Failing Item
Description
Document Description
SVCDOCS
Customer engineer directed to system problem
analysis
Problem Analysis; Symbolic FRU Isolation
(3490) Tape Unit Reference Codes
A tape or a 3490 Tape Unit failure occurred.
Note:
For tape device and IOP reset procedures, see TU-PIP4.
1.
Is the operating system available and can you enter commands from the
command line?
v
Yes
: Is OS/400 available on the system (see “Determining the Dominant
Operating System” in the
iSeries Service Functions
)?
–
No
: Continue with the next step.
–
Yes
: Use the online problem analysis procedures to isolate the problem.
Use the Work with Problem (
WRKPRB
) command to determine if a
recent problem was entered in the problem log, or use the Verify Tape
(
VFYTAP
) command to run verification tests.
v
No
: Continue with the next step.
2.
Verify that the 3490 is powered on.
3.
Verify that the channel Enable/Disable switches are set to the Enable position.
4.
Verify that the 3490 online/offline switches are set to the online position.
5.
Load the first tape.
6.
Start a type
D
IPL from the system unit control panel.
Does the IPL complete successfully?
v
Yes
: The problem has been corrected.
This ends the procedure.
v
No
: Obtain another copy of the tape. Repeat steps 5 and 6 using the new
tape. If this does not correct the problem, continue with the next step.
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 3490 indicator panel shows a check (CHK) code or an error code, see the
“Start” section of the 3490 service information.
9.
See SRC Address Formats to determine the IOP, IOA, and device address.
10.
Find the unit reference code in the following table.
11.
See the “Start” section of the 3490 service information.
For more on the Failing Item column entries, see Table 2. Tape Unit Failing Items
Details, which follows the reference code table below.
Table 1. (3490) Tape Unit Reference Codes
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.
283C, 283D, 283F, 28B9, 28BC, 5306
System Reference Codes
157