Fiber optic instrument service

Fusion splicer repair & calibration

Independent repair and NIST-traceable calibration for fusion splicers: Fujikura, Sumitomo, Fitel, INNO, AFL, Ericsson and Corning. Current models and the discontinued ones the OEM won't touch. Free evaluation, flat-rate quote before any work, fast turnaround.

  • Free evaluation & diagnosis
  • Flat-rate quote up front
  • Cal certificate included
  • Ships worldwide

A fusion splicer is only as good as its last calibration. When splice loss starts creeping up, the arc turns unstable, a motor stalls, or the unit simply won't boot, the cost isn't just the repair. The crew stands idle and the job slips. Aumictech repairs and recalibrates fusion splicers in-house so you don't have to ship to multiple OEM depots or replace a unit that's worth saving.

We work on core-alignment, cladding-alignment, ribbon and polarization-maintaining splicers. Send the splicer with its cleaver, power cord and batteries; we evaluate the whole setup at no cost, send you a written diagnosis and a flat-rate price, and only proceed once you approve it.

Free evaluation

No-cost diagnosis and a flat-rate quote before any work. Decline and you cover only return shipping.

Fast turnaround

Diagnosed in 1–2 business days, returned within a few days once approved. Rush service available.

Board-level repair

Power, motor-driver, camera and LCD faults fixed to the component level, not by swapping parts.

Calibration included

Every unit is recalibrated and test-spliced against a known reference. Certificate ships with the unit.

Brands and models we repair

Both current and discontinued splicers. If your model is not listed, send the model number. We service more legacy units than most independent labs.

Fujikura / AFL

The most common splicers we receive. Core-alignment, cladding-alignment, ribbon and PM models from the FSM era through the current S-series.

Models: FSM-11S, FSM-12S, FSM-16S, FSM-17S, FSM-18S, FSM-30S, FSM-40S, FSM-40F, FSM-40PM, FSM-45PM, FSM-50S, FSM-60S, FSM-60R, FSM-62S, FSM-70S, FSM-70R, FSM-80S, FSM-87S, FSM-90S, FSM-100P, FSM-100P+, FSM-100M, 19S, 22S, 41S, 45S, 70S+, 70R+, 90S, 90S+, 90R, 90R+

Sumitomo

From legacy Type-3x/Type-6x units to the current Quantum series. We handle the older PAS core-alignment units other shops turn away.

Models: Type-25e, Type-25eM, Type-36, Type-37, Type-39, Type-41, Type-45, Type-46, Type-51, Type-62, Type-63, Type-65, Type-66, Type-71C, Type-71C+, Type-72C, Type-81C, Type-82C, Type-82C+, Quantum Q101, Q101-CA, Q102, Q102-CA, Z1C, Z2C

Fitel / Furukawa (OFS)

Ninja and S-series single and mass-fusion splicers. Camera, motor and cleaver issues are the usual reasons these arrive.

Models: S121, S122, S123, S153, S153A, S177, S178, S178A, S179, S183, S184, S185, Ninja NJ001, S326A cleaver

INNO Instrument

View and IFS families. Active core-alignment units that respond well to electrode, camera and firmware service.

Models: View 1, View 3, View 5, View 7, View 12, View 12R, View PRO, IFS-10, IFS-15, IFS-15H

Ericsson

FSU legacy splicers including PM/FA models. We support the older RS-232/Windows-controlled units and their calibration software.

Models: FSU-925, FSU-975, FSU-975FA, FSU-975PM, FSU-995, FSU-995FA, FSU-995PM

Corning / Other

Corning, Comway, Ilsintech, Jilong, Tekcn, Signal Fire and other field splicers. Send the model number and we will confirm.

Models: Corning OptiSplice, Comway C6/C8/C9/C10, Ilsintech Swift, Jilong KL-series, Tekcn TC-series, Signal Fire AI-series

Model-specific repair pages

Detailed repair information, common faults, and service specs for specific models.

Common fusion splicer problems and error messages

The faults we see most often across every brand. Exact wording differs between Fujikura, Sumitomo, Fitel and INNO, but the underlying causes and fixes are consistent.

