The schematic shows a pi-filter (C1, L1, C2) with a surge-rated varistor (MOV1). Rev 10 adds a 10Ω NTC thermistor (TH1) in series with the live line—previously omitted. This suggests the Rev 10 design addresses inrush current issues from capacitive loads.
18;write_to_target_document1a;_nT7uaaSCEq-RseMPgsTQ-QQ_20;56; 0;55d;0;4c6; asl50 lac921p rev 10 schematic exclusive
The is more than a PDF—it is a repair roadmap. Without it, you are guessing component values, misdiagnosing pulse-skipping as a PWM failure, and potentially creating a fire hazard by replacing the wrong current-sense resistor. The schematic shows a pi-filter (C1, L1, C2)
You can find the schematic and related files through technical archives and specialized platforms: The schematic shows a pi-filter (C1
lists the LA-C921P Rev 1.0 as a popular download for technicians seeking boardview files. Troubleshooting Tips Shorting Issues: