傳感器1766-L32BXBA
在無(wú)任何原理圖狀況下要對(duì)一塊比較陌生的電路板進(jìn)行維修,以往的所謂“經(jīng)驗(yàn)”就難有作為,盡管硬件功底深厚的人對(duì)維修充滿信心,但如果方法不當(dāng),工作起來(lái)照樣事倍功半。那么,怎樣做才能提高維修效呢?根據(jù)我公司進(jìn)口設(shè)備維修中心統(tǒng)計(jì)出來(lái)的資料,應(yīng)遵循以下幾個(gè)步驟、按順序有條不紊的進(jìn)行。
方法一:先看后量
使用工具:萬(wàn)用表、放大鏡
當(dāng)手拿一塊待修的電路板,良好的習(xí)慣首先是應(yīng)對(duì)其進(jìn)行目測(cè),必要時(shí)還要借助放大鏡,看什么呢?
主要看:
1、是否有斷線;
2、分力元件如電阻、電解電容、電感、二極管、三極管等時(shí)候存在斷開(kāi)現(xiàn)象;
3、電路板上的印制板連接線是否存在斷裂、粘連等;
4、是否有人修過(guò)?動(dòng)過(guò)哪些元器件?是否存在虛焊、漏焊、插反等操作方面的失誤;
在確定了被修無(wú)上述狀況后,首先用萬(wàn)用表測(cè)量電路板電源和地之間的阻值,通常電路板的阻值都在70-80?以上,若阻值太小,才幾個(gè)或十幾個(gè)歐姆,說(shuō)明電路板上有元器件被擊穿或部分擊穿,就必須采取措施將被擊穿的元器件找出來(lái)。具體辦法是給被修板供電,用手去摸電路板上各器件的
溫度,燙手的講師重點(diǎn)懷疑對(duì)象。若阻值正常,用萬(wàn)用表測(cè)量板上的阻、二極管、三極管、場(chǎng)效應(yīng)管、撥段開(kāi)關(guān)等分力元件,其目的就是首先要確保測(cè)量過(guò)的元件是正常的,我們的理由是,能用萬(wàn)用表解決的問(wèn)題,就不要把它復(fù)雜化。
傳感器1766-L32BXBA
1763-BA |
1763-L16AWA |
1763-L16BBB |
1763-L16BWA |
1763-L16DWD |
1763-MM1 |
1763-NC01 |
1766-L32AWA |
1766-L32AWAA |
1766-L32BWA |
1766-L32BWAA |
1766-L32BXB |
1766-L32BXBA |
1766-MM1 |
1768-CNB |
1768-CNBR |
1768-EWEB |
1768-L43S |
1769-AENTR |
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 |
CACR-SR02AY1SR |
CACR-SR03AA2AH |
CACR-SR03AB1ER |
CACR-SR03AB2ER |
CACR-SR03AC1ER |
CACR-SR03AC1FU |
CACR-SR03AD1KR |
CACR-SR03BB1AF |
CACR-SR03BB1AM |
CACR-SR03BB1BF |
CACR-SR03BB1CS |
CACR-SR03BB1ES |
CACR-SR03BB1HS |
CACR-SR03BC1AM |
CACR-SR03BC1ES |
CACR-SR03BE12M |
CACR-SR03SB1AF |
CACR-SR03SB1BF |
CACR-SR03SZ1SS |
CACR-SR03TB5BM |
CACR-SR03TZ0SM |
CACR-SR03TZ6SF |
CACR-SR03TZ6SS |
CACR-SR05AA2AH |
CACR-SR05AB1ER |
CACR-SR05AC1ER |
CACR-SR05AY1SR |
CACR-SR05BA1AM |
CACR-SR05BB1AF |
CACR-SR05BB1AM |
CACR-SR05BB1BF |
CACR-SR05BB1BS |
CACR-SR05BB1ES |
CACR-SR05BC1ES |
CACR-SR05BZ1SF |
CACR-SR05BZ1SS |
CACR-SR05SB1AF |
CACR-SR05SB1BF |
CACR-SR05SZ1SS |
CACR-SR06TZ6SM |
CACR-SR07AC1CS |
CACR-SR07AC1ER |
CACR-SR07AC1ES |
CACR-SR07BB1AM |
CACR-SR07BZ1SM |
CACR-SR09TZ0SF |
CACR-SR09TZ6SF |
CACR-SR10BY1SG |
CACR-SR10BZ1SF |
CACR-SR10SB1BF |
CACR-SR10SB1DF |
CACR-SR12TB5BM |
CACR-SR12TB6AF |
CACR-SR12TZ6SF |
CACR-SR12TZ6SM |
CACR-SR15BA1AF |
CACR-SR15BB1AM |
CACR-SR15BB1BF |
CACR-SR15BB1BM |
CACR-SR15BB1CS |
CACR-SR15BB1ES |
CACR-SR15BC1AF |