IBM pSeries 670 Service Manual page 296

Step 1542-26
1. Turn off the power.
2. At the secondary I/O book disconnect the cable connection at RIO port A0 (U1.18-P1-H3/Q4).
3. Disconnect the cable connection at I/O subsystem 5 left I/O port connector 0 (U2.1-P1/Q2).The RIO
cable that was connected to RIO port A0 should now be loose and can be removed.
4. At the secondary I/O book, disconnect the cable connection at RIO port A1 (U1.18-P1-H3/Q3) and
reconnect it to RIO port A0 (U1.18-P1-H3/Q4).
5. Disconnect the cable connection at I/O subsystem 5 right I/O port connector 1 (U2.1-P2/Q1) and
reconnect it to I/O subsystem 5 left I/O port connector 0 (U2.1-P1/Q2).
6. Verify that processor subsystem RIO port A0 on secondary I/O book (U1.18-P1-H3/Q4) is connected
to I/O subsystem 5 left I/O port connector 0 (U2.1-P1/Q2).
7. Verify that I/O subsystem 5 left I/O port connector 1 (U2.1-P1/Q1) is connected to I/O subsystem 5
right I/O port connector 0 (U2.1-P2/Q2).
8. Turn on the power to boot standalone diagnostics from CD.
9. If the Please define the System Console screen is displayed, follow directions to select the system
console.
10. Use the Display Configuration and Resource List to list all attached devices and adapters (refer to the
RS/6000 and Eserver pSeries Diagnostic Information for Multiple Bus Systems, order number
SA38-0509, if necessary).
11. 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 Connect the previously removed RIO cable from I/O subsystem 5 right I/O port connector 1
(U2.1-P2/Q1) to processor subsystem RIO port A1 on secondary I/O book (U1.18-P1-H3/Q3). Go
to "Step 1542-9" on page 267.
YES The RIO cable that was removed in step 3 is defective. Replace the RIO cable. Connect the new
RIO cable from I/O subsystem 5 right I/O port connector 1 (U2.1-P2/Q1) to processor subsystem
RIO port A1 on secondary I/O book (U1.18-P1-H3/Q3). Reconfigure the system to its original
condition. Go to "MAP 0410: Repair Checkout" in the RS/6000 and Eserver pSeries Diagnostic
Information for Multiple Bus Systems.
276 Eserver pSeries 670 Service Guide