Maintenance Guide Part 1

NeTIS MAINTENANCE GUIDE – Version 1.1 33/139
3.5.1 G ENERAL POWER FAULT
No indicators on:
Check the general fuse located to the rear on the main power input block
Check that there is 220V
Check the position of the switch located on the rear face
If everything is correct:
Unplug the power supply module
Disconnect the auxiliary mains supply cable from the module
Check for 220V on this disconnected connector
If everything is correct: the power supply module is out of order
Otherwise the internal mains wiring or the switch or the mains filter are
defective
Only the 220v indicator is on the power supply module:
Unplug the power supply module
Power off and on again
If the indicators turn on again there is either a short circuit on a power supply, or all the
circuits were put on stand-by following a general power surge.
One or mode indicators on the power supply module are off:
Turn off the switch
Wait for a few seconds
Turn the appliance back on
If the indicators are back on: it was a power overload that caused the corresponding power
circuit to switch to safety mode, check consumption
If the fault persists, turn the appliance off and unplug all the modules using the defective
voltage;
Turn the appliance back on
If the fault persists, the power supply module is defective.
If the fault disappears, plug in the removed modules one by one (powering off between each
one) in order to isolate the defective module
3.5.2 P OWER FAULT ON MODULE
The power supply indicator on the module stays off even though the 5 volt indicator is on the
power supply module:
Each module has a fuse soldered to the 5 volt input, close to the 96 point Europe connector. If
this fuse is broken, it is possible to replace it and closely watch when powering back on; if the
fuse breaks again, the module must be returned for repair.
Some modules also have fuses on other voltages; when these fuses break it is not shown by
the power supply indicator (which only indicates the presence of a +5 volt power supply).