• Connect a device:
  • Log in to admin interface:
  • Run the Setup Wizard:
  • Save and reboot if prompted.

  • | Error Code | Symptom | Solution | |------------|---------|----------| | E-01 | No LED after power-on | Check VIN+ polarity; internal fuse F1 (1.5A resettable) may have tripped. | | E-07 | CAN bus off | Terminate bus with 120Ω resistor between pins 5 & 6. | | E-12 | Checksum fail on boot | Re-flash firmware using ZYX-DFU tool (hold button B1 while powering). |

    To master these, spend an hour working through the “Advanced Application Examples” appendix.


    If you need the official, manufacturer-issued document (including schematics, parts list, and warranty terms), here are your best options:

    ⚠️ Warning: Avoid scam sites asking for credit card info to “unlock” the manual. The ZYX-J30 manual is freely distributable.


    Error codes like CAL, Err-2, or UNST often mean your scale needs calibration. Here is the standard calibration procedure (note: your model may vary slightly).

    Document ID: ZYX-MAN-J30-Rev4.2
    Hardware Compatibility: ZYX-J30 Base, J30 Pro, J30 Lite
    Language: English (International)

  • Back panel:

  • Pro tip from the official ZYX-J30 manual supplement: If calibration fails, check battery level (low batteries cause errors) and ensure no drafts. Repeat up to three times.