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8
Messages
Overview of possible malfunctions
102
Operating instructions DTCO 4.0 - Edition 11.2018 - A2C19916900
■ Overview of possible
malfunctions
Message
Possible cause
Measure
x Device faults
Serious fault in the DTCO 4.0, subsequent causes can be
possible:
Unexpected program or process time error.
Confirm message.
Button elements blocked or pressed simultaneously for
some time.
Check proper function of the button ele-
ments.
Communication fault with external devices.
Get connecting cables or function of the
external devices checked by an author-
ised specialist workshop.
Communication fault with the instrument display.
Get connecting cables or function of the
display instrument checked by an au-
thorised specialist workshop.
Fault at pulse output.
Get connecting cables or function of the
connected control device checked by an
authorised specialist workshop.
x1 Device fault
Fault in the card mechanics, e.g. card lock is not closed.
Remove tachograph card and insert it
again.
x Time fault
UTC time of the DTCO 4.0 is not plausible or does not run
properly. To avoid an inconsistency of the data, newly in-
serted driver/company cards are not accepted.
Confirm message.
Service Only!