LETV_X3-55艺术版_维修手册_V1.0_2

会员396510

LETV_X3-55艺术版_维修手册_V1.0_2
目录
1. 产品简介 ................................ ................................ ................................ ................................ ................................ ................................ ................................ ................................ ................................ ................................ ................................ ............................ 1
2. 产品技术规格 产品技术规格 产品技术规格 产品技术规格 产品技术规格 ................................ ................................ ................................ ................................ ................................ ................................ ................................ ................................ ................................ ................................ ................................ .................... 1
3. 维修指南 ................................ ................................ ................................ ................................ ................................ ................................ ................................ ................................ ................................ ................................ ................................ ............................ 1
3.1 文档使用说明 .............................................................................................................................................................................................................................................................................. 1
4. 维修注意事项及使用的工具 维修注意事项及使用的工具 维修注意事项及使用的工具 维修注意事项及使用的工具 维修注意事项及使用的工具 维修注意事项及使用的工具 维修注意事项及使用的工具 维修注意事项及使用的工具 维修注意事项及使用的工具 维修注意事项及使用的工具 ................................ ................................ ................................ ................................ ................................ ................................ ................................ ................................ ................................ ................................ .................... 2
4.1 维修注意事项 .............................................................................................................................................................................................................................................................................. 2
4.2 维修使用的工具 ......................................................................................................................................................................................................................................................................... 2
5. LETV_X3LETV_X3LETV_X3LETV_X3 LETV_X3 -55 艺术版主板介绍 艺术版主板介绍 艺术版主板介绍 艺术版主板介绍 ................................ ................................ ................................ ................................ ................................ ................................ ................................ ................................ ................................ ................................ ........................ 3
5.1 LETV_X3-55 艺术版主板原理框图 .................................................................................................................................................................................................................................................. 3
5.2 LETV_X3-55 艺术版主板实物图 ..................................................................................................................................................................................................................................................... 4
6. LETV_X3LETV_X3LETV_X3LETV_X3 LETV_X3 -55 艺术版主板维修介绍 艺术版主板维修介绍 艺术版主板维修介绍 艺术版主板维修介绍 艺术版主板维修介绍 艺术版主板维修介绍 ................................ ................................ ................................ ................................ ................................ ................................ ................................ ................................ ................................ ................................ ................ 4
6.1常见故障判别不维修 ..................................................................................................................................................................................................................................................................... 4
6.1.1 开机问题 ........................................................................................................................................................................................................................................................................... 4
6.1.2电规画面停留在开机LOGO ................................................................................................................................................................................................................................................. 6
6.1.3网络连接问题 ..................................................................................................................................................................................................................................................................... 6
6.1.4电规画面正常，无声音 ........................................................................................................................................................................................................................................................ 9
6.1.5电规开机声音正常，无画面显示： ....................................................................................................................................................................................................................................... 9
6.2功能单元...................................................................................................................................................................................................................................................................................... 9
6.2.1 TV问题 ........................................................................................................................................................................................................................................................................... 9
6.2.2 VGA问题 ........................................................................................................................................................................................................................................................................ 10
6.2.3 HDMI问题 ...................................................................................................................................................................................................................................................................... 11
6.2.4 AV_IN问题 .................................................................................................................................................................................................................................................................... 12
6.2.5 同轴光纤问题 ................................................................................................................................................................................................................................................................ 13
6.2.6 喇叭问题(艺术版无woofer电路) .................................................................................................................................................................................................................................... 14
6.2.7 耳机问题 ....................................................................................................................................................................................................................................................................... 17
6.2.8 USB3.0 HUB（U1103）维修 .............................................................................................................................................................................................................................................. 17
6.2.9 USB3.0 HOST-SUBBOARD ................................................................................................................................................................................................................................................... 18
6.2.10 USB3.0 HOST（J1100） ................................................................................................................................................................................................................................................... 19
6.2.11 USB2.0 HOST（J1101）无法连接 ..................................................................................................................................................................................................................................... 20
6.2.12 SD卡问题 ..................................................................................................................................................................................................................................................................... 20
6.3 遥控问题 ................................................................................................................................................................................................................................................................................... 21
6.4 指示灯问题 ................................................................................................................................................................................................................................................................................ 22
6.5按键问题.................................................................................................................................................................................................................................................................................... 23
6.6 Key Voltage Test Point ................................................................................................................................................................................................................................................................ 24