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接觸器 20BC015A3AYNACC0
維修技巧之
維修經驗總結
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,
故在測試中不會損壞程序.但有資料介紹:因制作芯片的材料所致,隨著
時間的推移(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<測試儀>進行VI曲線掃描后,是否就破壞了程序,還未有定
論.盡管如此,同仁們在遇到這種情況時,還是小心為妙.筆者曾經做過
多次試驗,可能大的原因是:檢修工具(如測試儀,電烙鐵等)的外殼漏電
所致.
3.對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.復位電路
1.待修電路板上有大規模集成電路時,應注意復位問題.
2.在測試前裝回設備上,反復開,關機器試一試.以及多按幾次復
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 |
