The invention relates to a printhead module assembly for a pagewidth printer system. The defect detection apparatus includes at least one light illumination device, at least one imaging device and at least one defect detection unit. Data based on the received signal may be sent from the electronic device to a remote location for further processing. Such an illuminating device may be desirable for use, for example, as a portable illuminator, book light, and travel light. The dielectric material is masked and dry etched to leave a first portion of dielectric material over a first end of the thin film resistor and a second portion of dielectric material over a second end of the thin film resistor. Separate digitized streams are separately generated for each microcell antenna unit representative of RF signals received at the microcell antenna unit for a particular sector.