M90 Fusion Splicer 7-22 Operating Instructions
Troubleshooting and Care/Maintenance Issue 02/97
Other faults
The following table sets out explanations for eliminating faults which do not generate
fault messages on the monitor.
Fault Symptom Possible Cause Fault Locating Remedy
Battery mode not
possible; AC
mode function-
ing.
The battery is
missing, is not
connected or the
battery fuse is
faulty.
Check that the battery
has been fitted cor-
rectly and that the bat-
tery fuse is o.k.
Install and correctly
connect the battery
and/or change the fuse.
If the fault is repeated,
the splicer must be sent
to the service center for
examination.
Arc flickers or
hisses.
Electrodes dirty
or worn.
Clean or exchange
electrodes.
The fiber does
not melt during
fusion but buck-
les instead.
Fusion current
too low.
The splice point barely
lights up during splic-
ing.
Set correct fusion cur-
rent. Correct altitude
information or activate
altitude correction.
Fusion generator
is faulty.
The arc is not burning. Service center.
The fiber buckles
at the start of the
fusion process.
When automatic
fusion time con-
trol is used, a
more or less
usable splice is
obtained after a
long fusion time.
If the fusion time
is fixed, high
attenuation levels
are obtained.
The prefusion
time is too short
or the prefusion
current too low.
Correct the prefusion
parameter. You can
use the default parame-
ter as a basis.
Fusion process is
usually aborted
after less than
1 s (e.g. 0.6 s) if
automatic fusion
time control is
used, poor
splice, high at-
tenuation.
The minimum
fusion time is too
short. As a result
the automatic
fusion time con-
trol terminates
fusion before a
homogeneous
joint has formed.
The fiber shows irregu-
larities at the fusion
point when displayed
on the monitor. The
splice breaks easily
when removed.
Good results can be
achieved through
"Repeat fusion".
In most cases, you can
still 'rescue' unsuccess-
ful splices by fuse again
(see section 6, Fusion).
To prevent the faults
occurring in the first
place, increase the
minimum fusion time to
0.8 s - 1 s.
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