Hisense MSD6886 Service Manual Download Page 41 | Manualshive

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5. Trouble shooting

5.1 Troubleshooting for Remote Control

Remote control does not work

Try new batteries

Replace RC

Check IR receiver

Change Led & IR board

Change Led & IR cable

Replace main board

Replace battery

Replace remote control

Replace Led & IR BD

Replace Led & IR cable

YES

YES

NO

YES

NO

YES

NO

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Summary of Contents for MSD6886

Page 1: ...LCDTelevision Service Manual Chassis MSD6886 Version V 1 0 Hisense Electric Co Ltd December 5 2018...

Page 2: ...2 REVISION HISTORY Version Revise content Reviser Date V1 00 First issued 2018 12 5...

Page 3: ...ory OSD Menu 18 3 3 Factory OSD Menu 19 4 Software Upgrading 25 4 1 USB Upgrade 25 4 2 Mstar Tool upgrading 27 5 Trouble shooting 41 5 1 Troubleshooting for Remote Control 41 5 2 Troubleshooting for F...

Page 4: ...ve methods of performing service operations Some of these service operations require the use of tools specially designed for the purpose The special tools should be used when and as recommended It is...

Page 5: ...from RCA Hisense Eassumes no liability express or implied arising out of any unauthorized modification of design Servicetech assumes all liability 1 1 2 All ICs and many other semiconductors are susce...

Page 6: ...iginal condition In addition prior to closing set check that Note All wire harnesses and flex cables are properly routed and secured with factory tape and or mounted cable clamps All cables and connec...

Page 7: ...damaged or if the connector is loose do not use the product otherwise this can lead to fire or electric shock 8 If the power connector or the connector of the power cable becomes dirty or dusty wipe i...

Page 8: ...e power supply block it can result in electric shock or may trip the main circuit breaker When installing the LCD module in and removing it from the packing carton be sure to have at least two persons...

Page 9: ...emoved for servicing purposes have all been returned to their proper locations in accordance with the original setup The lightning flash with arrowhead symbol within an equilateral triangle is intende...

Page 10: ...10 2 TV boards 2 1 Main board layout 2 1 1 The top of main board RSAG7 820 8698 ROH...

Page 11: ...11 MSD6886...

Page 12: ...WUTS XP1 Power for main board jacket Main board terminal Power board terminal Pin definition Pin definition 1 GND 15 GND 3 DIMMING2 DIM1 13 BL_ANA 5 VCC_A VCCA1 11 16V 7 VCC_A VCCA1 9 16V 9 GND 7 GND...

Page 13: ...LDC_VSYNC 7 3D_GLASS_VSYNC PWM Error PWM 0V 3V 6 LD_HSYNC I2C_SCL I2C 5 GND GND 0V 4 LDC_CLK SPI 3 LDC_DATA_O 2 LDC_DATA_I 1 LD_CS I2C_SDA SPI I2C XP2 51pin VB1 jacket Panel terminal jacket definition...

Page 14: ...ignal I 2 C 34 V15 R195 R193 0 19 SCL I 2 C Data signal I 2 C 33 V13 R210 R212 10k C245 NC 20 NC Write Protection L or OPEN Protection H Writable 32 R190 NC V17 NC R208 NC R197 NC R200 NC R614 NC R622...

Page 15: ...43 RX5N VX1 lane 5 9 VRX5_N 44 RX5P VX1 lane 5 8 VRX5_P 45 GND Ground 7 GND 46 RX6N VX1 lane 6 6 VRX6_N 47 RX6P VX1 lane 6 5 VRX6_P 48 GND Ground 4 GND 49 RX7N VX1 lane 7 3 VRX7_N 50 RX7P VX1 lane 7...

Page 16: ...vicing Before disassemble the TV besure to take photes for the TV assembly example for HE55A7000EUWUTS 2 2 TV boards part list Main board Boards function difference Main chassis type For Series RSAG7...

Page 17: ...17 3 Factory Service OSD Menu and Adjustment 3 1 Remote Control...

Page 18: ...to select Sound Speaker Advanced setting Balance 4 On the Balance input figure 1 9 6 9 in sequence on RC Note It is important to remember that the hand fingers can t shield the RC emitter diode 5 Call...

Page 19: ...19 3 3 Factory OSD Menu figure 1...

Page 20: ...list if you want to learn more about TV you d better read it but would not adjust the value please The Factory menu may be have difference for diverse market and customer Take HE55A7000EUWTS for examp...

Page 21: ...21 Note Check whether the Key information under the current Version is OK if appears NG or such as following red surround irregular information then need rewrite the key...

Page 22: ...l init TV Produce signal preset during the factory produce using Option Items can choose Clear all initial the TV EEPROM reset Soft version current software version information Version Software Versio...

Page 23: ...23 Channel init huangdao old Qing Dao TV Produce signal preset during the factory produce using huangdao new...

