Music MP3/AC3/HE-AAC/LPCM MS08-LA Chassis Picture JPEG/PNG/BMP/MPO 800MHz H.264/MPEG2/MPEG4/Motion• JPEG Video Linux Memory 2Gb DDR3 / 4Gb Nand Flash File OSD Language English/Portuguese/Spanish Signal Format Capability PAL M/N，NTSC-M...
  • Page 7 Pre-Installed Application List Special Function allows you to record your favorite DTV YouTube• V4 YouTube• Leanback programme. compact • TV• appstore Opera• TV• Store Social • Network Facebook Picasa is a software for you to search, edit Picasa Social• Network and manage photos.
  • Page 8 Factory Test & Alignment Specification For MS08PA-LA Series (V1.0).Doc TCL GMC IPC R&D Factory Test & Alignment Specification (FTAS) for MS08PA-LA Series Version 1.0 Gao Hongxin PREPARED BY : DATE : 2014-05-26 APPROVED BY : DATE : Disclosure Page 1 of 18...
  • Page 9 Factory Test & Alignment Specification For MS08PA-LA Series (V1.0).Doc The information contained in this document is proprietary to TCL IPC and shall not be disclosed by the recipient to third persons without the written permission of the team leader or GM of R&D.
  • Page 10 Factory Test & Alignment Specification For MS08PA-LA Series (V1.0).Doc CABLE&ANTENNA ( PAL M/PAN N/ NTSC) ANTENNA (ISDB-T) HDMI (480i/p, 576i/p, 720p up to 1080i/p, compliant v1.4 with HDCP) Inputs (YPrPb can support from 480i up to 1080p,audio) & Outputs (CVBS, audio) AV Audio Out - Picture, Video, Audio Playback USB Thumb Drive...
  • Page 11 Factory Test & Alignment Specification For MS08PA-LA Series (V1.0).Doc 1. PCB/SKD Assembly: Test & Alignment Pre-Conditions and DC/DC Check 1.1. Before power-on, please check the board according to the relevant block diagram and circuit diagram, and make sure that no serious issue or mistake can destroy the board. For example, the output of DC/DC and LDO should not be shorted to ground.
  • Page 12 Factory Test & Alignment Specification For MS08PA-LA Series (V1.0).Doc format and check picture content and sound quality accordingly: Source Test Signal Test Pattern 2D - Movie 1280x720 2D - Static Picture 1920x1080 Analog /Digital Tuner RF cable generator 1. Frequency Range: full band (VHF/UHF &...

  • Page 13: Factory Menu

    Factory Test & Alignment Specification For MS08PA-LA Series (V1.0).Doc  See Appendix “How to upgrade MAC Address  DeviceID (DID) and UserID (UID) Purpose is to allow Other Network Download (OND) and further specific Services over dedicated portal based on UK. Description/Portal Links/Flow chart are welcome? For such, specific DID (32 bytes) and UID (8 bytes) needs to be paired and overwritten into memory for internal client encryption.

  • Page 14: White Balance (Wb)

