Motor encoder error (U/V/W). The U, V, W position signals from the main motor are missing. Same family of fault as E730.
Shown on JUKI machines including 910N, AMS-210E, AMS-210EN, AMS-221EN, AMS-224EN, AMS-251, AP874, AP876, APW-895N, APW-896N, DDL-8700B, DDL-9000CF and others.
What to check
- Check the encoder cord and connector at the SDC board; replace the encoder or motor if needed.
Switch the machine off before touching any connector. If the code comes back after these checks, the fault is usually in the servo motors or control boxes, PCBs and sensors.
Request a repair for this error or WhatsApp the code and your model to +91-9643480908 (Monday to Saturday, 10:00 AM to 8:00 PM (closed Sunday)).
Source
Summarised by Shankar Sewing from the LK-1900A engineer manual (page 109); SC 510 EG Instruction Manual (page 39); SC 510 ES instruction manual (page 39); DDL-9000CF instruction manual (page 72); AC-172N instruction manual (page 89). The manual has the complete procedure and connector numbers for your exact model.
Other JUKI error codes
E007 Motor overload · E011 External media not inserted · E012 Read error on external media · E013 Write error on external media · E015 Sewing area exceeded · E016 External media full · E019 File size over · E032 File not compatible · E302 Machine head tilt detected · E303 Main shaft Z-phase sensor error · E703 Panel connected to the wrong machine · E704 System version mismatch · all JUKI codes
Frequently asked questions
What does JUKI error E731 mean?
Motor encoder error (U/V/W). The U, V, W position signals from the main motor are missing. Same family of fault as E730.
How do I fix JUKI error E731?
Check the encoder cord and connector at the SDC board; replace the encoder or motor if needed. If the code stays, the fault is usually in the servo motors or control boxes, PCBs and sensors.
Which JUKI machines show E731?
In the manuals we have read, E731 appears on 910N, AMS-210E, AMS-210EN, AMS-221EN, AMS-224EN, AMS-251, AP874, AP876, APW-895N, APW-896N and other models.