Page 24: ...can write HDCP2 2 If HDCP key code lost you can write Netflix If Netflix key code lost you can write Widevine If Widevine key code lost you can write Note The Factory menu may be have difference for...

Page 25: ...ing status c Waiting TV is trying to load the software and it will spend about 2 minutes After that UPGRADING SOFTWARE PLEASE DO NOT TURN OFF will be displayed and upgrade process bar will indicate th...

Page 26: ...26 Firgure 1 Loading data Firgure 1 Firgure 2 Upgrading software...

Page 27: ...RT no print message Repairer must read IC device ID code decipher burn the Mboot program the EMMC flash first then USB disk to upgrade the usb_HU55N3050UW bin file Hardware connecting Connect the unit...

Page 28: ...28 4 2 1 Open the UART serial option UAR serial choose on Menu Factory Options UART on Earphone port Connect to the TV earphone hole CN7...

Page 29: ...Windows XP system First install FTCUNIN EXE of FTC100103 MSTAR rar file in your PC This is a drive software of Mstar Another If your PC is Win7 system you will have to install CDM20802_Setup_WIN7 rar...

Page 30: ...1 In mboot status MStar Input du and enter key to ensure then close the SecureCRT window 2 In Supernova status Input 00112233 and enter key to ensure then close the SecureCRT window 3 If no any print...

Page 31: ...e TV board has had Mboot software If TV board has had mboot software already now need update a new one It is important to stop serial port at first as following Run the SecureCRT Pressing the enter ke...

Page 32: ...bit Read more again to contrast the IC Device whether has change Send the device ID to the IC developer MSTAR max sc lv max sc lv mstarsemi com securitysecurity mstarsemi com Waiting for the feedback...

Page 33: ...2 Store the Device ID When click Show DeviceID button you can get 12 bit device ID Next click OK button to copy Open the Password txt file in the same direction of MSTV_Tool exe to stick the Device I...

Page 34: ...semi com securitysecurity mstarsemi com Waiting for the feedback of ID password 3 Deciphering Receive the Device ID password copy it into the password txt as following Click enter password button then...

Page 35: ...35 Click Help Product Key enter security Click Flash Update Mode...

Page 36: ...36 Now Deciphering has finished Don t restart the TV 3 Burn the mboot software with ISP_Tool_5 0 2 Click SPI then click Connect drawing in front of program Exit ISP Read file...

Page 37: ...d following four burning files Respectively graphic as following Click X button to close and save this setting I2C speed setting choose around 30 roughly speed around 200KHz roughly speed not high oth...

Page 38: ...T AC power on the TV if nothing appears on screen then can indicates that the TV no Mboot software next close the SecureCRT window directly 4 2 5 USB upgrading Copy the main software usb_HU55N3050UW b...

Page 39: ...ck the Key information under the current Version whether is OK if NG must rewrite key code 4 2 7 Before upgrade write down the white balance data of different signal source 4 2 8 Reset the Options of...

Page 40: ...ting figure lower Roughly speed about 200KHz and have a try 5 After USB upgrade appear mtdoops mtd device mtddev name number must be supplied Kernel panic not syncing VFS Unable to mount root fs on un...

Page 41: ...ote Control Remote control does not work Try new batteries Replace RC Check IR receiver Change Led IR board Change Led IR cable Replace main board Replace battery Replace remote control Replace Led IR...

Page 42: ...shooting for Function Key Buttons does not work Check switches Check key board Check Key BD cable Change Key BD Replace main board Check solder connections and see if it h t k Replace Key BD OK YES YE...

Page 43: ...NO Check Power Cord Only one works Replace Main BD Try Power on by RC and Button Neither works Both Work Power on OK YES NO Replace Power BD YES NO RED No light Panel Bright NO Replace Main BD NO YES...

Page 44: ...4 Troubleshooting for Audio No sound Check connecter Check speaker wire Replace main board Reconnect Replace speaker wire YES YES NO NO Check speaker set Replace speaker set YES NO OK YES Power Supply...

Page 45: ...Troubleshooting for TV VGA HDMI input No picture on the screen Check Signal Source Check connect Check cable Replace main board Make sure signal source is available Reconnect Replace cable NO YES YES...

Page 46: ...Troubleshooting for YPbPr input No picture on the screen Check Source work or not Check connect Check Wires Green Blue Red Replace main board Check Source Device Reconnect Replace wires NO YES YES NO...

Page 47: ...7 Troubleshooting for Video input No picture on the screen Check Source work or not Check connect Check Cable Wires Replace main board Check Signal Source Reconnect Replace Cable Wires NO YES YES NO Y...

Page 48: ...ideo Analog Power AVDD_AU33 Audio Power AVDD_EAR33 Earphone Drive Power 1A 630mA LDO TLV1117 676 487mA LDO AD1117 3 3V_TU 415mA 415mA NTP8824 PowerTree VCC_PCMCIA 1000mA 5V_PCMCIA 153 6mA 269mA DC DC...

