280SPWRM22HM2電纜
:先外后內(nèi)
使用工具:電路在線維修儀
如果情況允許,是找一塊與被維修板一樣的好板作為參照,然后使用一起的雙棒VI曲線掃描功能對(duì)兩塊板進(jìn)行好、壞對(duì)比測(cè)試,起始的對(duì)比點(diǎn)可以從端口開始,然后由表及里,尤其是對(duì)電容的對(duì)比測(cè)試,可以彌補(bǔ)萬用表在線難以測(cè)出是否漏電的缺憾。
:先易后難
使用工具:電路在線維修儀、電烙鐵、記號(hào)筆
為提高測(cè)試效果,在對(duì)電路板進(jìn)行在線功能測(cè)試前,應(yīng)對(duì)被修板做一些技術(shù)處理,以盡量削弱各種干擾對(duì)測(cè)試進(jìn)程帶來的負(fù)面影響。具體措施是:
1、測(cè)試前的準(zhǔn)備
將晶振短路,對(duì)大的電解電容要焊下一條腳使其開路,因?yàn)殡娙莸某浞烹娡瑯右材軒砀蓴_。
2、采用排除法對(duì)器件進(jìn)行測(cè)試
對(duì)器件進(jìn)行在線測(cè)試或比較過程中,凡是測(cè)試通過(或比較正常)的器件,請(qǐng)直接確認(rèn)測(cè)試結(jié)果,以便記錄;對(duì)測(cè)試未通過(或比較超差)的,可再測(cè)試一遍,若還是未通過,也可先確認(rèn)測(cè)試結(jié)果,就這樣一直測(cè)試下去,直到將板上的器件測(cè)試(或比較)完,然后再回過頭來處理那些未通過測(cè)試(或比較超差)的器件。對(duì)未通過功能在線測(cè)試的器件,儀器還提供了一種不太卻又比較實(shí)用的處理方法,由于儀器對(duì)電路板的供電可以通過測(cè)試夾施加到器件相應(yīng)的電源與地腳,若對(duì)器件的電源腳實(shí)施刃割,則這個(gè)器件將脫離電路板供電系統(tǒng),這時(shí)再對(duì)該器件進(jìn)行在線功能測(cè)試,由于電路板上的其他器件將不會(huì)再起干擾作用,實(shí)際測(cè)試效果等同于“準(zhǔn)離線”,測(cè)準(zhǔn)率將獲得
280SPWRM22GM12 |
280SPWRM22GM14 |
280SPWRM22GM2 |
280SPWRM22GM3 |
280SPWRM22GM4 |
280SPWRM22GM6 |
280SPWRM22GM8 |
280SPWRM22HM015 |
280SPWRM22HM025 |
280SPWRM22HM05 |
280SPWRM22HM1 |
280SPWRM22HM10 |
280SPWRM22HM12 |
280SPWRM22HM14 |
280SPWRM22HM2 |
280SPWRM22HM3 |
280SPWRM22HM4 |
280SPWRM22HM6 |
280SPWRM22HM8 |
280SPWRM24AM015 |
280SPWRM24AM025 |
280SPWRM24AM05 |
280SPWRM24AM1 |
280SPWRM24AM10 |
280SPWRM24AM12 |
280SPWRM24AM14 |
280SPWRM24AM2 |
280SPWRM24AM3 |
280SPWRM24AM4 |
280SPWRM24AM6 |
280SPWRM24AM8 |
280SPWRM24BM015 |
280SPWRM24BM025 |
280SPWRM24BM05 |
280SPWRM24BM1 |
280SPWRM24BM10 |
280SPWRM24BM12 |
280SPWRM24BM14 |
280SPWRM24BM2 |
280SPWRM24BM3 |
280SPWRM24BM4 |
280SPWRM24BM6 |
280SPWRM24BM8 |
280SPWRM24CM015 |
280SPWRM24CM025 |
280SPWRM24CM05 |
280SPWRM24CM1 |
280SPWRM24CM10 |
280SPWRM24CM12 |
280SPWRM24CM14 |
280SPWRM24CM2 |
280SPWRM24CM3 |
280SPWRM24CM4 |
280SPWRM24CM6 |
280SPWRM24CM8 |
280SPWRM24DM015 |
280SPWRM24DM025 |
280SPWRM24DM05 |
280SPWRM24DM1 |
280SPWRM24DM10 |
280SPWRM24DM12 |
280SPWRM24DM14 |
280SPWRM24DM2 |
280SPWRM24DM3 |
280SPWRM24DM4 |
280SPWRM24DM6 |
280SPWRM24DM8 |
280SPWRM24EM015 |
280SPWRM24EM025 |
280SPWRM24EM05 |
280SPWRM24EM1 |
280SPWRM24EM10 |
280SPWRM24EM12 |
280SPWRM24EM14 |
280SPWRM24EM2 |
6FC5403-0AA00-0AA1 |
6FC5410-0AY01-0AA0 |
6FC5603-0AC12-1AA0 |
6FC5611-0CA01-0AA0 |
6FC3151-2FA |
6FC3241-0AA-Z |
6FC3871-00A |
6FC3881-0FA-Z |
6FC3981-4BQ |
6FC3981-7HT02 |
6FC3984-3RA |
6FC3984-4BM |
6FC3984-7CL38 |
6FC4100-1AA00-Z |
6FC4700-0BB10 |
6FC5012-0CA01-0AA0 |
6FC5110-0BA02-0AA0 |
6FC5110-0BB02-0AA0 |
6FC5111-0CA01-0AA0 |
6FC5111-0CA02-0AA0 |
6FC5111-0CA02-0AA2 |
6FC5111-0CA03-0AA2 |
6FC5111-0CA05-0AA0 |
6FC5112-0EA01-0AA0 |
6FC5114-0AA02-0AA0 |
6FC5135-0AA01-0AA0 |
6FC5211-0AA00-0AA0 |
6FC5211-0AA10-0AA0 |
6FC5310-0DF00-2AA0 |
6FC5357-0BH00-0XE1 |
6FC5403-0AA00-0AA0 |
6FC5403-0AA00-0AA1 |
6FC5410-0AA00-0AA0 |
6FC5410-0AX02-0AA0 |
6FC5410-0AX02-1AA0 |
6FC5603-0AA00-0AA0 |
6FC9344-3QM |
280SPWRM22HM2電纜