A: Minimum: True-RMS multimeter, insulated screwdrivers, thermal paste applicator, and an oscilloscope (100 MHz minimum) for timing verification. The manual lists Fluke 87V and Rigol DS1054Z as approved references.
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The E-PSMP-01 is often part of a safety circuit. The service manual contains the safety logic matrix. Bypassing or misdiagnosing a fault could lead to unexpected motor starts or power surges. A: Minimum: True-RMS multimeter