P/N: XAA428 PCB: CBD178C CBD178CG1 , Motherboard for Horiba ABX

Horiba ABX XAA428 Motherboard (PCB CBD178CG1, “P/N XAA428”)The main system logic board for Horiba ABX Pentra series hematology and chemistry analyzers. It orchestrates sample handling, reagent dosing, sensor interfacing, and user‑interface communications, ensuring reliable, high‑throughput clinical testing. Key Specifications Processor: Embedded 32‑bit microcontroller with watchdog timer Memory: Battery‑backed SRAM for assay data storage I/O: RS‑232, TTL sensor inputs, stepper motor drivers Backplane: 64‑pin DIN connector for instrument bus Power: +5 V and +12 V rails from instrument PSU Diagnostics: Front‑panel status LED; built‑in self‑test routines As the heart of the analyzer, this board maintains precise timing and coordination of fluidics, optics, and data processing modules.