Symptom / error Likely cause What our repair does
Alignment Error / fiber image off-center Dust or debris in the V-groove or on the fiber, contaminated clamp, or camera/illumination drift preventing proper centering. V-groove and clamp deep clean, illumination re-balance, camera focus and offset re-alignment, test splicing to confirm sub-0.02 dB results.
Fiber not found (left / right): "can't detect fiber" Fiber set too far across the V-groove, failed LED brightness, dirty objective lens or mirror, or a camera/optical-block fault. Optical-path inspection, lens and mirror cleaning, LED brightness calibration, camera/sensor diagnostics to the board, optical-block replacement if needed.
Arc / discharge problem: unstable arc, sizzling, sparking, bubbles Worn or contaminated electrodes (typically due around 1,000–5,000 arcs), incorrect arc power, or a high-voltage/arc-board fault. Electrode replacement and conditioning, arc-power recalibration, high-voltage board check, fresh arc-calibration until GOOD on single-mode fiber.
High splice loss / high estimated loss Drifted arc calibration, worn electrodes, contaminated V-groove, high cleave angle from cleaver, or alignment-motor wear. Full alignment recalibration, electrode service, cleaver inspection with cleave-angle measurement, motor re-zeroing, verified test splicing.
Motor error: Z, X, Y or focus motor fault Debris or dried lubricant in the motor track, worn drive gears, lost home position, or a motor-driver board fault. Motor track cleaning and re-lubrication, home-position recalibration, gear/belt replacement, driver-board repair or replacement.
Splicer won't power on / no boot / boot loop Failed battery or charging circuit, faulty DC jack or power board, corrupted firmware, or failed main board. Power-rail diagnosis, battery and charge-circuit service, DC-jack/power-board repair, firmware re-flash, main-board component-level repair.
Screen / LCD blank, cracked, or unresponsive touch Damaged LCD or touch digitizer, loose display ribbon cable, or a display-driver fault. LCD and touch-panel replacement, ribbon-cable reseating, display-driver testing, full functional check.
Heater / oven won't heat or over-heats sleeves Failed heater element, broken heater wiring, or a heater-control board fault. Heater element and wiring service, recalibration of shrink temperature and time, control-board repair.
"Too thin" / "too fat" splice geometry Arc power too high or too low, insufficient or excessive fiber overlap, or stripping length out of spec, usually from calibration drift. Arc-power and overlap recalibration, motor push/overlap re-zeroing, confirmed across SM, MM and your actual fiber types.
PM splicer rotational / axis error (FSM-40PM, 45PM, 100P, FSU-PM) Polarization-maintaining alignment drift, rotational stage wear, or stress-rod profile mis-detection. PM-axis rotational re-alignment, stress-rod profile recalibration, rotational-stage service, verified PM extinction-ratio test splicing.
Seeing an error not listed here, or a model-specific code like an E-code on a Fujikura, an alignment/arc message on a Sumitomo Type-71C, or a core-dirty warning on an INNO View? Send us the exact message and model number before you ship anything.

What's included in a fusion splicer service

  • Electrode replacement & conditioning: worn electrodes cause unstable arcs, sizzling, bubbles and rising splice loss. Replaced, conditioned, then arc power recalibrated.
  • Arc calibration: the single most common reason for high-loss splices. Recalibrated until single-mode test splices read GOOD.
  • V-groove & clamp cleaning: debris here throws off every splice. Deep-cleaned and inspected.
  • Alignment-motor service: X/Y/Z and focus motors cleaned, re-lubricated and re-homed; worn gears and belts replaced.
  • Camera & optical-block repair: illumination balance, lens and mirror cleaning, sensor diagnostics, optical-block replacement when needed.
  • Heater / oven calibration: element and wiring service, shrink temperature and time recalibrated.
  • Power, battery & board repair: no-power, boot-loop, charge-circuit and main-board faults diagnosed to the component level.
  • LCD & touchscreen replacement: cracked, blank or unresponsive displays.
  • PM-axis rotational alignment: for polarization-maintaining splicers, with extinction-ratio verification.
  • Cleaver inspection: cleave-angle measurement; many high-loss complaints trace to the cleaver, not the splicer.
  • Final test splicing & certificate: verified against a known reference; NIST-traceable calibration record ships with the unit.

