HP 7925D Service Manual page 9

SAFETY CONSIDERATIONS
KEEP WITH MANUAL
GENERAL - This product and related documentation
must be reviewed for familiarization with safety mark-
ings and instructions before operation.
BEFORE APPLYING POWER - Verify that the
product is configured to match the available main
power source per the input power configuration in-
structions provided in this manual.
SAFETY SYMBOLS
SAFETY EARTH GROUND - This is a safety class I
product and is provided with a protective earthing ter-
minal. An uninterruptible safety earth ground must
be provided from the main power source to the product
input wiring terminals, power cord, or supplied power
cord set. Whenever it is likely that the protection has
been impaired, the product must be made inoperative
and be secured against any unintended operation.
I CAUTION
I
The CAUTION sign denotes a
. . hazard. It calls attention to an
operating procedure, practice, or
the like, which, if not correctly
performed or adhered to, could re-
sult in damage to or destruction
of part or all of the product. Do
not proceed beyond a CAUTION
sign until the indicated condi-
tions are fully understood and
met.
7
..L
WARNING
Instruction manual symbol: the
product will be marked with this
symbol when it is necessary for
the user to refer to the instruction
manual in order to protect the
product against damage.
Indicates hazardous voltages.
Indicates earth (ground) terminal.
The WARNING sign denotes a
hazard. It calls attention to a pro-
cedure, practice, or the like,
which, if not correctly performed
or adhered to, could result in in-
jury. Do not proceed beyond a
WARNING sign until the indi-
cated conditions are fully under-
stood and met.
If this product is to be energized via an auto-
transformer (for voltage reduction) make sure the com-
mon terminal is connected to the earth terminal of the
main power source.
SERVICING
WARNING
Any servicing, adjustment, main-
tenance, or repair of this product
must be performed only by service-
trained personnel.
Adjustments described in this
manual "may be performed with
power supplied to the product
while protective covers are re-
moved. Energy available at many
points may, if contacted, result in
personal injury.
Capacitors inside this product
may still be charged even when
disconnected from its power
source.
To avoid a fire hazard, only fuses
with the required current rating
and of the specified type (normal
blow, time delay, etc.) are to be
used for replacement.
To install or remove a fuse, first
disconnect the power cord from
the device. Then, using a small
screwdriver, turn the fuseholder
cap counterclockwise until the
cap releases. Install the proper
fuse in the cap -:- either end of the
fuse can be installed in the cap.
Next, install the fuse and fuse-
holder cap in the fuseholder by
pressing the cap inwards and then
turning it clockwise until it locks
in place.
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