Related Manuals for Hisense MTK8222
Summary of Contents for Hisense MTK8222
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Page 1: Service Manual
LCD Television Service Manual Chassis： MTK8222 Ver 1.2 Hisense Electric Co.，Ltd. December，2010... -
Page 2: Table Of Contents
4.4.4 Troubleshooting for Audio......................- 57 - 4.4.5 Troubleshooting for TV/VGA/HDMI input................- 58 - 4.4.6 Troubleshooting for YPbPr input....................- 59 - 4.4.7 Troubleshooting for Video/S-Video input..................- 60 - 5. Explode View..............................- 61 - 6. Schematic circuit diagram ..........................- 61 - Hisense Confidential - 2 -... -
Page 3: Service Manual
WHEN REPLACEMENT PARTS ARE REQUIRED, BE SURE TO USE REPLACEMENT PARTS SPECIFIED BY THE MANUFACTURER. Proper service and repair is important to the safe, reliable operation of all Hisense Electric Co., Ltd Equipment. The service procedures recommended by Hisense and described in this Service Guide are effective methods of performing service operations. -
Page 4: Warning
Hisense, must first satisfy himself thoroughly that neither his safety nor the safe of the equipment will be jeopardized by the service method selected. Hereafter throughout this manual, Hisense Electric Co., Ltd will be referred to as Hisense. 1.1 Warning 1.1.1... - Page 5 -Note: The wire trees should be routed correctly and fixed with the mounted cable clamps. -The insulation of the mains lead should be checked for external damage. 1.1.6 (1) Do not touch Signal and Power Connector while this product operates. Do not Hisense Confidential - 5 -...
- Page 6 (8) Do not damage or modify the power cable. It may cause fire or electric shock. (9) If the power cable is damaged, or if the connector is loose, do not use the product: Hisense Confidential - 6 -...
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Page 7: Notes
• While the main power is on, do not touch any parts or circuits other than the ones specified. If any connection other than the one specified is made between the measuring Hisense Confidential - 7 -... - Page 8 All the wires are routed far away from the areas that become hot (such as the heat sink). These wires are fixed in position with the wire clamps so that the wires do not move, thereby ensuring Hisense Confidential - 8 -...
- Page 9 The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintenance (servicing) instructions in the literature accompanying the set. Hisense Confidential - 9 -...
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Page 10: Factory/Service Osd Menu And Adjustment
For Component Video Notes: a、Press “M” button and enter factory mode. b、Press “Menu” button and enter factory OSD menu. c、Select the item “Auto Color”. d、Press VOL+ button to auto color. e、Close the OSD menu after 5 seconds. Hisense Confidential - 10 -... - Page 11 Qingdao Jiangxi Road factory Huang Dao Huangdao Industrial Park Gui Yang Gui Yang Industrial Park Liao Ning Liao Ning Industrial Park Hungary Hisense Hungary Australia Hisense Australia France Hisense France Clean data except Clean Protected WB data and Auto Color data...
- Page 12 Soft Saturation Saturation of Movie mode Audio Set When value is 1 Think about the Volume Min Audio out power before adjusting Volume 25 When value is 25 Think about the Audio out power Hisense Confidential - 12 -...
- Page 13 5kHZ 10kHZ Backlight co PVM 0-350 PVM 350-500 PVM500-1000 PVM 1000-10000 PVM 10000- Power Mode Last station The above “Factory/Service OSD Menu” are reference only, please refer to the actual units to determine the appearances. Hisense Confidential - 13 -...
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Page 14: Software Upgrading
3.2 Get ready for upgrading 3.2.1 Install the driver MTKtools2.44.04+cp210xDriver.rar Double click the icon , install the driver. Select the default value, the driver will be installed step by step. Hisense Confidential - 14 -... - Page 15 Serial connector: to TV’s RS232 port. For the first connecting, the pc will recognize and automatically install the USB device. The process is just like the installation of a mini disk, see the following picture. Hisense Confidential - 15 -...
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Page 16: Upgrading With The Mtktool
The MtkTool using log is restored in the MtkLog folder. It records the running time and date whenever the tool is used. The log will be a txt file named by the date and time. Hisense Confidential - 16 -... - Page 17 3—Press the icon beside the baud rate and make sure it is green as the below picture. 4—Set the flash baud rate to 115200 as the below picture. 5—Click the browse button to select the *.bin file that will be updated. 6—Click the “start” button to update software. Hisense Confidential - 17 -...
