IC670MSL640J+IC670MSL640J 好价格

IC670MSL640J
IC670MSL640J
IC670MSL640J





分析与维修:打开机盖没有发现任何烧坏的迹象，在线测量IGBT(7MBR25NF-120)基本判断没有问题，为进一步判断问题，把IGBT拆下后测量7个单元的大功率晶体管开通与关闭都很好。在测量上半桥的驱动电路时发现有一路与其他两路有明显区别，经仔细检查发现一只光耦A3120输出脚与电源负极短路，更换后三路基本一样。模块装上上电运行良好。

SIEMENS SMI-5 5455357 K5004 D66 BOARD

KLA INSTRUMENTS Y-INTERPOLATOR 710-658172-20,710-658097-00 BOARD

KLA INSTRUMENTS X INTERPOLATOR PHASE 3,710-658177-20,FAB 073-658176-00 A0 BOARD

KLA INSTRUMENTS DD BOARD,710-650044-20 REV C4,FAB 073-650043-00 B0

KLA ALIGNMENT PROCESSOR [AP1] PHASE 3 BOARD,710-658036-20,FAB 073-658035-00

KLA INSTRUMENTS Defect Filter BOARD,710-659724-00 REV A0,FAB 073-659724-00 A0

ELECTROGLAS PCB BOARD A14B MATERIAL HANDLER 260331-001 REV E

ELECTROGLAS PCB BOARD A14B MATERIAL HANDLER 260331-001 REV E #1

MIZAR 7140 CPU,MZ7140 7140-K-04-00 REV X17,FAB 6800-07140-5003 REV X3 BOARD

ADC NMIC STN-401000-222-A2, BA4ILMKBAA,BOARD NEW

ADC NMIC STN-201000-000-B2,BAC62Z0FAA,BOARD NEW

KLA MEMORY CONTROLLER PHASE 3 BOARD 710-658232-20 REV C0,FAB 073-658099-00 A0

KLA MEMORY CONTROLLER PHASE 3 BOARD 710-658232-20 REV XF0,FAB 073-658231-00 A0

KLA MEMORY CONTROLLER PHASE 3 BOARD 710-658232-20 REV G0,FAB 073-658231-00 A0

KLA Instruments DF Board 710-658363-20 REV E0,FAB PH 3 073-658362-00 REV C0

KLA Instruments DF Board 710-658363-20,FAB PH 3 073-658362-00 REV A0

KLA INSTRUMENTS RIF BOARD,710-652840-20 REV D3,FAB 073-652839-00 REV B1

KLA INSTRUMENTS RIF BOARD,710-652840-20 REV D2,FAB 073-652839-00 REV B0

KLA INSTRUMENTS Defect Processor BOARD 710-658076-20 B0

KLA INSTRUMENTS BOARD FAB 073-659411-00,700-659411-00