Silca MARKER 2000 - 3 fuses: F1, F2 and F3

Operating manual - English MARKER 2000
Copyright Silca 2002 41
• 3 fuses: F1, F2 and F3
F1 = 1 Amps delayed
protects the +24Vdc for all input/output signals and laser tracking.
F2 = 2 Amps delayed
protects the +5Vdc required for operation of the microprocessor.
F3 = 4 Amps delayed
protects the +34Vdc for the step motor and magnet.
situated on the electronic board housed in the base. They protect the board from short circuits. Proceed
as follows:
1) turn off the master switch and dis-
connect all the wiring to the ma-
chine.
2) turn the machine on its back and re-
move the four screws (U1) securing
the bottom plate (U), which can
then be taken off (fig. 39).
3) check and, if necessary, replace
the fuses, as follows:
to remove the fuse :
exert finger pressure on the fuse and
turn anticlockwise (fig. 40).
to fit the new fuse:
take care to position the fuse properly,
then push in and turn clockwise.
Fig. 39
Fig. 40
U
U 1
2
3
13
456789
12
11
10
F3
F2
F1
1