Grounding Requirements; Power Cords; Operating The Plotter - HP 7470A Operator's Manual

is
The 7470A factory equipped with a fuse appropriate to the factory-set
line voltage. To change or inspect the line fuse, turn the fuse holder on
the rear panel in the direction of the arrow (counterclockwise) until the
fuse holder releases. Remove the fuse holder and insert a slo-blo type T
fuse which corresponds with the voltage setting. Fuse values appear
below. Place the fuse holder back into the plotter, and turn the fuse
holder clockwise, while pressing in, until the lock engages and the fuse
remains flush with its casing.
Voltage
100 V or 120 V
220 Vor 240 V
NOTE:
Fuses and fuse caps appropriate to the plotter shipment desti­
nation are installed at the factory. U.S. fuses are
HP 2110-0565 fuse caps. European fuses are 5 X 20 millimetres and use
HP 2110'()567 fuse caps

Grounding Requirements

To protect operating personnel, the plotter must be properly grounded.
The plotter is equipped with a three-conductor power cable which, when
connected to an appropriate power outlet, grounds the plotter. To
preserve this protection feature, do not operate the plotter from a line
power outlet which has no ground connection.

Power Cords

Power cords with different plugs are available for the plotter. The cord
packaged with each plotter depends upon its destination. The power
cords supplied by HP have a standard female plug which mates with
the power-input socket in the plotter. The polarities of the male plugs
shown in the accompanying chart are matched to the line power outlets
used in the indicated areas. If the plotter has the wrong power cord for
the area, please contact your local HP Sales and Support Office or
authorized HP dealer.

Operating the Plotter

Default conditions for most plotting parameters are automatically
established when power is applied to the plotter. These conditions are
optimized to produce quality graphics in a wide range of plotting appli­
cations. Operation of the plotter is therefore simple and primarily con­
sists of loading the pen and medium combination best suited for your
application. If you want special conditions you can override the default
conditions using front-panel controls or programming instructions.
4
V.S. Fuse
0.6AT(SB)/125 V
0.3AT(SB)/250 V
.•
European Fuse
-
0.315AT(SB)/250 V
l'A
X inches and use
'A