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. )L __________ ~::........:===:5w_-t: ....J1+-+vOHlaae Selector Switches Light Pen Fuses ·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.