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The parts list describes R209 as:
"Wire wound resistor, 5300 ohms, 20 watt; 500 ohms, 2 watt; and 500 ohms, 2 watt."
Not sure what to make of that description. Why only 2 watts for the 500-ohm segments?
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Power in each segment uses the formula P=(I^2)R. Since the resistor section are in series, the same current would go through all resistor sections. The 500 ohm sections are approximately 1/10 the value of the 5300 ohm section; hence, their power handling capacity would need to be only 1/10 the wattage of the 5300 ohm section.
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