Cannot Power On System Rack (No Error Code)
To correct the power-on problem, perform this procedure until the problem is corrected
and you can power on the system.
The following steps are for the system rack, unless other instructions are given.
1. Attempt to power on the system (see “Powering Off and Powering On the System”
on page 492).
Does the system power on?
Yes Go to step 12 of this procedure.
No Go to step 2 of this procedure.
2. Is the background light for the Data display on the operator panel on?
Note: The background light is a dim (yellow) light in the Data area on the control
panel.
Yes Go to step 8 of this procedure.
No Go to step 3 of this procedure.
3.
Note: Read the Danger and Caution notices under “Safety Notices” on page xiii
before continuing with this procedure.
Perform the following:
a. Disconnect the ac power cable from the customer’s ac power source.
b. Use a multimeter to measure the ac voltage at the customer’s ac power
source.
Note: There is one ac power cable for each system rack or I/O rack.
Disconnect all the ac power cables and measure the ac voltage at all ac
power outlets before answering the following question.
Is the ac voltage from 200 V ac to 240 V ac?
No Perform the following:
1) Inform the customer that the ac voltage at the ac power outlet is
not correct.
2) Reconnect the ac power cables to the power source when the ac
voltage at the power source is 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.
90 Service Guide
To Next Page
Loading...
Need help?
General