HP 9845B/C CE Handbook page 24

2-10
9845B/C Environmental, Installation, and Preventive Maintenance Requirements
The 9845C mainframe and CRT each has its own power cord connector and fuse. The main-
frame has one voltage selector switch and the CRT has two. These are located on the rear
panels of the CRT and mainframe, as shown.
Light Pen
Fuses
)L _ _ _ _ _ _ _ _ _ _ ~::........:===:5w_-t:
....J1+-+vOHlaae Selector Switches
·i"·s;n"~1II
TO AVOID THE POSSIBILITY OF SERIOUS INJURY, DIS-
CONNECT THE AC POWER CORD(S) BEFORE REMOVING OR
INSTALLING A FUSE.
A different fuse is required for each of the two voltage ranges of 120 Vac and 240 Vac. The
proper types and ratings are shown in this table.
Voltage Fuse Part
Rating Rating Number
100.120 10 NB 2110-0051
220.240 6 NB 2110-0056
Always be sure that the correct fuse is installed. Failure to do so may result in damage to the
computer. When changing a fuse, make sure that the replacement is the proper rating and type.
The previous drawings show the location of the fuse(s) on the System 45. (The 98458 has one
fuse, the 9845C has two fuses.) To change a fuse, first disconnect the power cord(s) from the
computer.