Axpert Max 7200 - Check INV Full Bridge Components

维修手册
专案名称：
Axpert Max 7200-48
专案编号：
P1911061
修订版次：
00
PAGE
V-RDP-004-73 A
Drivers (This part is only used for repair checking)
The R124/R128 are (10R 1206)
The R125/R134 are (47R 1206)
The D38/D40 are (1N4148W 0.15A 75V SMD)
Parts Attribute Reference values Failure status
R125/R134 Resistor 47 ohm Open or other values
R124/R128 Resistor 10 ohm
D38/D40
1
Resistor + to -: 240k
- to +: OL
Short or explosion
Diode + to -: 0.6V
- to +: OL
Note1: When test the diode; please remove the R124/R128 from the board, otherwise the
test result is not right.
3.4 Check the INV full bridge on MAIN board
Power devices
INV IGBT: QA1/QA2/QC1/QC2/QB2/QB3/QD2/QD3