Simplex 8566-719 — NXP Master Controller board for the 4100ES fire alarm control panel.The master controller is the processor module that runs the site-specific program and drives the operator interface and panel communications. A technician reaches for it when a 4100ES will not boot or reports a master controller trouble that a program reload does not clear. It is only half the replacement: the 2GB compact flash holding the job data is a separate part number and must be carried over or supplied. Simplex description: NXP Master Controller Bare PC board assembly: 566-719 Installation instruction: 579-943 Interconnection harness: 746-180 Sales feature PID: 4100-7158 Compact flash, ordered separately: 746-177, 2GB Reacceptance testing per NFPA 72 is required after replacing a master controller. Simplex publishes no standalone datasheet for this service number, so confirm the number printed on the board you are removing before ordering.
