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Unit Circuit Analysis and Testing

----Backlight and Dimming

Dimming waveform when

“Backlight” is set to 0

in setting menu.

(“Nature Light” off)

-32-

Pin J4 of U400 sends out a high or low level, across R003, then 

directly send to power board through pin12 of P001 on the main board, 
control the backlight  on or off. 

Pin B8 of U400 sends out PWM signal, across  R006, then directly 

sends to power board through pin11 of P001 on the main board, adjust 
back light  brightness. 

Summary of Contents for MS901K-AP Series

Page 1: ...Training Material of MS901K AP Chassis...

Page 2: ...8 Module Introduction 10 Block Diagram 13 Key Components Introduction 17 Key Components List 18 Key Test Point 21 Unit Circuit Analysis and Testing 31 Accessories Introduction 38 3D TV Introduction 42...

Page 3: ...rt TV and TV system 1 FEATURES Single chip iDTV solution that supports dual 8 10bit LVDS output channel decoding MPEG decoding 3D formatter security OS andmedia center functionality enabled by a high...

Page 4: ...MS901K AP Series Menu Display 2 Homepage 1 Homepage 2 All Apps 3D Games...

Page 5: ...MS901K AP Series Menu Display 3 Menu Picture Setting Source Settings...

Page 6: ...person watching TV It can automatically shut down the TV screen for energy saving when you re out of the camera s view And it will turn on again when you re back Press Left Right to switch among the...

Page 7: ...bilephone and Pad also the interactivity of multimedia remote control and other functions Please download and installl the client software of TCL nScreen to your smart phone or Pad with Android system...

Page 8: ...eed Memory Manager Memory space management and settings Network Manager Internet related applications management Software Manager App backup upgrading move etc Security Protection Enable or disable ap...

Page 9: ...eful channels including Facebook Twitter You can enter the app and find the videos you are interested in TV Tweets A social networking and micro blogging service provider Via TV Twitter client Users c...

Page 10: ...Y IN Tuner RF IN AV OUT To Right Speaker To Left Speaker To 3D Bluetooth Dongle Debug Port 8 AV1 IN USB1 3 0 USB3 2 0 Audio R IN of YPbPr AV2 VGA To WIFI Dongle To 2 4G Dongle To Camera Dongle Debug D...

Page 11: ...1K2 MAE2HG matching with Vby1 panels eg SDC LTA850FJ01 40 M901K2 MAD2HG 40 M901KI MAA2HG matching with Vby1 panels eg INX V400DK1 KS1 V420DK1 KS1 V500DK2 KS1 V650DK1 KS1 40 M901KL MAG2HG matching with...

Page 12: ...To P1003 07 240WU5 MA3G 07 240WU5 MA8G built in antenna 07 AR1021 MG0G built in antenna 10 To P1003 Module Introduction Wireless Module...

Page 13: ...Module Introduction Bluetooth Module To P905 External Antenna 11 08 46V7501 GR300AA external antenna 07 BT4D02 BT0G 07 BT4D02 BT1G built in antenna To P905 or P906 for 85...

Page 14: ...12 07 240WU5 MS3G external antenna External Antenna To P1005 Module Introduction 2 4G Module for 85...

Page 15: ...Chassis Block Diagram MS901 13 DDR3 1V5 DDR2 1V8 DDR1 2V5...

Page 16: ...Chassis Block Diagram 6M40 14...

Page 17: ...Power Supply Block Diagram 15...

Page 18: ...Power Supply Block Diagram 16...

Page 19: ...24V 12V to 12V 17 U1202 MEMC IC U1301 U1302 DDR U1303 U1304 DDR U1201 SPI Flash 6M40 U008 5V to VDDC1V15 U1105 24V to 6M40_5V U403 Port Processor U007 5V to USB_5V U201 5V to USB_5V_C U301 6M40_5V to...

Page 20: ...MS19C LA 16M BIT SERIAL FLASH TAPE SOIC 208MIL WINBOND U402 CPP 13 MST6M4 0AB MEMC IC SPEC MEMC MST6M40 U1202 13 W25Q32 FVB SPI Flash 6M40 IC MAIN MEMORY WINBOND U1201 CPP 13 T18273 HNB Silicon Tuner...

Page 21: ...U503 13 H5TQ2G BCB DDR IC MEMORY 2G DDR3 1600MHZ H5TQ2G63DFR PBC U501 13 DRNT5C 2GB DDR IC MEMORY 2G DDR3 1600MHZ NT5CB128M16FP DI U501 13 DRH5TQ BCB1G DDR IC MEMORY 1G DDR3 1600MHZ H5TQ1G63EFR PBC U1...

Page 22: ...105 13 RT8110 D0B 24V to 5V IC POWER CONTROL IC RE8110D U005 12 AO4832 0BX MOSFET SMD N 30V 10A 1 9V 0 0175OHM 2W AO4832 Q004 13 RT9721 ABB 5V SWITCH IC MAIN USB MHL POWER SWITCH RT9721AB U301 13 RT97...

Page 23: ...WIFI_ON 6M40_3V3 1V2 3V3II USB_5V_1 DDR_1V5 3D_SYNC_I 3D_EN 3D_SYNC_O MCU_RESET PANEL_VCC VX1T_LOCKN VX1T_HTPDN 6M40_2V5 USB_HUB_3V3 6M40_5V V_AUDIO 5V 1V5_DDR2 EM_3V3 USB2_5V USB3_5V 2V5 1V5DDR3 TUN_...

Page 24: ...nt When TV set working normally the voltage of each pin of P001 is as below Pin 1 2 4 24V Pin 3 5 6 9 0V GND Pin 7 12 3 3V Pin PIN8 0V 2D mode 3 3V 3D mode Pin 10 2 8V Pin 11 Dim signal 3 17V Power Su...

