IBM 6H0, Service Manual

Page: 99 / 561

Symptom Action
You have an 8-digit error code of the form 10n1
xxxx and two or more drawers have the same
drawer number.
Shut down the system and remove all but one
of the drawers with duplicate drawer numbers.
Refer to the steps in “MAP 1540: Minimum
Configuration” on page 113 for a procedure to
connect/reconnect I/O drawers. Attempt to
reboot the system.
1. If the system fails, you have found the
failing drawer. Substitute 2 for n when
looking up the error code in “Checkpoint
and Error Code Index” on page 165.
2. If the system boots, shut down and add
another of the detached drawers back into
the system. Repeat steps one and two until
the failing drawer is isolated.
Note: As the system successfully boots,
duplicate drawer numbers are resolved into
unique drawer numbers.
The system stops with an 8-digit error code
displayed when booting.
Go to “Checkpoint and Error Code Index” on
page 165.
An Error Indication in the Secondary I/O Drawer Operator Panel Display
A bouncing or scrolling ball remains on the
secondary I/O drawer operator panel display or
the secondary I/O drawer operator panel
display is filled with dashes.
Replace the following, one at a time:
1. Secondary I/O drawer backplane
Location: U0.2-P1
2. Secondary I/O drawer operator panel
assembly
Location: U0.2-L1
You have an 8-digit error code in the form 10n1
xxxx.
This is the failing drawer. If n is greater than the
number of I/O drawers in the system, substitute
2 for n when looking up the error code in
“Checkpoint and Error Code Index” on page
165.
System Stops With a 4-Digit Number That Does Not Begin With 0 or 2 Displayed
Chapter 3. Maintenance Analysis Procedures
79