Page 49: ...nel HDMI2 0 HDMI2 0 NTP8824 Debug USB2 0 OTG Title Size Document Number Rev Date Sheet of Block Diagram v1 0 MSD6886NQH A4 3 15 Tuesday November 20 2018 Title Size Document Number Rev Date Sheet of Bl...

Page 50: ...3VV C13 10u 16V R4 1k C22 1u 16V R492 10R R500 1k NC M3 MARK NC C31 100n 16V R30 402R 1 L4 4 7 uH Idc2 4 2A R3 1k C493 47n 16V C43 22u 6 3VV R34 24 9k 1 R40 150k 3DPWM N10 TLV1117LV33DCY ADJ 1 VOUT_1...

Page 51: ...15 Friday November 23 2018 Title Size Document Number Rev Date Sheet of MSD6886NQH v1 0 MSD6886NQH Custom 5 15 Friday November 23 2018 Title Size Document Number Rev Date Sheet of MSD6886NQH v1 0 MSD6...

Page 52: ...3VV C122 10u 6 3V C104 100n 16V C133 100n 16V TP5 1 C113 10u 6 3V C129 2 2u 6 3VV C402 100n 16V MSD6886NQH N1G GND G1 GND P1 GND V2 GND AE2 GND C3 GND L3 GND AB3 GND J4 GND R4 GND T4 GND A5 GND J5 GND...

Page 53: ...September 23 2018 Title Size Document Number Rev Date Sheet of DRAM v1 0 MSD6886NQH Custom 7 15 Sunday September 23 2018 Title Size Document Number Rev Date Sheet of DRAM v1 0 MSD6886NQH Custom 7 15...

Page 54: ...F5 VSS_4 K8 VSS_0 E7 VSSQ_5 P6 VSSQ_0 N5 VSS_1 G5 DAT5 B4 DAT6 B5 VSSQ_1 C4 VSSQ_2 N2 VSSQ_3 P4 NC_0 A1 NC_1 A2 VSSQ_0_31 A6 RFU_0 A7 NC_2 A8 NC_3 A9 NC_4 A10 NC_5 A11 NC_6 A12 NC_7 A13 NC_8 A14 NC_9...

Page 55: ...Number Rev Date Sheet of VBY1 IR KEY v1 0 MSD6886NQH Custom 9 15 Wednesday October 17 2018 V7 MMBT3904LT1 1 2 3 R160 0R NC R167 4 7k C188 100n 16V 3U 1 R182 20k R140 10k NC R128 0R NC R209 0R R145 0R...

Page 56: ...tom 10 15 Sunday September 23 2018 C201 100n 16V XS2 TX 1 TX 2 RX 3 NC1 4 NC2 5 RX 6 NC3 7 NC4 8 GND 10 GND 9 R224 10k R217 75R RV4 AVLC18S02015 NC C196 5p 50V NC R218 75R C195 5p 50V NC C192 5p 50V N...

Page 57: ...HDMI3 RX0P 5 HDMI3 RX1P 5 HDMI3 RX0N 5 HDMI3 RX2P 5 HDMI3 CLKP 5 HDMI3 RX1N 5 HDMI3 RX2N 5 HDMI3 CLKN 5 HDMI ARC 5 HDMI CEC 5 HDMI2 Detect 5 HDMI1 Detect 5 HDMI3 Detect 5 HDMI4 Detect 5 HDMI4 HPD 5 H...

Page 58: ...74 1n 50V SA C479 1n 50V SA R317 0R EU U4 SCT 85 116H reflow EM RF SW 1 BM 2 IF AGC 3 SCL 4 SDA 5 DIF1 6 DIF2 7 Rest 8 GND 10 GND 11 GND 12 GND 13 XOUT 9 C483 47p 50V NC R325 100R EU C244 10u 16V NC L...

Page 59: ...nt Number Rev Date Sheet of USB v1 0 MSD6886NQH Custom 13 15 Tuesday November 20 2018 C264 47p 50V R331 0R C377 10u 16V C376 100n 16V N25 TPS2065DDBVR NC GND 2 EN 4 FLT 3 OUT 1 IN 5 R333 0R C274 100u...

Page 60: ...PCM_OE_N 5 PCM_WE_N 5 PCM_IORD_N 5 TS0_SYNC 5 TS0_VLD 5 TS1_CLK 5 TS1_VLD 5 TS0_D 7 0 5 TS1_D 7 0 5 Title Size Document Number Rev Date Sheet of PCMCIA v1 0 MSD6886NQH Custom 14 15 Tuesday November 27...

Page 61: ...C428 100n 16V C414 470n 50V R522 4 7k R428 1k VD12 1N4148W NC 1 2 C430 10u 50VV NC C415 100n 50V C427 4 7u 6 3VV VD11 1N4148W NC 1 2 R513 5 1R R519 4 7k R416 100k NC C432 100n 50V NC R429 1k N80 NTP8...

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