    See Appendix “Factory Menu Description” 2.2. Warm-up Test Following TCL standard and practices, it’s required minimum 15min of Warm-Up that can be considered as Burn-In. Additional Aging for White Balance alignment is no more necessary due to consistent Picture Performance with Cloning usage.
  • Page 15 (ex: Minolta CA210 or CA310). The analyzer may not touch the screen surface, and measurement must be performed in a dark environment keeping the probe(s) at 90+/-2° from the panel center. The result should fulfill TCL matching specification (Minolta CA210 reference with CH00): MODEL COOL(x/y)
  • Page 16 Factory Test & Alignment Specification For MS08PA-LA Series (V1.0).Doc Open Mstar “Mboot” software programming tool “ISP_Tool_4528”   Click on “Read”, and select “mboot.bin” file  Then click “Connect” ,it will check SPI FLASH’s tape----correct, it will display OK. Note：If this is not the first time to upgrade, you must do as following Connect 8th pin and 3th pin by a wire.
  • Page 17 Factory Test & Alignment Specification For MS08PA-LA Series (V1.0).Doc Otherwise you will see an error: Write Protect can’t be disabled!!!  Next, click on “Auto” menu, then click “Run”, it begin programming “Mboot.bin”, when programming success, it will display a word “Pass”. Page 10 of 18...
  • Page 18 Factory Test & Alignment Specification For MS08PA-LA Series (V1.0).Doc  See Appendix “How to upgrade MBOOT using USB”  Copy the SW BIN image “V8-6328L01-LB1V0**.bin” into the USB stick root path..  Plug the USB stick to the TV  Into the factory menu (picture1) and Select USB upgrade option.
  • Page 19 Factory Test & Alignment Specification For MS08PA-LA Series (V1.0).Doc The second method：  To use this method, there should be SW in mainboard to ensure TV can display normally.  Copy the SW BIN image “V8-6328L14-LF1VXXX.bin” into USB stick (pen drive) root path ...
  • Page 20 Factory Test & Alignment Specification For MS08PA-LA Series (V1.0).Doc B Gain 000..255 B White balance (-127..+128 for gain) R Offset 000..255 R Gray balance (-127..+128 for offset) G Offset 000..255 G Gray balance (-127..+128 for offset) B Offset 000..255 B Gray balance (-127..+128 for offset) Press “OK”...
  • Page 21 Factory Test & Alignment Specification For MS08PA-LA Series (V1.0).Doc Mboot upgrade Upgrade Mboot NVM Upgrade Upgrade NVM NVM backup Backup NVM CH list Upgrade Upgrade CH list CH list backup Backup CH list 0- DeviceID test submenu Item Sub-item Value Note DeviceID OK/Fail...

  • Page 22: Network Connection

    Factory Test & Alignment Specification For MS08PA-LA Series (V1.0).Doc Appendix ”NETWORK CONNECTION AND TEST” 1.Network connection You can set up your TV so that it can access the Internet through your local area network (LAN) using a wired or wireless connection. 1.1Connecting to a wired network You can attach your TV to your LAN using cable in three ways: •...
  • Page 23 Factory Test & Alignment Specification For MS08PA-LA Series (V1.0).Doc of an available wireless router to setup the connection. -1.2.3.3 Auto If your AP supports WPS (Wi-Fi Protected Setup), you can connect to the network via PIN (Personal Identification Number) or PBC (Push Button Configuration). WPS will automatically configure the SSID and WPA key in either mode.
  • Page 24 Factory Test & Alignment Specification For MS08PA-LA Series (V1.0).Doc 1. Select Options > Network > Applications > Share & See, then press ◄/► to select On. 2. Press Menu on the remote control and select USB, then press OK to launch Share & See applications.
  • Page 25 Factory Test & Alignment Specification For MS08PA-LA Series (V1.0).Doc U302 SO-8 13-W25Q16-00B（CPP） MBOOT: V8-6328L14-LB1Vxxx U301 IC-TSOP48 13-FHMT29-4GB(CPP) Main Software： V8-6328L14-LF1Vxxx 2 The DEVICE ID/MAC Address/HDCP KEY/ESN KEY must be upgrade by debug port into U302. Page 18 of 18...

