Cabling And Powering On The Server; Checking The Voltage; Verifying The Voltage Range Of The Recptacle; Voltage Reference Points For Iec-320 C19 Plug - HP 9000 Integrity rp8440 Installation Manual

are chosen the OS may fail to boot or will boot with output directed to the wrong location.
Therefore, any time new potential console devices are added to the system or anytime NVRAM
on the system is cleared console selections should be reviewed to ensure that they are correct.

Cabling and Powering On the Server

After the system has been unpacked and moved into position, it must be connected to a source
of AC power. The AC power must be checked for the proper voltage before the system is powered
up. This chapter describes these activities.

Checking the Voltage

This section provides voltage check information for use on the customer site. The emphasis is
on measuring the voltages at the power cord plug end specified as an IEC-320 C19 type plug.
This is the end that plugs directly into the back of the server cabinet.
NOTE:
Perform these procedures for each power cord that will be plugged directly into the
back of the server cabinet. If you do not obtain the expected results from this procedure during
the voltage check, refer to the section titled

Verifying the Voltage Range of the Recptacle

Use this procedure to measure the voltage between L1 and L2, L1 to ground, and L2 to ground.
Refer to Figure 2-22
Figure 2-22 Voltage Reference Points for IEC-320 C19 Plug
IMPORTANT:
1. Measure the voltage between L1 and L2. This is considered to be a phase-to-phase
measurement in North America. In Europe and certain parts of Asia-Pacific, this measurement
is referred to as a phase-to-neutral measurement. The expected voltage should be between
200–240 V AC regardless of the geographic region.
2. Measure the voltage between L1 and ground. In North America, verify that this voltage is
between 100–120 V AC. In Europe and certain parts of Asia-Pacific, verify that this voltage
is between 200–240 V AC.
3. Measure the voltage between L2 and ground. In North America, verify that this voltage is
between 100–120 VAC. In Europe and certain parts of Asia-Pacific, verify that this voltage
is 0 (zero) V AC.
Table 2-4 provides single phase voltage measurement examples specific to the geographic region
where these measurements are taken.
62 Installing the System
for voltage reference points when performing the following measurements.
Perform these measurements for every power cord that plugs into the server.
"Voltage Check (Additional Procedure)" (page 65).