Honeywell MS3780 Fusion Setup/Service Instructions page 13

Failure Mode Indicators
Both Blue LEDs Flashing with One Emitted Razzberry Tone
This indicates that the scanner has experienced a laser subsystem failure and must be replaced.
Both Blue LEDs and the White LED Are Flashing with Two Emitted
Razzberry Tones
This indicates that the scanner has experienced a motor failure and must be replaced.
Continuous Razzberry Tone with Both LEDs off - on Power up
A continuous razzberry tone on power up indicates that there has been an electronic failure
and must be replaced.
Three Beeps - on Power up
This indicates that the non-volatile memory that holds the scanner configuration has failed and
must be replaced.
MDE-4636C Honeywell® MS3780 Fusion Scanner Setup/Service Instructions · July 2021
Fusion Scanner
Page 13