Does the IPL complete successfully?
No
Yes
↓
The problem has been corrected.
This ends the procedure.
8.
Obtain another copy of the tape. Repeat steps 6 and 7 using the new tape. If
this does not correct the problem, continue with step 9.
9.
Look at the 4 rightmost characters of the Data display for word 1. These 4
characters are the unit reference code.
10.
If the 3490 indicator panel shows a check (CHK) code or an error code, see the
“Start” section of the 3490 service information.
11.
See “SRC Address Formats” on page 936 to determine the IOP, IOA, and
device address.
12.
Find the unit reference code in the following table.
13.
See the “Start” section of the 3490 service information.
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
0xxx, 1xxx,
2000
Tape unit failure
Use online problem analysis and the 3490 Tape Unit
service information to analyze the problem.
2001
Tape path dirty or write data check error
Clean the tape path using the cleaning procedures in the
3490 Magnetic Tape Subsystem Operator’s Guide
, GA32-0124.
Use the 3490 Tape Unit service information to continue
analyzing the problem.
MHK0001
DHK0002
2003
Tape path dirty or write identification record error
Clean the tape path using the cleaning procedures in the
3490 Magnetic Tape Subsystem Operator’s Guide
, GA32-0124.
Use the 3490 Tape Unit service information to continue
analyzing the problem.
MHK0001
DHK0002
2008
Tape path dirty or read data check error
Clean the tape path using the cleaning procedures in the
3490 Magnetic Tape Subsystem Operator’s Guide
, GA32-0124.
Use the 3490 Tape Unit service information to continue
analyzing the problem.
MHK0001
DHK0002
3490
Chapter 2. Unit Reference Codes
135
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