冗余模塊 1769-OW16
維修技巧之
維修經(jīng)驗(yàn)總結(jié)
一.帶程序的芯片
1.EPROM芯片一般不宜損壞.因這種芯片需要紫外光才能擦除掉程序,
故在測(cè)試中不會(huì)損壞程序.但有資料介紹:因制作芯片的材料所致,隨著
時(shí)間的推移(年頭長了),即便不用也有可能損壞(主要指程序).所以要
盡可能給以備份.
2.EEPROM,SPROM等以及帶電池的RAM芯片,均極易破壞程序.這類芯片
是否在使用<測(cè)試儀>進(jìn)行VI曲線掃描后,是否就破壞了程序,還未有定
論.盡管如此,同仁們?cè)谟龅竭@種情況時(shí),還是小心為妙.筆者曾經(jīng)做過
多次試驗(yàn),可能大的原因是:檢修工具(如測(cè)試儀,電烙鐵等)的外殼漏電
所致.
3.對(duì)于電路板上帶有電池的芯片不要輕易將其從板上拆下來.
二.復(fù)位電路
1.待修電路板上有大規(guī)模集成電路時(shí),應(yīng)注意復(fù)位問題.
2.在測(cè)試前裝回設(shè)備上,反復(fù)開,關(guān)機(jī)器試一試.以及多按幾次復(fù)
位鍵.
冗余模塊 1769-OW16
| 1769-AENTRK |
| 1769-ARM |
| 1769-ASCII |
| 1769-BA |
| 1769-BOOLEAN |
| 1769-CJC |
| 1769-CLL1 |
| 1769-CLL3 |
| 1769-CRL1 |
| 1769-CRL3 |
| 1769-CRR1 |
| 1769-CRR3 |
| 1769-ECL |
| 1769-ECLK |
| 1769-ECR |
| 1769-ECRK |
| 1769-HSC |
| 1769-IA16 |
| 1769-IA16K |
| 1769-IA8I |
| 1769-IA8IK |
| 1769-IF16C |
| 1769-IF16CK |
| 1769-IF16V |
| 1769-IF16VK |
| 1769-IF4 |
| 1769-IF4FXOF2F |
| 1769-IF4I |
| 1769-IF4IK |
| 1769-IF4K |
| 1769-IF4XOF2 |
| 1769-IF4XOF2K |
| 1769-IF8 |
| 1769-IF8K |
| 1769-IG16 |
| 1769-IM12 |
| 1769-IQ16 |
| 1769-IQ16F |
| 1769-IQ16K |
| 1769-IQ32 |
| 1769-IQ32K |
| 1769-IQ32T |
| 1769-IQ6XOW4 |
| 1769-IR6 |
| 1769-IR6K |
| 1769-IT6 |
| 1769-IT6K |
| 1769-L16ER-BB1B |
| 1769-L18ER-BB1B |
| 1769-L18ERM-BB1B |
| 1769-L18ERM-BB1BK |
| 1769-L19ER-BB1B |
| 1769-L19ER-BB1BK |
| 1769-L24ER-QB1B |
| 1769-L24ER-QBFC1B |
| 1769-L24ER-QBFC1BK |
| 1769-L27ERM-QBFC1B |
| 1769-L30ER |
| 1769-L30ER-NSE |
| 1769-L30ERK |
| 1769-L30ERM |
| 1769-L30ERMK |
| 1769-L30ERMS |
| 1769-L33ER |
| 1769-L33ERK |
| 1769-L33ERM |
| 1769-L33ERMK |
| 1769-L33ERMO |
| 1769-L33ERMOS |
| 1769-L33ERMS |
| 1769-L33ERMSK |
| 1769-L36ERM |
| 1769-L36ERMO |
| 1769-L36ERMOS |
| 1769-L36ERMS |
| 1769-L37ERM |
| 1769-L37ERMK |
| 1769-L37ERMO |
| 1769-L37ERMOS |
| 1769-L37ERMS |
| 1769-L37ERMSK |
| 1769-L38ERM |
| 1769-L38ERMS |
| 1769-L38ERMSK |
| 1769-OA16 |
| 1769-OA16K |
| 1769-OA8 |
| 1769-OB16 |
| 1769-OB16K |
| 1769-OB16P |
| 1769-OB32 |
| 1769-OB32K |
| 1769-OB32T |
| 1769-OB8 |
| 1769-OB8K |
| 1769-OF2 |
| 1769-OF2K |
| 1769-OF4 |
| 1769-OF4CI |
| 1769-OF4CIK |
| 1769-OF4K |
| 1769-OF4VI |
| 1769-OF4VIK |
| 1769-OF8C |
| 1769-OF8CK |
| 1769-OF8V |
| 1769-OF8VK |
| 1769-OG16 |
| 1769-OV16 |
| 1769-OV32T |
| 1769-OW16 |
| 1769-OW16K |
| 1769-OW8 |
| 1769-OW8I |
| 1769-OW8IK |
| 1769-PA2 |
| 1769-PA2K |
| 1769-PA4 |
| 1769-PA4K |
| 1769-PB2 |
| 1769-PB2K |
| 1769-PB4 |
| 1769-PB4K |
| 1769-RD |
| 1769-RL1 |
| 1769-RL2 |
| 1769-RTB40AIO |
| 1769-RTB40DIO |
| 1769-RTB45 |
| 1769-RTBN10 |
| 1769-RTBN18 |
| 1769-SDN |
| 1769-SDNK |
| 1769-SM1 |
| 1769-SM2 |
| 1769-STRT10 |
| 1770-SC |
| 1770-XF |
| 1770-XG |
| 1770-XY |
| 1770-XYB |
| 1770-XYC |
| 1770-XYV |
| 1770-XZ |
| 1771-CP2 |
| 1771-CP3 |
| 1771-IBN |
| 1771-ID |
| 1771-IGD |
| 1771-IT |
| 1771-IV |
| 1771-IVN |
| 1771-OA |
| 1771-OBN |
| 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 |
