Baby Lock BLMY Service Manual page 193

Failure Investigation for Electronic Parts Error message list
5 - 2
Error display
F01 (5 - 20)
F02 (5 - 21)
F03 (5 - 22)
F04 (5 - 23)
F05 (5 - 24)
F06 (5 - 24)
F07 (5 - 25)
F09 (5 - 26)
Cause
Abnormal rotation in main motor.
Key pressed continually with power ON
(operation system SW).
Key pressed continually with power ON
(operation panel SW).
FC disconnect
Dirty speed sensor
NP sensor disconnect
Speed VR disconnect
EEPROM abnormal