Apple Performa 6400/180 - Manual (Page 216)

Additional Procedures Logic Board Reset - 8
Note:
This procedure
resets PRAM. Be sure to
check the computer’s time/
date and other system
parameter settings
following the procedure.
Note:
If this procedure
resolves the problem, claim
an adjustment on an SRO. If
not, replace defective
component and
do not
claim
the adjustment.