Product data

Checking the Grounding of the 2104
Go to the appropriate subsection for the 2104 that you are servicing.
Grounding Check (2104 Model DU3)
1. Refer to Figure 16.
2. Ensure that all power is removed from the rack (see the Installation and Service
Guide, or equivalent, for the rack or using system).
3. Ensure that the power cables 1 are plugged into each fan-and-power-supply
assembly. Ensure also that the other ends of the power cables are plugged into
the power distribution unit or battery-backup unit in the rack (see the Installation
and Service Guide, or equivalent, for the rack or using system).
4. Attention: Some electrical circuits could be damaged if the external SCSI cables
are present at the 2104 while the grounding check is being done.
Ensure that no external SCSI cables are present at the connectors 2.
Figure 16. Power Cables and SCSI Connectors (2104 Model DU3)
32 2104 Service Guide