PT-E850TKW

FAQs & Troubleshooting

What do the indicator lights mean?

The indicators light and blink to indicate the printer's status. The following symbols are used in this FAQ to explain the meaning of the different indicator colors and patterns.

or or	Indicator is lit in the color shown
or or	Indicator is flashing in the color shown
	Indicator can be off, lit or flashing in any color
	Indicator is off

[Indicators and conditions]
Click “Condition” with a hyperlink to see its “Cause” and “Solution”.

Tube, Label, Power indicator

Indicator			Condition
			Condition
			Power is turning off Top cover open
			Idle mode Initializing mode Tape feed and cutting mode
		(1 time in 1 second)	Transferring data
			Now cooling
			System error
	(1 time in 1 second)		USB host power supply excessive voltage error Mass storage error (E800TK, E850TKW only)
	(1 time in 2 seconds)		Label holder error
			Tube holder error
	(2 times in 1.8 seconds)		Adapter error
			In boot mode
			Reset mode (when the mode is starting)
			Reset mode (when the button is pressed 2/4/6 times for E800TK/E850TKW, 2/6 times for E800T)
	(3 times)	(3 times)	Reset mode (when reset is confirmed)
			Printing mode (Tube)
			Mass storage mode (E800TK/E850TKW only)
	(Once)		Mass storage processing mode (E800TK/E850TKW only)
(1 time in 1 second)			Receiving data (Tube)
(1 time in 2 seconds)			In pause mode (Tube) (E800TK/E850TKW only)
		(2 times in 1.8 seconds)	In cutting mode (Tube)
(2 times in 1.8 seconds)		(2 times in 1.8 seconds)	Memory full error (Tube)
			Cutter error (Tube)
(2 times in 1.8 seconds)			No tube error (Tube) Media end error (Tube)
(1 time in 1 second)			Top cover open error when printing (Tube)
			No ribbon cassette error (Tube)
(1 time in 1 second)			Ink ribbon jam error (Tube) No remaining ink ribbon error (Tube) Tube jam error (Tube) Tube feeding problem (Tube)
			Printing mode (Label)
	(1 time in 1 second)		Receiving data (Label)
	(1 time in 2 second)		In pause mode (Label) (E800TK/E850TKW only)
	(2 times in 1.8 seconds)	(2 times in 1.8 seconds)	Memory full error (Label) Communication error (Tube/Label)
			When blinking alternately : Cutter error (Label) When blinking simultaneously : High temperature error (Label)
	(2 times in 1.8 seconds)		Non-compliant tape error (Label)
	(1 time in 1 second)		Wrong media error (Label)
	(2 times in 1.8 seconds)		No cassette error (Label) Media end error (Label)
			Top cover open error when printing (Label)
	(2 times in 1.8 seconds)	(2 times in 1.8 seconds)	High-resolution/high speed printing error (Label)
(2 times in 1.8 seconds)		(2 times in 1.8 seconds)	High-resolution/high speed printing error (Tube)
			Black mark not detected error (Label)

Battery indicator

Indicator		Condition
		Condition
		Rechargeable battery power: full
		Charging
(1 time in 4 seconds)		Rechargeable battery power: half
(1 time in 2 seconds)		Rechargeable battery power: low
		Rechargeable battery error
		Rechargeable battery power: empty
		Adapter connection/disconnection error

Wi-Fi® indicator (E850TKW only)

Indicator		Condition
		Condition
		No available WPS access point was found
		WPS access point connection error
(2 times in 1.8 seconds)		Incorrect security settings
(2 times in 1.8 seconds)		WPS access point search error
		Wi-Fi on, not connected
		Wi-Fi on, connected
		Wi-Fi off

[Causes and Solutions]

