AOC 55C2U-DVB Service Manual Download Page 48

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This document for ShenZhen KTC Technology CO., Ltd and presented party internal use only,
Do not spread to third party without the written permission.

Block Diagram

Ver:A1.0

8/8/2016

Rev

ZHQING

First Version Release

Description

DATE

History Rev

Author

Content

PAGE

Index&History Rev

System Power

MSD6A638

Video&VGA&USB&Amplify page

LVDS &V by one page

HDMI&Ethernet page

MSD6A638 POWER

Tuner &eMCC flash page

MSD6A638-T8E2 (DVB-T/T2/C) Circuit Diagrams VER:A1.0 2016-8-8

Mainboard circuit diagrams

Summary of Contents for 55C2U-DVB

Page 1: ...0U7571 69 LE55U7570 69 LE55U7571 69 55C2U DVB Product Specification Sheet P1 5 User Manual part P6 28 Factory Pattern Adjustment P29 30 Troubleshooting Procedure P31 36 Software Upgrades After Service...

Page 2: ...54 64 Backlight Type Panel Supplier DLED DLED 1st source panel LG Panda Perfect Motion Rate PMR Perfect Picture Index PPI PMR 800PPI 800PPI Panel Resolution 3840 2160 3840 2160 Panel Frequency Native...

Page 3: ...atural Motion N A N A UHD Display logo Industry N A N A 10 bit color support N A N A Sound Quality Mono Stereo Virtual Surround Mono Stereo Virtual Surround Mono Stereo Virtual Surround Output Power 1...

Page 4: ...0 HD SD 24p 50 60 Component HD SD 24p 50 60 60P 60P HDMI Number 3 3 HDMI 1 HDMI 2 0 up to 4k 60hz 4 4 4 down HDMI 2 0 up to 4k 60hz 4 4 4 down HDMI 2 HDMI 2 0 up to 4k 60hz 4 4 4 down HDMI 2 0 up to 4...

Page 5: ...support YES YES Voice control N A N A Portal VTION VTION Help e manual YES YES UI Interaction 2K17 UI 2K17 UI Screen Format Adjustments 4 3 16 9 film PC Mode HDMI 4 3 16 9 film PC Mode HDMI e Sticker...

Page 6: ...Label Standby Label A B C YES YES Certification Dolby Digital Dolby Digital Plus Dolby Pulse YES YES DTS 2 0 Digital out N A N A DTS Premium Sound N A N A DivX N A N A WMA N A N A Wi Fi YES YES HDMI Y...

Page 7: ...1 30 10 2 2 2 1 1 2 3 4 5 6 7 8 9 10 11 12 1 2 6...

Page 8: ...13 14 15 16 0 17 3 3 7 7...

Page 9: ...4 99 99 8...

Page 10: ...LCD LED 100 240V 30cm VCR 9...

Page 11: ...LCD LED 10...

Page 12: ...11...

Page 13: ...LED AOC AOC AOC AOC 12...

Page 14: ...4 CH 0 9 0 9 1 2 3 4 5 6 7 8 10 9 11 12 14 13 15 16 18 17 19 20 21 13...

Page 15: ...5m OK p q t u 21 20 14...

Page 16: ...5 LED 9 CH TV 15...

Page 17: ...1 2 p q 3 OK 16...

Page 18: ...6 1 9 2 OK p q ECO 1 u 2 OK 1 OK 2 1 2 OK 1 2 TV 17...

Page 19: ...PC PC u 4 3 4 3 16 9 4 3 16 9 4 3 16 9 TV 1 OK 2 OK 1 OK 2 OK 18...

Page 20: ...1 OK 2 OK SPDIF PCM RAW 120Hz 500Hz 1 5KHz 5KHz 10KHz EPG EPG EPG EPG EPG USB t u OK 1 9 2 0 240 9 0 3 OK 9 AOC OK EPG u 19...

Page 21: ...OK USB OK USB USB 1 1 2 OK EasyLink EasyLink 2 OK USB USB 1 2 USB USB 3 4 USB OK 5 USB USB u 9 1 u 2 OK p q 3 USB USB 1 2 USB EDID 1 EDID 2 OK OK EDID HDMI USB 4 5 20...

Page 22: ...1 2 OK 3 WLAN 1 2 Wi Fi 21...

