Oki ES 1624n MFP - Manual (Page 126)

Troubleshooting • 126
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 local
service dealer.
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 also.
Message Meaning What to Do