歡迎咨詢ZEN-10C3DR-D-V2 卡件 一覽表2022已更新(今日/資訊)
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,工作起來照樣事倍功半。那么,怎樣做才能提高維修效呢?根據我公司進口設備維修中心統計出來的資料,應遵循以下幾個步驟、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
當手拿一塊待修的電路板,良好的習慣首先是應對其進行目測,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、場效應管、撥段開關等分力元件,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,就不要把它復雜化。
歡迎咨詢ZEN-10C3DR-D-V2 卡件 一覽表2022已更新(今日/資訊)
NS15-KBA04 | R88M-G6K010T-BOS2-Z |
NS15-TX01B-V2 | R88M-G6K010T-BO-Z |
NS15-TX01S-V2 | R88M-G6K010T-BS2-Z |
DRT2-ID16/OD16 | R88M-G6K010T-B-Z |
ZEN-10C1AR-A-V2 | R88M-G6K010T-OS2-Z |
ZEN-10C1DR-D-V2 | R88M-G6K010T-O-Z |
ZEN-10C1DT-D-V2 | R88M-G6K010T-S2-Z |
ZEN-10C2AR-A-V2 | R88M-G6K010T-Z |
ZEN-10C2DR-D-V2 | R88M-G75030H-BOS2-Z |
ZEN-10C2DT-D-V2 | R88M-G75030H-BO-Z |
ZEN-10C3AR-A-V2 | R88M-G75030H-BS2-Z |
ZEN-10C3DR-D-V2 | R88M-G75030H-B-Z |
ZEN-10C4AR-A-V2 | R88M-G75030H-OS2 |
ZEN-10C4DR-D-V2 | R88M-G75030H-OS2-Z |
ZEN-20C1AR-A-V2 | R88M-G75030H-O-Z |
ZEN-20C1DR-D-V2 | R88M-G75030H-S2-Z |
ZEN-20C1DT-D-V2 | R88M-G75030H-Z |
ZEN-20C2AR-A-V2 | R88M-G75030T-BOS2-Z |
ZEN-20C2DR-D-V2 | R88M-G75030T-BO-Z |
ZEN-20C2DT-D-V2 | R88M-G75030T-BS2-Z |
ZEN-20C3AR-A-V2 | R88M-G75030T-B-Z |
ZEN-20C3DR-D-V2 | R88M-G75030T-OS2-Z |
ZEN-8E1AR | R88M-G75030T-O-Z |
ZEN-8E1DR | R88M-G75030T-S2-Z |
ZEN-8E1DT | R88M-G75030T-Z |
ZX1-LD100A61 2M | R88M-G7K515H-BOS2-Z |
ZX1-LD100A61 5M | R88M-G7K515H-BO-Z |
ZX1-LD100A66 0.5M | R88M-G7K515H-BS2-Z |
ZX1-LD100A81 2M | R88M-G7K515H-B-Z |
ZX1-LD100A81 5M | R88M-G7K515H-OS2-Z |
ZX1-LD100A86 0.5M | R88M-G7K515H-O-Z |
ZX1-LD300A61 2M | R88M-G7K515H-S2-Z |
ZX1-LD300A61 5M | R88M-G7K515H-Z |
ZX1-LD300A66 0.5M | R88M-G7K515T-BOS2-Z |
ZX1-LD300A81 2M | R88M-G7K515T-BO-Z |
ZX1-LD300A81 5M | R88M-G7K515T-BS2-Z |
ZX1-LD300A86 0.5M | R88M-G7K515T-B-Z |
ZX1-LD50A61 2M | R88M-G7K515T-OS2-Z |
ZX1-LD50A61 5M | R88M-G7K515T-O-Z |
ZX1-LD50A66 0.5M | R88M-G7K515T-S2-Z |
ZX1-LD50A81 2M | R88M-G7K515T-Z |
ZX1-LD50A81 5M | R88M-G90010H-BOS2-Z |
ZX1-LD50A86 0.5M | R88M-G90010H-BO-Z |
ZX1-LD600A61 2M | R88M-G90010H-BS2-Z |
ZX1-LD600A61 5M | R88M-G90010H-B-Z |
ZX1-LD600A66 0.5M | R88M-G90010H-OS2-Z |
ZX1-LD600A81 2M | R88M-G90010H-O-Z |
ZX1-LD600A81 5M | R88M-G90010H-S2-Z |
ZX1-LD600A86 0.5M | R88M-G90010H-Z |
ZX2-CAL | R88M-G90010T-BOS2-Z |
ZX2-LD100 0.5M | R88M-G90010T-BO-Z |
ZX2-LD100L 0.5M | R88M-G90010T-BS2-Z |
ZX2-LD50 0.5M | R88M-G90010T-B-Z |
ZX2-LD50L 0.5M | R88M-G90010T-OS2-Z |
ZX2-LD50V 0.5M | R88M-G90010T-O-Z |
ZX2-LDA11 2M | R88M-G90010T-S2-Z |
ZX2-LDA41 2M | R88M-G90010T-Z |
ZX2-XC1R | R88M-GP10030H-BOS2-Z |
ZX2-XC20R | R88M-GP10030H-BO-Z |
ZX2-XC4R | R88M-GP10030H-BS2-Z |
ZX2-XC9R | R88M-GP10030H-B-Z |
ZX-CAL2 | R88M-GP10030H-OS2-Z |
ZX-ED01T | R88M-GP10030H-O-Z |
ZX-ED02T | R88M-GP10030H-S2-Z |
ZX-EDA11 2M | R88M-GP10030H-Z |
ZX-EDA41 2M | R88M-GP10030L |
ZX-EDR5T | R88M-GP10030T-BOS2-Z |
ZX-EM02HT | R88M-GP10030T-BO-Z |
ZX-EM02T | R88M-GP10030T-BS2-Z |
ZX-EM02T-S | R88M-GP10030T-B-Z |
ZX-EM07M | R88M-GP10030T-OS2-Z |
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