Step 1521-9
Are all the ac power cables seated firmly and connected correctly from the rack
power distribution unit(s) to the rack drawers?
NO Fix the connection.
This ends the procedure. Go to ″Map 0410: Repair Checkout″ in the
Diagnostics Information for Multiple Bus Systems
.
YES Go to “Step 1521-10”.
Step 1521-10
Follow the ac power cable(s) from the primary I/O drawer to the appropriate power
distribution unit.
Is the power distribution unit power LED on?
NO Go to “Step 1521-14” on page 95.
YES Go to “Step 1521-11”.
Step 1521-11
Note: Read the Danger and Caution notices under “Safety Notices” on page xi before
continuing with this procedure.
Perform the following:
1. Disconnect the ac power cable(s) from the power distribution unit that supplies
power to the primary I/O drawer.
2. Use a multimeter to measure the ac voltage at the power distribution unit socket(s)
where the ac power cable(s), just removed, was (were) attached.
Is the ac voltage from 200 V ac to 240 V ac?
NO Replace the power distribution unit.
This ends the procedure. Go to ″Map 0410: Repair Checkout″ in the
Diagnostics Information for Multiple Bus Systems
.
YES Go to “Step 1521-12” on page 94.
Chapter 3. Maintenance Analysis Procedures 93
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