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4. Trouble shooting.
How to check IPM
Forward : test 1 GND( ) , Sus-out( )
2 Sus-out( ),Vs( )
3 ER-DN( ),ER-COM( )
4 ER-COM( ),ER-UP( )
when each 4 TEST Diode value is over 0.4V => OK
Reverse : test 1 GND( ) , Sus-out( )
2 Sus-out( ),Vs( )
3 ER-DN( ),ER-COM( )
4 ER-COM( ),ER-UP( )
when each 4 nodes TEST Diode value is infinity => OK
Specially, the value of ER-UP,COM,DN in the Y/Z board, should be
checked all of them. but, the terminal of Vs,Sus-out,GND,
we must aware to know after check one of IPM because it is parallel.
if no problems, check 15V(Y,Z B/D) with GND,
Reverse value infinite. If no problems,
40
Forward value 0.3V,
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