What component in the POS diagnostic panel flashes consistently to indicate the system is running normally?

The Heartbeat LED is the component in the POS diagnostic panel that flashes consistently to indicate that the system is running normally. This LED serves as a visual indicator of the device's operational status, showing that the system is actively processing and functioning as intended. A steady or consistent flashing of the Heartbeat LED suggests that the firmware is running correctly and that there are no critical errors or malfunctions present within the device.

While the Power LED indicates whether the device is powered on, it does not provide information about the operational state of the system itself. The Verifone Logo LED typically serves as a branding indicator rather than a status indicator. The Dual 7 Segment Status Display can show information and codes related to the device's performance, but it does not provide a simple and immediate visual cue regarding normal operation like the Heartbeat LED does. This makes the Heartbeat LED a crucial component for troubleshooting and confirming that the POS system is functioning properly.