Acom SI-100W Operating Manual page 13

<<Working>>
If the actual back light function is needed after setting, press the
about 3 second (Weighing status "0").
The main propose of this function is for optional working in the darkness
while battery operating.
8. Errors table
Error Meaning
Initial zero error
Memory element has a
problem on main PCB
Analogy PCB has a
problem
Memory problem
Battery discharge
Treatment
Remove weight on the
platter and restart the
scale
Call the service
Call the service
Call the service
Replacement
key
Remarks
Same problem still goes
on, call the service.
Optional