Figure 4-2 Safety Ground Reference Check - Single Power Source - HP Integrity rx8620 User's & Service Manual
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Cabling and Power Up
Voltage Check
Safety Ground Verification (Single Power Source)
This procedure measures the voltage level between A0 and A1. The voltage level between B0 and
B1 will also be verified. All measurements will be taken between ground pins. Refer to Figure 4-2
for ground reference points when performing these measurements.
Figure 4-2 Safety Ground Reference Check - Single Power Source
Step 1. Measure the voltage between A0 and A1. Take the AC voltage down to the lowest scale on the volt
meter. One probe is inserted into the ground pin for A0. The other probe is inserted into the ground
pin for A1. Verify that the measurement is between 0–5 VAC. If the measurement is 5 V or greater,
escalate the situation. Do not attempt to plug the power cords into the server cabinet.
Step 2. Measure the voltage between B0 and B1. Take the AC voltage down to the lowest scale on the volt
meter. One probe will be inserted into the ground pin for B0. The other probe will be inserted into
the ground pin for B1. Verify that the measurement is between 0–5 VAC. If the measurement is 5 V
or greater, escalate the situation. Do not attempt to plug the power cords into the server cabinet.
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Step 1
V
GND
L1
L2
A0
Step 2
V
GND
L1
L2
B0
GND
L1
L2
A1
GND
L1
L2
B1
Chapter 4
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