Honeywell MT13-520 Manual page 46

A
-1 F n
n=(0 thru 8),
(E) or (F) replace K2LCN
n=(9) or (A) replace K2LCN*
n=(-) or (C),
or (blank) replace K2LCN board; if error repeats, look for bus problems
n=(other) check and/or replace backplane or chassis assembly
Multinode Module Service A-8 9/95