Hisense LCD26V88AM Service Manual Download Page 32 | Manualshive

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Hisense LCD26V88AM Service Manual Download Page 32

LCD TV Service Manual

Hisense Confidential

7. Troubleshooting

7.1 Troubleshooting for Remote Control

32

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

NO

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Summary of Contents for LCD26V88AM

Page 1: ...LiquidCrystalDisplay Television Service Manual Chassis MST6E16GS Product Type LCD26V88AM LCD32V88AM Ver 1 0 Hisense Electric Co Ltd April 2009...

Page 2: ...11 5 1 To enter the Factory OSD Menu 11 5 2 Factory OSD Menu 12 6 Software Upgrading 16 6 1 Get ready for upgrading 17 6 2 Upgrading with the ISP_TOOL4 0 9 26 7 Troubleshooting 32 7 1 Troubleshooting...

Page 3: ...e the service trade of all conceivable ways in which service might be done or of the possible hazardous consequences of each way Consequently Hisense has not undertaken any such broad evaluation Accor...

Page 4: ...Unauthorized substitutions may result in fire electric shock or other hazards 1 1 5 Safety regulations require that after a repair the set must be returned in its original condition In particular att...

Page 5: ...ation are important for ensuring the safety of the product and the servicing work Be sure to follow these instructions Before starting the work secure a sufficient working space At all times other tha...

Page 6: ...wires do not move thereby ensuring that they are not damaged and their materials do not deteriorate over long periods of time Therefore route the cables and fix the cables to the original position an...

Page 7: ...LCD TV Service Manual Hisense Confidential TV Rear 7...

Page 8: ...LCD TV Service Manual Hisense Confidential 2 2 Specifications 8...

Page 9: ...ual Hisense Confidential 3 LCD Panel Spec 3 1 LCD26V88AM Model V260B2 L03 JK ROH SN 1056993 3 1 1 General Description 3 1 2 General Features 3 2 LCD32V88AM Model T315XW02VS JK ROH SN 1057962 3 2 1 Gen...

Page 10: ...LCD TV Service Manual Hisense Confidential 3 2 2 General Features 4 Chassis Layout and Overall Wiring Diagrams Chassis Layout LCD26V88AM No Description Part No Type Model PCB Model 10...

Page 11: ...1702 VER D ROH 2 Power board 117562 RSAG2 908 1285 1 ROH RSAG7 820 1377 VER B ROH 3 Keypad 121048 RSAG2 908 1573 4 ROH RSAG7 820 1755 VER A ROH 4 IR board 121225 RSAG2 908 1566 3 ROH RSAG7 820 1725 V...

Page 12: ...in sequence Note If necessary re do number keys 5 Factory OSD appears 6 Press the standby button then AC turn off and restart the TV which can exit factory OSD menu 5 2 Factory OSD Menu The Factory O...

Page 13: ...nent and VGA SOURCE The DC Adjust Can be chosen LOGO NULL HISENSE WELCOME CUSTOMER Option SOURCE TV TOFAC M AGC TOP 5 AGC CURVE 80 ATS 1 Star TUP Menu 1 MACHINE TYPE 0 HIDEF 1 Factory Init QingDao Hua...

Page 14: ...Service Manual Hisense Confidential 5 2 2 Design Menu Test Pattern Test pattern NULL Version Version Panel Type FLASH Design Menu Picture Mode Sound Mode Picture Curve Audio Curve SSC Setting Saving M...

Page 15: ...ndard Brightness 50 Contrast 50 Colour 50 Sound Mode Mode User 120Hz 10 500Hz 10 1 5KHz 10 5KHz 10 10KHz 10 Picture Curve Mode Brightness Curve 0 97 Curve 25 105 Curve 50 120 Curve 75 130 Curve 100 14...

Page 16: ...ervice Manual Hisense Confidential determine the appearances 6 Software Upgrading The software is upgraded by a burning tool ISP_TOOL4 0 9 which can burn the program file bin to the main board of the...

Page 17: ...nual Hisense Confidential 6 1 Get ready for upgrading 6 1 1 Install the ISP_TOOL4 0 9 only for the first time update 1 Port Setting Choose system option from the control panel Click the system icon as...

Page 18: ...LCD TV Service Manual Hisense Confidential Choose the hardware option from the dialog window Click device management icon as the following 18...

