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Step 1540-35
1. Turn off the power.
2. Disconnect the I/O drawer AC power cables.
3. Replace the remaining parts (listed below) in this drawer, one at a time.
a. Secondary I/O drawer backplane
b. RIO adapter card
c. Secondary drawer I/O operator panel
d. Fan controller card
e. Power supply and redundant power supply (if present)
f. Power distribution card
4. Reconnect the I/O drawer AC power cables.
5. Turn power on.
6. Boot standalone diagnostics from CD.
7. If the Please Define System Console screen is displayed, follow directions to select
the system console.
8. Use the Display Configuration and Resource List to list all attached devices and
adapters (refer to the Diagnostics Information for Multiple Bus Systems if
necessary).
9. Check that all attached devices and adapters are listed.
Did the Please define the System Console screen display and are all attached
devices and adapters listed?
NO
YES
Step 1540-36
If the Please Define System Console screen is displayed and all attached devices and
adapters are listed, do the following:
1. Turn off the power.
2. The item just replaced fixed the problem.
3. Plug in all adapters that were previously removed but not installed.
4. Reconnect the secondary I/O drawer ac cables that were previously disconnected.
Ensure the circuit breakers are set to the On position.
Reconfigure the system to its original condition. Go "Map 0410: Repair Checkout" in the
Diagnostics Information for Multiple Bus Systems .
Reinstall the next part in the list and return to the beginning of this step.
Continue repeating this process until a part causes the boot to be successful.
If you have replaced all the items listed above and the boot is not successful,
check any external devices and cabling. If you do not find a problem, contact
your next level of support for assistance.
Go to "Step 1540-36".
Chapter 3. Maintenance Analysis Procedures
135
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