DSQC256A 卡件
维修技巧之
维修经验总结
一.带程序的芯片
1.EPROM芯片一般不宜损坏.因这种芯片需要紫外光才能擦除掉程序,
故在测试中不会损坏程序.但有资料介绍:因制作芯片的材料所致,随着
时间的推移(年头长了),即便不用也有可能损坏(主要指程序).所以要
尽可能给以备份.
2.EEPROM,SPROM等以及带电池的RAM芯片,均极易破坏程序.这类芯片
是否在使用<测试仪>进行VI曲线扫描后,是否就破坏了程序,还未有定
论.尽管如此,同仁们在遇到这种情况时,还是小心为妙.笔者曾经做过
多次试验,可能大的原因是:检修工具(如测试仪,电烙铁等)的外壳漏电
所致.
3.对于电路板上带有电池的芯片不要轻易将其从板上拆下来.
二.复位电路
1.待修电路板上有大规模集成电路时,应注意复位问题.
2.在测试前装回设备上,反复开,关机器试一试.以及多按几次复
位键.
DSQC256A 卡件
DAI03 |
DAI04 |
DAO01 |
DDI03 |
DSDI130 |
DSQC101 |
DSQC103 |
DSQC107 |
DSQC123B |
DSQC125 |
DSQC129 |
DSQC202 |
DSQC223 |
DSQC224 |
DSQC227 |
DSQC228 |
DSQC230 |
DSQC230H |
DSQC236A |
DSQC236B |
DSQC236C |
DSQC236D |
DSQC236G |
DSQC236K |
DSQC236T |
DSQC239 |
DSQC243 |
DSQC245 |
DSQC249B |
DSQC252 |
DSQC253 |
DSQC256A |
DSQC257 |
DSQC258 |
DSQC259 |
DSQC266A |
DSQC266B |
DSQC266C |
DSQC266G |
DSQC266H |
DSQC266T |
DSQC314A |
DSQC314B |
DSQC315 |
DSQC316 |
DSQC317 |
DSQC321 |
DSQC324 |
DSQC325 |
DSQC326 |
DSQC327 |
DSQC328 |
DSQC328A |
DSQC330 |
DSQC334 |
DSQC336 |
DSQC345A |
DSQC345B |
DSQC345C |
DSQC345D |
DSQC345E |
DSQC346 |
DSQC346B |
DSQC346C |
DSQC346G |
DSQC346U |
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Heidenhain(海德汉),Hydac(贺德克),Hirschmann(赫斯曼),Keyence(基恩士),Moeller(穆勒),
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