Page 19: ...LCD TV Service Manual Hisense Confidential Choose the port COM and LPT1 Choose the ECP print port LPT1 19...

Page 20: ...LCD TV Service Manual Hisense Confidential Click the port of print LPT1 as the following Choose port setting option as the following 20...

Page 21: ...2 Find the folder where the ISP_TOOL4 0 9 lies in There are three folders files in this folder together DLPORTIO dll and FTD2XX DLL must be in the same folder Double click the ISP_TOOL4 0 9 icon and...

Page 22: ...then a dialog window will show as below Port Type setting is LPT1 Base Addr setting is 0x378 Draw on the front of pin 1 switch UART I2c Speed setting is 99 As following Choose SDA in and setting PIN i...

Page 23: ...ual Hisense Confidential Choose SCL in and setting PIN is PIN11 Notes Do not draw on the front of Reverse High As following Choose SDA out and setting PIN is PIN4 Notes Draw on the front of Reverse Hi...

Page 24: ...and setting PIN is PIN2 Notes Draw on the front of Reverse High As following After having finished all above clicking the Apply button to complete the configuration 6 1 2 Hardware connecting You can u...

Page 25: ...LCD TV Service Manual Hisense Confidential Connect the Debug board to the TV use VGA interface the other parallel port to the computer just as the following 25...

Page 26: ...LCD TV Service Manual Hisense Confidential 6 2 Upgrading with the ISP_TOOL4 0 9 6 2 1 Double click the ISP_TOOL4 0 9 icon and a dialog window will show as following 26...

Page 27: ...LCD TV Service Manual Hisense Confidential Click the Read button Choose the update file from the folder 27...

Page 28: ...LCD TV Service Manual Hisense Confidential The update file has been chosen successfully Click the Auto button and choose parameters as following 28...

Page 29: ...LCD TV Service Manual Hisense Confidential Click the Run button Click the connect button then show a dialog box as following 29...

Page 30: ...LCD TV Service Manual Hisense Confidential If show above then click the Run button again and again till show the following dialog window 30...

Page 31: ...ndow indicating upgrading is over 6 2 2 After the update is over Must Confirm the software Version in the Version Menu If the update is successful enter Factory Init Menu and select Clear Unprotectly...

Page 32: ...shooting for Remote Control 32 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 con...

Page 33: ...nse Confidential 7 2 Troubleshooting for Function Key 33 Buttons does not work Check switches Check key board Check Key BD cable Change Key BD cable Replace main board Replace tact switch Replace Key...

Page 34: ...k replace IR BD or Keypad PCA TV won t power on Is LED light NO YES Check Power Inlet YES NO Check Power Cord Only one works Replace Main BD Try Power on by RC and Button Neither works Both Work Power...

Page 35: ...ual Hisense Confidential 7 4 Troubleshooting for Audio 35 No sound Check connecter Check speaker wire Replace main board Reconnect Replace speaker wire YES YES NO NO Check speaker set Replace speaker...

Page 36: ...e Confidential 7 5 Troubleshooting for TV VGA HDMI input 36 No picture on the screen Check Signal Source Check connect Check cable Replace main board Make sure signal source is available Reconnect Rep...

Page 37: ...e Confidential 7 6 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 w...

Page 38: ...Hisense Confidential 7 7 Troubleshooting for Video S Video input 38 No picture on the screen Check Source work or not Check connect Check Cable Wires Check Signal Source Reconnect Replace Cable Wires...

Page 39: ...LCD TV Service Manual Hisense Confidential 8 Explode View 9 Schematic circuit diagram Replace main board 39...

Page 40: ...904 VR1 NC 3904 N 1 N 2 P 4 P 3 VDR1 NC LED 2 SMT VDR1 NC LED 2 SMT 20 MARK 20 MARK Vdd 1 Vss 2 Rext 3 GND 4 SCL 5 SDA 6 N1 ISL29101 N1 ISL29101 14 MARK 14 MARK 7 MARK 7 MARK R102 100 R102 100 R107 NC...

Page 41: ...3 GND 4 DRV 5 VCC 6 NC 7 HV 8 N803 NCP1207ADR2G 0R82 R832 817C 22uF 50V C833 823 R828 MMSZ15T1G VZ802 1N5929B 15v VZ808 104 R922 102 50V C871 102 50V C870 562 R882 471 1kV C830 104 50V C838 104 50V C8...

