IBM 6H0, Service Manual

Page: 136 / 561

Use the following table to locate, if possible, the checkpoint that sent you to minimum
configuration:
Checkpoint Checkpoint Checkpoint
91FF 94B2 9503
9380 94BB 9504
94B0 9501 9505
94B1 9502 9506
Did you find the error code or checkpoint that sent you here in the above tables
or did the action that sent you to MAP 1540 explicitly tell you to run the CEC
Drawer Minimum Configuration?
NO Go to “Step 1540-13” on page 122.
YES Go to “Step 1540-4.”
Step 1540-4
1. Turn off the power.
2. At the CEC drawer, disconnect the RIO cable at RIO port 0.
3. At the primary I/O drawer, disconnect the RIO cable at RIO port 0. The RIO cable
should be loose and can be removed from the system.
4. At the CEC drawer, disconnect the RIO cable at RIO port 1 and reconnect it to RIO
port 0.
5. Follow the RIO cable you have connected to RIO port 0 of the CEC drawer back to
an 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.
6. With only one RIO cable connected between the CEC drawer RIO port 0 and the
primary I/O drawer RIO port 0, power the system on to boot standalone diagnostics
from CD.
Is the
Please Define the System Console
screen displayed?
NO Reconnect the RIO cable that was removed in substep 3 above. Connect from
CEC drawer RIO port 1 to the I/O drawer RIO port 1 noted in substep 5 above.
Go to “Step 1540-5” on page 117.
YES The RIO cable you removed in substep 3 above is defective.Replace the RIO
cable. Connect from CEC drawer RIO port 1 to the I/O drawer RIO port 1
noted in substep 5 above. The last item replaced was defective. Return the
machine to the original configuration. Go to
″
MAP 410: Repair Checkout
″
in
the Diagnostics Information for Multiple Bus Systems .
116
Service Guide