100-K05DJ400處理器
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.
100-K05DJ400處理器
| 100-JE48 |
| 100-K-VPM |
| 100-K05B01 |
| 100-K05B10 |
| 100-K05B400 |
| 100-K05D01 |
| 100-K05D10 |
| 100-K05D300 |
| 100-K05D400 |
| 100-K05DJ01 |
| 100-K05DJ10 |
| 100-K05DJ200 |
| 100-K05DJ400 |
| 100-K05KA10 |
| 100-K05KA300 |
| 100-K05KF01 |
| 100-K05KF10 |
| 100-K05KF200 |
| 100-K05KF300 |
| 100-K05KF400 |
| 100-K05KJ01 |
| 100-K05KJ10 |
| 100-K05KN10 |
| 100-K05KN300 |
| 100-K05KY10 |
| 100-K05WD10 |
| 100-K05WJ10 |
| 100-K05ZA01 |
| 100-K05ZA10 |
| 100-K05ZA10M |
| 100-K05ZA200 |
| 100-K05ZA300 |
| 100-K05ZD10 |
| 100-K05ZD200 |
| 100-K05ZD300 |
| 100-K05ZJ01 |
| 100-K05ZJ10 |
| 100-K05ZJ200 |
| 100-K05ZJ300 |
| 100-K05ZJ400 |
| 100-K05ZS300 |
| 100-K09B10 |
| 100-K09D01 |
| 100-K09D10 |
| 100-K09D300 |
| 100-K09D400 |
| 100-K09DJ01 |
| 100-K09DJ10 |
| 100-K09DJ200 |
| 100-K09DJ300 |
| 100-K09DJ400 |
| 100-K09KA01 |
| 100-K09KA10 |
| 100-K09KA300 |
| 100-K09KF01 |
| 100-K09KF10 |
| 100-K09KF200 |
| 100-K09KF300 |
| 100-K09KF400 |
| 100-K09KG10 |
| 100-K09KJ01 |
| 100-K09KJ10 |
| 100-K09KJ200 |
| 100-K09KJ300 |
| 100-K09KN01 |
| 100-K09KN10 |
| 100-K09KN400 |
| 100-K09KY01 |
| 100-K09KY10 |
| 100-K09KY10M |
| R88A-CAGA010S |
| R88A-CAGA015B |
| R88A-CAGA015S |
| R88A-CAGA020B |
| R88A-CAGA020BR |
| R88A-CAGA020S |
| R88A-CAGA020SR |
| R88A-CAGA050S |
| R88A-CAGB003B |
| R88A-CAGB003BR |
| R88A-CAGB003S |
| R88A-CAGB003SR |
| R88A-CAGB005B |
| R88A-CAGB005BR |
| R88A-CAGB005S |
| R88A-CAGB005SR |
| R88A-CAGB010B |
| R88A-CAGB010BR |
| R88A-CAGB010S |
| R88A-CAGB010SR |
| R88A-CAGB015B |
| R88A-CAGB015BR |
| R88A-CAGB015S |
| R88A-CAGB015SR |
| R88A-CAGB020B |
| R88A-CAGB020BR |
| R88A-CAGB020S |
| R88A-CAGB020SR |
| R88A-CAGB030B |
| R88A-CAGB030BR |
| R88A-CAGB030S |
| R88A-CAGB030SR |
| R88A-CAGB040B |
| R88A-CAGB040BR |
| R88A-CAGB040S |
| R88A-CAGB040SR |
| R88A-CAGB050B |
| R88A-CAGB050BR |
| R88A-CAGB050S |
| R88A-CAGB050SR |
| R88A-CAGC003B |
| R88A-CAGC003S |
| R88A-CAGC020B |
| R88A-CAGD003B |
| R88A-CAGD003BR |
| R88A-CAGD003S |
| R88A-CAGD003SR |
| R88A-CAGD005B |
| R88A-CAGD005BR |
| R88A-CAGD005S |
| R88A-CAGD005SR |
| R88A-CAGD010B |
| R88A-CAGD010BR |
| R88A-CAGD010S |
| R88A-CAGD010SR |
| R88A-CAGD015B |
| R88A-CAGD015BR |
| R88A-CAGD015S |
| R88A-CAGD015SR |
| R88A-CAGD020B |
| R88A-CAGD020BR |
| R88A-CAGD020S |
| R88A-CAGD020SR |
| R88A-CAGD030B |
| R88A-CAGD030BR |
| R88A-CAGD030S |
| R88A-CAGD030SR |
| R88A-CAGD040B |
| R88A-CAGD040BR |
| R88A-CAGD040S |
| R88A-CAGD040SR |
| R88A-CAGD050B |
| R88A-CAGD050BR |
| R88A-CAGD050S |
| R88A-CAGD050SR |
| R88A-CAGE003B |
| R88A-CAGE003S |
| R88A-CAGE005B |
| R88A-CAGE005S |
| R88A-CAGE010B |
| R88A-CAGE010S |
