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For Model 7910H:
a. Set voltage select switch
on rear panel
for proper voltage.
b. Verify that fuse rating is correct for selected voltage indicated on rear panel.
For Model 2631 B:
The receptacle for the power cord also contains a fuse and a printed circuit card figure 2-2
that is used to select one of four line voltages. The proper voltage selection is normally done
at the factory, but changes are easily accomplished by changing the position of the printed
circuit card. If it becomes necessary to change the input supply voltage, do the following:
a. Remove the power cable if it is installed.
b. Slide the cover over the fuse into the area of the power cable connection.
c. Move the fuse release lever and remove the fuse.
d. Using a pointed tool, such as a scribe, remove the card by the small hole that is
exposed near the outer edge.
e. The card can be installed in four different ways as indicated by the voltages ranges;
i.e., 100,120,220, and 240. Select the proper voltage and insert the card so the selected
voltage can be read on the card when viewed from the rear of the unit.
f.
Reseat the fuse release lever and reinsert the 2.5A fuse.
g. Slide the cover back over the fuse and card area; this exposes the cable connection.
h. Connect power cable to the unit.
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