1. Verify that the 9348 Tape Unit is powered on.
2. Verify that the interface cable connections are correct for each 9348 Tape Unit.
3. Clean the tape path as described in the 9348 Tape Unit Service Information
4. Load the first tape.
5. Start a type D IPL from the system unit control panel.
Does the IPL complete successfully?
No Yes
↓ The problem has been corrected.
This ends the procedure.
6. Obtain another copy of the tape. Repeat steps 4 and 5 using the new tape. If
this does not correct the problem, continue with step 7.
7. Look at the 4 rightmost characters of the Data display for word 1. These 4
characters are the unit reference code.
8. If the tape unit indicator panel shows an error condition, see the 9348 Tape Unit
Service Information and find the unit reference code.
(9427) Tape Unit Reference Codes
The tape library detected a failure.
1. Look at the 4 rightmost characters of the Data display for word 1. These 4
characters are the unit reference code.
2. Find the unit reference code in the following table.
Notes:
1. If the failing item is a failing item (FI) code, go to “Failing Items” on page 479
to determine which part number associated with the FI code is failing.
2. If the failing item is a type number, go to “Type, Model, and Part Number list”
on page 885 to determine the part number.
3. If the failing item is a symbolic FRU, go to “Symbolic FRUs” on page 495 to
determine the part number.
Reference
Code
Description/Action Perform all actions before exchanging
Failing Items
Failing Item
0001 Tape unit failure
Refer to the 9427 8mm Tape Cartridge Library Service
Guide.
9348
Chapter 2. Unit Reference Codes 173
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