WARNING: To reduce the risk of fire, replace fuses only with the
same type and rating.
Both units use a universal switching power supply that handles the full range of nominal
mains voltages between 90 and 264 VAC and any frequency between 50 Hz and 60 Hz.
Check Main Fuse
The Main fuse rating is T 1A L (1 Amp, 250 V, 20 mm, time-lag, low breaking capacity) for
all operating voltages.
WARNING: The power to the unit must be off when the
following steps are performed. Ensure that the main power
cable to the unit is not connected to a power source.
1.
Open the fuse compartment door in the AC power input housing with a
small flat-blade screwdriver (Figure 1). Carefully pull out the fuse carrier.
2.
Check that the replacement fuse has the correct rating. The fuse carrier
must be inserted into the compartment carefully.
Do not force the carrier
into the compartment or both could be damaged.
3.
Snap the fuse compartment door closed.
Figure 1
Checking the Main Fuse
Internal Fuse
The switching power supply contains a separate fuse. Most fault conditions should be
protected by the main fuse.
If you find it necessary to replace the internal fuse, be certain to replace it with a fuse of
the same type and rating as printed on the switching power supply board.
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