Ensure you are using a 2D-capable model (like the Kercan KR-230-EIO Go to product viewer dialog for this item. ). 1D-only scanners cannot read QR codes. 5. Finding the Original PDF Manual
Scan the hexadecimal character codes corresponding to your desired characters from the manufacturer’s full manual chart. Scan the code. 4. Symbology Management (Enabling/Disabling Barcode Types)
Even with the manual, issues arise. Here is a systematic diagnostic table.
| Symptom | Likely Cause | Solution (from Manual) | | :--- | :--- | :--- | | | Wrong interface mode | Scan “USB HID Keyboard” barcode from manual. | | Laser/light turns on but won’t read | Disabled symbology | Scan “Enable All Barcodes” then factory reset. | | Wireless model pairs but doesn’t send data | Battery saving mode | Charge fully. Scan “Wake Up” barcode. | | Scanner reads barcode twice | Bounce-back trigger | Enable “Trigger Release Timeout.” | | QR codes read as gibberish | Encoding mismatch | Set “QR Code UTF-8” mode in manual. | | Bluetooth keeps disconnecting | Interference or low battery | Move within 10m. Unpair and repair via manual steps. |
: Scan the "Bluetooth-HID Mode" barcode followed by the "Match" barcode. Device Discovery : Enable Bluetooth on your computer or tablet and select "Barcode Scanner HID" Verification kercan barcode scanner manual
If you need help with a specific setting, tell me your (e.g., KR-100, KR-820-2D) so I can find the exact code. What specific issue or adjustment are you trying to fix right now? AI responses may include mistakes. Learn more Share public link
Select the Kercan scanner from the list of available devices (often appearing as "Barcode Scanner HID").
Charge the device for at least 2 hours. Ensure the battery is properly installed if it's a removable model.
The scanner laser stays on constantly, reading any barcode that passes by. Ensure you are using a 2D-capable model (like
| Problem | Likely Cause | Solution (From Manual) | | :--- | :--- | :--- | | | Dead battery / Bad cable | Charge for 2 hours. Try a different USB cable. | | Laser turns on but no beep | Barcode type is disabled | Enable the correct symbology (e.g., Code 128 or PDF417). | | Reads but types wrong letters | Keyboard language mismatch (e.g., PC is AZERTY, scanner sends QWERTY) | Scan the "US Keyboard" barcode, then scan your PC's language (e.g., "French Keyboard" barcode). | | Adds a letter or number before the scan | Prefix is programmed | Perform Factory Reset. | | Adds an extra "enter" or "tab" | Suffix is programmed | Scan "Clear Suffix" barcode in advanced manual. | | Wireless disconnects randomly | Interference / Low battery | Change channel (scan "Auto Hop" barcode). Charge battery. | | Cannot read QR Code | Scanner is 1D only (laser) | Check model. 1D lasers cannot read QR. You need a 2D imager model. |
The scanner is out of range from its USB receiver. Bring it closer to the computer and re-pair the device.
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Adjust or mute the audio feedback provided during successful decodes. budget-friendly tools for inventory management
Kercan barcode scanners are reliable, budget-friendly tools for inventory management, retail POS systems, and logistics. However, losing the printed user manual can make configuration difficult.
You can download the full configuration manual [here] .
A dirty window is the #1 cause of "No Read" errors on older devices.