HP 9845B/C CE Handbook page 25

9845B/C
Environmental, Installation, and Preventive Maintenance Requirements 2-11
Voltage
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ALWAYS DISCONNECT THE COMPUTER FROM Ai'fi AC POW-
ER SOURCE BEFORE SETTING A VOLTAGE SELECTOR
SWITCH.
The 9845B voltage selector switch is located on the rear panel of the mainframe. The 9845C
switches are located on the rear panels of the computer and CRT. To alter the setting of a
switch, slide the switch so that the position of the slot corresponds to the correct voltage, as
previously shown.
CAUTION
CHECK THE SELECTOR SWITCH SETTING BEFORE AP-
PLYING POWER. DAMAGE TO THE COMPUTER WILL OCCUR
IF A SELECTOR SWITCH IS SET TO 110 VOLTS AC AND 220
VOLTS AC IS APPLIED TO THE POWER INPUT CONNECTOR.
Next, ensure that the voltage selector switch (three switches on the 9845C) is set for the
nominal line voltage, as shown here.
98458/C Mainframe
9845C CRT
Switch
Switches
D
110 Vac
Power Cords
0
[jj
110V
[j]
d
110V
220 Vac
220V
220V
110 Vac 220 Vac
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IF IT IS NECESSARY TO REPLACE A POWER CORD, THE RE-
PLACEMENT CORD MUST HAVE THE SAME POLARITY AS THE
ORIGINAL. OTHERWISE A SAFETY HAZARD FROM ELECTRIC-
AL SHOCK TO PERSONNEL, WHICH COULD RESULT IN IN-
JURY OR DEATH, MIGHT EXIST. IN ADDITION, THE EQUIP-
MENT COULD BE SEVERELY DAMAGED IF EVEN A RELATIVE-
L Y MINOR INTERNAL FAILURE OCCURRED.
[JJ
The 9845B has one power cord, and the 9845C has two (one for the mainframe, one for the
CRT). Power cords with different plugs are available for the 9845. The cords(s) packaged with
each computer depends upon where that computer is to be delivered.
Power cords supplied by HP have polarities matched to the power-input socket on the com-
puter:
• L ::: Line or Active Conductor (also called "live" or "hot")
• N ::: Neutral or Identified Conductor
• E ::: Earth or Safety Ground
09845-90039. rev. 4184
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