The measurement shows the deviation. LYO helps you fix it.
AI-assisted troubleshooting for your paint line, developed with S4P's field experience. In pilot operation, available to pilot customers.
The name comes from the Greek lyo, to solve.
The spray pattern goes off, and the one colleague who has seen it before is on leave. Often the case is already written up in an inspection report or a checklist. In the pilot we make those documents searchable, and the shift lead asks LYO.
See LYOA part survives one round of rework. After the second defect it is scrap. So the Technical Process Analysis looks for the cause where it often sits, upstream of application, in pretreatment, booth and air handling.
How we trace the root causeWhat experienced people on the line know is rarely written down. In the pilot they talk, we turn it into knowledge cards, and they review every card. Their name stays on it.
How knowledge is capturedWhen something is off on the line, the fix is often already written down in an inspection report, a checklist or a table of limits. In the pilot we prepare these documents, and LYO makes them searchable on the line.
A question like “Bad spray pattern after a hanger change, what do I check?” is enough. The answer is a set of checks, with the knowledge trail beside it.
Question
The spray pattern on the clearcoat robot has been unstable since the early shift. What do I check first?
Troubleshooting steps
Knowledge trail
What was found?
TPA Master
Automatic air cap cleaning after every skid, but no rule for changing or replacing gun, air cap and nozzle head.
Store spare parts separately and check them before use, with spray pattern and cleaning.
Check and clean the drying air ring daily when changing the air cap.
In the pilot your experienced people talk, and we write knowledge cards from it with AI assistance. Each card carries the name of the person the knowledge comes from, and its status: draft, reviewed, verified.
Skid grounding, act at once
If the grounding resistance at the skid is above the trigger value or the connection is broken, the line stops at once and the grounding pin is cleaned or replaced.
In the pilot we organise your documents by TPA chapter and by Ishikawa category. Measurement comes first, because a measurement system error is ruled out before anything else.
Cause catalogue, adhesion failure after the TST test
Checked in this order
Causes in the catalogue
If the main cause sits in the measurement system, a second device confirms the reading before the analysis is signed off.
LYO works with documents. ProSense One can add readings whenever you need them.
The knowledge base is made of documents about the process, and no camera images go into it.
If a question names a date, only a source with exactly that date counts as evidence.
Wherever a language model is involved, fixed rules apply.
Next to every answer is the knowledge trail, the document and, where there is one, the section, such as TPA 6.4. Anyone in doubt can look it up.
The language model is instructed to answer only from the sources found. If they fall short, the answer says so and names what is missing.
Your question and the few excerpts that match it best, with title, location and date, go to an external provider's language model. It never sees the whole knowledge base.
The TPA works through a paint line chapter by chapter, from part carriers to general infrastructure. No chapter is skipped, because skipping one would make plants impossible to compare.
The first checks cover everything upstream of the robot: part carriers, pretreatment, booth and air handling.
If a sensor fault is suspected, a second instrument confirms the reading before anyone adjusts the dosing.
An action is closed once it demonstrably works in series production.