cpu 800T-N60G
.功能與參數(shù)測試
1.<測試儀>對器件的檢測,僅能反應(yīng)出截止區(qū),放大區(qū)和飽和區(qū).但不
能測出工作頻率的高低和速度的快慢等具體數(shù)值等.
2.同理對TTL數(shù)字芯片而言,也只能知道有高低電平的輸出變化.而無
法查出它的上升與下降沿的速度.
四.晶體振蕩器
1.通常只能用示波器(晶振需加電)或頻率計測試,萬用表等無法測量,
否則只能采用代換法了.
2.晶振常見故障有:a.內(nèi)部漏電,b.內(nèi)部開路c.變質(zhì)頻偏d.外圍相連電
容漏電.這里漏電現(xiàn)象,用<測試儀>的VI曲線應(yīng)能測出.
3.整板測試時可采用兩種判斷方法:a.測試時晶振附近既周圍的有關(guān)
芯片不通過.b.除晶振外沒找到其它故障點.
4.晶振常見有2種:a.兩腳.b.四腳,其中第2腳是加電源的,注意不可隨
意短路.
五.故障現(xiàn)象的分布
1.電路板故障部位的不完全統(tǒng)計:1)芯片損壞30%, 2)分立元件損壞30%,
3)連線(PCB板敷銅線)斷裂30%, 4)程序破壞或丟失10%(有上升趨勢).
2.由上可知,當(dāng)待修電路板出現(xiàn)聯(lián)線和程序有問題時,又沒有好板子,既
不熟悉它的連線,找不到原程序.此板修好的可能性就不大了.
cpu 800T-N60G
| 800T-N534KK4AAEE |
| 800T-N561KF4 |
| 800T-N60A |
| 800T-N60B |
| 800T-N60G |
| 800T-N60R |
| 800T-N60W |
| 800T-N6103KF4DEEE |
| 800T-N6103KF4NAXX |
| 800T-N6103KP4ADXX |
| 800T-N6103KP4EAXJ |
| 800T-N6104KF4AAGX |
| 800T-N6104KF4DDMX |
| 800T-N6104KF4EAXX |
| 800T-N6104KM4C |
| 800T-N6105KF4EAXX |
| 800T-N6105KF4JAEX |
| 800T-N6105KN4DADN |
| 800T-N6112KF4BBBB |
| 800T-N6126KF4BXXX |
| 800T-N61A |
| 800T-N61B |
| 800T-N61G |
| 800T-N61KF4 |
| 800T-N61KF4AACA |
| 800T-N61KF4AAEX |
| 800T-N61KF4AAJG |
| 800T-N61KF4AAXD |
| 800T-N61KF4ADAM |
| 800T-N61KF4ADXX |
| 800T-N61KF4AENX |
| 800T-N61KF4AMXX |
| 800T-N61KF4ANXX |
| 800T-N61KF4B |
| 800T-N61KF4BAAA |
| 800T-N61KF4BDEE |
| 800T-N61KF4BEGA |
| 800T-N61KF4BV |
| 800T-N61KF4C |
| 800T-N61KF4CAEN |
| 800T-N61KF4CAEX |
| 800T-N61KF4CALX |
| 800T-N61KF4CAXD |
| 800T-N61KF4CAXX |
| 800T-N61KF4CDXX |
| 800T-N61KF4CNNA |
| 800T-N61KF4DAXD |
| 800T-N61KF4DAXX |
| 800T-N61KF4DDDD |
| 800T-N61KF4DDEE |
| 800T-N61KF4DDGX |
| 800T-N61KF4DMGX |
| 800T-N61KF4EAXA |
| 800T-N61KF4EAXX |
| 800T-N61KF4EEDD |
| 800T-N61KF4EXGX |
| 800T-N61KF4JAXX |
| 800T-N61KF4JDEX |
| 800T-N61KF4JJJG |
| 800T-N61KF4MAXX |
| 800T-N61KF4MCXC |
| 800T-N61KF4NANA |
| 800T-N61KF4NAND |
| 800T-N61KF4NAXA |
| 800T-N61KF4NAXL |
| 800T-N61KF4NAXX |
| 800T-N61KF4NNMM |
| 800T-N61KG4AMAX |
| 800T-N61KG4BXXX |
| 800T-N61KG4CCXX |
| 800T-N61KG4DAXG |
| 800T-N61KG4JAXA |
| 800T-N61KG4JCXX |
| 800T-N61KG4MAXE |
| 800T-N61KK4BBXX |
| 800T-N61KK4EEXX |
| 800T-N61KM4AAMA |
| 800T-N61KM4CAXD |
| 800T-N61KM4JAXX |
| 800T-N61KN4 |
| 800T-N61KN4ADXX |
| 800T-N61KP4 |
| 800T-N61KP4AAEN |
| 800T-N61KP4ADAA |
| 800T-N61KP4ADEG |
| P0951CL-H |
| P0951CP |
| P0951CQ |
| FBM237 |
| P0951CR |
| P0951CT-A |
| P0951DK |
| P0951EA FBC07 |
| P0960GC WP30 |
| P0960JA CP40 |
| P0970BM-B |
| P0970JE-0A |
| P0970WX |
| P0971PE-B |
| P0971UN |
| PM400YD FBM03 |
| P0914XA |
| FBM223 |
| FBM203 P0914SV |
| FBM205 P0914XG |
| FBM207 P0914TD |
| FBM211 P0914TN |
| FBM217 P0914TR |
| FBM242 P0916TA |
| FCM10EF P0916CP |
| FCM10E P0914YM |
| FBM204 P0916AG |
| FBM206 |
| FBM201 |
| CP40B P0961BC |
| CP60 P0961FR |
| FB110E P0972AJ |
| FBM01 P0400DA |
| FBM02 P0400YC |
| FBM03 P0400YD |
| FBM04 P0400YE |
| FBM07 CM400YH |
| FBM08 CM400YJ |
| FBM10 CM400YL |
| FBM11 CM400YM |
| FBM18 P0400YV |
| FBM203 P0914SV |
| FBM241C P0914WM |
| FBM39 P0902UT |
| FBM41 P0902XA |
| FBM43 P0950BM |
| FBM44 P0950BN |
| CM902WL |
| P0914XB |
| P0916FK |
| P0916JW |
