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E906 Communication error toward the control 1. Disconnection of the control panel cords 1. Check whether the control panel connectors (CN34, CN35) are loosened or disconnected.
panel 2. Control panel damaged 2. Check whether the control panel cords are broken because of being caught by the
machine head or the like.
E920 GA failure Abnormality of gate array When return is not performed even after turning OFF the power, the possibility of gate
array breakage is large.
E922 Main shaft motor control is impossible. When main shaft motor cannot be controlled. Turn OFF the power.
E924 Motor driver failure Motor driver has broken. Turn OFF the power.
E930 Encoder failure When the motor signal is not properly inputted. Check the motor signal connector (CN38, CN39) for loose connection and disconnec-
tion.
E931 Motor hole sensor failure Check whether the motor signal cord has broken since the cord is caught in the
machine head or the like.
E939 Stepping motor origin retrieval error When the origin position of the stepping motor is not Check the detecting connector (CN139) for loose connection and disconnection.
detected at the time of turning ON the power. Check whether the detecting connector (CN139) is wrongly inserted.
E940 Bird's nest sequence error Bird's nest prevention sequence is not completed. Turn OFF the power.
E941 GA failure Abnormality of gate array When return is not performed even after turning OFF the power, the possibility of gate
array breakage is large.
E942 EEPROM failure Writing is not completed even after the lapse of 10 Turn OFF the power.
[ms] or more.
E944 Left needle is uncontrollable. In case of LH sewing machine with organized split Check whether needle control connectors (CN55 and CN56) are loosened or discon
needle bar mechanism nected.
1. Same error is not detected yet. Check whether the present program is arranged for the simultaneous driving of
2. Home position signal is ON when left needle is multiple solenoids with the step pattern of IP-110.
locked.
3. Home position signal is OFF when left needle is
released.
E945 Right needle is uncontrollable. In case of LH sewing machine with organized split Check whether needle control connectors (CN55 and CN56) are loosened or discon
needle bar mechanism nected.
1. Same error is not detected yet. Check whether the present program is arranged for the simultaneous driving of
2. Home position signal is ON when right needle is multiple solenoids with the step pattern of IP-110.
locked.
3. Home position signal is OFF when right needle is
released.
No. Description of error detected Cause Item to be checked or corrective measure
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