Operating instructions

8 Neonatal Technical and Operating Instructions
6.0 Troubleshooting & Testing
Refer to the following instructions to check and correct any failure before consulting service personnel.
Symptom Possible Cause Corrective Action
Scale does not turn on when using the
rechargeable battery
Dead battery Connect the scale to a power source
Scale does not turn on Dead battery Connect the scale to a power source
Faulty electrical outlet Use a different electrical outlet
Bad power supply Replace adaptor
Questionable weight or the scale does
not zero
External object is interfering with the scale Remove the infant/interfering object from
the weighing tray from the scale
Display did not show 0.0 before weighing Remove the infant, zero the scale and
begin the weighing process again
Scale is not placed on a level surface Place the scale on a stable surface and
begin the weighing process again
The weighing tray is not placed properly Place the weighing tray in its proper place
Scale is out of calibration Check the weight with a known weight
value
The display shows a STOP message The load on the scale exceeds the
capacity
Remove the excess weight and use the
scale according to its stated limit
The display shows LO Bat message The rechargeable battery is low Recharge the battery according to
instructions
The display shows -------- message The load is in under-load condition Make sure the weighing tray is placed on
the base properly
The display shows Err message as detailed in the table below
Err 2 Low saturation state (low A/D) The load cell is not connected properly.
Check the cables and mechanical
connections. If the problem persists,
replace the load cells.
Err 3 High saturation state (high A/D) See Err 2
Err 6 Unstable weight. Cannot calibrate Check the load cells’ mechanical
surroundings and see that nothing
touches them and that the cables are
properly welded.
Err 7 Mathematical error; division by zero.
Cannot calculate the calibration factor
Will show then trying to calibrate with no
calibration weights on the scale
Table 6-1. Troubleshooting Table