A100 Measurement Card

This is the quick live-reading card for the highest-value A100 branch-power, OCV, and blinking-light splits.

Use This Card When

the machine appears dead
there is no output or weak output
the power light blinks slowly or fan behavior looks wrong

Prove First

stable 120 V class branch power on a 20 A circuit when possible
known-good clamp and holder path
dry rods and clean steel baseline with 3/32 in 7018 or 6010/6011 class rod

Fast Measurement Card

Checkpoint	Where to measure or observe	Healthy expectation	If abnormal, keep diagnosis in...
Input branch under attempted load	at the machine input	stays in a usable 120 V range on a 20 A branch or healthy 3 kW generator baseline	utility path
OCV at output studs	output studs with the machine healthy	about mid-80 V class OCV	output or IGBT branch
Rectifier DC when the machine appears dead	rectifier side in the dead-machine split	present if switch or low-voltage supply is the real fault	switch or low-voltage supply branch
Power light and fan state	live observation on power-up	steady normal operation, not slow blinking collapse	fan or support-power branch
Yellow protection light during short proof weld	live observation during 7018 or 6010/6011 test	stays off in normal short proof welds	airflow, fan, or source-strength branch
Stock holder and clamp heat	after a short proof weld on the fitted lead set	no rapid abnormal heat in the 5 ft AWG #6 stock lead path	external current path

Official Parts Shortcuts

Use these only after the readings prove the complaint follows the clamp, holder, or utility-side accessory branch.
A100 accessories path: official A100 accessories path
Stock holder KAA20010: official product page
Heavy-duty holder 07000460: official product page
Heavy-duty clamp 07000461: official product page

Stop Rules

Stop if a better clamp or stronger outlet changes the complaint immediately.
Stop if the machine is being tested as TIG, because A100 is officially a stick-only platform.
Stop if blinking-light or fan behavior clearly points to the support branch.
Stop using the card and open the full guide if utility, support, and output evidence still overlap.

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