HP Integrity rx7620 Server - User Service Guide, Sixth Edition

Figure 4-3 HP Integrity rx7620 Server - DC Power Input
WARNING! Voltage is present at various locations within the server whenever a power source
is connected. This voltage is present even when the main power switch is in the off position.
Failure to observe this warning can result in personal injury or damage to equipment.
NOTE: System firmware prevents booting when a single power cord configuration is detected.
AC Voltage Check
This section provides voltage check information for use on the customer site. The emphasis
focuses on measuring the voltages at the power cord plug end specified as an IEC 320 C19 type
plug. This end plugs directly into the back of the HP Integrity rx7620 Server chassis.
NOTE: These procedures must be performed for each power cord that will be plugged directly
into the back of the HP Integrity rx7620 Server. If the expected results from this procedure are
not observed during the voltage check, see “AC Voltage Check (Additional Procedure)” (page 59)
Voltage Range Verification of Receptacle
This measures the voltage between L1 and L2, L1 to ground, and L2 to ground. Three separate
measurements are performed during this procedure. For voltage reference points when performing
the following measurements, see Figure 4-4.
AC Voltage Check 57