Marlin 7"

5 of 5 codes

• 1 blinkSelf-test errorCritical

  Signal1 blink + 1s pause

  The board's power-on self-test failed

  CauseInternal hardware fault at startupRemedyPower-cycle the display; if it persists, return/replace the board
• 2 blinksCAN bus reception timeoutCritical

  Signal2 blinks + 1s pause

  No messages received on the CAN bus for more than 5 s

  CauseCAN cable disconnected/damaged; motherboard off or not transmitting; termination misconfiguredRemedyCheck CAN-L / CAN-H wiring on J2–J3; verify the motherboard is powered and running; set J7-R120 termination ON if the display is a bus end
• 3 blinksCAN bus transmission errorCritical

  Signal3 blinks + 1s pause

  Problem transmitting on the CAN bus

  CauseBus short or overload; wiring/termination issue; faulty node on the busRemedyInspect CAN wiring and termination; check other devices on the bus
• 4 blinksEEPROM read errorWarning

  Signal4 blinks + 1s pause

  Failed to read parameters from EEPROM

  CauseCorrupted stored parametersRemedyReload parameters via Atlantis EVO / microSD; if persistent, return the board
• 5 blinksEEPROM write errorWarning

  Signal5 blinks + 1s pause

  Failed to write parameters to EEPROM

  CauseEEPROM worn or faultyRemedyRetry programming; if persistent, return the board