Step 1540-13
You were directed here because the defect seems to be related to the I/O system.
Select fast boot mode (select enable fast boot) on the System Power Control menu from the service
processor main menu.
Look at the rear of the CEC drawer and locate the JTAG cable (connected to the rear of the CEC drawer
connector position shown in Chapter 1).
Follow the JTAG cable back to the primary I/O drawer. Examine SPCN cable connections at J15 and J16.
These cables, if any, go to secondary I/O drawers.
Are any secondary I/O drawers attached to the system?
NO Did you perform “Step 1540-4” on page 113?
NO Go to “Step 1540-40” on page 133.
YES Go to “Step 1540-17” on page 121.
YES
Did you perform “Step 1540-4” on page 113?
NO Go to “Step 1540-14” on page 119.
YES
Go to “Step 1540-15” on page 120.
118 Service Guide
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