Hi,
When on ground with the a340 de-energized and press and hold emer gen test (push button with black guard) it doesn´t do the test, nothing happen and its is suposed to do, to check static inverter etc.
When startup aircraft on batteries, when pressing and hold the apu page for example it doesnt replicate properly, press and hold for a while what happen is System display take control of engine display, this is not true on real one, all of these only in batteries, you should take a look at it.
best regards.