Image from top electronics CS2X cash register pricing scale Electronic scales can be divided into weight scales, counting scales and price scales according to function points. Among them, price scales are more common, such as price scales used in vegetable markets, fruit shops and supermarkets. The price scale is an electronic scale that can automatically display the price of the so-called commodity. It has higher precision sensors and more complicated control circuits than ordinary weight scales. We may encounter problems of one kind or another in the process of using the pricing scale. How do we solve or judge it? Below I will introduce to you how to deal with common faults of electronic scales. 1. The AC indicator light is off or on. * AC indicator LED The LED is damaged. Remedy: Replace the LED. * The price of the electronic scale of the electronic weighing scale is poor. Remedy: Replace the power cord or re-plug the power cord. * If the fuse is not in good contact or the fuse is broken, remove the fuse or replace the fuse. * Transformer damage, troubleshooting method: Check if the input and output of the transformer are normal and not replace properly. * The charging resistor is broken or burned out. Remedy: Check if the resistance is burned out or breakdown, and replace if it is bad. * The switch is damaged. Remedy: Shorten the switch with a twister to see if there is any reaction, no reaction, replace the switch. 2. Only one "8" is displayed after booting, flash 8 speed becomes faster or buzzer sounds non-stop * The crystal does not vibrate, the method of elimination: replacement. * The reset capacitor is damaged. Remedy: Check the capacitor for short or short circuit and replace it. * The analog switch is damaged. The troubleshooting method is: Check if the analog switch 4051 is normal and not replace it properly. 3. Filling in without electricity * The price of the scale battery is damaged, the troubleshooting method: check the battery after charging, the voltage does not exceed 5.5V, replace the battery. * There is a problem with the charging circuit. Remedy: Check diode 2007, filter capacitor 2000UF, 7808 for breakdown, and replace with a problem. 4. Zero instability, drift * The analog conversion part is damp and components are damaged. Remedy: Clean the analog part with alcohol or replace the components. * Sensor damage, troubleshooting method: After the sensor is opened and the circuit board is turned on, if the display does not drift, the sensor is broken and needs to be replaced. 5. Display the number of missing strokes * The fault is that the display part is wrong. See if the missing strokes are the same on both sides. If the same stroke is missing, the segment and position display part 2003 is bad. Remedy: Replace 2003. * If there are different strokes on both sides, check the digital tube with the missing stroke, and there is a short circuit in the middle. Remedy: Replace the digital tube. 6. No display at boot, buzzer is always ringing * The analog switch is turned on by the CPU. The data received by the A/D conversion is mistaken for overload, so the buzzer keeps ringing, cannot be set to zero, and cannot be calibrated. After inputting the internal code and password, the zero position of the sensor is greater than 6000 codes. Remedy: Replace the analog switch 4051. Multi-Functional Beauty Machine Mesotherapy Machine,Skin Washing Machine,Multi Functional Beauty Machine,Hydro Microdermabrasion Facial Machine Guangzhou Lesen Xinpin Electronics Co.,Ltd , https://www.lesenxinpin.com
What should I do if there is a problem with the electronic scale?