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REVISION HISTROY |  |  |  |\n| --- | --- | --- | --- |\n| Version | Revise content | Reviser | Date |\n| V1.00 | First issued |  | 2016-7-25 |\n| V1.01 | add 6715 board | Zhang Shujuan | 2017-3-3 |\n| V1.02 | add 7733/7412 board | Zhang Shujuan | 2017-7-4 |\n|  |  |  |  |\n\nContents  \nContents .......................................................................................................................................................................-3-  \nService Manual ...........................................................................................................................................................-4-  \n1. Precautions and notices.....................................................................................................................................-4-  \n1.1 Warning...................................................................................................................................................-5-  \n1.2 Notes .......................................................................................................................................................-7-  \n2. TV boards: ......................................................................................................................................................-10-  \n2.1 Main board layout .................................................................................................................................-10-  \n2.2 Main board difference ...........................................................................................................................-17-  \n3. Factory/Service OSD Menu and Adjustment..................................................................................................-18-  \n3.1 How to enter the Factory OSD Menu ...................................................................................................-18-  \n3.2 Factory OSD Menu ...............................................................................................................................-22-  \n4. Software Upgrading ........................................................................................................................................-31-  \n4.1 USB Upgrading ....................................................................................................................................-31-  \n4.2 USB upgrade fail ..................................................................................................................................-34-  \n4.3 Upgrading with the FlashTool [0.7.0.2](0.7.0.2).exe ............................................................................................-37-  \n5. Trouble shooting .............................................................................................................................................-40-  \n5.1 Troubleshooting for Remote Control ....................................................................................................-40-  \n5.2 Troubleshooting for Function Key........................................................................................................-41-  \n5.3 TV won’t Power On ..............................................................................................................................-42-  \n5.4 Troubleshooting for Audio....................................................................................................................-43-  \n5.5 Troubleshooting for TV/VGA/HDMI input..........................................................................................-44-  \n5.6 Troubleshooting for YPbPr input ..........................................................................................................-45-  \n5.7 Troubleshooting for Video input .................................................................................................","cbCaisDJrk2Ni90n","https://ap.wps.com/l/cbCaisDJrk2Ni90n","pdf",5581773,"English","# Contents\n## Service Manual\n### 1. Precautions and notices\n#### 1.1 Warning\n#### 1.2 Notes\n### 2. TV boards\n#### 2.1 Main board layout\n#### 2.2 Main board difference\n### 3. Factory/Service OSD Menu and Adjustment\n#### 3.1 How to enter the Factory OSD Menu\n#### 3.2 Factory OSD Menu\n### 4. Software Upgrading\n#### 4.1 USB Upgrading\n#### 4.2 USB upgrade fail\n#### 4.3 Upgrading with the FlashTool\n### 5. Trouble shooting\n#### 5.1 Troubleshooting for Remote Control\n#### 5.2 Troubleshooting for Function Key\n#### 5.3 TV won’t Power On\n#### 5.4 Troubleshooting for Audio\n#### 5.5 Troubleshooting for TV/VGA/HDMI input\n#### 5.6 Troubleshooting for YPbPr input\n#### 5.7 Troubleshooting for Video input\n#### 5.7 Troubleshooting for WIFI\n### 6. Signals Block Diagram & power assign & schematic diagram","[{\"question\":\"What safety precautions must be followed before servicing the LCD TV?\",\"answer\":\"Read the safety precautions in the manual before servicing, use only manufacturer-specified replacement parts, and avoid non-authorized parts to prevent voiding warranty and creating hazards.\"},{\"question\":\"How does the manual guide software upgrading for this TV?\",\"answer\":\"It provides procedures for USB upgrading, addresses USB upgrade failure handling, and includes upgrading using the FlashTool.\"},{\"question\":\"Which troubleshooting areas are covered in the manual?\",\"answer\":\"Troubleshooting includes remote control, function keys, power-on failures, audio issues, and problems for TV/VGA/HDMI, YPbPr, video input, and Wi‑Fi.\"}]","LCD Television Service Manual - Chassis MTK5658 - Service Guide for US TV | PDF",1792789161,227]