# Serial labeling devices: common questions

> Eleven symptoms an operator meets on a serial labeling device, and what to check first for each one.

- **Page** - https://iotready.com/docs/hardware/troubleshooting/serial-labeling-faq
- **Book** - [Hardware](https://iotready.com/docs/hardware.md)
- **Section** - Troubleshooting

## Labels are not being generated

- Check if the weight is showing up (last line in the LCD) when PLU code for an item is entered.

- Note that for pieces items, the weight will not show up on the display.

- Make sure the printer is not in an error state and test the feed button on the printer.

## Labels are being printed after some delay

- Make sure the weight is stable, and no external inputs are affecting the weight.

- Ensure the weighing scale is in **raw mode** (check weighing scale configuration).

- Please try updating the printer firmware. Ask <support@iotready.com> for the firmware update guide.

## Weight not showing up on IoT display / no prints when placing packages

- Check the weighing scale cable connection.

## Date not changing on device

- PLU not updated.

- Check **network connectivity**.

## Only one print is triggered (followed by beep sounds for the rest of the prints)

- Switch the printer off and on and try again.

- Test with another working printer.

## Prints many blank labels after one label is printed

- Clean the printer feeder.

## PLU code not found for an article

- Verify if the price list has been updated for your specific warehouse.

- Ensure the price exists for the specific article.

## Blank prints

- Check the printer power supply and ensure it is powered with a **24V power supply**.

## Pieces labels not generated without weight

- Contact the **IoTReady Support team** to enable **"Skip Weight For Pieces"** for your respective warehouse.

- Perform a **PLU update** after confirmation from the support team.

## Display not showing up properly

- Check the printer power supply.

## Green LED doesn't show up after device is booted up

- Check the weighing scale cable connection.

- Ensure Wi-Fi is connected and that internet access is available.