Tube, Label, Power indicator

Condition	Cause	Solution
Now cooling	The thermal head is too hot. The printer stops and resumes printing only after the thermal head has cooled down. The head may become too hot if you are printing a large number of labels. When the thermal head becomes too hot, it may produce imaging on the labels in areas not intended to be printed. This condition may occur more often when the printer is used at high altitude (more than 10,000 ft (3,048 m)) due to a lower air density available to cool the printer. High temperature error.	To avoid or delay overheating, make sure the printer has adequate ventilation and is not located in an enclosed space. Do not use the printer continuously or the print head will become too hot. In this case, the printer will stop and resume printing after the motor has cooled down. Wait for approximately 5 minutes.
System error	-	Try turning the printer on and off. If the error occurs again, contact your Brother dealer or Brother customer service for assistance.
USB host power supply excessive voltage error	USB host overcurrent is detected.	Connect compatible AC Adapter. Try turning the printer on and off several times. If the error occurs again, contact your Brother dealer or Brother customer service for assistance.
Label holder error	The holder for label is not working properly.	Remove the tape cassette and reinstall it correctly. Try turning the printer on and off several times. If the error occurs again, contact your Brother dealer or Brother customer service for assistance.
Tube holder error	The holder for tube is not working properly.	Remove the tube and reinstall it correctly. Try turning the printer on and off several times. If the problem remains unsolved, contact your Brother dealer or Brother customer service for assistance.
Adapter error	An incompatible AC adapter is connected.	Connect a correct adapter. (DC IN 24V)
In boot mode	-	To resolve the issue, contact your Brother dealer or Brother customer service for assistance.
Memory full error (Tube)	The size of the data sent from the computer is different from the expected size or the data checksum is incorrect.	Resend the data. If the error occurs again, check the data because there may be a problem in the data.
Cutter error (Tube)	The tape cutter is closed when you try to print or feed tube. This error also appears if the cutter does not operate correctly while cutting.	Try again to print. If the error occurs again, turn the printer on and off. If the problem remains unsolved, contact your Brother dealer or Brother customer service for assistance.
No tube error (Tube) Media end error (Tube)	Appears when printing with no tube is installed.	Insert a tube. (Refer to "How to insert a tube".)
Top cover open error when printing (Tube)	Appears when pushing the Print key with the cover opened.	Close the cover completely.
No ribbon cassette error (Tube)	Appears when printing with no ribbon cassette is installed.	Install the ribbon cassette. (Refer to "How to insert a ribbon cassette".)
Ink ribbon jam error (Tube) No remaining ink ribbon error (Tube) Tube jam error (Tube) Tube feeding problem (Tube)	You have reached the end of the ribbon. The tube is jammed. If the printer cannot feed the tube correctly because the tube is twisted or the tube is caught on something outside of the printer, this error may occur.	Check that there is enough ribbon remaining. Check that the tube is not jammed. When the tube is jammed, the ribbon of the ribbon cassette will be damaged. Because the ribbon may break if you use it in this condition, pull out approximately 3–5 cm of ribbon from the cassette and wind the damaged portion completely onto the spool. You can use the ribbon to print starting from the portion that is not damaged. Check that the tube is not twisted and that the tube can be fed smoothly outside of the printer. If it is twisted or caught on something, remove the tube from the printer and insert it again.
Memory full error (Label) Communication error (Tube/Label)	The size of the data sent from the computer is different from the expected size or the data checksum is incorrect.	Resend the data. If the error occurs again, check the data because there may be a problem in the data.
When blinking alternately : Cutter error (Label) When blinking simultaneously : High temperature error (Label)	The tape cutter is closed when you try to print or feed tube. This error also appears if the cutter does not operate correctly while cutting. The thermal head is too hot.	Try again to print. If the problem remains unsolved after trying several times, contact your Brother dealer or Brother customer service for assistance. Wait 10 minutes and try again to print. If the problem remains unsolved, turn the printer on and off. If the problem remains unsolved, contact your Brother dealer or Brother customer service for assistance.
Non-compliant tape error (Label)	When the user inserts the noncompliant tape.	Install a compatible tape. (Refer to "How to insert a tape cassette".)
Wrong media error (Label)	The tape width specified in the printer driver or P-touch Editor does not match the tape that is installed.	In the printer driver or P-touch Editor, specify the tape width to match the tape that is installed. Insert the correct tape cassette.
No cassette error (Label) Media end error (Label)	Appears when printing with no label cassette installed.	”No cassette error (Label)” → Install the label cassette. “Media end error (Label)” → Because you have reached the end of the tape, replace the tape cassette. (Refer to "How to insert a tape cassette".)
Top cover open error when printing (Label)	Pressed the Print button with cover opened.	Close the cover completely.
High-resolution/high speed printing error (Label)	Cannot print labels in high-resolution mode when non-supported media (fabric tape, heat shrink tube etc.) is installed in the printer.	Print using laminated tape with black ink.
High-resolution/high speed printing error (Tube)	Cannot print tubes in high resolution/ high speed mode	Select standard mode.
Black mark not detected error (Label)	No tape remains.	Check the remaining amount of tape.

Battery indicator

Condition	Cause	Solution
Adapter connection / disconnection error	Adapter is connected / disconnected during printing with battery installed.	Do not connect or disconnect AC adapter while printing. To print again: close the cover or press any key other than the Power button. To cancel the job: press the Power button.

Wi-Fi indicator (E850TKW only)

Condition	Cause	Solution
WPS access point connection error	This printer does not support the authentication method and encryption mode that are specified for the WPS access point.	Confirm and change the settings of the access point, or use another access point.
WPS access point search error	There found 2 access points or more, or no access point was found.	Try again to search.

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