① Blank Prints / Partial Blank

Confirm you are using thermal paper (if not using the included thermal paper).

🔍 Cause: Low contrast settings or dirty printhead
✅ ​​Fix:
1. Press cover until it clicks — close tightly.
2. Flip paper over — wrong side no print.
3. Test printer: hold button 5 sec → 2 beeps.
4. Still blank? Hold button 15 sec (5 beeps) → reinstall driver.

② Faded/Gray Prints

🔍 Cause: Low contrast settings or dirty printhead
✅ ​​Fix:

■ Adjust Print Settings
✅ ​​Mobile: Settings > Filter > Increase B/W density
✅ Computer: Print Preferences > Set Density or Halftone Threshold to High

■ Gently clean printhead with alcohol swab (dry 2 mins)

■ If the issue remains, you can also install FlashLabel Pro for an optimized experience (Windows / Mac / Phone)
      No driver installation needed. Link to download: https://pro.flashlabel.com/PCDownload/download-EN.html

③ Blank / Skipping Labels

🔍 Cause: Cover not closed, incorrect label settings, or file formatting issues.
✅ ​​Fix:

■ Basic checks
1. Close cover firmly until it clicks.
2. Before printing, hold button 3 sec and hear 1 beep for automatic label identification.
3. In print settings, select Label with Gap.
4. Hold button 5 sec → 2 beeps to print a test page.

■ Check the file preview
1. If test page prints fine, the issue is with your label file.
2. Verify the file fits the full 4×6 size in print preview; crop if needed.
3. Edit labels using FlashLabel Pro (no driver needed):
✅Windows: https://pro.flashlabel.com/PCDownload/download-EN.html
✅Mobile/Mac: Search FlashLabel Pro in app store.

■ Advanced fixes
Factory reset: hold button 15 sec → 5 beeps.
Restart printer and device, then reinstall latest driver/software.

 ④Black Streaks

🔍 Cause: Incorrect dithering mode and please enable pattern dithering
✅ ​​Windows: Print Preferences > Halftone > Pattern
✅ Mac: Page Options > Print Effect > Pattern
✅ ​​Mobile: Toggle ON "Dithering" before printing

✅Common Fix for Most Connection
1. Follow Setup Guide: Watch the video to learn how to install your printer correctly.
2. Uninstall the driver or app completely, then restart both your device and the printer.
3. Reset printer: Hold the button for 15 seconds until you hear five beeps.

④ Computer USB Connection (All Systems)

✅ Troubleshooting Steps ​​
1.Check indicator light: must be blue; red light = cover open or paper loaded incorrectly.
·Restart printer and computer, then remove and re-add the printer.
·Reinstall the corresponding driver:

·Windows: https://drive.google.com/file/d/1bDyAyXnkp8qmlM6m-yb0w96_cTS28rpo/view
·MacBook: https://drive.google.com/drive/u/1/folders/1UlMoWF64f3ItGwVYzWurLyodVz66oRcg
·ChromeBook: https://nulltonex.com/pages/install-driver-on-chromebookchromeos-via-usb-cable
·ARM Windows: https://drive.google.com/drive/u/1/folders/1Y9cKrylaghKS4IY0rDBt6h9m1buIkuI4

Please note: If you encounter driver error 64-bit error or Windows error 1797, your system is ARM. Please install the ARM driver. ARM does not support Bluetooth; connect the printer via USB only. You can check your device specs in Settings → About.

⑤ Computer Bluetooth Connection (Windows & Mac)

■ Windows: Please ignore any "Driver is unavailable" error messages and proceed with printing directly.

✅ Troubleshooting Steps

1. Please ignore any "Driver is unavailable" error messages and print directly.
2. Remove Y813BT from your device list and pair again.
3. Restart your printer and computer, uninstall the old driver, then install the latest one: https://drive.google.com/file/d/1bDyAyXnkp8qmlM6m-yb0w96_cTS28rpo/view
4. Perform a factory reset if the connection still fails.
4. Use the dedicated Bluetooth driver or FlashLabel Pro (no driver needed): https://pro.flashlabel.com/PCDownload/download-EN.html

■ Mac (M-series 2020+)

Only Mac (M-series, 2020 or later) supports Bluetooth; download FlashLabel Pro from the App Store to connect via the app, or restart your Mac and printer before re-pairing if unsuccessful.

