Step 1
1. Switch off power to the system installed in the rack. Refer to the service guide
for the CPU enclosure installed in your rack for more information.
2. Switch off power to all devices and drawers in the rack. Refer to the service
guide for the drawers installed in your rack for more information.
3. Switch off power to all external devices attached to the system unit. Refer to the
service guide for the drawers installed in your rack for more information.
4. Remove the six screws attaching the PDP top cover to the PDP, and then
remove the top cover.
5. Using a multimeter, attach the black multimeter cable lead to the return bus bar
(+), and then attach the red multimeter cable lead to the -48 V DC bus bar (-).
6. Measure for -40 to -60 V dc between the -48 V DC bus bar (upper bar) and the
return bus bar (lower bar) in the power distribution panel.
Was the correct voltage present?
NO Check the customer power source for the correct voltage, and check the
external power cables (from customer's power source) for continuity.
YES Go to Step 2.
5-4 7014 Model S00 Rack Installation and Service Guide
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