Internal Calibration Procedure (Linearity Adjustment) - KERN ECB Service Manual

3 Internal Calibration Procedure (Linearity Adjustment)

1. Remove the bottom cover under the PCB of the scale.
2. Connect J1 on the main board by soldering the pads together.
3. Place scale on a hard level surface. Turn scale on. Display shall show the internal
counts.
4. The internal counts shall fall in the range from 3 000 to 6 000. In case out of this
range, remove the four screws from the main board and lift it to see the rear side
of the main board.
5. Connect J9 left side or right side to increase or reduce the reading.
Connecting or disconnecting pads on J5, J6 or J7 can fine tune the reading.
4 ECB/ECE-SH-e-0820