1. Fiber contamination
Symptoms:
Alignment error messages.
High losses (>0.1 dB) in fusion tests.
Splices with visible bubbles on screen.
Diagnosis:
Inspect the fiber with a cleaning microscope.
Check for debris or dust in the cut area.
Solution:
Clean with 99% isopropyl alcohol and lint-free cloths.
Repeat the cutting and fusing process.
2. Worn or dirty electrodes.
Symptoms:
Unstable arc or visible sparking.
Error messages related to the electric arc.
Progressive increase in fusion losses.
Diagnosis:
Check the fusion counter in the maintenance menu.
Visually inspect the electrodes.
Solution:
Run automatic electrode cleaning.
Replace them every 3,000–5,000 fusions (according to the manufacturer).
3. Defective fiber cleave
Symptoms:
“Bad cleave” messages on screen.
Difficulty with automatic alignment.
Unusually high losses in new fibers.
Diagnosis:
Observe the cutting angle with a microscope.
Check for wear on the cutter blade.
Solution:
Calibrate the precision cutter.
Rotate or replace the blade according to usage hours.
4. Alignment Problems
Symptoms:
Off-center image on the monitor.
Failures in the auto-alignment process.
Splices with higher than normal losses.
Diagnosis:
Check cleanliness of V-guides and cameras.
Check if the equipment requires calibration (on-screen alert).
Solution:
Clean guides with a fiber brush or compressed air.
Run automatic calibration routine.
5. Adverse Environmental Conditions
Symptoms:
Instability in the electric arc in the field.
Intermittent error messages.
Failures in areas with wind, humidity, or extreme cold.
Diagnosis:
Check if the environmental conditions match the errors.
Inspect the shielding of the fusion area.
Solution:
Use a splicing tent or wind and dust cover.
Keep the fusion splicer within its operating range (generally -10°C to 50°C).
6. Defective or insufficient battery.
Symptoms:
The equipment shuts down during fusion.
The arc is interrupted due to lack of power.
Less than specified autonomy.
Diagnosis:
Check the battery charge status and cycles in the device menu.
Verify that the charger is delivering the correct voltage.
Solution:
Fully charge before field use.
Replace the battery when it loses more than 30% of its capacity.
Use a backup battery or external power source for extended work periods.
7. Outdated Software/Firmware
Symptoms:
Frequent errors with new fibers (G.657, NZDSF, etc.).
Limited fusion parameters.
Incompatibility messages on the screen.
Diagnosis:
Check the firmware version in the menu.
Compare it with the latest version available on the manufacturer's website.
Solution:
Update firmware using the official software.
Restart the fusion splicer and recalibrate after the update.
Recommended preventive maintenance procedure
: Before starting work: clean fibers, check the cleaver, and verify battery charge.
During operation: keep the fusion splicer protected from dust and moisture.
Every 500 splices: perform electrode cleaning and automatic calibration.
Every 3,000–5,000 splices: replace electrodes and cleaver blade.
Every 6 months: update firmware and check the overall condition of the equipment.
