接觸器 20BC015A3AYNACC0
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.
接觸器 20BC015A3AYNACC0
20BC011A0AYNANC1 |
20BC011A0AYNAND0 |
20BC011A0AYYACD1 |
20BC011A0AYYANC0 |
20BC011A0NYNANC0 |
20BC011A0NYNANC1 |
20BC011A0NYNANN0 |
20BC011A0NYYADA0 |
20BC011A0NYYANC0 |
20BC011A0NYYANC1 |
20BC011A3AYNACC1 |
20BC011A3AYNADA0 |
20BC011A3AYNADC0 |
20BC011A3AYNANC0 |
20BC011A3AYNANC1 |
20BC011A3AYNAND0 |
20BC011A3AYYADC0 |
20BC011A3AYYAEC1 |
20BC011A3AYYANC0 |
20BC011A3AYYANC1 |
20BC011A3NYYACA0 |
20BC015A0AYNACC0 |
20BC015A0AYNANA0 |
20BC015A0AYNANB0 |
20BC015A0AYNANC0 |
20BC015A0AYNANC1 |
20BC015A0AYNAND0 |
20BC015A0AYNANN0 |
20BC015A0AYYANC0 |
20BC015A0NYNACC1 |
20BC015A0NYNANC0 |
20BC015A0NYYADA0 |
20BC015A0NYYANC0 |
20BC015A3AYNACC0 |
20BC015A3AYNACC1 |
20BC015A3AYNADC0 |
20BC015A3AYNADC1 |
20BC015A3AYNAEC0 |
20BC015A3AYNANC0 |
20BC015A3AYNANC1 |
20BC015A3AYNAND0 |
20BC015A3AYNANN0 |
20BC015A3AYYADA0 |
20BC015A3AYYANC0 |
20BC015A3NYYADA0 |
20BC022A0AYNACB0 |
20BC022A0AYNACC0 |
20BC022A0AYNACC1 |
20BC022A0AYNANA0 |
20BC022A0AYNANB0 |
20BC022A0AYNANC0 |
20BC022A0AYNANC1 |
20BC022A0AYNAND0 |
20BC022A0AYYANC0 |
20BC022A0NYNANC0 |
20BC022A0NYNANC1 |
20BC022A0NYNANN0 |
20BC022A0NYYANC1 |
20BC022A3AYNACA0 |
20BC022A3AYNACC0 |
20BC022A3AYNACC1 |
20BC022A3AYNADA0 |
20BC022A3AYNADC0 |
20BC022A3AYNAEA0 |
20BC022A3AYNAEC0 |
20BC022A3AYNAEC1NNAD |
20BC022A3AYNAEN0 |
20BC022A3AYNANA0 |
20BC022A3AYNANC0 |
20BC022A3AYNAND0 |
20BC022A3AYYACC1 |
20BC022A3AYYADA0 |
20BC022A3AYYADC0 |
20BC022A3NYNAEC0 |
20BC030A0AYNACC0 |
20BC030A0AYNANA0 |
20BC030A0AYNANC0 |
20BC030A0AYNANC1 |
20BC030A0AYNAND0 |
20BC030A0AYNANN0 |
20BC030A3AYNACC0 |
20BC030A3AYNADC1 |
3HAC020813-165 |
3HAC020817-001 |
3HAC020823-002 |
3HAC020841-001 |
3HAC020843-001 |
3HAC020847-001 |
3HAC020849-001 |
3HAC020855-001 |
3HAC020869-001 |
3HAC020885-001 |
3HAC020886-001 |
3HAC020890-004 |
3HAC020890-008 |
3HAC020890-009 |
3HAC020890-025 |
3HAC020890-028 |
3HAC020890-037 |
3HAC020890-040 |
3HAC020890-041 |
3HAC020890-042 |
3HAC020890-044 |
3HAC020890-046 |
3HAC020890-059 |
3HAC020890-061 |
3HAC020890-063 |
3HAC020890-064 |
3HAC020890-067 |
3HAC020890-068 |
3HAC020890-072 |
3HAC020890-077 |
3HAC020890-078 |
3HAC020890-080 |
3HAC020892-005 |
3HAC020898-001 |
3HAC020900-002 |
3HAC020902-001 |
3HAC020909-001 |
3HAC020912-001 |
3HAC020914-001 |
3HAC020925-001 |
3HAC020929-002 |
3HAC020929-006 |
3HAC020929-007 |
3HAC020932-097 |
3HAC020932-100 |
3HAC020938-001 |
3HAC020938-003 |
3HAC020938-004 |
3HAC020938-005 |