IBM 3270 Maintenance Manual page 134

2. Rerun the diagnostics (see page 3-200-55).
If you receive the same error code, *
replace another nine modules from a
different bank and run the diagnostics
again (see page 3-200-55). Repeat this
process until either the problem* is solved
or all the modules on the system board
have been replaced.
If you receive the same error code* after
all four banks have been changed:
a. Replace the system board.
b. Remove all the 64K modules from the
old system board and install them on
the new system board. See Section 5,
"Removal/Replacement and
Adjustments. "
c. Rerun the diagnostics (see page
3-200-55).
*
Note:
If you receive a new error code at any
time during the procedure go to page 3-200-1 and
follow the PIC again.
October 1984 3-200-9