- Page 18 LCD TV Service Manual Select mode Communicate Flash Select *.bin of Flash chip port Baud Rate file Start upgrade Choose the current USB conversion Port Later choose com5 Information upgrade process Hisense Confidential - 18 -...
- Page 19 Note: Whether or not click the “Auto Set Flash Baud Rate” in the “window” menu depends on the chip type. If the flash chip does not support high speed transport, do not select this option; otherwise, reserve the selected mood. Hisense Confidential - 19 -...
- Page 20 LCD TV Service Manual Click “Browse” button, find the upgrading program file, and select it. Press “Upgrade” button and start upgrading. The following interface appears on the screen, indicating upgrading successfully. Hisense Confidential - 20 -...
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Page 21: Update With Usb Directly
3.4 Update with USB directly he second update method is with USB directly: MTK8222 Series can update with USB, the software name should be HISENSE.bin. The Updating Steps is set the Source to "DMP interface", insert the USB(the update file HISENSE.bin,which should be in root directory),The TV automatic identify the upgrading software. - Page 22 LCD TV Service Manual After upgrading, you must confirm the software in the “Factory Menu ”and you'd better "CLEAR UNPROTECTLY". Hisense Confidential - 22 -...
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Page 23: Circuit Instruction
3.3V supply for U17 （ FLASH） ， U14 （ EEPROM） is converted by U4 from 5V_ON . 1.0V supply for U34 （ the main IC \MT8222） is converted by U3 from the 3.3V ； 1.2V power supply for the main IC \MT8222. is converted by the 3.3V Hisense Confidential - 23 -... - Page 24 LCD TV Service Manual Block diagram: Hisense Confidential - 24 -...
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Page 25: Image And Signal Process
Video signal: Video of AV1 input through P16B, pass by R2, C5, R1, C1, enter No.1 feet of U34 Video of AV2 input through P16A, pass by R6, C10, R11, C12, enter No.4 feet of U34 Hisense Confidential - 25 -... - Page 26 AV output send out by the No.11 feet of U34, through the below diagram, finally come out by P4. The input Video signal send out the LVDS signal after the U34 managed, the LVDS signal will pass CN9 and go to LCD panel display. Hisense Confidential - 26 -...
- Page 27 Digital audio signal output by feet 47-50 after the disposal of U34, transfer digital to analogue from the U36, change to analogue Signal. One pass the driving diagram to earphone, the other one pass the sound IC to speaker. Hisense Confidential - 27 -...
- Page 28 PWM2 protect FRESET# High voltage for Flash written protect protect ADIN0 Key “0” ADIN1 Key “1” IR-IN IR signal PWM1 Tuner 33V Adjust duty ratio TU_33V PWM1 rise voltage GPIO_21 Audio amplify mute Low-level mute Hisense Confidential - 28 -...
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Page 29: The Main Ic Description
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Page 54: Troubleshooting
Try new batteries Replace battery Replace RC Replace remote control Check IR receiver Change Led & IR board Replace Led & IR BD Change Led & IR cable Replace Led & IR cable Replace main board Hisense Confidential - 54 -... -
Page 55: Troubleshooting For Function Key
4.4.2 Troubleshooting for Function Key Buttons does not work Check solder connections and Check switches see if any switches are stuck. Replace Key BD Check key board Check Key BD cable Change Key BD Replace main board Hisense Confidential - 55 -... -
Page 56: Tv Won't Power On
Try Power on by RC and Button Check signal Panel Bright Source Neither Both works Work Replace Main Replace Main BD Power on Replace Panel (to contact Hisense tech support.) Replace Power BD Hisense Confidential - 56 -... -
Page 57: Troubleshooting For Audio
LCD TV Service Manual 4.4.4 Troubleshooting for Audio No sound Reconnect Check connecter Replace speaker wire Check speaker wire Replace speaker set Check speaker set Replace main board Power Supply Board Hisense Confidential - 57 -... -
Page 58: Troubleshooting For Tv/Vga/Hdmi Input
LCD TV Service Manual 4.4.5 Troubleshooting for TV/VGA/HDMI input No picture on the screen Check Signal Source Make sure signal source is available Reconnect Check connect Replace cable Check cable Replace main board Hisense Confidential - 58 -... -
Page 59: Troubleshooting For Ypbpr Input
LCD TV Service Manual 4.4.6 Troubleshooting for YPbPr input No picture on the screen Check Source work or not Check Source Device Reconnect Check connect Check Wires (Green Blue, Red) Replace wires Replace main board Hisense Confidential - 59 -... -
Page 60: Troubleshooting For Video/S-Video Input
LCD TV Service Manual 4.4.7 Troubleshooting for Video/S-Video input No picture on the screen Check Source work or not Check Signal Source Reconnect Check connect Replace Cable/Wires Check Cable/ Wires Replace main board Hisense Confidential - 60 -... -
Page 61: Explode View
LCD TV Service Manual 5. Explode View 6. Schematic circuit diagram Hisense Confidential - 61 -... - Page 62 5V_M 5V_M 5V_M 5V_AMP 5V_M 2,3,6,8,12,14 5V_AMP 5V_AMP C344 C344 C817 C817 R668 R668 R685 R685 10uF 10uF 0.1uF 0.1uF 12V_M 删除电阻 CE64 CE64 CE69 CE69 20080911 12V_M 4.7k 4.7k 4.7k 4.7k 12V_M 2,11,14 更改AUDIO OUT放大电路电源 SCT1_AUL_OUT R673 R673 SCT2_AUL_OUT R684 R684 +3V3...
