IBM 7133 Series, Руководство по обслуживанию

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Checking the Grounding of the 7133
| This section has three parts:
| “Grounding Check (Models 010 and 020 with 220 V Fan-and-Power-Supply
| Assemblies)”
| “Grounding Check (Model 020 with
−
48 V Fan-and-Power-Supply Assemblies)” on
| page 1-64
| “Grounding Check (Models 500 and 600)” on page 1-68.
| Go to the part that is relevant to the 7133 you are servicing.
|
Grounding Check (Models 010 and 020 with 220 V
|
Fan-and-Power-Supply Assemblies)
1
Ensure that all power is removed from the rack (see the Installation and Service
Guide for the using system).
2
Ensure that the power cable
1
is plugged into each fan-and-power-supply
assembly. Ensure also that the other end of the power cable is plugged into the
power distribution unit or battery-backup unit in the rack (see the Installation and
Service Guide for the using system).
3
Attention: Some electrical circuits could be damaged if the external SSA cables or
power-control cables are present at the 7133 while the grounding check is being
done.
Ensure that no external SSA cables are present at the eight connectors
2
.
4
If the 7133 has a Remote Power On Control feature, go to step 5 on page 1-63.
Otherwise, go to step 6 on page 1-63.
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7133 Service Guide