6.4. THE DISPLAY FAILS TO ILLUMINATE
Does the main v oltage (110-220
Vac) is at the input of the machine
and the circuit brakers are ok?
Are the 2 LEDs on the
rear side of the display
board on?
Bring the main voltage
to the inlet socket of
the machine and/or
check the circuit
brakers
THE DISPLAY
FAILS TO
ILLUMINATE
NO
YES
NO
YES
1
2
Are the 2 LEDs of +5 Vdc
and +12Vdc, on the driver
on?
Replace the display
board
Replace the driver
NO
YES
3
5
Is the main voltage to the
input of the driver?
YES
4
Check the cables.
NO
ONLY
110Vac VERSION
SI
Is the 220Vac v oltage to
the output of the
Autotransf ormer?
6
Replace the
autotransformer
NO
A
YES
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