The SCPH-5502 series, manufactured between , introduced several critical hardware refinements designed to fix the flaws of earlier "Fat" models:
Sony moved the laser assembly further from the power supply to reduce heat-induced "CD skipping". playstation scph5502 v30 europe bios scph5502bin
To cut costs and simplify the design, the direct RCA jacks and RFU power connectors were removed from the rear panel, replaced by a single AV MULTI OUT port. The Role of scph5502.bin (v3.0 BIOS) The SCPH-5502 series
This model utilized the PU-18 motherboard , which simplified the chipset with digital servos for focus and tracking, replacing the manual calibration needed in older units. playstation scph5502 v30 europe bios scph5502bin