Independent Mitsubishi laser service for preventive maintenance, troubleshooting, repair, geometry correction, and machine optimization—serving manufacturers across Northern Illinois and greater Chicagoland.
At A&T Top Notch Service LLC, our mission is simple: help manufacturers maximize uptime through professional field service, preventive maintenance, and honest technical support.
Founded by Austin Larson, A&T brings more than 15 years of hands-on Mitsubishi laser field experience across CO₂ and fiber systems, with a service background supporting manufacturers throughout North America and internationally.
A&T gives manufacturers a focused independent Mitsubishi laser service option built around technical depth, direct communication, detailed documentation, and long-term equipment reliability.
Started servicing Mitsubishi laser systems as a field technician, building hands-on experience with CO₂ and fiber equipment.
Expanded independent field-service experience and built direct relationships with maintenance teams across the country.
Formalized 15 years of experience into A&T Top Notch Service LLC.
From routine upkeep to a machine down on the floor, right now.
Routine inspections designed to maximize uptime and reduce unexpected failures.
Direct troubleshooting and repair support when production is at risk.
INDEPENDENT PARTS SOURCING
A&T can source quality compatible or equivalent maintenance items—including batteries, filters, vacuum-pump oil, and other common service parts—often at a lower cost than OEM-branded channels. Compatibility, available options, and pricing are reviewed with the customer before installation. Genuine OEM parts can also be used when requested or required.
Focused exclusively on independent field service for Mitsubishi CO₂ and fiber laser systems.
A look at the inspection, diagnosis, maintenance, and verification work behind reliable Mitsubishi CO₂ and fiber laser performance.
Before maintenance, the mode on the left shows lens contamination contributing to poor cut quality. After preventive maintenance, replacement of the protective window and cutting lens produced the clean mode shown on the right.
Because the operating laser beam is invisible, the RDL reference must be precisely centered through every bend mirror to maintain consistent cut quality across the full table area.
The oscillator cabinet—where the laser modules combine into the output fiber—was overheating and had been left open, allowing critical dust contamination. The cabinet was cleaned and decontaminated, then fitted with new desiccant to help control dew point.
A bank-unit failure followed neglected cabinet cleaning. The failed bank unit was replaced and the remaining components were thoroughly cleaned to support reliability and service life.
Laser cooling depends on clean DI water, correct conductivity, and unrestricted flow. Contamination like this can reduce cooling performance and threaten critical laser components.
A low-water-flow alarm had stopped production. Inspection found the chiller Y-strainer clogged with debris and restricting cooling-water flow.
Flexible maintenance options are scoped around machine condition, operating hours, and planned downtime. Final scope and dates are confirmed before scheduling.
Ideal for single-shift operations, lower production, and smaller fabrication shops.
For busier shops that benefit from multiple planned maintenance touchpoints.
For high-use machines that need a customized, deeper maintenance scope.
No shortcuts, no guesswork — the same inspection sequence, every time, documented in writing.
Hands-on CO₂ and fiber laser field experience—not just repair, but understanding how the machine performs.
Professional Mitsubishi laser support with direct access to the technician doing the work.
Every visit includes:
You'll work directly with the technician performing the service. No call centers. No middleman.
Weekdays. Weekends. Shutdowns. Production breaks.
If it doesn't need to be replaced... we'll tell you.
Whether it is planned preventive maintenance, a troubleshooting question, or an unexpected machine issue, reach out to discuss the equipment, location, and timing.
Austin Larson — Family-Owned Business
✉ REQUEST A QUOTEA&T Top Notch Service LLC is an independent service provider. It is not affiliated with, authorized by, sponsored by, or endorsed by Mitsubishi Electric or its affiliated companies. Mitsubishi and related names are trademarks of their respective owners and are used only to identify the equipment serviced.