Cannot Power On I/O Rack (No Error Code)
1. Power off the system (see “Powering Off and Powering On the System” on
page 492).
2. Starting from J15 or J16 on the system unit (refer to “System Rack Locations Rear”
on page 18 for location), go to the first I/O rack in the I/O rack interconnect cable
sequence on which the PDB Power On light is off.
3.
Note: Read the Danger and Caution notices under “Safety Notices” on page xiii
before continuing with this procedure.
Use a multimeter to measure the ac voltage at the customer’s ac power outlet.
Is the ac voltage from 200 V ac to 240 V ac?
No Inform the customer that the ac voltage at the power outlet is not correct.
This ends the procedure. Go to ″Map 0410: Repair Checkout″ in the
Diagnostic Information for Multiple Bus Systems.
Yes Go to step 4 of this procedure.
4. Is the ac power cable from the I/O rack PDB to the customer’s ac power outlet
connected and seated correctly at both ends?
No Connect the ac power cables correctly at both ends.
This ends the procedure. Go to ″Map 0410: Repair Checkout″ in the
Diagnostic Information for Multiple Bus Systems.
Yes Go to step 5 of this procedure.
Chapter 3. Maintenance Analysis Procedures 95
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