**Maintenance and Troubleshooting Guide for the Balance**
The balance must be handled with care. The pan and outer casing should be gently cleaned using a soft cloth. Avoid using strong solvents, as they may damage the surface or internal components.
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### **Failure and Elimination**
| No. | Failure | Reason | Solution |
|-----|---------|--------|----------|
| 1 | The display is not lit at all | - The balance is not properly connected to the power supply
- The balance display switch is not open
- Instantaneous signal interference
- Adapter is faulty
- Host panel is damaged | - Power on the device
- Press the “Start†button
- Re-switch the balance or re-plug the power cord
- Replace the adapter
- Replace the host panel | | 2 | Only shows " " (upper line segment) | - Exceeds maximum load
- Internal memory calibration number is destroyed
- Weighing plate is not installed | - Reduce the load immediately
- Recalibrate by following the “Calibration Balance†procedure. Place the standard weight on the pan, wait about 8 seconds until stable, then check the result
- Reinstall the weighing plate | | 3 | Only shows " " (lower line segment) | - Weighing plate is not installed
- Weighing pan is not placed or not lit
- Limit screw is loose | - Reinstall the weighing pan
- Check the sensor | | 4 | Weighing display value is unstable (data jitter) | - Airflow disturbance
- Unstable worktable
- Short balance time
- High sensitivity at room temperature | - Close the windproof door
- Place the balance on a stable table
- Increase integration time if possible
- Control the room temperature | | 5 | Weighing results are inaccurate | - Not tared before weighing
- Balance not calibrated or calibration weight is incorrect
- Incorrect power supply voltage | - Press the “Tare†button
- Recalibrate the balance
- Use the correct power supply
- Check four-corner error | | 6 | Display shows a certain digit or meaningless symbol | - External interference
- Incorrect power supply voltage | - Restart or re-plug the power
- Ensure correct power supply | | 7 | Stable mark “0†does not disappear | - Balance is too sensitive
- Poor environmental conditions (e.g., air flow, vibration, temperature changes) | - Select a more stable location
- Improve the environment | | 8 | Always shows “--†(wait state) | - Poor environmental conditions
- Balance is too sensitive | - Improve the environment
- Adjust sensitivity to third gear | | 9 | Displays “Err--1†or “Err-2†| - Instantaneous interference
- Balance is faulty | - Restart or re-plug the power
- Send for inspection or replace modules such as 93C46 or 16V8D | | 10 | Shows “CAL†or “Err†| - Objects left on the pan before calibration
- Incorrect calibration weight
- Not tared before calibration
- Pressed calibration button without being in weighing mode | - Remove objects and reset
- Calibrate with accurate weights
- Tare before calibration
- Enter weighing mode first | | 11 | Rightmost unit not displayed | - Balance not calibrated
- Internal calibration data lost | - Calibrate the balance
- Re-calibrate if necessary
- Check for sensor damage | | 12 | Shows “Cou--Err†| - No preset constants during point operation
- Too much or too little weight when presetting | - Perform average point preset
- Calibrate the balance if needed | | 13 | No display at all | - Faulty adapter
- Damaged panel
- Faulty motherboard
- Power board is broken | - Replace the adapter
- Replace the control panel
- Replace the motherboard | | 14 | Weighing weakness | - Faulty photoelectric board | - Replace the photoelectric board | | 15 | Jumping words appear | - Foreign matter in the sensor | - Clean foreign matter from the magnetic system | This guide provides detailed troubleshooting steps for common issues that may occur while using the balance. Regular maintenance and proper handling are essential to ensure accuracy and longevity of the equipment. If problems persist after following these steps, it is recommended to contact a professional technician for further assistance.
- The balance display switch is not open
- Instantaneous signal interference
- Adapter is faulty
- Host panel is damaged | - Power on the device
- Press the “Start†button
- Re-switch the balance or re-plug the power cord
- Replace the adapter
- Replace the host panel | | 2 | Only shows " " (upper line segment) | - Exceeds maximum load
- Internal memory calibration number is destroyed
- Weighing plate is not installed | - Reduce the load immediately
- Recalibrate by following the “Calibration Balance†procedure. Place the standard weight on the pan, wait about 8 seconds until stable, then check the result
- Reinstall the weighing plate | | 3 | Only shows " " (lower line segment) | - Weighing plate is not installed
- Weighing pan is not placed or not lit
- Limit screw is loose | - Reinstall the weighing pan
- Check the sensor | | 4 | Weighing display value is unstable (data jitter) | - Airflow disturbance
- Unstable worktable
- Short balance time
- High sensitivity at room temperature | - Close the windproof door
- Place the balance on a stable table
- Increase integration time if possible
- Control the room temperature | | 5 | Weighing results are inaccurate | - Not tared before weighing
- Balance not calibrated or calibration weight is incorrect
- Incorrect power supply voltage | - Press the “Tare†button
- Recalibrate the balance
- Use the correct power supply
- Check four-corner error | | 6 | Display shows a certain digit or meaningless symbol | - External interference
- Incorrect power supply voltage | - Restart or re-plug the power
- Ensure correct power supply | | 7 | Stable mark “0†does not disappear | - Balance is too sensitive
- Poor environmental conditions (e.g., air flow, vibration, temperature changes) | - Select a more stable location
- Improve the environment | | 8 | Always shows “--†(wait state) | - Poor environmental conditions
- Balance is too sensitive | - Improve the environment
- Adjust sensitivity to third gear | | 9 | Displays “Err--1†or “Err-2†| - Instantaneous interference
- Balance is faulty | - Restart or re-plug the power
- Send for inspection or replace modules such as 93C46 or 16V8D | | 10 | Shows “CAL†or “Err†| - Objects left on the pan before calibration
- Incorrect calibration weight
- Not tared before calibration
- Pressed calibration button without being in weighing mode | - Remove objects and reset
- Calibrate with accurate weights
- Tare before calibration
- Enter weighing mode first | | 11 | Rightmost unit not displayed | - Balance not calibrated
- Internal calibration data lost | - Calibrate the balance
- Re-calibrate if necessary
- Check for sensor damage | | 12 | Shows “Cou--Err†| - No preset constants during point operation
- Too much or too little weight when presetting | - Perform average point preset
- Calibrate the balance if needed | | 13 | No display at all | - Faulty adapter
- Damaged panel
- Faulty motherboard
- Power board is broken | - Replace the adapter
- Replace the control panel
- Replace the motherboard | | 14 | Weighing weakness | - Faulty photoelectric board | - Replace the photoelectric board | | 15 | Jumping words appear | - Foreign matter in the sensor | - Clean foreign matter from the magnetic system | This guide provides detailed troubleshooting steps for common issues that may occur while using the balance. Regular maintenance and proper handling are essential to ensure accuracy and longevity of the equipment. If problems persist after following these steps, it is recommended to contact a professional technician for further assistance.
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