Xk3190-a7 electronic platform scale maintenance process

Electronic platform scale is a weighing device widely used in the industry. In the course of use, it will inevitably encounter the failure of electronic scales; then how to solve the problem of electronic scales, today Xiao Bian to xk3190-a7 electronic scales The maintenance process as an example to teach everyone how to deal with, as follows:

Xk3190-a7 electronic platform scale maintenance process:

1. ERR05

Maintenance process: Since the A7 meter has two A/D boards and a motherboard, after replacing a good A/D board, the meter still shows ERR05. If the board is suspected to be damaged, first check that the 8V voltage is normal, indicating that the power supply is working properly. After the 8952 (ICI) meter weighing was normal.

2. ERR05

Maintenance process: Using the alternative method to learn that the instrument A/D board is damaged, first check that the voltage at Pin 6 of the OP177 (ICI) is 7.6V. In the empty condition, the voltage at this point should be about 3.9V. After replacing the OP177 chip, the 6-pin voltage recovered to 3.8V, indicating that the analog amplifier circuit is working properly, but the meter still shows ERR05. It is suspected that the CD4066 is damaged and the meter is properly weighed after replacement.

3. Drift

Maintenance process: Using the replacement method to learn that the instrument board is damaged, first check the 8V voltage to 11.8V. After the 7808 replacement, the voltage is restored to 7.9V. Use a multimeter to measure the short circuit between the 7808 input pin and the output pin. After recalibration, the meter works normally.

4. DC cannot start

Maintenance process: The AC power meter works normally, indicating that the fault is in the DC power supply section. First check the 12V DC voltage to 10 V. After changing the 12V DC battery, the meter can work normally. This indicates that the battery voltage is too low. After 48 hours charging, the meter works normally. .

5. DC cannot start

Maintenance process: After the start button is pressed, the instrument indicator light is on, but the instrument is not displayed. The measured battery voltage is 11.9V. This indicates that there is no problem with the DC circuit and battery of the instrument. It is suspected that the ship-shaped switch will be damaged and the DC of the instrument will work normally after the replacement.

This article is provided by Shanghai Shigan Industrial Co., Ltd. Thank you for your support and trust; if you want to learn more about electronic scales information, you may wish to call our consulting oh; users concerned about this article are also concerned about: explosion-proof platform scales, Waterproof electronic platform scales, counting platform scales, weighing electronic platform scales, electronic platform scale sensors;