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二.故障检修流程图
在修理或者替换零配件过程中注意下面几点：
A. 在拆卸连线，移动连接器，或者替换部件前一定要断开电源线插头。
B. 因为半导体（像集成电路，或者其它的）很容易被静电损坏，所以当要触摸 PCB 前，请确保你的身
体和大地有连线（佩带静电手环） ，或可以将手放在地端，以释放身体上所带的静电。
Notes for repairing chair or replacing parts
A. Make sure the power is off when you tear down the wires, move terminals or replacing parts.
B. The semiconductors( like IC or something else) will easily be damaged by static.
So you touch the PCB before, please make sure your body is connected with the ground.
1、开机无功能/
No function
液晶片是否显示
Does LCD has display
OK
上下行程组件端子线是否连接好
Check the terminals of Up and Down
Stroke Subassembly connected well
OK
检查上下行程组件
是
是否损坏
Check the UP/DOWN
Stroke Subassembly
OK
NG
宽度检测板是否坏
Check the width board
NG
OK
Troubleshooting Process
NG
NG
连接好端子线
Touch well
更换上下行程组件
Replace the UP or
DOWN Stroke
更换宽度检测板
Replace the width board
更换中心板 Replace Main PCB
检查保险丝是否烧
Check the fuse is
OK
电源线是否断路
Check the power cord
OK
电 源 滤 波 器 是 否 损 坏
Chenck the EUP Board
OK
更换保险丝
NG
Replace fuse
更换电源线
NG
Replace fuse
NG
更换电源滤波器
Replace the EUP board
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