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7.
APPENDIX
7.1.
Primary AC voltage selection
Primary section of the HV transformer is switchable for three values of AC voltage (220, 230, 240V)
Factory settings is 230VAC. Before first starting the PA we recommend checking that the correct value is
selected according to the AC voltage in your network.
Side view on the opened OM4001HF
HV supply board
AC Selector
SW ON board
HV Transformers
Remove the upper lid first. On the right side of the PA, there are two PCBs mounted. On the right upper
side is Switch ON board where AC selector is
located.
There are AC selector for each transformer.
The blue wire – one side of primary winding
is conected to N pole. Wire marked with
proper voltage connect to L pole.
Type of supported TCVR and working
frequency are visible on the display.
AUTO LED is ON.
