电缆1756-L84E-NSE
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.
电缆1756-L84E-NSE
| 1756-L73 |
| 1756-L73EROM |
| 1756-L73EROMS |
| 1756-L73K |
| 1756-L73S |
| 1756-L73SK |
| 1756-L73SXT |
| 1756-L73XT |
| 1756-L74 |
| 1756-L74K |
| 1756-L75 |
| 1756-L75K |
| 1756-L7RMCN |
| 1756-L7RMEN |
| 1756-L7SP |
| 1756-L7SPK |
| 1756-L7SPXT |
| 1756-L81E |
| 1756-L81E-NSE |
| 1756-L81EK |
| 1756-L81EP |
| 1756-L81ES |
| 1756-L81ESK |
| 1756-L81EXT |
| 1756-L82E |
| 1756-L82E-NSE |
| 1756-L82EK |
| 1756-L82ES |
| 1756-L82ESK |
| 1756-L82EXT |
| 1756-L83E |
| 1756-L83E-NSE |
| 1756-L83EK |
| 1756-L83EP |
| 1756-L83ES |
| 1756-L83ESK |
| 1756-L83EXT |
| 1756-L84E |
| 1756-L84E-NSE |
| 1756-L84EK |
| 1756-L84ES |
| 1756-L84ESK |
| 1756-L84EXT |
| 1756-L85E-NSE |
| 1756-L85EK |
| 1756-L85EP |
| 1756-L85EXT |
| 1756-L8SP |
| 1756-L8SPK |
| 1756-LSC8XIB8I |
| 1756-LSC8XIB8IK |
| 1756-M02AE |
| 1756-M02AEK |
| 1756-M02AS |
| 1756-M02ASK |
| 1756-M03SE |
| 1756-M03SEK |
| 1756-M08SE |
| 1756-M08SEG |
| 1756-M08SEGK |
| 1756-M08SEK |
| 1756-M16SE |
| 1756-M16SEK |
| 1756-N2 |
| 1756-N2XT |
| 1756-OA16 |
| 1756-OA16I |
| 1756-OA16IK |
| 1756-OA16K |
| 1756-OA8 |
| 1756-OA8D |
| 1756-OA8E |
| 1756-OA8K |
| 1756-OB16D |
| 1756-OB16DK |
| 1756-OB16E |
| 1756-OB16EK |
| 1756-OB16I |
| 1756-OB16IEF |
| 1756-OB16IEFK |
| 1756-OB16IEFS |
| 1756-OB16IEFSK |
| 1756-OB16IK |
| 1756-OB16IS |
| 1756-OB32 |
| 1756-OB32K |
| 1756-OB8 |
| 1756-OB8EI |
| 1756-OB8EIK |
| 1756-OB8K |
| 1756-OBV8S |
| 1756-OC8 |
| 1756-OC8K |
| 1756-OF4 |
| 1756-OF4K |
| 1756-OF8 |
| 1756-OF8H |
| 1756-OF8HK |
| 1756-OF8I |
| 1756-OF8IH |
| 1756-OF8IHK |
| 1756-OF8IK |
| 1756-OF8K |
| 1756-OG16 |
| 1756-OG16K |
| 1756-OH8I |
| 1756-ON8 |
| 1756-ON8K |
| 1756-OV16E |
| 1756-OV32E |
| 1756-OV32EK |
| 1756-OW16I |
| 1756-OW16IK |
| 1756-OX8I |
| 1756-OX8IK |
| 1756-PA30XT |
| 1756-PA50 |
| 1756-PA50K |
| 1756-PA72 |
| 1756-PA72K |
| 1756-PA75 |
| 1756-PA75K |
| 1756-PA75R |
| 1756-PA75RK |
| 1756-PAR2 |
| 45C380 |
| 45C381A |
| 61C22A |
| 61C326 |
| 61C346 |
| 61C515 |
| O-51486-17 |
| O-51668-1 |
| O-51811-1 |
| O-51814-1 |
| O-51818-2 |
| O-51820-1 |
| O-51829-2 |
| O-51831-1 |
| 57C404B |
| 57407-4 |
| 57422 |
| 57C493 |
| 57C435 |
| 57552-4A |
| 61C500 |
| 61C599 |
| 0-52876 |
| 0-52875-1 |
| 0-57300 |
| 0-52808 |
| 57400 |
| 0-54392-2 |
| 0-54390 |
| 54392-2 |
| 57403-G |
| ES281CMB |
| 45C15A |
| 52876 |
| 57300 |
| 57405 |
| 52875-1 |
| 57392-2 |
| 0-48650-2 |
| 0-48651-2 |
| 0-48652 |
| 0-48652-30 |
| 0-48653-3 |
| 0-48654 |
| 0-48664-2 |
| 0-48672 |
| 0-48673 |
| 0-48675 |
| 0-48679 |
| 0-48680 |
| 0-48680-101 |
| 0-48680-111 |
| 0-48680-116 |
| 0-48680-117 |
| 0-48680-118 |
| 0-48680-210 |
| 0-48680-211 |
| 0-48680-212 |
| 0-48680-213 |
| 0-48680-216 |
| 0-48680-218 |
| 0-48680-310 |
| 0-48680-312 |
| 0-48680-521 |
| 0-48680-530 |