Page 25: ...Key Test Point DC to DC 24V to 12V 23 L007 U004...

Page 26: ...Key Test Point DC to DC 24 24V to 5V L001 Q004 U005...

Page 27: ...Key Test Point DC to DC 25 24V to 6M40_5V L1103 U1105...

Page 28: ...Key Test Point DC to DC 26 5V to 1V5_DDR U001 same with 6M40_5V to 1 5V_DDR_S U1102 L016 L1102 U001 U1102...

Page 29: ...Key Test Point Core Power 27 5V to VDDC1V15 U008 similar to 6M40_5V to VCORE U1106 but two tantalum capacitors close to VCORE L002 L1104 U008 U1106...

Page 30: ...Key Test Point LDO 28 5V to 2V5 U002 same with 6M40_5V to 2 5V_6M40 U1103 U003 U1102 U002 U1103 5V to 3V3 U003 same with 6M40_5V to 3 3V_6M40 U1102 Blur Photo...

Page 31: ...Key Test Point 29 U101 5V to TU_3V3 LDO...

Page 32: ...Key Test Point 30 Q1401 Panel Power Q1402...

Page 33: ...andby mode and the indicator on Press the power button of the remote control or the key board to turn on TV then the Indicator off Pin C3 of U400 sends out a high level across R002 then directly send...

Page 34: ...ght off 32 Pin J4 of U400 sends out a high or low level across R003 then directly send to power board through pin12 of P001 on the main board control the backlight on or off Pin B8 of U400 sends out P...

Page 35: ...Unit Circuit Analysis and Testing Backlight 100 Backlight 50 33 Backlight and Dimming...

Page 36: ...d Q401 turns on When the voltage of C409 is charged about 2 6V the Q401 starts to turn off and MCU_RESET is pulled to low level Reset process finished To reset when AC is cut off the nether circuit wo...

Page 37: ...ess integration to most digital dudio processers and MPEG decoders I2S also known as Inter IC Sound is an electrical serial bus interface standard used for connecting digital audio devices together Th...

Page 38: ...Unit Circuit Analysis and Testing Amplifier 36 R742 MUTE R717 MCLK R716 LRCLK R715 BCLK R714 SDATA C713 AMP_RESET...

Page 39: ...39 Left Channel Output When the input signal and power supply are normal but there is no output you need to check whether the back end short circuit or the amplifier was damaged 37 High frequency Low...

Page 40: ...rol VOL MIC VOL RC360 RC520 Note You can learn more from the manuals of the TV and RCU Touch Plate Up Down Left Right OK It s equipped with general functions of infrared remote control and wireless re...

Page 41: ...EELING FLV H 264 25fps 1280 720 MONKEY FIGHTS WHITE BONE DEMON FLV H 264 25fps 1280 720 THE SPEEDY SLED FLV H 264 25fps 1280 720 THE MAGIC PAINTBRUSH FLV H 264 25fps 1280 720 Pen RP301 with audio Vol...

Page 42: ...1 Tear off the dustproof paper from the TV camera 2 Please connect the camera through a USB hub the camera will be installed successfully when the camera logo displayed on the right top corner of TV...

Page 43: ...essories Introduction 3D TV Glasses 3D Bluetooth Glasses SG GX21AB Kits Battery LED Power Liquid crystal shutter Communicate with 3D TVs via the 2 4GHz RF band learn more from the manual of the GX21AB...

Page 44: ...larized 3D system and some are autostereoscopic without the need of glasses The MS901K AP series use an active shutter 3D system How can we see the 3D image 1 The left eye can only see the left eye im...

Page 45: ...ft eye and repeating this so rapidly that the interruptions do not interfere with the perceived fusion of the two images into a single 3D image The glasses are controlled by a timing signal that allow...

Page 46: ...Bluetooth 3D Block Diagram 44 SOC Panel Bluetooth Emmiter Antenna Shutter Glasses SG ON OFF Power 3D TV Introduction...

Page 47: ...Trouble Shooting No Picture 45...

Page 48: ...Trouble Shooting No Sound 46...

Page 49: ...Trouble Shooting Abnormal Picture 47...

Page 50: ...Trouble Shooting Network Fault wired 48...

Page 51: ...Trouble Shooting Network Fault wireless 49...

Page 52: ...Reset and Repair the system Press Home to open the Homepage Enter Settings System Update menu Select Factory Default to do reset Select System Repair to do repair 50...

Page 53: ...press Menu and successively select TV setting Picture When orange highlight is on the Contrast option Figure 1 press the subsequence RCU keys 1 9 5 0 to enter Design menu Figure 2 or press 9 7 3 5 to...

Page 54: ...to change it Remember to press OK after you confirm New Project ID will take effect by restarting There s another method to change Project ID via shortcut key combinations Enter any source but USB an...

Page 55: ...Enter USB Update from Factory menu 3 Select Mboot Upgrade and press Right to begin 4 Upgrade process takes about 10 seconds After Success is shown on the middle bottom restart the TV and check whether...

Page 56: ...update file as 6m30 bin And select MEMC Upgrade Note 6m30 bin is just a path to update and the actual MEMC chip for MS901K AP series is 6M40 Other operation is the same as Mboot Upgrade But MEMC Upgr...

Page 57: ...B interface of TV 2 Successively enter Settings System Update System Software Update from Home and select Local Update 3 If the upgrade file is found TV will pop up a message that it is verifying Firm...

Page 58: ...and wait for the logo indicator getting on 3 Press and hold the POWER key of key board for more than 10 seconds Then TV will begin to update when you see the screen showing as below Firmware 56 4 Do n...

Page 59: ...Thank you...

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