IOPIP16

Use this procedure to isolate failing devices that are identified by FI codes FI01105, FI01106, and FI01107.

During this procedure, you will remove devices that are identified by the FI code, and then you will perform an IPL to determine if the symptoms of the failure have disappeared, or changed. You should not remove the load-source disk until you have shown that the other devices are not failing. Removing the load-source disk can change the symptom of failure, although it is not the failing unit.

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.
Use the Hardware Service Manager (HSM) verify function (use DST or SST), and verify that all tape and optical units attached to the SCSI bus (identified by FI01105, FI01106, or FI01107) are operating correctly. See Verifying a repair for details.
Note:

Do not IPL the system to get to DST.
Choose from the following options:
- If verification was successful for all tape and optical units, then go to step 5.
- If any tape or optical device could not be verified, or if it failed verification, then exchange the failing item. See the Locating FRUs and continue with the next step.
Use the Hardware Service Manager (HSM) verify function (use SST or DST) and verify that the exchanged item is operating correctly. See Verifying a repair for details.
Was the verification successful?
- No: Replace the exchanged device with the original. See Locating FRUs and continue with the next step.
- Yes: The newly exchanged tape or optical device was the failing item. This ends the procedure.
Perform an IPL to DST. See Performing an IPL to DST.
Does an SRC appear on the control panel?
- No: Continue with the next step.
- Yes: Go to step 8.
Does one of the following displays appear on the console?
- Disk Configuration Error Report
- Disk Configuration Attention Report
- Disk Configuration Warning Report
- Display Unknown Mirrored Load-Source Status
- Display Load-Source Failure
  Note:
  
  On some of these displays, you must press F11 to display reference codes. The characters under Type are the same as the 4 leftmost characters of word 1. The characters under Reference Code are the same as the 4 rightmost characters of word 1.
  - No: Continue with the next step.
  - Yes: Are all of the reference codes 0000?
    - No: Go to step 8, and use the reference code that is not 0000.
    - Yes: Go to LICIP11 and use cause code 0002. This ends the procedure.
Look at the Product Activity Log. See Using the product activity log for details.
Is a reference code logged as a result of this IPL?
- Yes: Continue with the next step.
- No: You cannot continue isolating the problem. Use the original reference code and exchange the failing items, starting with the highest probable cause of failure. If the failing item list contains FI codes, see Locating FRUs for additional details. This ends the procedure.
Is the SRC or reference code the same one that sent you to this procedure?
- Yes: Continue with the next step.
- No: Record the SRC or reference code. Then, use the SRC or reference code to correct the problem. This ends the procedure.
Isolate the failing device by doing the following:
1. Power off the system or the expansion unit if it is powered on. See Powering on and powering off.
2. Go to Locating FRUs to find the devices identified by FI code FI01105, FI01106, or FI01107 in the failing item list.
3. Disconnect one of the devices that are identified by the FI code, other than the load-source disk unit.
  Note:
  
  The tape, or optical units should be the first devices to be disconnected, if they are attached to the SCSI bus identified by FI01105, FI01106, or FI01107.
4. Go to step 11.
Continue to isolate the possible failing items by doing the following:
1. Power off the system or the expansion unit. See Powering on and powering off.
2. Disconnect the next device that is identified by FI codes FI01105, FI01106, or FI01107 in the FRU list. See the note in step 9. Do not disconnect disk unit 1 (load-source disk) until you have disconnected all other devices and the load-source disk is the last device that is identified by these FI codes.
Power on the system or the expansion tower.
Does an SRC appear on the control panel?
- No: Continue with the next step.
- Yes: Go to step 14.
Does one of the following displays appear on the console?
- Disk Configuration Error Report
- Disk Configuration Attention Report
- Disk Configuration Warning Report
- Display Unknown Mirrored Load-Source Status
- Display Load-Source Failure
  Note:
  
  On some of these displays, you must press F11 to display reference codes. The characters under Type are the same as the 4 leftmost characters of word 1. The characters under Reference Code are the same as the 4 rightmost characters of word 1.
  - Yes: Go to step 14.
  - No: Look at the Product Activity Log. See Using the product activity log for details. Is a reference code logged as a result of this IPL?
    - No: Continue with the next step.
    - Yes: Go to step 14.
You are here because the IPL completed successfully. The last device you disconnected is the failing item.
Is the failing item a disk unit?
- No: Exchange the failing item and reconnect the devices you disconnected previously. See the Locating FRUs. This ends the procedure.
- Yes: Exchange the failing FRU. Before exchanging a disk drive, you should attempt to save customer data. This ends the procedure.
Is the SRC or reference code the same one that sent you to this procedure?
- Yes: Continue with the next step.
- No: Record the SRC or reference code on the Problem summary form. Then go to step 16.
The last device you disconnected is not failing.
Have you disconnected all the devices that are identified by FI codes FI01105, FI01106, or FI01107 in the FRU list?
- No: Leave the device disconnected and return to step 10 to continue isolating the possible failing items.
- Yes: Replace the device backplane or backplanes associated with the devices you removed in the earlier steps. If the device backplane does not fix the problem, then you cannot continue isolating the problem. Use the original SRC and exchange the failing items, starting with the highest probable cause of failure. If the failing item list contains FI codes, see Locating FRUs for additional information. This ends the procedure.
Is the SRC B1xx 4504, and have you disconnected the load-source disk unit? (The load-source disk unit is disconnected by disconnecting disk unit 1.)
- Yes: Continue with the next step.
- No: Does one of the following displays appear on the console, and are all reference codes 0000?
  - Disk Configuration Error Report
  - Disk Configuration Attention Report
  - Disk Configuration Warning Report
  - Display Unknown Mirrored Load-Source Status
  - Display Load-Source Failure
    Note:
    
    On some of these displays, you must press F11 to display reference codes. The characters under Type are the same as the 4 leftmost characters of word 1. The characters under Reference Code are the same as the 4 rightmost characters of word 1.
    - Yes: Continue with the next step.
    - No: A new SRC or reference code occurred. Perform problem analysis and correct the problem. This ends the procedure.
The last device you disconnected may be the failing item. Exchange the last device you disconnected. See the Locating FRUs.
Note:

Before exchanging a disk drive, you should attempt to save customer data.

Was the problem corrected by exchanging the last device you disconnected?
- No: Continue with the next step.
- Yes: This ends the procedure.
Reconnect the devices you disconnected previously in this procedure.
Use the original SRC and exchange the failing items, starting with the highest probable cause of failure. Do not exchange the FRU that you exchanged in this procedure. If the failing item list contains FI codes, see Locating FRUs to help determine part numbers and location in the system. This ends the procedure.