Polarization-maintaining (PM) splicer repair

PM splicing is unforgiving. A small rotational error means a poor extinction ratio and a splice that passes visually but fails in service. Many general service centers don't carry the procedures for PM-specific alignment. We do. Units like the Fujikura FSM-40PM, FSM-45PM, FSM-100P/100P+ and the Ericsson FSU-975PM / FSU-995PM get full rotational-axis re-alignment, stress-rod profile recalibration, rotational-stage service and verified PM test splicing before they ship back.

Legacy & discontinued splicers

If your OEM has discontinued support, or quotes more to service a unit than it's worth, ask us first. We regularly repair older Sumitomo Type-3x/6x units, early Fujikura FSM models, and Ericsson FSU splicers, including the RS-232 and legacy-Windows-controlled units that need their original software to calibrate. We keep a stock of donor parts, electrodes, cleaver blades, mirrors and optical blocks for instruments the OEM no longer supports.

How the repair process works

  1. Request an evaluation

    Use the form, email sales@aumictech.com, or call +1 (484) 841-9341. Tell us the model and what you're seeing.

  2. Ship it in

    Send the splicer with its cleaver, power cord and batteries, ideally in the original case. Including the cleaver lets us evaluate the whole splicing chain.

  3. Free evaluation

    We diagnose the unit at no cost and send a written report plus a flat-rate quote. Nothing proceeds without your approval.

  4. Repair & recalibrate

    We complete the repair, recalibrate, and test-splice against a known reference until results meet spec.

  5. Back to you

    Your splicer ships back with a calibration record. FedEx, UPS or DHL, with international shipping supported.

Frequently asked questions

How much does fusion splicer repair cost?

We diagnose the unit first, then send a flat-rate price before any work begins. No surprise charges. Routine electrode, V-groove and calibration service is the lowest tier; motor, board and LCD repairs are quoted individually based on parts.

Do you offer a free evaluation?

Yes. Send your splicer and we evaluate it at no cost. You get a written diagnosis and a flat-rate repair quote before we proceed. If you decide not to repair, you only cover return shipping.

How long does fusion splicer repair take?

Most splicers are diagnosed within 1–2 business days of arrival and returned within a few business days once approved. Rush service is available; tell us your deadline when you request the RMA.

My fusion splicer has high splice loss. Can it be fixed?

Almost always. High splice loss usually traces to drifted arc calibration, worn electrodes, a contaminated V-groove, a worn cleaver, or alignment-motor wear. We recalibrate, service the electrodes and V-groove, check the cleaver, and verify with test splicing before the unit ships back.

Do you repair PM (polarization-maintaining) fusion splicers?

Yes. PM units such as the Fujikura FSM-40PM, FSM-45PM, FSM-100P and Ericsson FSU PM models need rotational axis re-alignment and stress-rod profile calibration that general service centers often skip. We perform full PM-axis alignment and verify extinction ratio on test splices.

Which fusion splicer brands do you service?

Fujikura/AFL, Sumitomo, Fitel/Furukawa (OFS), INNO Instrument, Ericsson, Corning and most other field splicers, current and discontinued alike. If your model is not listed, send the model number and we will confirm.

Do you replace electrodes and clean the V-groove?

Yes, that is part of standard service. Electrodes are replaced and conditioned; the V-groove and clamps are deep-cleaned. We then run an arc calibration and test splices to confirm performance.

My splicer won't turn on. Is it worth repairing?

Often yes. A no-power or boot-loop condition usually traces to the battery, charge circuit, DC jack, power board or firmware. All are repairable. We diagnose the power rails to the board level and quote a flat rate before any work.

Do you provide a calibration certificate?

Yes. Every repaired splicer is recalibrated and ships with a calibration record documenting arc calibration, alignment verification and test-splice results. NIST-traceable certification is available.

What should I send with my fusion splicer?

Send the splicer, its cleaver, power cord and batteries in the original case if possible. Including the cleaver lets us evaluate the whole splicing setup. Many high-loss complaints trace to the cleaver, not the splicer.