What to do if my Brother Label Maker won't turn on?
- AAustin ThomasJul 27, 2025
If your Brother Label Maker won't turn on, ensure the batteries are correctly installed. Alternatively, check that the optional AC Adapter is securely connected.

What to do if my Brother Label Maker won't turn on?
If your Brother Label Maker won't turn on, ensure the batteries are correctly installed. Alternatively, check that the optional AC Adapter is securely connected.
Why does my Brother Label Maker print labels with streaks?
If you notice streaks or poor character quality with a horizontal space running through your printed labels on the Brother Label Maker, the print head may be dirty. Refer to the 'Performing Routine Maintenance' section for instructions on cleaning it.
| Print Technology | Thermal transfer |
|---|---|
| Maximum Tape Width | 12 mm |
| Connectivity | Bluetooth |
| Power Source | Rechargeable Li-ion battery |
| Compatible Tapes | Brother TZe tapes |
| Model | P300BT |
| Tape Width | 3.5, 6, 9, 12 mm |
| Mobile Device Compatibility | iOS, Android |
| Cutter | Automatic |
| Print Resolution | 180 dpi |
| Label Width | Up to 12 mm |
| Print Speed | 20 mm/sec |
| Weight | 380 g |
| Dimensions | 115 mm x 61 mm x 115 mm |
Indicates potentially hazardous situations that could result in death or serious injuries.
Indicates potentially hazardous situations that could result in minor or moderate injuries.
Lists trademarks and copyright information for Brother and other companies.
Product and AC adapter conformity with EU directives.
Product conformity with R&TTE Directive 1999/5/EC.
Power consumption data for compliance with Commission Regulation 801/2013.
How to enable/disable Bluetooth and its specifications.
Instructions on how to clean the exterior of the machine using a soft cloth.
How to clean the print head to prevent printing issues, with a warning.
Step-by-step guide to replacing the cutter unit when it becomes blunt.
Provides website and customer service contact for further information and support.
Lists the components expected in the P300BT package.
Instructions for downloading the P-touch Design&Print app for iOS and Android.
Identifies front and rear parts of the P300BT machine.
Explains how to feed tape automatically and cut printed labels using the lever.
Detailed steps for inserting six AAA batteries correctly.
Cautions on mixing batteries and proper disposal/storage of batteries.
Instructions for connecting the optional AC adapter to power the machine.
Steps to open the cover, insert the TZe tape cassette, and close the cover.
How to turn the machine on and off using the Power Button.
Explains the meaning of different LED light patterns for machine status.
Guide to pairing the machine with a smartphone or tablet using Bluetooth.
Solutions for machine not turning on or poor print quality.
Solutions for tape feed issues, cutting difficulties, or tape getting stuck.
Troubleshooting system errors, transmission interruptions, and adapter issues.