Operating Instructions 7-15 M90 Fusion Splicer
Issue 02/97 Troubleshooting and Care/Maintenance
Fault Message
Fault Symptom
Possible Cause Fault Locating Remedy
Fault messages
during fiber
search and posi-
tioning
Fiber offset
excessive
(LID or video
system)
The fiber offset
before position-
ing is larger than
half the fiber
diameter
Coating stripping
edge wrongly
positioned or
fiber not located
correctly in
guide.
Check whether the
fiber is clean and
positioned correctly
in the guide.
Only 250/900 µm fiber
guide: The coating strip-
ping edge must lie inside
the mark at the end of the
fiber guide as described in
section "Preparing the
splice". In the case of
doubt, it is better that the
coating projects out of the
guide rather than the
stripping edge lies inside
the guide.
Fiber guides dirty
or damaged.
Clean the guides. Use
alcohol as solvent if nec-
essary. Exchange dam-
aged guides.
Wrong fiber
guide or wrong
cleave length.
Use the correct guide for
the fiber in question and
observe the prescribed
cleave length.
Dirt under the
fiber guides.
Remove the fiber guides,
clean them from below as
well and remove dirt from
the receiving channel in
the guides.
Positioning sys-
tem not aligned
properly.
Check the fiber po-
sition using clean
900-µm guides.
Only if the fault is
then repeated must
the positioning sys-
tem be realigned. (Is
very seldom the
case.)
Perform basic alignment of
the X/Y axis as described
below. Even if the splicer
functions correctly after-
wards, you should still
send it for examination to
the service center at the
earliest opportunity.
Fiber dirty or
damaged
The video sys-
tem has detected
that the total end
face angle ex-
ceeds 2.3° or
that the end face
is dirty.
Determine on the
monitor which fiber
end is at fault.
Prepare fibers again.
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