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Step 1542-5
Examine the base system RIO port 0 of RIO connector card 1 (U0.1-P1-H1/Q1).
Are there any I/O subsystems attached to the base system?
No
Go to "Step 1542-32" on page 167.
Yes
Go to "Step 1542-6."
Step 1542-6
There may be missing devices associated with one or more I/O subsystems.
Attention:
The 7311 Model D10 I/O Subsystem and the 7311 Model D20 I/O Subsystem may both be
connected to the pSeries 650. However, both models cannot be looped on the same processor subsystem
RIO ports. The remaining steps in this MAP refer to I/O subsystem RIO port connector 0 and RIO port
connector 1. The MAP location codes of these ports are for the 7311 Model D10 I/O Subsystem. The
location codes of these ports are different for the 7311 Model D20 I/O Subsystem. The 7311 Model D10
I/O Subsystem is a half-wide drawer and the MAP refers to left and right side subsystems. The 7311
Model D20 I/O Subsystem is full width. Therefore left and right does not apply to the 7311 Model D20 I/O
Subsystem. Refer to the table below to determine the RIO port location codes and the rack position to use
in the MAP for the 7311 Model D20 I/O Subsystem.
I/O subsystem RIO port 0
I/O subsystem RIO port 1
Valid rack locations for this MAP
Note: Before continuing, check the cabling from the base system to the I/O subsystem(s) to ensure that
the system is cabled correctly. Refer to "Subsystem Positioning and Cabling" on page 11 for valid
configurations. Record the current cabling configuration and then continue with the following steps:
1. Turn off the power.
2.
At the base system, disconnect the cable connection at RIO port 0 of RIO connector card 1
(U0.1-P1-H1/Q1).
3. If the RIO cable in substep 2 is connected to the right side I/O subsystem, disconnect the right side
I/O subsystem port connector 0 (U0.x-P1.1/Q1). The RIO cable that was connected to RIO port 0 of
RIO connector card 1 in the base system should now be loose and can be removed. Record the
location of this I/O subsystem and that it is "not looped right." Go to substep 5.
4. If the RIO cable in substep 2 is connected to the left side I/O subsystem, disconnect the left side I/O
subsystem port connector 0 (U0.x-P1.1/Q1). The RIO cable that was connected to RIO port 0 of RIO
connector card 1 in the base system should now be loose and can be removed. Record the location
of this I/O subsystem. Go to substep 8.
5. At the base system, disconnect the cable connection at RIO port 1 of RIO connector card 1
(U0.1-P1-H1/Q2), and reconnect it to RIO port 0 of RIO connector card 1 (U0.1-P1-H1/Q1).
6. At the I/O subsystem recorded in substep 3, disconnect the I/O port connector 1 (U0.x-P1.1/Q2) and
reconnect to the I/O port connector 0 (U0.x-P1.1/Q1).
7. Verify that a single RIO cable connects base system RIO port 0 of RIO connector card 1
(U0.1-P1-H1/Q1) to the I/O subsystem recorded in substep 3 port connector 0 (U0.x-P1.1/Q1). Go to
substep 27 on page 149.
8. Examine the connection at the I/O port connector 1 (U0.x-P1.1/Q2) of the I/O subsystem recorded in
substep 4. If the RIO cable attached to the I/O port connector 1 of the I/O subsystem connects to the
I/O port connector 0 of another I/O subsystem, record that the I/O subsystem identified in substep 4
7311 Model D10 I/O Subsystem
U0.x-P1.1/Q1
U0.x-P1.1/Q2
Left side
Right side
7311 Model D20 I/O Subsystem
U0.x-P1.1/Q2
U0.x-P1.1/Q1
Assume left side only
Chapter 3. Maintenance Analysis Procedures
147
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