Solenoid power (+33 V) missing. The +33 V supply for the solenoids is absent or out of range; fuse F2 on the SDC board is often blown.
Shown on JUKI machines including AMS-210E, AMS-210EN, AMS-221EN, AMS-224EN, AMS-251, AP874, AP876, APW-895N, APW-896N, DDL-9000CF, DDL-9000CS, LBH-1790A and others.
What to check
- Check fuse F2 and look for a shorted solenoid or wiring before refitting.
Switch the machine off before touching any connector. If the code comes back after these checks, the fault is usually in the 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 110); LBH-1790A instruction manual (page 77); AE-200A instruction manual (page 94); LK-1900B instruction manual (page 68); APW-895N instruction manual (page 123). 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 E904 mean?
Solenoid power (+33 V) missing. The +33 V supply for the solenoids is absent or out of range; fuse F2 on the SDC board is often blown.
How do I fix JUKI error E904?
Check fuse F2 and look for a shorted solenoid or wiring before refitting. If the code stays, the fault is usually in the control boxes, PCBs and sensors.
Which JUKI machines show E904?
In the manuals we have read, E904 appears on AMS-210E, AMS-210EN, AMS-221EN, AMS-224EN, AMS-251, AP874, AP876, APW-895N, APW-896N, DDL-9000CF and other models.