1756-TBS6H cpu
在無任何原理圖狀況下要對一塊比較陌生的電路板進行維修,以往的所謂“經(jīng)驗”就難有作為,盡管硬件功底深厚的人對維修充滿信心,但如果方法不當(dāng),工作起來照樣事倍功半。那么,怎樣做才能提高維修效呢?根據(jù)我公司進口設(shè)備維修中心統(tǒng)計出來的資料,應(yīng)遵循以下幾個步驟、按順序有條不紊的進行。
方法一:先看后量
使用工具:萬用表、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)對其進行目測,必要時還要借助放大鏡,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、三極管等時候存在斷開現(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?動過哪些元器件?是否存在虛焊、漏焊、插反等操作方面的失誤;
在確定了被修無上述狀況后,首先用萬用表測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,才幾個或十幾個歐姆,說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。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,燙手的講師重點懷疑對象。若阻值正常,用萬用表測量板上的阻、二極管、三極管、場效應(yīng)管、撥段開關(guān)等分力元件,其目的就是首先要確保測量過的元件是正常的,我們的理由是,能用萬用表解決的問題,就不要把它復(fù)雜化。
1756-TBS6H cpu
100-C37T01 |
100-C37T10 |
100-C37UD00 |
100-C37UD10 |
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100-C37UKD10 |
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100-C60DJ10 |
100-C60F00 |
100-C60F01 |
100-C60F10 |
100-C60G10 |
100-C60H10 |
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1X00093H04 | 5460-838 | ZX2-XC1R | R88M-GP10030H-BOS2-Z | 0-48680-312 |
1X00093H05 | 5460-839 | ZX2-XC20R | R88M-GP10030H-BO-Z | 0-48680-521 |
1X00093H08 | 5460-840 | ZX2-XC4R | R88M-GP10030H-BS2-Z | 0-48680-530 |
1X00093H09 | 5460-841 | ZX2-XC9R | R88M-GP10030H-B-Z | 0-48680-532 |
1X00095H01 | 5460-842 | ZX-CAL2 | R88M-GP10030H-OS2-Z | 0-48681 |
1X00097H01 | 5460-843 | ZX-ED01T | R88M-GP10030H-O-Z | 0-49001 |
1X00102H01 | 5460-844 | ZX-ED02T | R88M-GP10030H-S2-Z | 0-49001-1 |
1X00133H01 | 5461-002 | ZX-EDA11 2M | R88M-GP10030H-Z | 0-49001-10 |
1X00161H01 | 5461-062 | ZX-EDA41 2M | R88M-GP10030L | 0-49001-11 |
1X00185H01 | 5461-082 | ZX-EDR5T | R88M-GP10030T-BOS2-Z | 0-49001-12 |
1X00188H01 | 5461-083 | ZX-EM02HT | R88M-GP10030T-BO-Z | 0-49001-13 |
1X00377H01 | 5461-086 | ZX-EM02T | R88M-GP10030T-BS2-Z | 0-49001-14 |
1X00415H01 | 5461-088 | ZX-EM02T-S | R88M-GP10030T-B-Z | 0-49001-15 |
1X00474G01 | 5461-117 | ZX-EM07M | R88M-GP10030T-OS2-Z | 0-49001-2 |
1X00474G02 | 5461-290 | ZX-EM07M-S | R88M-GP10030T-O-Z | 0-49001-5 |
1X00480G01 | 5461-292 | ZX-EM07MT | R88M-GP10030T-S2-Z | 0-49002 |
3A99132G01 | 5461-331 | ZX-EV04T | R88M-GP10030T-Z | 0-49002-1 |
3A99141G01 | 5461-639 | ZX-GIF11 | R88M-GP20030H-BOS2-Z | 0-49002-2 |
3A99158G02 | 5461-640 | ZX-GIF11A | R88M-GP20030H-BO-Z | 0-49003 |
3A99199G01 | 5461-641 | ZX-GIF41 | R88M-GP20030H-BS2-Z | 0-49004 |
3A99200G02 | 5461-642 | ZX-GIF41A | R88M-GP20030H-B-Z | 0-49005 |
3A99245G01 | 5461-643 | ZX-GSW11 | R88M-GP20030H-OS2-Z | 0-49005-1 |
3A99266G01 | 5461-644 | ZX-GT2840S11 | R88M-GP20030H-O-Z | 0-49005-4 |
3A99419G03 | 5461-646 | ZX-GT2840S41 | R88M-GP20030H-S2-Z | 0-49005-5 |
3A99419G06 | 5461-647 | ZX-GT28S11 | R88M-GP20030H-Z | 0-49006 |
3A99989G09 | 5461-648 | ZX-GT28S41 | R88M-GP20030T-BOS2-Z | 0-49007 |
3A99989H06 | 5461-650 | ZX-GTC11 | R88M-GP20030T-BO-Z | 0-49007-4 |
3A99989H07 | 5461-651 | ZX-GTC41 | R88M-GP20030T-BS2-Z | 0-49008-1 |
3A99989H13 | 5461-652 | ZX-LD100 | R88M-GP20030T-B-Z | 0-49008-2 |
4D33888G01 | 5461-653 | ZX-LD100L | R88M-GP20030T-OS2-Z | 0-49008-3 |
4D33900G19 | 5461-654 | ZX-LD300 | R88M-GP20030T-O-Z | 0-49008-4 |
4D33934G01 | 5461-655 | ZX-LD300L | R88M-GP20030T-S2-Z | 0-49008-9 |
4D33935H01 | 5461-656 | ZX-LD30V | R88M-GP20030T-Z | 0-49009 |
4D33942G02 | 5461-659 | ZX-LD30VL | R88M-GP40030H-BOS2-Z | 0-49009-12 |
4D33945G01 | 5461-661 | ZX-LD40 | R88M-GP40030H-BO-Z | 0-49009-13 |
5A22410H01 | 5461-768 | ZX-LD40L | R88M-GP40030H-BS2-Z | 0-49009-14 |
5A22410H02 | 5461-769 | ZX-LD40L 2M | R88M-GP40030H-B-Z | 0-49010-1 |
5A22411H01 | 5461-770 | ZX-LDA11 2M | R88M-GP40030H-OS2-Z | 0-49011-11 |
5A22412H01 | 5461-771 | ZX-LDA11-01 2M | R88M-GP40030H-O-Z | 0-49011-12 |
5A22727G02 | 5461-772 | ZX-LDA11-N 2M | R88M-GP40030H-S2-Z | 0-49011-6 |
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5A22971G01 | 5461-774 | ZX-LDA41-01 2M | R88M-GP40030T-BOS2-Z | 0-49011-7 |
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5A22982G02 | 5461-776 | ZX-LT001 | R88M-GP40030T-BS2-Z | 0-49012 |
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,bently (本特利)