■ Phone Connection (iOS / Android)

1. Phone Connection (iOS / Android)Download FlashLabel Pro from the App Store / Google Play.
2. Enable Bluetooth only (do not use Wi-Fi Direct), and grant required permissions.
3. Open the app, tap the printer icon in the top right corner, and connect to Y813BT.

⑥ Wrong Orientation / Size

🔍 Cause: Label exported at the wrong size (e.g., 8.5″×11″ or A4 instead of 4×6), or orientation settings not applied.

✅ ​​Fix​​:
1. Test the printer
·Hold the button for 5 seconds → 2 beeps to print a test page.
·If the test page prints correctly, the issue is with your label file.

2. Check the exported file
·Make sure the label is exported as 4×6 inches (100×150 mm).
·If the platform only allows 8.5″×11″ or A4, manually crop the label before printing.

3. Automatic label identification
·Adjust the paper slot to fit the label width.
·Hold the button for 3 seconds → 1 beep to auto-detect the label size and gap.

4. Manually adjust Windows printer settings
·Go to Settings > Devices > Printers & scanners.
·Select your printer > Manage > Printing preferences.
·Set paper size to 4×6 inches (100×150 mm) and choose the correct orientation.

⑦ How to Crop Incorrectly Exported Label File Size

🔍 Troubleshooting Steps

1. Use FlashLabel Pro for optimized cropping & printing:

✅Mobile / Mac: Search “FlashLabel Pro” in the app store.
✅Windows: Download at https://pro.flashlabel.com/PCDownload/download-EN.html

2. Source files with incorrect export dimensions or that require cropping (PDF):

1)Open the label PDF in Adobe Acrobat Reader DC.
2)Rotate view if needed via View > Rotate View.
3)Go to Edit > Take a Snapshot.
4)Click and drag to select the entire label area.
5)Go to File > Print, confirm preview, then print.

3. How to Add Settings for Printing Round Labels or Other Sizes of Thermal Paper

(1) Microsoft Office Printing: Go to Label Size → More Sizes to customize the width and height.
(2) Browser Printing (Chrome / Edge): If the needed size is unavailable, manually add a custom paper size:
✅Windows: Settings > Bluetooth & devices > Printers & Scanners > Y813BT label > Manage > Printing Preferences > Page Setup > Edit to set width and height.
✅Mac: File > Print > Paper Size > Manage Custom Sizes > New Size to set width and height.
(3) FlashLabel Pro Printing
·Install FlashLabel Pro and tap the printer icon in the top right corner.
·Enable Bluetooth and connect to "Y813BT".
·Import or create a label design.
·For round labels, select "Circle" shape and set the desired diameter before printing.

⑧ Computer Driver Installation Guide

■Windows USB＆Bluetooth Driver: https://drive.google.com/file/d/1bDyAyXnkp8qmlM6m-yb0w96_cTS28rpo/view
ARM Windows (Surface Pro X etc.): https://drive.google.com/drive/u/1/folders/1Y9cKrylaghKS4IY0rDBt6h9m1buIkuI4

■MacBook USB Driver: https://drive.google.com/drive/u/1/folders/1UlMoWF64f3ItGwVYzWurLyodVz66oRcg
Bluetooth: Only available for M‑series Mac (2020+); download FlashLabel Pro from App Store

■Chromebook / Raspberry Pi / LinuxGet drivers at: https://nulltonex.com/pages/y813

⚠️ Important Security Note: If you receive a security warning or error while downloading the driver, please rest assured that our drivers are safe and reliable. False alarms are sometimes caused by system over‑protection. If you are still unable to download the file, please let us know and we will assist you further.

⑨ Red Light - Paper Jam

✅ Troubleshooting Steps

·Reload at least 4 consecutive labels smoothly.
·Press the feed button for 3 seconds to auto-calibrate the paper.
·Make sure the top cover is fully closed until you hear a “click”.
·Restart the printer or perform a factory reset if needed (hold the button for 15s until 5 beeps).

⑨ Blue Light - Beep Noise

✅ Troubleshooting Steps

·Use our original power plug and adapter, as this issue is often caused by unstable voltage.
·Try a different wall outlet.
·Before printing, press the feed button for 3 seconds for automatic label identification and paper feeding.
·Open and reclose the top cover, ensuring it locks firmly with a “click”.
·Restart the printer or reset to factory settings if necessary (hold the button for 15s until 5 beeps).