OAI J500/VIS Mask Aligner Laboratory Unit for Spares/Repairs

The OAI Optical Associates Model J500/VIS Mask Aligner is a specialist piece of photolithography equipment once part of a university laboratory. Though it powers on, it necessitates refurbishment for complete functionality. Upon inspection, while one optical microscope light illuminated and displayed an image, the other did not, suggesting a replacement bulb is needed labeled "Bulb Blown." Optical cables were exchanged, confirming that the microscope functionality remains intact. The UV Light Controller malfunctions with this unit—audible clicking sounds were noted—though it performed appropriately on a different J500/VIS unit, indicating an issue with the main unit’s UV feature. Mechanical movements of the microscope remain smooth, yet joystick control is non-functional. This equipment is in good cosmetic shape with only superficial marks and is ideal for spares or repairs.