Page 42: ...V1 3904 CA5 100uF 16V CA5 100uF 16V C6 2 2uF C6 2 2uF C146 0 1uF C146 0 1uF R474 22K R474 22K CA3 220uF 25V CA3 220uF 25V R6 4 7K R6 4 7K L99 FB 3A L99 FB 3A C7 0 1uF C7 0 1uF R29 4 7K R29 4 7K R43 4...

Page 43: ...C30 0 1uF R292 2 2K R292 2 2K C296 10uF C296 10uF R269 4 02K_1 R269 4 02K_1 L16 FB L16 FB C380 2 2uF C380 2 2uF CA94 100uF 16V CA94 100uF 16V C23 0 1uF C23 0 1uF CA79 100uF 16V CA79 100uF 16V C73 0 1u...

Page 44: ...6 37 A7 38 A8 39 A9 40 A10 AP 28 A11 41 DQ0 2 DQ1 4 DQ2 5 DQ3 7 DQ4 8 DQ5 10 DQ6 11 DQ7 13 DQ8 54 DQ9 56 DQ10 57 DQ11 59 DQ12 60 DQ13 62 DQ14 63 DQ15 65 BA0 26 BA1 27 CS 24 RAS 23 CAS 22 WE 21 LDM 20...

Page 45: ...LD 11 CLK 12 CEC 13 NC 14 SCL 15 SDA 16 DDC CEC GND 17 5V POWER 18 HOT PLUG 19 GND1 20 GND2 21 GND3 22 GND4 23 GND7 24 XS32 HDMI_2 XS32 HDMI_2 1 2 VD21 INPAQ_VPORT VD21 INPAQ_VPORT R333 100 R333 100 R...

Page 46: ...TEL 0755 26996895 FAX 0755 26996830 MST6M16 01A VGA A4 5 10 Friday April 10 2009 Title Size Document Number Rev Date Sheet of C 4 TEL 0755 26996895 FAX 0755 26996830 MST6M16 01A VGA A4 5 10 Friday Apr...

Page 47: ...R156 47K C144 NC C144 NC 1 2 VD69 ESD VD69 ESD R338 22 R338 22 C361 2 2uF C361 2 2uF R118 47 R118 47 R131 75 R131 75 NC 1 NC 2 NC 3 GND 4 SDA 5 SCL 6 VCLK 7 VCC 8 U16 24C02 U16 24C02 R99 75 R99 75 R10...

Page 48: ...1 2 VD90 ESD VD90 ESD R296 47K R296 47K 1 2 VD99 ESD VD99 ESD 1 2 VD95 ESD VD95 ESD 1 2 VD93 ESD VD93 ESD R368 47K R368 47K R684 47k R684 47k R416 100 R416 100 R202 150 1 R202 150 1 C326 2 2uF C326 2...

Page 49: ...49 0 1uF R236 4 7K R236 4 7K C230 22pF C230 22pF R255 4 7K R255 4 7K R254 1K R254 1K R273 NC 0 R273 NC 0 R238 4 7K R238 4 7K C242 NC C242 NC C222 NC C222 NC R251 47 R251 47 R51 1K R51 1K R297 4 7K R29...

Page 50: ...791 220nF C791 220nF R532 NC R532 NC 1 2 3 4 5 6 7 8 9 H3 NC H3 NC R725 1K R725 1K R529 100K R529 100K V29 3904 V29 3904 VD113 1N4148 VD113 1N4148 1 2 3 4 5 6 7 8 9 H1 NC H1 NC L39 33uH L39 33uH 1 3 2...

Page 51: ...5 330 1 M CONN RECT 1 M CONN RECT 1 R8 330 R8 330 1 2 3 4 5 6 7 8 9 S4 NC HOLE V8 S4 NC HOLE V8 1 3 CONN RECT 1 3 CONN RECT 1 R16 330 R16 330 R17 330 R17 330 R19 330 R19 330 R20 330 R20 330 R21 330 R2...

Page 52: ...00K R7 100K Sensor_1 Sensor_2 Sensor_3 Sensor_4 Ca_Out Ca_Ref Sensor_1 Sensor_2 Sensor_3 Sensor_4 Ca_Out Ca_Ref PWM_2 R15 3 3K V1 BC847BW R16 100 R17 100 R18 100 R19 100 R20 100 R21 100 1 2 LED1 1 1 2...

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