TUPIP03

You were directed here because you may need to exchange a failing part.

The failing part was determined from one of the following:

Other problem isolation procedures
The Failing item column of the tape unit reference code table
Tape unit service guide

Note:

Occasionally, the system is available but not performing an alternate IPL (type D IPL). In this instance, any hardware failure of the tape unit I/O processor, or any device attached to it is not critical. With the exception of the loss of the affected devices, the system remains available.

If the system has logical partitions, perform this procedure from the logical partition that reported the problem (see Determining if the system has logical partitions).
Do you need to exchange a possible failing device?
- No: Do you need to exchange the tape unit I/O processor?
  - No: Continue with the next step.
  - Yes: Exchange the tape unit I/O processor (see Locating FRUs). When you have completed the remove and replace procedure, continue with the next step.
- Yes: Perform the following:
  - For an internal tape unit, go to Locating FRUs.
  - For an external tape unit, go to the remove and replace procedures in the device service information.
Are you working with a tape unit in the system unit or in an expansion unit?
- Yes: Is the system available, and can you enter commands on the command line?
  - No: Continue with the next step.
  - Yes: Go to step 9.
- No: Continue with the next step.
Display the selected IPL type.
Is the displayed IPL type D?
- No: Do you want to perform an alternate IPL (type D)?
  - No: Continue with the next step.
  - Yes: Go to step 6.
- Yes: Go to step 6.
Perform an IPL from disk by doing the following:
1. Power off the system (see Powering on and powering off).
2. Select IPL type A in manual mode.
3. Power on the system.
4. Go to step 8.
Place the first tape of the latest set of SAVSYS tapes or SAVSTG tapes, or the first Software Distribution tape in the alternate IPL tape drive. The tape drive automatically becomes ready for the IPL operation (this may take several minutes).
Perform an alternate IPL by doing the following:
1. Power off the system.
2. Select IPL type D in Manual mode.
3. Power on the system.
The IPL may take one or more hours to complete.
Does an unexpected reference code appear on the control panel, and is the System Attention light on?
- No: Does the IPL complete successfully?
  - Yes: Continue with the next step.
  - No: Perform problem analysis to continue analyzing the problem. This ends the procedure.
- Yes: Go to step 10.
Perform the following to test the tape unit:
1. Enter VFYTAP (the Verify Tape command) on the command line.
2. Follow the prompts on the Verify Tape displays, then return here and answer the following question.
Does the VFYTAP command end successfully?
- No: Continue with the next step.
- Yes: This ends the procedure.
Record the SRC.
Is the SRC the same one that sent you to this procedure?
- Yes: You cannot continue to analyze the problem. Use the original SRC and exchange the FRUs. Begin with the FRU which has the highest percent of probable failure (see the failing item list for this reference code). This ends the procedure.
- No: A different SRC occurred. Use the new SRC to correct the problem. This ends the procedure.