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Shield
Points
Resistance
Red (+E) to Black (-E)
406 ohms ± 6 ohms
Green (+S) to White (-S)
350 ohms ± 3 ohms
If proper excitation voltage is reaching the load cell, check the output signal.
If load cell has an unusual signal, replace that load cell.
Checking Voltages
Using a multimeter, check the mains voltage.
Check the adaptor is outputting a voltage 9 VDC.
Check PCB input voltage 9VDC.
Check battery voltage of at least 6 VDC.
Summary of Contents for QHD+15
Page 20: ... 20 Send PLU text data to be stored with current TARE and U W values ie SPLU01 Parts CR ...
Page 31: ... 31 12 CIRCUIT DIAGRAM ...
Page 32: ... 32 ...
Page 33: ... 33 13 DRAWING ...