- Page 63 5V_M MAIN POWER D188 D188 +5V_ON +5VS B240A B240A +5V_ON +3V3 5V_M D185 D185 +3V3 +3V3 3,4,6,7,11,13,14 5V_M +5VS B240A B240A 12V_M CE68 CE68 CB219 CB219 R259 R259 D187 D187 CE66 CE66 CB218 CB218 FB64 FB64 220uF/16v 220uF/16v 0.1uF 0.1uF 12V_M 12V_M 470uF/16v...
- Page 64 System I2C CVBS input R2424 R2424 NS/100 NS/100 TP134 TP134 OSCL0 CVBS1 OFF_MUTE OSCL0 6,8,11,14 CVBS1 8 OFF_MUTE 14 OSDA0 CVBS2 OSDA0 6,8,11,14 CVBS2 8 CVBS3 2,4,5,6,7,8,9,10,11,12,13,14 CVBS3 8 CVBS4 CVBS4 8 CVBS5 CVBS5 10 CVBS6 U0RX SPDIF IN / OUT CVBS6 10 U0RX U0TX...
- Page 65 DV10 ( Bypass CAPs arround MT8222 ) DV10 DV10 +3V3 +3V3 +3V3 2,3,6,7,11,13,14 add by 08/03/20 DV10 DV33 DV33 DV33 AV33_SIFDIG AV12 CE62 CE62 C886 C886 C887 C887 C888 C888 C889 C889 C890 C890 C891 C891 C892 C892 C893 C893 C894 C894 AV33_SIFDIG...
- Page 66 RDQS0 RDQS0 3 RDQS1 RDQS1 3 RDQM0 RDQM0 3 RDQM1 RDQM1 3 增加FB31 RWE# RWE# 20080911 RCAS# RCAS# RRAS# ( DDR1 DRAM With Termination ) RRAS# RCS# FB31 FB31 RCS# 0603/181 0603/181 RCKE RCKE RND10 RND10 MEM_DQ0 RND1 RND1 RDQ0 MEM_DQ1 RDQ1 RDQ[15..0]...
- Page 67 1st UART IF System E2PROM System Reset# VER.D更改：预留HDCP写入E2PROM ( For Code download and Debug ) PWM2 20081223 PWM2 +3V3 +3V3 ORESET# ORESET# +3V3 10K/NC R88 10K/NC OIRI OIRI CE37 CE37 10K/NC R34 10K/NC 100/NC R87 100/NC 4.7K 4.7K 4.7K 4.7K 220uF/16V 220uF/16V 100/NC R86...
- Page 68 +3V3 +3V3 +3V3 2,3,4,6,11,13,14 +3V3 HDMI port 0 D153 D153 ESD 1.3 USDED HDMI TYPE-A HDMI TYPE-A R-HDMI-L-HX R-HDMI-L-HX RB520S-30 RB520S-30 RX0_2 RX0_2 RX0_2 R-SOD3718N-HX R-SOD3718N-HX R1605 R1605 RX0_2 RX0_2B RX0_2B RX0_2B RX0_2B RX0_1 R121 R121 2008/06/10 RX0_1 CECA CECA RX0_1 RX0_1 RX0_1B...
