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.
LCD TV Service Manual not undertaken any such broad evaluation. Accordingly, a serviceman that uses a service procedure or tools, which are not recommended by Hisense, must first satisfy himself thoroughly that neither his safety nor the safe of the equipment will be jeopardized by the service method selected.
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Safety regulations require that after a repair the set must be returned in its original condition. In particular attention should be paid to the following points. -Note: The wire trees should be routed correctly and fixed with the mounted Hisense Confidential - 5 -...
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Confirm that the voltage has dropped to a safe level before disconnecting or connecting the connector. Hisense Confidential - 6 -...
• To prevent electric shock and breakage of PC board, start the servicing work at least 30 seconds after the main power has been turned off. Especially when installing and removing the power board, start servicing at least 2 minutes after the main power has Hisense Confidential - 7 -...
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• Do not stack the circuit boards. Failure to observe this precaution may result in problems resulting from scratches on the parts, the deformation of parts, and short-circuits due to residual electric charge. • Routing of the wires and fixing them in position must be done in accordance with Hisense Confidential - 8 -...
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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 -...
LCD TV Service Manual 2. Product Function Specifications 2.1 Product Function Note: The above figures are reference only, please refer to the actual units to determine the appearances. Hisense Confidential - 10 -...
White Balance White Balance Auto Test R DRV Auto Calibration G DRV LOGO B DRV OSD Language R CUT Country G CUT Option B CUT Factory Init BRIGHT_H Test Pattern CONTRAST _H Version: BRIGHT_L CONTRAST_L Hisense Confidential - 19 -...
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LCD TV Service Manual Test Pattern Version BLUE Version: LCD40V57CA_VER1.00.200806X Panel Type: SAM 40 (1366*768) FLASH : PS25P40 5.2.2、Design Menu Design Menu Picture Mode Sound Mode Sound Settings Power Save PIP Option MOVESHARPNESS LipSync Hisense Confidential - 21 -...
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VOLUME 0 VOLUME 1 VOLUME 20 VOLUME 40 VOLUME 100 TVPRE SCALER VOLUME SCALER 0 Note : The above “Factory/Service OSD Menu” are reference only, please refer to the actual units to determine the appearances. Hisense Confidential - 22 -...
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 unit 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” Hisense Confidential - 23 -...
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LCD TV Service Manual Click the “system” icon as the following Choose the “hardware” option from the dialog window Hisense Confidential - 24 -...
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LCD TV Service Manual Click“device management” icon as the following Choose the port (COM and LPT1) Choose the ECP print port (LPT1) Hisense Confidential - 25 -...
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LCD TV Service Manual Click the port of print (LPT1)as the following Choose “port setting”option as the following Hisense Confidential - 26 -...
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Find the folder where the ISP_TOOL4.0.9 lies in. 2、 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 then a dialog window will show as below. Hisense Confidential - 27 -...
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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” is “PIN10”。 Notes: Do not draw on the front of “Reverse High”。 As following Hisense Confidential - 28 -...
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As following Choose “SDA out”and setting “PIN” is “PIN4” Notes: Draw on the front of “Reverse High”。 As following。 Choose “SCL out”and setting “PIN” is “PIN2” Notes: Draw on the front of “Reverse High” As following Hisense Confidential - 29 -...
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LCD TV Service Manual After having finished all above, clicking the “Apply ”button to complete the configuration。 6.1.2 Hardware connecting You can update the software through a special tool (as following) Hisense Confidential - 30 -...
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LCD TV Service Manual Connect the Debug board to the TV use VGA interface, the other parallel port to the computer, just as the following。 Hisense Confidential - 31 -...
LCD TV Service Manual 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。 Click the“Read ”button。 Hisense Confidential - 32 -...
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LCD TV Service Manual Choose the update file from the folder。 Hisense Confidential - 33 -...
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LCD TV Service Manual The update file has been chosen successfully。 Click the“Auto”button and choose parameters as following。 Click the“Run”button Click the“connect”button,then show a dialog box as following。 Hisense Confidential - 34 -...
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LCD TV Service Manual If show above then click the“Run”button again and again,till show the following dialog window。 Hisense Confidential - 35 -...
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If the update is successful, enter Factory Init Menu and select “Clear Unprotectly” a. Press VOL+ button to clear the EEPROM data. b. When the “Clear Unprotectly ” button becomes white, turn off the power. c. Restart the TV. Hisense Confidential - 36 -...
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 - 37 -...
LCD TV Service Manual 7.2 Troubleshooting for Function Key Buttons does not work Replace tact switch Check switches Replace Key BD Check key board Check Key BD cable Change Key BD cable Replace main board Hisense Confidential - 38 -...
Check/replace IR Only BD or Keypad one works Try Power on by Check signal RC and Button OSD? Source Neither Both works Work Replace Main Replace Main BD Power on Replace Panel Replace Power BD Hisense Confidential - 39 -...
LCD TV Service Manual 7.4 Troubleshooting for Audio No sound Reconnect Check connecter Replace speaker wire Check speaker wire Replace speaker set Check speaker set Replace main board Hisense Confidential - 40 -...
LCD TV Service Manual 7.5 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 - 41 -...
LCD TV Service Manual 7.6 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 - 42 -...
7.7 Troubleshooting for Video/S-Video/ SCART input No picture on the screen Check Source work or not Check Signal Source Reconnect Check connect Replace Cable/Wires Check Cable/ Wires Check SCART BD Replace SCART BD Replace main board Hisense Confidential - 43 -...
LCD TV Service Manual 8. Explode View and explode BOM List Explode BOM List : LCD40V57CA Part Name Num. Code No. Remark lamp bar unit B-700-500 LCD PANEL LTA400AA04 IR Board Unit RSAG2.908.102 Key Board Unit RSAG2.908.108 Main Board Unit RSAG2.908.1101-15...
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