OHAUS RU-U2 - Main Logic PCB

Service Manual RU OHAUS
Page 19 / 53 11/01/2010 Ohaus
8. Main Logic PCB
The Main Logic PCB receives +24VDC from the Power Supply and uses this to supply
+10VDC and +5VDC to other components. The Main Logic PCB controls all functions
in the unit including the thermal printer. Inputs and Outputs to the Main Logic include
the Label Taken Sensor, Gap Sensor, Printer head, Stepper Motor, Rewind Motor,
Load Cell and etc. The following Figure shows the locations of the various components
and connectors on the Main Logic PCB.
If the voltages are not within the range specified, and the Power Supply voltage is
correct, replace the Main Logic PCB.
NOTE:
WHEN REPLACING THE MAIN LOGIC PCB, THE UNIT MUST BE REFLASHED.