natus OLYMPIC SMART SCALE 60 Mode D'emploi page 40

Problem
"Charging" light does not
illuminate when power is present.
Scale inaccurately weighs.
Scale will not calibrate; stops at
"C 0".
Scale will not calibrate; stops at
"C 7500".
Error code "E901".
Error code "E905".
Probable Cause
Blown fuse.
Battery pack is not connected properly.
Battery pack is defective.
Malfunctioning main PCB.
Malfunctioning power supply PCB.
Malfunctioning display PCB.
The spider or tray is rubbing against
something.
Unit is out of calibration.
Wrong value weight used for calibration
or improper calibration.
Malfunctioning loadcell.
Malfunctioning main PCB.
Malfunctioning power supply PCB.
Weight in tray.
Tray not on scale.
Scale is subject to vibration.
Zero offset is out of adjustment.
Malfunctioning loadcell.
Incorrect calibration weight used.
Scale is subject to vibration.
Zero offset is out of adjustment.
Malfunctioning loadcell.
Cal Error: Counts are out of allowable
capture window.
Zero offset is out of adjustment.
Check Sum Error: Non-volatile memory
corrupted or defective.
Possible electromagnetic interference
issue.
The error code can be cleared by
calibrating the scale.
OLYMPIC SMART SCALE
Section 3: Service
Solution
Replace the fuse (see Replacing the Fuse on
page 3-15).
Check the battery pack connection (see Replacing
the Battery Pack on page 3-14).
Replace battery pack (see Replacing the Battery
Pack page 3-14.
Test the board (see Problems and Solutions on
page 3-10).
Test the board (see Problems and Solutions on
page 3-10).
Replace the display PCB (see Removing Internal
Components on page 3-16).
Ensure that tray is not rubbing against objects
(e.g., power cord, blankets). Remove the scale
enclosure and align the spider so that it is parallel
to the long end of the scale base. Ensure that
no objects (e.g., cables, enclosure) are causing
interference.
Calibrate the scale (see Calibration on
page 3-1).
Calibrate the scale (see Calibration on
page 3-1).
Test the loadcell (see page 3-13).
Test the board (see Problems and Solutions on
page 3-10).
Test the board (see Problems and Solutions on
page 3-10).
Ensure that the tray is empty.
Replace the tray.
Place the scale on a stable surface.
Adjust the zero offset (see page 3-17).
Test the loadcell (see page 3-13).
Use an NIST traceable 7500 ±1 gram weight.
Place the scale on a stable surface.
Adjust the zero offset (see page 3-17).
Test the loadcell (see page 3-13).
Probable loadcell failure. Test the loadcell (see
page 3-13).
Adjust the zero offset (see page 3-17).
Probable main PCB failure. Test the board (see
Problems and Solutions on page 3-10).
Calibrate the scale (see Calibration on
page 3-1).
Calibrate the scale (see Calibration on
page 3-1).
® Model 60/65
Page 3-21