Operating Manual
Matrix
Copyright Silca 2012
36
10.7 CHECKING AND REPLACING FUSES
Fuses should be checked with an instrument for measuring continuity (tester, ohmeter, multimeter, etc.) as they
may appear normal to the eye even when electrically damaged. Each fuse must be replaced with one of the same
value (Amperes) and type (rapid or delayed), as shown in the manual. The MATRIX key-cutting machine has:
2 fuses:
2,5 Amperes rapid on the 230 Volt key-cutting machine.
6,3 Amperes rapid on the 100/120 Volt key-cutting machine
located in the mains socket, they protect the machine from voltage
variations and possible short circuits.
If the machine does not go on when the switch is activated, it is
advisable to check the fuses in the way described:
1) Turn off the machine with switch (P) and disconnect the power
lead.
2) Use a screwdriver to remove the fuses.
Fig. 67
1 fuse:
500 mA rapid
situated on the terminal board, it protects the calibration keypad circuit board from possible short circuiting. Check
the fuse when the blue LED does not illuminate with the machine on (circuit board not powered).
Follow the instructions below:
1) Turn off switch (P) and detach the power lead.
2) Place the key-cutting machine on its back and loosen the 4 screws (P4) to remove the bottom safety plate (Fig.
1) Take the fuse out of its seat (V3) (Fig. 68 and Fig. 69).
2) Replace and secure the bottom safety plate with the 4 screws (P4).
3) Return the key-cutting machine to its proper position.
Fig. 68
Fig. 69
