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Step 1540-11
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 RIO cable connected to port 1. Refer
to "CEC Drawer Rear View" on page 11 for location of RIO connectors.
Follow the RIO cable back to the secondary I/O drawer.
Is the secondary I/O drawer attached to the CEC drawer ?
NO
YES
Step 1540-12
The secondary I/O Drawer is attached to the CEC drawer. Isolate a faulty RIO cable by
performing the following steps:
Note: Before continuing, check the cabling from the CEC drawer to I/O Drawer(s) to
1. Turn the system power off.
2. At the CEC drawer, disconnect the cable connection at RIO port 0.
3. At the primary I/O drawer, disconnect the cable connection at RIO port 0. The RIO
4. At the CEC drawer, disconnect the cable connection at RIO port 1 and reconnect
5. Follow the RIO cable you have connected to RIO port 0 of the CEC drawer back
6. Verify that primary I/O drawer RIO port 0 is connected to the CEC drawer RIO port
7. Turn on the power to boot standalone diagnostics from CD.
8. If the Please Define System Console screen is displayed, follow directions to
Did you perform "Step 1540-4" on page 116?
NO Go to "Step 1540-37" on page 136.
YES Go to "Step 1540-15" on page 124.
Did you perform "Step 1540-4" on page 116?
NO Go to "Step 1540-12."
YES Go to "Step 1540-13" on page 122.
ensure that the system is cabled correctly. Refer to "Cabling the CEC Drawer,
Primary I/O Drawer, and Secondary I/O Drawer" on page 48 for valid
configurations. Record the current cabling configuration and then continue with
the following steps.
cable that was connected to RIO port 0 should now be loose and can be removed.
to RIO port 0.
to the secondary I/O drawer, disconnect the I/O drawer end (RIO port 1, note
location) of the RIO cable and reconnect it to the primary I/O drawer RIO port 0.
0.
select the system console.
Chapter 3. Maintenance Analysis Procedures
121
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