電纜 150-C30NBD-NC
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(zhǎng)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(lèi)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(guò)
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(lái).
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(wèn)題.
2.在測(cè)試前裝回設(shè)備上,反復(fù)開(kāi),關(guān)機(jī)器試一試.以及多按幾次復(fù)
位鍵.
電纜 150-C30NBD-NC
| 150-C16NBR |
| 150-C16NCD |
| 150-C16NCR |
| 150-C19NBD |
| 150-C19NBR |
| 150-C201NBD |
| 150-C201NBR |
| 150-C201NCD |
| 150-C201NCR |
| 150-C234NCA-K2 |
| 150-C234NCD-K1 |
| 150-C251NBD |
| 150-C251NBR |
| 150-C251NCD |
| 150-C25NBD |
| 150-C25NBR |
| 150-C25NCD |
| 150-C25NCR |
| 150-C30NBD |
| 150-C30NBD-NC |
| 150-C30NBR |
| 150-C30NCD |
| 150-C30NCR |
| 150-C317NBD |
| 150-C317NBR |
| 150-C317NCD |
| 150-C361NBD |
| 150-C361NBR |
| 150-C361NCD |
| 150-C37NBD |
| 150-C37NBD-NC |
| 150-C37NBR |
| 150-C37NCR |
| 150-C3NBD |
| 150-C3NBR |
| 150-C3NCD |
| 150-C43NBD |
| 150-C43NBD-NC |
| 150-C43NBR |
| 150-C43NCD |
| 150-C43NCR |
| 150-C480NBD |
| 150-C480NBR |
| 150-C480NCD |
| 150-C480NCR |
| 150-C60FBD |
| 150-C60NBD |
| 150-C60NBD-NC |
| 150-C60NBR |
| 150-C60NCD |
| 150-C60NCR |
| 150-C84 |
| 150-C84P |
| 150-C85NBD |
| 150-C85NBR |
| 150-C85NCD |
| 150-C86 |
| 150-C9NBD |
| 150-C9NBR |
| 150-C9NCD |
| 150-C9NCR |
| 150-CA01 |
| 150-CA11 |
| 150-CC25 |
| 150-CF147 |
| 150-CF45 |
| 150-CF64 |
| 150-CI23 |
| 150-CI37 |
| 150-CS1AX |
| FOXBORO FBM241 P0914TG |
| FOXBORO FBM241 P0914TG |
| FOXBORO FBM241b 8通道電壓監(jiān)視輸入，8通道離散量輸出（內(nèi)部電源） 8DI/8DO |
| FOXBORO FBM241b P0914WK |
| FOXBORO FBM241c 8通道觸點(diǎn)輸入，8通道離散量輸出（外部電源） 8DI/8DO |
| FOXBORO FBM241d 8通道觸點(diǎn)輸入，8通道離散量輸出（內(nèi)部電源） 8DI/8DO |
| FOXBORO FBM242 16通道觸點(diǎn)輸出（外部電源）接口組件（可選冗余） 可選冗余16DO |
| FOXBORO FBM242 P0916TA |
| FOXBORO FBM242 P0916TA |
| FOXBORO FBM242? P0916TA |
| FOXBORO FBM243 8通道雙向FOXCOM雙波特率智能設(shè)備接口組件 8IT |
| FOXBORO FBM243 P0914TK |
| FOXBORO FBM246 冗余8通道雙向FOXCOM雙波特率智能設(shè)備接口組件 冗余8IT |
| FOXBORO FBM26/27 觸點(diǎn)/125V直流電壓輸入/輸出 8DI/8DO |
| FOXBORO FBM39 智能變送器輸入/0-20MA輸出 4AI/4AO |
| FOXBORO FBM41/42 觸點(diǎn)輸入/觸點(diǎn)輸出（2.25A） 8DI/8DO |
| FOXBORO FBM46 冗余智能變送器輸入/0-20MA輸出 4AI/4AO |
| FOXBORO FBM底板 P0926JM |
| FOXBORO FCM100E P0972ZA |
| FOXBORO FCM100Et P0926GS |
| FOXBORO FCM100E電纜 P0972TR |
| FOXBORO FCM10E |
| FOXBORO FCP270（F）與FBM接口 |
| FOXBORO FCP270（F）與FBM接口線 |
| FOXBORO FCP底板 P0926HW |
| FOXBORO FCS現(xiàn)場(chǎng)總線卡 |
| FOXBORO FOBORO P0400VT |
| FOXBORO FOXBORO CFT10 I/A |
| FOXBORO FOXBORO DO117KP |
| FOXBORO FOXBORO FPS400-24 |
| FOXBORO FOXBORO 83W-D01S1SSTNA |
| FOXBORO FOXBORO P0400DL |
| FOXBORO FOXBORO P0400DL |
| FOXBORO FOXBORO P0400QA |
| FOXBORO FOXBORO P0400QJ |
| FOXBORO FOXBORO P0400QK |
| FOXBORO FOXBORO P0400QK |
| FOXBORO FOXBORO P0400VP |
| FOXBORO FOXBORO P0400VR |
| FOXBORO FOXBORO P0400VT |
| FOXBORO FOXBORO P0400YP |
| FOXBORO FOXBORO P0400YT |
| FOXBORO FOXBORO P0400YV |
| FOXBORO FOXBORO P0700WB |
| FOXBORO FOXBORO P0700WB |
| FOXBORO FOXBORO P0800DA |
| FOXBORO FOXBORO P0901VK |
| FOXBORO FOXBORO P0902DZ |
| FOXBORO FOXBORO P0903ZE |
| FOXBORO FOXBORO P0904AJ |
| FOXBORO FOXBORO P0911AC |
| FOXBORO FOXBORO P0911PU |
| FOXBORO FOXBORO P0911VW MIW GCIO |
| FOXBORO FOXBORO P0911ZZ |
| FOXBORO FOXBORO P0912HM |
| FOXBORO FOXBORO P0913ED |
| FOXBORO FOXBORO P0914XA |
| FOXBORO FOXBORO P0914ZM |
| FOXBORO FOXBORO P0961CA |
| FOXBORO FOXBORO PM400VP |
| FOXBORO FOXBORO PM400YP |
| FOXBORO FOXBORO PM700WB |
| FOXBORO FOXBORO P0700WB |
| FOXBORO FOXBORO P0700WB |
| FOXBORO FOXBORO P0903ZE |
| FOXBORO FOXBORO P0903ZE |
| FOXBORO FOXBORO P0940BR |
| FOXBORO FOXBORO P0940BW |
| FOXBORO FOXBORO P0940DH |
