3. Remove the filter cover sheet metal.
4. Pull by the Mylars to remove the filter.
5. Install the filter paying attention to the filter’s directional arrow (it should point inside).
6. Put back the filter case and tighten the screws.
Replace the power-box fan filter (348C5A)
The following steps explain how to replace the power-box fan filter on 3FW25B model printers.
Replace the power-box fan filter (348C5A) 223