Quick Reference: Power Module Blink Codes

Blinks	Meaning	Top Priority Action
Steady Flashing	Boot-up (normal if under 1 minute)	If it lasts over 1 minute, check for the machine's WiFi network.
1 Blink	Critical Low Voltage	Charge battery; check ground and fuse.
2 Blinks	Master Watchdog Timeout	Reboot; check CAN bus resistance ~60 Ohms.
3 Blinks	CAN Communication Fault	Check for loose cables or low voltage spikes.
4 Blinks	Tablet Connection Lost	Reconnect tablet; exit Diagnostics Mode.

Pro-Tip for All Blink Codes

Most hardware errors are tied to Power or Communication. If you are seeing recurring blinks, the two most effective tools in your kit are:

1. A Battery Charger: Ensure you are reaching 14.0V+ to add capacity.

2. A Multimeter: Ensure you have ~60 Ohms between the Green and Yellow wires in the Power Module — see CAN Bus Resistance Check for the full testing procedure.