- Page 69 AV1+S-Video1 Input NEAR CONNECTOR NEAR IC P16B P16B 左 左 AV1_IN AV1_IN 47nF 47nF CVBS1 SIGNAL 黄 黄 CVBS1 CVBS1 3 CVBS2 CVBS2 3 CVBS3 CVBS3 3 中 中 下 下 EZJZ0V800AA EZJZ0V800AA CVBS4 R441 R441 CVBS4 3 47pF 47pF AV1L_IN AV1_L SIGNAL...
- Page 70 NEAR IC NEAR CONNECTOR NS/4.7nF NS/4.7nF SOY0 FB16 FB16 Y0_IN SCT1_R 10nF 10nF 80@100MHz 80@100MHz 15pF 15pF EZJZ0V800AA EZJZ0V800AA 2008/05/05 MODIFY Only for US, EU not stuff Y0_IN_GND 10nF 10nF YPBPR0_GND FB29 FB29 PB0_IN SCT1_G 10nF 10nF PB0P 80@100MHz 80@100MHz 15pF 15pF EZJZ0V800AA...
- Page 71 Only for EU, US not stuff NEAR CONNECTOR Near swtich SCART Connector VER SCART Connector VER SCT1_AUR_OUT FB13 FB13 AUDIO_OUT_R SCT1_AV_IN SCT1_AV 47nF 47nF CVBS5 SCT1_AUR_IN AUDIO_IN_R SCT1_AUL_OUT AUDIO_OUT_L EZJZ0V800AA EZJZ0V800AA 47pF 47pF GND_Audio SCT1_GB_GND GND_Blue SCT1_AVI_GND SCT1_AUL_IN AUDIO_IN_L SCT1_B_IN PR0_IN Blue_I/O SCT1_FS_IN...
- Page 72 TUNER_IF TUNER_IF +5V_TUNER +5V_TUNER +5V_TUNER +5V_TUNER +5V_TUNER 2 12V_M R326 R326 4.7K 4.7K 4.7K 4.7K 2N7002 2N7002 2,3,4,5,6,7,8,9,10,12,13,14 N-MOSFET 100uH 100uH 10uH 10uH OSCL0 SCL_V50 +5V_TUNER IF_TUNER NS/1N4148 NS/1N4148 CVBS0P D109 D109 CVBS0P +3V3 CVBS0N R-SOT3N-0.95-2.75-HX R-SOT3N-0.95-2.75-HX CVBS0N C613 C613 R644 R644 IF_AGC...
- Page 73 AUD_LOUT CA154 CA154 10uF/10v 10uF/10v RA110 RA110 AUD_L 5V_M 5V_M AMUX_5V 5V_M FBA1 FBA1 AUD_ROUT CA155 CA155 10uF/10v 10uF/10v RA111 RA111 AUD_R 5V_M 2,3,6,8,13,14 0603_Bead 0603_Bead CA69 CA69 CA71 CA71 CA68 CA68 4.7uF/16v 4.7uF/16v CA70 CA70 100uF/16v 100uF/16v 0.1uF 0.1uF 0.1uF 0.1uF AMUX_5V...
- Page 74 VER.D更改：LVDS-SEL预留3.3V 20081223 +3V3 +3V3 LVDSVDD +5V_ON 5V_M LVDS POWER R364 R364 R353 R353 增加120HZ屏GPIO口 R352 R352 +5V_ON NS/4K7 NS/4K7 王西瑜20090301 NS/0 NS/0 VBR_OUT 4.7K/NS 4.7K/NS +5V_ON 2 R-RESC1005L-HX R-RESC1005L-HX +3V3 R428 R428 12V_M LVDSVDD LVDSVDD R367 R367 GPIO_8 LVDSVDD LVDSVDD LVDSVDD +3V3 +3V3...
- Page 75 C907 VB901 C903 C905 R901 T901 C803 F801 RV801 RT801 C805 300v VD903 470u/16V L901 1WB60 4u7/450V 470P/1KV 100K/2W T6.3A/250VAC 10D561 NTC5D-20 474/AC275V 102/AC250V 5VS/500mA 300V 1N5819 R801 C908 VB801 C807 XP801 L801 270k L802 100u/16V N901 102/2KV VD901 LINK564 R802 C808 RG1C...