CoolArc160 Low-OCV Answer Key

Drill

• CoolArc160 low-OCV drill

Correct First Proof Step

• prove clamp condition, branch power quality, and fan behavior before any internal opening

Acceptable Document Order

1. CoolArc160 measurement card
2. CoolArc160 job packet
3. CoolArc160 board opening map only if the complaint still stays machine-side

Required Takeaways

• low OCV alone does not justify board replacement
• CN104 versus CN108 revision context matters
• internal opening is justified only after current path, fan branch, and support-power behavior are bounded

Failing Moves

• jumping straight to inverter-board suspicion
• skipping clamp proof because the complaint sounds electrical
• ignoring the early fan-revision and polarity trap

Passing Answer Summary

• A correct answer starts outside the machine, proves clamp and fan behavior, uses the measurement card to split the bus and auxiliary path, and only then opens the unit if the complaint still stays machine-side.