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How to check IPM
4. Trouble shooting.
1
2
3
4
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 just check one of IPM because it is parallel.
Æ
if no problems, check 15V(Y,Z B/D) with GND,
Î
Forward value 0.3V,
Reverse value infinite. If no problems,
