Mode Jumper Is Missing; System Reference Codes (Src) Address Formats - IBM iSeries 270 Service Manual

v If the mode jumper is in the desired position and no other I/O card or device system reference
codes (SRCs) occurred at about the same time as this error, then power the system down normally
and IPL. See Power on/off the system and logical partitions.
This ends the procedure.
Mode jumper is missing: For use by authorized service providers.
The error message CPPEA21 appears when the mode jumper is missing from the storage I/O card.
1. Locate the jumper.
2. Power off the system. See Power on/off the system and logical partitions.
3. Install the jumper in the correct position. See Set or change the mode of an I/O card.
4. Power on the system.
This ends the procedure.

System reference codes (SRC) address formats

For use by authorized service providers.
Use this procedure to determine the IOP, IOA, or device address from either a control panel or a console
display.
Note: If the IOP, IOA, or device is located in a migrated tower, see SRC address formats in the Migrated
Expansion Tower Problem Analysis, Repair and Parts manual on the V5R1 Supplemental Manuals web
site
.
1. Was the SRC and addressing information obtained either from a control panel display or the Main
Storage Dump Manager display?
No: Continue with the next step.
v
Yes: Addressing information is in the Bus-Bus-Bus-Bus/Card-card/board-board (BBBBCcbb) format
v
as follows:
– If characters 7 and 8 of the top 16-character line of function 12 (word two) are 60:
- The IOP address is characters 1-8 of the bottom 16-character line of function 12 (word four)
in the format "BBBBCcbb".
- The device address is characters 9-16 of the bottom 16-character line of function 12 (word
five) in the format "abcd efgh".
– If characters 7 and 8 of the top 16-character line of function 12 (word two) are 13, 17, 27, or
29:
- The IOP address is characters 9-16 of the top 16-character line of function 12 (word three)
in the format "BBBBCcbb".
- The device address is characters 1-8 of the bottom 16-character line of function 12 (word
four) in the format "abcd efgh".
– If characters 7 and 8 of the top 16-character line of function 12 (word two) are 62:
- The IOP address may be characters 9-16 of the top 16-character line of function 13 (word
seven) in the format "BBBBCcbb".
- The device address may be characters 1-8 of the top 16-character line of function 13 (word
six) in the format "abcd efgh".
Go to step 8 (See page 575).
2. Are you using the Service Action Log?
No: Continue with the next step.
v
Analyze hardware problems
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