Page 23: ...7 1 2 OK 3 OK TV 1 1 2 3 2 1 2 OK 3 1 2 3 3 1 2 OK 3 4 OK 1 2 2 22...

Page 24: ...8 1 Internet 2 9 AOC ROM 9 MAC Internet 1 2 DHCP OK 9 1 2 IP u APK 3 IP DNS1 DNS2 4 OK 2 9 1 3 WPS WPS OK WPS 23...

Page 25: ...z 720p 50Hz 60Hz 1080i 50Hz 60Hz 1080p 50Hz 60Hz USB NTFS FAT32 FAT USB 75ohm IEC75 NTSC DVB T NTSC PAL SECAM 50 3840x2160 2 AAA 100 240V 60Hz 0 5W 50 110W 50 1126mm 655mm 83mm 10 2kg 1126mm 709 252mm...

Page 26: ...AOC AOC 1 2 2 2 5 5 3 50 200 200 4 M6 55 200 200 4 M6 25...

Page 27: ...10 AOC TV 0 26...

Page 28: ...HDCP HDMI HDMI HDMI Internet Internet HDMI HDMI 27...

Page 29: ...exceed the percentage of reference value of presence 3 Note 3 The indicates that the restricted substance corresponds to the exemption Lead Pb Mercury Hg Cadmium Cd Hexavalent chromium Cr 6 Polybromi...

Page 30: ...sure Upgrade confirm Cancel MAC ADC ADJUST ADC Source VGA RGB SD HD R GAIN G GAIN B GAIN R OFFSET G OFFSET B OFFSET Phase Auto Tune White Balance Color Temperature R Gain G Gain B Gain R Offset G Off...

Page 31: ...Fo Fo1 coarse 0 16000 step 100HZ Fo1 fine 0 16000 step 1HZ Fo2 coarse 0 16000 step 100HZ Fo2 fine 0 16000 step 1HZ Fo3 coarse 0 16000 step 100HZ Fo3 fine 0 16000 step 1HZ Fo4 coarse Fo4 fine Fo5 coar...

Page 32: ...upply for looseness open loop and poor contact YES NO YES NO YES NO When the indicator is on but there is no display check remote control for power off minimum brightness contrast ratio check high vol...

Page 33: ...heck the contact line of back light of LCD for any damage and replace LCD board If there is spark striking replace high voltage board YES NO White panel refers to the back light works without visible...

Page 34: ...ing voltage of high voltage board is normal when power on and power off YES NO The circuit related to high voltage board is poor Check whether the lines between main board and high voltage board is in...

Page 35: ...ound amplifier and the shared control circuit There is sound for other inputs replace TV tuner or control chip YES YES NO NO VGA signal input does not respond the screen prompts Please input signal ch...

Page 36: ...LCD with damage or invisible damage of the liquid crystal glass irregular black defect occurs from liquid crystal body to glass and polarizer which can not be seen at any image The overflow portion ca...

Page 37: ...of the pressed portion is not damaged the liquid crystal body can not display normally with spot or block black defect 10 6 Screen mess irregular color display arising from damage of driving plate in...

Page 38: ...the U disk Method 1 Insert U disk into TV main board or programming fixture board USB interface press MENU key on remote control to prompt user menu then press left right key to switch to Setting int...

Page 39: ...d can work properly copy the boot files to the U disk after formatted FAT32 then follow the instructions below to upgrade Method 1 first MbootUpgrade bin boot files stored in the U disk and then inser...

Page 40: ...2 PC identify new device choose to install from list or specified location and appoint driver file position as figure 39...

Page 41: ...install the driver process three times namely Mstar USB Debug Tool A Mstar USB Debug Tool B Mstar USB SerialPort install the three drives in order 6 use programming board online upgrade boot file 1 U...

Page 42: ...for eMMC 3 Click the Read button in the main toolbar under load in EISP Loader File1 munim_EISP_boot _ _ Bin in EISP Read File1 load rom_emmc_boot bin in EISP Loader File2 load munim_EISP_user _ _ Bi...

Page 43: ...4 Click on the main toolbar Config button the interface is set up according to the pictures of their respective settings refer to the actual file name 42...

Page 44: ...during powering up if there Connect Status Success prompt at interface lower right corner means connection success can get in the next step If it prompt Can t Find the Device Type Emmc means connectio...

