8. No Max. capacity appears initially on the screen after
turning on but only the random numbers or white screen
on display.
Main board storage chip (BL24C02) damaged, to replace it
with new one.
9. Zero point not stable, put on small substance, the
reading data on display is much more than its real weight
or “----”appears. Unable to have a normal calibration after
press
button .
Put on wrong weight when calibration or the weighing
substance is much less than calibration weight which leads to
inner criterion amplified. Press
till “ CAL-d * “ on display
(it has different d on display by different capacity), press
repeatedly till “ CAL- d “ which is as same as max. capacity,
then keep waiting till “ CAL- d “ flashing on the screen, put on
the weight corresponding to the data on display.
10. Reading data unstable during weighing process
1. There are airflow or vibration around the working area. To
change the working place.
2. Maybe the pan or load cell are touched by some other
things. To make the surroundings of the pan and load cell
clean enough.
3. The plug between load cell and indicator is looseness or its
touch spot oxidation (or B, L, D models only). To tighten and
fasten it, if still not working, should replace the plug on the
indicator (9 core serial port socket)
4. Indicator power voltage is unstable, just to have the battery
recharged or connected to the main power supply.
5. Indicator inner AD chip (CS5530) or load cell power circuit
(GM6155) damaged. To replace AD chip or checking the
power supply voltage, to replace the chip (GM6155).
