9. 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).
10. 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 Go to “Step 1540-13”
YES The RIO cable that was removed in substep 3 above is defective. Replace the
RIO cable. Connect the new RIO cable from CEC drawer RIO port 1 to the
secondary I/O drawer RIO port 1 noted in substep 5 above. Reconfigure the
system to its original condition. Go to ″MAP 410: Repair Checkout″ in the
Diagnostics Information for Multiple Bus Systems
Step 1540-13
Isolate the primary I/O drawer by performing the following steps:
1. Turn off the system power.
2. Select fast boot mode (select enable fast boot) on the system power control menu
from the service processor main menu.
3. Verify that primary I/O drawer RIO port 0 is connected to CEC drawer RIO port 0.
4. At the primary I/O drawer, remove the cable connected to RIO port 1.
5. Verify that the primary I/O drawer V/S COMM and JTAG ports are connected to the
CEC V/S COMM and JTAG ports.
Note: The primary I/O drawer should be cabled as shown in “Cabling the CEC
Drawer, Primary I/O Drawer, and Secondary I/O Drawer” on page 48. Be sure
to examine all the RIO, V/S COMM, and JTAG cables.
6. Disconnect ac power cables from the secondary I/O drawer.
Attention: The rack that you are working on may have I/O drawers that are
connected to other CEC drawers or other third-party drawers attached to the power
distribution unit (PDU). To avoid removing power from drawers that are used by
other systems, when you are instructed to unplug power from an I/O drawer,
remove only the PDU side of the single ac cables connected to the I/O drawer in
question.
7. All I/O drawers except the primary I/O drawer should now be physically
disconnected from the CEC drawer.
Go to “Step 1540-14” on page 123.
122 Service Guide
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