2024年4月6日发(作者：登阳炎)
R
多媒体产品维修手册
LED39K680X3DU、LED42K680X3DU、LED50K680X3DU、
LED58K680X3DU、LED65K680X3DU、LED55K680X3DU
主板方案：MT5327
3D方案：SG-3D
多媒体研发中心
2013.09
内部技术资料,注意保密!
目 录
LED39K680X3DU、LED42K680X3DU、LED50K680X3DU、LED58K680X3DU、LED65K680X3DU、 4
一、产品介绍 ............................................................................. 4
（一）、产品外观介绍 ................................................................. 4
（二）、产品功能规格、特点介绍 ....................................................... 5
（三）、产品差异介绍 ................................................................. 7
LED39K680X3DU .................................................................... 7
LED42K680X3DU .................................................................... 7
LED50K680X3DU .................................................................... 7
LED58K680X3DU .................................................................... 7
LED65K680X3DU .................................................................... 7
LED55K680X3DU .................................................................... 7
主板差异： ....................................................................... 7
电源板差异： ..................................................................... 8
二、产品方案概述 ......................................................................... 9
整机内部图 ........................................................................... 9
整机信号流程图 ...................................................................... 10
电源分配图 .......................................................................... 10
三、主板原理说明 ........................................................................ 11
主板实物图 .......................................................................... 11
主板电路原理图 ...................................................................... 13
四、电源板原理说明 ...................................................................... 25
LED39K680X3DU、LED42K680X3DU、LED50K680X3DU ......................................... 25
A、电源板组件实物图 ................................................................. 25
B、产品功能、规格： ................................................................. 26
C、方案概述： ....................................................................... 27
D、分部原理说明： ................................................................... 27
E、常见故障现象分析： ............................................................... 33
LED58K680X3DU ....................................................................... 34
A、产品介绍： ....................................................................... 34
B、方案概述： ....................................................................... 36
C、分部原理说明： ................................................................... 36
D、常见故障现象分析： ............................................................... 42
LED65K680X3DU ....................................................................... 43
A、产品介绍： ....................................................................... 43
B、方案概述： ....................................................................... 45
C、分部原理说明： ................................................................... 45
D、常见故障现象分析： ............................................................... 52
LED55K680X3DU ....................................................................... 52
A、产品介绍： ....................................................................... 53
B、方案概述： ....................................................................... 54
C、分部原理说明： ................................................................... 54
D、常见故障现象分析： ............................................................... 61
五、产品爆炸图及明细 .................................................................... 62
LED39K680X3DU ....................................................................... 62
LED42K680X3DU ....................................................................... 63
LED50K680X3DU ....................................................................... 64
LED58K680X3DU ....................................................................... 65
LED65K680X3DU ....................................................................... 66
LED55K680X3DU ....................................................................... 67
六、软件升级方法 ........................................................................ 67
A、MTK5327机芯主板简介 .......................................................... 67
- 2 –
2024年4月6日发(作者：登阳炎)
R
多媒体产品维修手册
LED39K680X3DU、LED42K680X3DU、LED50K680X3DU、
LED58K680X3DU、LED65K680X3DU、LED55K680X3DU
主板方案：MT5327
3D方案：SG-3D
多媒体研发中心
2013.09
内部技术资料,注意保密!
目 录
LED39K680X3DU、LED42K680X3DU、LED50K680X3DU、LED58K680X3DU、LED65K680X3DU、 4
一、产品介绍 ............................................................................. 4
（一）、产品外观介绍 ................................................................. 4
（二）、产品功能规格、特点介绍 ....................................................... 5
（三）、产品差异介绍 ................................................................. 7
LED39K680X3DU .................................................................... 7
LED42K680X3DU .................................................................... 7
LED50K680X3DU .................................................................... 7
LED58K680X3DU .................................................................... 7
LED65K680X3DU .................................................................... 7
LED55K680X3DU .................................................................... 7
主板差异： ....................................................................... 7
电源板差异： ..................................................................... 8
二、产品方案概述 ......................................................................... 9
整机内部图 ........................................................................... 9
整机信号流程图 ...................................................................... 10
电源分配图 .......................................................................... 10
三、主板原理说明 ........................................................................ 11
主板实物图 .......................................................................... 11
主板电路原理图 ...................................................................... 13
四、电源板原理说明 ...................................................................... 25
LED39K680X3DU、LED42K680X3DU、LED50K680X3DU ......................................... 25
A、电源板组件实物图 ................................................................. 25
B、产品功能、规格： ................................................................. 26
C、方案概述： ....................................................................... 27
D、分部原理说明： ................................................................... 27
E、常见故障现象分析： ............................................................... 33
LED58K680X3DU ....................................................................... 34
A、产品介绍： ....................................................................... 34
B、方案概述： ....................................................................... 36
C、分部原理说明： ................................................................... 36
D、常见故障现象分析： ............................................................... 42
LED65K680X3DU ....................................................................... 43
A、产品介绍： ....................................................................... 43
B、方案概述： ....................................................................... 45
C、分部原理说明： ................................................................... 45
D、常见故障现象分析： ............................................................... 52
LED55K680X3DU ....................................................................... 52
A、产品介绍： ....................................................................... 53
B、方案概述： ....................................................................... 54
C、分部原理说明： ................................................................... 54
D、常见故障现象分析： ............................................................... 61
五、产品爆炸图及明细 .................................................................... 62
LED39K680X3DU ....................................................................... 62
LED42K680X3DU ....................................................................... 63
LED50K680X3DU ....................................................................... 64
LED58K680X3DU ....................................................................... 65
LED65K680X3DU ....................................................................... 66
LED55K680X3DU ....................................................................... 67
六、软件升级方法 ........................................................................ 67
A、MTK5327机芯主板简介 .......................................................... 67
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