ThunderCut65 Board Opening Map

This is the fast internal opening map for ThunderCut65 once torch, air, clamp, and guide-hardware branches are already bounded.

Open Only After Proving

fresh A81 front-end stack is already proven
air pressure under flow is already normalized
torch-head mechanics and guide hardware are already separated from the base machine
freehand cutting is already compared against guide or stand-off hardware

First Internal Targets

Board or internal group	Open first when...	Key connector or checkpoint	Best local file to open first
Torch-head versus control split	postflow is normal but start still fails	torch-head mechanics before board blame	`ThunderCut65_service_manual.pdf`
Pilot-maintain-current branch	pilot changes with RV1 or pressure tuning	pilot-current branch and restrike behavior	`pilot_arc_maitain_current.pdf` and workbook
Main control or output branch	air and torch mechanics are proven but start still fails	common power or control branch	`ThunderCut65_service_manual.pdf`

Connector and Board-Family Reminders

Do not call the board bad while pressure or RV1 still changes the symptom.
Keep guide and stand-off complaints outside the chassis until freehand baseline is proven.
This family has a strong local history of torch-head and wiring faults mimicking control failure.
Do not open the machine while only guided cutting is bad and freehand cutting still looks healthy.

External Parts Exit Paths

If the opening pass shows the complaint still follows the torch, guide, or air branch, leave the board path and use the official ordering flow instead.
ThunderCut65 parts category: official parts path
A81 torch ecosystem: official A81 parts path
Guide carriage 07CV0051: official product page
Stand-off guide 07CV0028: official product page

Stop Rules

Stop if pressure or RV1 correction changes the symptom immediately.
Stop if torch-head or guide correction removes the complaint.
Stop if freehand cutting is healthy and only guide or stand-off hardware changes the complaint.
Stop and return to the full guide if pilot, restrike, and output evidence still overlap after the first opening pass.

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