  • Page 26: Signal Flow Diagram

    Signal Flow Diagram Panel LVDS Transimiter TPA3113D FLASH Y(AV)/PB/PR MSD6308RT Audio in SPDIF Audio out CABLE Network FAT+ / FAT- (ATV) ANATENA (ATV/DTV)
  • Page 27 MODEL: DESCRIPITION: DRAWN: DATE: CHECK: DATE: APPR: DATE: WW R&D CENTER TCL MULTIMEDIA TECHNOLOGY HOLDING LTD. 5TH FLOOR.TCL BUILDING.SOUTH NANHAI ROAD NANSHAN DISTRICT.SHENZHEN.GUANGDONG 518067 CHINA TEL:+86 755 33312403 NOTE: ... PAGE: FORMAT DIN A4...
  • Page 28 24V TO 12V POWER CONTROL CORE1.1V R100 NC R101 NC C118 R121 MAIN_POWER MAIN_POWER NC/470P NC/10R LD60 MAIN_POWER Typ2A VCCK C119 MAIN_POWER UD60 @max3A 0.1U 3_3VSB 3_3VSB R120 MP2143 CD62 CD63 CD64 RD61 POWER_ON PGND 150K R122 L101 392170 L102 BL_ON DIM_PWM 100K...
  • Page 29 ETHERNET AV Output IPTV IN WLAN CONNECTOR F307 F308 F309 F310 F311 F312 GND-AVOUT R335 C313 AVOUT_R AVOUT_L 220K 1000P P311 C314 Must be differential 100ohm U300 AVOUT1_L_OUT WHITE TXVP_0 NET_TX1P R320 R321 F301 NET_TXC NET_RXC AVOUT1_R_OUT TXVN_0 NET_TX1N NET_RX1N C315 RX1N C325...
  • Page 30 HDMI1 HDMI2/MHL HDMI3 F425 P801 H1_ARC P802 F416 F411 P800 H3_HPD H2_HPD H3_RX2+ H2_RX2+ F406 RX2+ H1_HPD RX2+ H1_RX2+ F412 F417 RX2+ H2_SCL H3_SCL GND1 MHL_DETECT GND1 F407 R435 H1_SCL GND1 H3_RX2- R434 MHL_DETECT F418 F413 H2_RX2- 100R MHL_CABLE_DET H3_SDA H2_SDA AVDD5V_MHL H2_5V...
  • Page 31 SPI/NAND FLASH MAIN_POWER 3_3VSB 3_3VSB MCU_RESET 3_3VSB R506 D502 0BAV99 C503 Q502 R507 47K R511 Q501 MCU_RESET R504 C502 BT3906 R502 BT3906 NC/10K NC/0.1U C504 Reset=H 10K/NC Normal=L U500 R516 C505 SPI_CSN NC/0.1U SPI_SDO HOLD# D501 SPI_WP SPI_SCK C501 BAT54C SPI_SDI R503 If 24v<17.8V then reset_H...
  • Page 32 DDR3 POWER 1_5V 1_5V C615 C616 C635 C617 C618 C619 C620 C621 0.1U 0.1U 0.1U 0.1U 0.1U 3_3VSB C615 and C635 NEAR TO IC NORMAL POWER 3.3V R623 POWER_DET 3_3V C631 C632 C633 C634 0.1U 0.1U CORE POWER C602 0.1U AUVRM AUVAG C603...
  • Page 33 U700 1_5V U700 H1_RX0- LINE_IN_0L A_RX0N H1_RX0+ U700 LINE_IN_0R A_RX0P AV/YPBPR_L_IN H1_RX1- RXVN_1 LINE_IN_1L A_RX1N AV/YPBPR_R_IN H1_RX1+ RIN0P RXVP_1 LINE_IN_1R A_RX1P H1_RX2- GIN0M TXVN_0 R701 LINE_IN_2L A_RX2N H1_RX2+ GIN0P TXVP_0 LINE_IN_2R A_RX2P HDMI A BIN0P H1_RXC- LINE_IN_3L A_RXCN HSYNC0 H1_RXC+ DDR3_RESETB LINE_IN_3R A_RXCP...
  • Page 34 Power Amplifier Power AMP TPA3113D2 OUTRP OUTRN OUTRP R829 100K OUTRN P804 V_AUDIO OUTLP U800 WHITE C810 C811 R810 1000P R801 close to SOC 0.1U OUTLN PVCCL2 V_AUDIO L801 C812 R811 R822 22UH FAULT PVCCL1 Q802 R818 0.22U AMP_L_OUT AMP_L C828 AMP_L_OUT L802...

  • Page 35: Troubleshooting

    Trouble Shooting Not start Check power Is Power board 3.3V board STB, 12V normal? Only3.3V Check if every DC-DC Check every Shift module has DC-DC module output. Does main IC have Check if main chip power supply or not Output Pow-ON, Dim, BL-ON Signal to Main IC reset signal power board...
  • Page 36 Trouble Shooting Abnormal Picture Abnormal picture To check which source Abnormal picture in some of source has abnormal picture in all source Check the relevant U700 Check the circuit signal source Problem between U700 to circuit. panel TV, AV, YPbPr, Check the row-resistor, Check the LVDS HDMI, VGA...

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