FORMA: Service & Maintenance manual - rev. 3.0
Page 6.4
Is the mains voltage present at
the output of the mains plug?
7
Replace the mains plug
of the machine
B
YES
NO
8
9
Is the mains voltage present at
the input to the filter?
10
NO
Replace the cable
FR-1/A
Is the mains voltage present at
the output of the filter?
NO
Replace the filter
YES
Is the mains voltage present at
the connector CN39?
YES
NO
Replace the cable FR-2
Replace the cable
FR-3/L
YES
Follow the procedure step by step to correctly diagnose the problem. Take particular care with the
checks highlighted by circled numbers, which are described in detail below:
WARNING: Carry out these checks with the machine powered up.
(1) Lift connector CN1 slightly from the power supply. Place the tester probes between pins 4 and
6 on the same connector. The measured voltage should be 220 VAC.
(2) Lift connector CN2 slightly from the power supply, in order to reach the pins with the tester
probes. Check that all the output voltages of the power supply are correct, referring to
paragraph 2.5. .
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