Page 45: ...6 Check Auto icon in the menu settings are consistent with the figure below and then click Run button to boot file to program Programming progress result Execute button 44...

Page 46: ...he upgrade is complete 3 Notes a the file name and case cannot be wrong otherwise it will not be upgraded b When using U disk to upgrade sometimes after light does not flat after a TV remote control p...

Page 47: ...2 43K R0402 R317 0R R317 0R C212 100uF 450V C212 100uF 450V R316 100R 0805 R316 100R 0805 C571 0 1UF 25V X5R 0402 C571 0 1UF 25V X5R 0402 R321 15R R321 15R R320 15R R320 15R R211 68K R0402 R211 68K R0...

Page 48: ...n KTC Technology Co LTD Block Diagram Ver A1 0 8 8 2016 Rev ZHQING First Version Release Description DATE History Rev 2 Author Content 3 PAGE 4 1 Index History Rev 6 7 5 8 9 System Power MSD6A638 Vide...

Page 49: ...RMAL COAXIAL VGA USB AV IN SPK R VEDIO OUT Audio AMP SPK L TUNER CONN 5V_STANDBY VB1 4K DDR PWR 1 15V 5V_NORMAL EMMC FLASH IR KEY 12V_NORMAL 3 3V_STANDBY AS1117 32Gbit MSD6A638 DC DC DC DC MXL661 TPA3...

Page 50: ...0R R204 0R C132 22uF 6 3V C132 22uF 6 3V R201 510R R201 510R C145 470uF 16V C145 470uF 16V C47 0 1uF C47 0 1uF H29 NC H29 NC 1 R14 4 7K R14 4 7K Q112 3904 Q112 3904 1 2 3 C130 0 47uF C130 0 47uF C101...

Page 51: ...SB LAN VB1 LVDS Detect EMMC NAND Flash Power Power_Detect Normal work V 1V GPIO DEBUG_UART IIC Source Input EMMC NAND SD Chip Configuration Selection Default EMMC 010 CHIP_CONFIG 2 0 PANEL_ON OFF LED...

Page 52: ...uF C183 0 1uF C181 10uF 6 3V C181 10uF 6 3V C174 10uF 6 3V C174 10uF 6 3V C507 0 1uF C507 0 1uF C503 0 1uF C503 0 1uF C171 0 1uF C171 0 1uF S1 Heat sink45X45mm S1 Heat sink45X45mm 1 2 C224 0 1uF C224...

Page 53: ...n Copyright ShenZhen KTC Technology Co LTD iNAND FLASH EMMC 4G 8G EMMC 5 0 NAND and EMMC power Note DS PIN R5 pin Need to NC C466 0 1uF C466 0 1uF 7 5 3 1 8 6 4 2 RP453 NC 0RX4 7 5 3 1 8 6 4 2 RP453 N...

Page 54: ...0K ED8 NC 1pF ED8 NC 1pF R265 47R R265 47R D810 NC D810 NC 1 2 R507 10K R507 10K R21 0R nc R21 0R nc D819 NC D819 NC 1 2 L1 FB NC L1 FB NC R20 0R R20 0R L213 0805_BEAD L213 0805_BEAD R266 33K R266 33K...

Page 55: ...ing 0 5pF Note ESD Note ESD LAN This document for ShenZhen KTC Technology CO Ltd and presented party internal use only Do not spread to third party without the written permission Copyright ShenZhen KT...

Page 56: ...0 1M L904 560nH L904 560nH C929 1nF C929 1nF TC54 10uF TC54 10uF TC26 4 7NF 1KV TC26 4 7NF 1KV C931 1uF C931 1uF C918 0 1uF C918 0 1uF D01 BAV99 D01 BAV99 3 2 1 TC29 1NF 2KV TC29 1NF 2KV CON1 TUNER_CO...

Page 57: ...C38 10uF 6 3V C38 10uF 6 3V C26 0 1uF C26 0 1uF C30 0 1uF C30 0 1uF C43 0 1uF C43 0 1uF C39 0 1uF C39 0 1uF C22 0 1uF C22 0 1uF C33 0 1uF C33 0 1uF C58 10uF 6 3V C58 10uF 6 3V C27 0 1uF C27 0 1uF R27...

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