User Manual – Rev BE AMETEK Programmable Power
MX Series 239
1) Measure the output voltage with Zero AC volts programmed.
2) Remove any EUT from the output connections.
3) Turn output ON and measure the AC and DC output. It should
be close to zero.
4) If the output reads –225VDC on the low range and close to 0
Vdc on the high range, then it is almost certain that the fuse is
blown and 1 or 2 IGBT devices are shorted.
Note that the measurement screen will not report the DC faulty output voltage
in the AC mode, as the measurements in this mode are AC coupled. Therefore,
it is necessary to measure at the output terminals with a DMM to determine the
actual output. Alternatively, the MX can be switched to AC+DC mode in which
case the internal measurements can be used instead.
If it is determined that it is an amplifier failure, the affected IGBT's need to be
replaced. If no local service support is available, the amplifier may be
exchanged completely. Contact customer service repairs.ppd@ametek.com
for
module exchange information.
7.5 Factory Assistance
If the problem with the cabinet or one of the power modules cannot be isolated,
contact the factory for assistance.
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