Electronic scale fault self-test

No display: Whether the internal battery undervoltage causes automatic shutdown (with built-in battery model)

Whether the AC power supply voltage matches the voltage indicated by the product. Is the fuse blown (using an AC motor type)

2 Cannot charge: Whether the AC power supply voltage matches the voltage indicated by the product. Is the fuse blown (using AC motor type)

3 Digital jitter: Whether the sensor connection is good or not, whether the sensor is damp, whether the sensitivity setting is too small, whether the AD conversion rate is set too high, whether there is vibration, wind blowing, etc., whether the weighing platform touches foreign objects.

4 Poor linearity: Whether the sensor protection device works linearly (with linear calibration model) Whether the weight used for linear calibration is correct (linear correction model), whether the sensor is overloaded

5 Cannot print: Whether the printer type is set correctly, the reading is stable, the stability mark is bright, the printer connection is plugged in, the printer power is on, and the printer is online (24-pin printer only)

6 Unable to accumulate: Whether to return to zero before accumulating is stable when accumulating keys

7 Cannot communicate through the serial port: Whether the baud rate and transmission mode are set correctly, whether the RS-232C connection is good, and whether the RS-232C connection is too long.

8 Boot does not return to zero: Whether the auto zero range is set too small, whether there are items on the weighing platform.

9 Manual zeroing is invalid: Is the manual zero setting too small and the current reading is stable?

10 Cannot be weighed: Is the sensor connection secure and calibrated (linear correction must be performed first for linear correction models)

11 Cannot be calibrated: Whether the weight used for calibration is too small, whether the weight of the weight is too large from the nominal value (usually using the wrong weight), whether it is entered with the super user password (software protection model), whether the short circuit 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: Invalid backlight: Whether the battery is insufficient, the current weight is less than the small amount of Zui.

14 Checking weight is invalid: Whether the current weight is less than the small amount of zui, check whether the weight is turned on.

15 Start beep: Whether it has been calibrated, whether the sensor connection is intact, and whether checkweighing is set.

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