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Troubleshooting • 125
YYYY
nnn: FATAL ERROR
An error has
occurred which
requires service.
YYYY = the general
cause. nnn = error
number.
Write down the
message including the
error number “nnn,”
then call your
authorized Oki Data
Service Dealer for
service.
Note: If you see a
series of octets
containing letters and
numbers scrolling
across the display, be
sure to write these
down also and report
them to the Service
Dealer.
Message Meaning What to Do