Dskunit; Eacode; Extremd; Extscsi - IBM iSeries Series Hardware Problem Analysis And Isolation

See the DSKTRY symbolic FRU in the Migrated Expansion Tower Problem Analysis, Repair and Parts
book for FRU isolation instructions.

DSKUNIT

For use by authorized service providers.
See symbolic FRU "DISKDRV" on page 331.

EACODE

For use by authorized service providers.
An error occurred in the error analysis Licensed Internal Code.
Ask your next level of support for assistance.

EXTREMD

For use by authorized service providers.
An external removable media storage device may be failing.
See symbolic FRU "CHECK" on page 319 for more information prior to removing or replacing any parts.
Return here if symbolic FRU CHECK does not reveal any problems.
Use the device type and refer to the appropriate service documentation for that device. This
documentation will help you determine the FRU part numbers and replacement procedures that you are to
use during this repair action. If you are unable to locate the documentation for your specific device, then
contact your next level of support for assistance.

EXTSCSI

For use by authorized service providers.
The external signal cable may be failing.
If more than one device is attached, they may have duplicate addresses. See the device documentation
for information on setting the device address.
Perform the following:
1. Find the IOA type:
a. Find the IOA location.
b. Use the location information of the IOA in the Service Action Log if it is available. If the location is
not available, find the address. See SRC Address Formats. Use the address to find the location.
See Locations and Addresses.
c. Find the IOA card in the system and read the type number of the card at that location.
2. Find the IOA type, the attached device, the cable length, and the cable part number in the following
list.
3. Verify that the part number in the list is the same as the part number on the cable.
4. For external devices that are not found in the following list, use the device type and refer to the
appropriate service documentation for that device. The service documentation for that device will help
you determine the FRU part numbers and replacement procedures you are to use during this repair
action. If you are unable to locate the documentation for your specific device, then contact your next
level of support for assistance.
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iSeries: iSeries Server 270, 800, 810, 820, 825, 830, 840, 870, 890, SB2, and SB3 Hardware Problem Analysis and
Isolation