IOPIP25

Use this procedure to isolate the problem when a device attached to the I/O card has functions that are not given support on the I/O card.

1. If the system has logical partitions, perform this procedure from the logical partition that reported the problem. To determine if the system has logical partitions, go to Determining if the system has logical partitions, before continuing with this procedure.
2. Have any other I/O card or device SRCs occurred at about the same time as this error?
   • Yes: Use the other I/O card or device SRCs to correct the problem. See the system reference codes. This ends the procedure.
   • No: Has the I/O card, or have the devices been repaired or reconfigured recently?
     • Yes: Continue with the next step.
     • No: Contact your next level of support for assistance. This ends the procedure.
3. Access SST/DST by doing one of the following:
   • If you can enter a command at the console, access system service tools (SST). System service tools .
   • If you cannot enter a command at the console, perform an IPL to DST. See Performing an IPL to dedicated service tools .
   • If you cannot perform a type A or B IPL, perform a type D IPL from removable media.
4. Did you perform a D IPL to get to DST?
   • No: Access the Product Activity Log and display the SRC that sent you here. Press the F9 key for address information. This is the I/O card address. Then, view the "Additional Information" to record the formatted log information. Record the addresses that are not 0000 0000 for all devices listed.

     Continue with the next step.

   • Yes: Access the Product Activity Log and display the SRC that sent you here. The direct select address (DSA) of the I/O Card is in the format BBBB-Cc-bb:
     • BBBB = hexadecimal offsets 4C and 4D
     • Cc = hexadecimal offset 51
     • bb = hexadecimal offset 4F

       The unit address of the I/O card is hexadecimal offset 18C through 18F.

     A formatted display of hexadecimal information for Product Activity Log entries is not available. In order to interpret the hexadecimal information, see More information from hexadecimal reports . Record the addresses that are not 0000 0000 for all devices listed. Continue with the next step.

5. See System FRU locations and find the diagram of the system unit, or the expansion unit. Then find the following:
   • The card slot that is identified by the I/O card direct select address (DSA) and unit address. If there is no IOA with a matching DSA and unit address, the IOP and IOA are one card. Use the IOP with the same DSA.
   • The disk unit locations that are identified by the unit addresses.
   Have you determined the location of the I/O card and the devices that are causing the problem?

   • No: Ask your next level of support for assistance. This ends the procedure.
   • Yes: Have one or more devices been moved to this I/O card from another I/O card?
     • Yes: Continue with the next step.
     • No: Ask your next level of support for assistance. This ends the procedure.
6. Is the I/O card capable of supporting the devices attached, or is it in the correct mode to support the devices attached?
   Note: For information on I/O card modes, see Storage I/O card modes and jumpers.
   • No: Remove the devices from the I/O card.
     Note: You can remove disk units without installing another disk unit, and the system continues to operate.
     This ends the procedure.
   • Yes: Do you want to continue using these devices with this I/O card?
     • Yes: Continue with the next step.
   • No: Either change the I/O card mode or remove the devices from the I/O card. This ends the procedure.
7. Initialize and format the disk units by performing the following steps:
   Attention: Data on the disk unit will be lost.
   1. Access SST or DST.
   2. Select Work with disk units.
      Did you get to DST with a Type D IPL?

      • Yes: Continue with the next step.
      • No: Select Work with disk unit recovery > Disk unit problem recovery procedures. Then continue with the next step.
   3. Select Initialize and format disk unit for each disk unit. When the new disk unit is initialized and formatted, the display shows that the status is complete. This may take 30 minutes or longer. The disk unit is now ready to be added to the system configuration. This ends the procedure.