How to Check for Faults in Electronic Scales
1. No display: Whether the internal battery undervoltage causes automatic shutdown (with built-in battery models).
Whether the voltage of the AC power supply matches the voltage marked on the product and whether the fuse is blown (use the AC motor type).
2. Unable to charge: Whether the voltage of the AC power supply matches the voltage marked on the product, whether the fuse is blown (use the AC motor type).
3. Digital beating: Whether the sensor connection is good, whether the sensor and the display are damp, whether the sense value is set too small, whether the AD conversion rate is set too high, whether there is interference such as vibration and wind, whether the weighing platform touches foreign objects.
4. Poor linearity: whether the sensor protection device is functioning or not, whether it has been linearly corrected (with linear correction models), whether the weights used for linear correction are correct (with linear correction models), and whether the sensor is overloaded.
5. Unable to print: Whether the printer type is set correctly, whether the reading is stable, whether the stability mark is on, whether the printer is connected well, whether the printer is powered on, whether the printer is online (only 24-pin printers)
6. Unable to accumulate: whether to return to the zero position before accumulation, and whether it is stable when pressing the accumulation key.
7. Unable to communicate through the serial port: whether the baud rate and sending method are set correctly, whether the RS-232C connection is in good contact, and whether the RS-232C connection is too long.
8. Does not reset to zero when power on: Whether the automatic zeroing range is set too small, and whether there is any item on the weighing platform.
9. Manual zeroing is invalid: whether the manual zeroing range is set too small, and whether the current reading is stable.
10. Unable to weigh: Whether the connection of the sensor is firm and whether it has been calibrated (for models with linear correction, linear correction must be performed first).
11. Whether to enter with the super user password (software protection model), whether to short-circuit the correction jumper (lead seal protection model).
12. Does not return to zero after unloading: whether the zero tracking setting is too small, and whether the weighing platform touches foreign objects.
13. The backlight is invalid: whether the battery is insufficient, and whether the current weight is less than the minimum scale.
14. Invalid check-weighing: whether the current weight is less than the minimum scale, and whether the check-weighing beep is turned on.
15. Start-up beep: whether it has been calibrated, whether the sensor connection is in good condition, and whether the check weight is set.
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