I have a Tiny Thermal Receipt Printer that halts printing after one line of text or about 1cm of image. When the printer halts, the red status light gives two long flashes before dropping back into it's idle flashing pattern. I can add another print job but it halts like the first, and the print jobs don't clear from "lpstat -o ZJ-58". Periodically the printer will reprint the same failed 1cm of the image (as if the OS has timed-out the job and is attempting to restart it). If I hold the line-feed button when powering it on, it seems to consistently fail just after printing the DES Support line.
I have a second (identical) thermal printer I can plug in using the same connectors and it prints as expected.
The serial number of the (older) functional printer is 2021031000119. The one I just got that won't print is 2021031000140
I suspect the new printer I just got is broken or defective.
Tiny Thermal Receipt Printer Halts Printing
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- corexs
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Re: Tiny Thermal Receipt Printer Halts Printing
Forgot to add: I'm using the USB connected version and the recommended power supply ( https://www.adafruit.com/product/276 )
- adafruit_support_carter
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Re: Tiny Thermal Receipt Printer Halts Printing
Are there any other differences? Even cables? This behavior is most often a power issue. The power supply matters, but also all of the wires and adapters being used to deliver it.I have a second (identical) thermal printer I can plug in using the same connectors and it prints as expected.
Do you have a 9V supply by any chance?
- corexs
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Re: Tiny Thermal Receipt Printer Halts Printing
No differences. Using the same USB cable and same power supply and power connector. I've also tried a second recommended power supply. Unfortunately, I don't have access to 9V
- adafruit_support_carter
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Re: Tiny Thermal Receipt Printer Halts Printing
Please post some photos showing how the power is connected to the printer.
- corexs
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- adafruit_support_carter
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Re: Tiny Thermal Receipt Printer Halts Printing
Thanks. That looks excellent.
Really weird. How are you actually initiating the prints? Is this the self test? If not, do they both at least print the self test OK?
Really weird. How are you actually initiating the prints? Is this the self test? If not, do they both at least print the self test OK?
- adafruit2
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Re: Tiny Thermal Receipt Printer Halts Printing
those big QR codes have a heavy usage of the thermal printer's head. its probably browning out. try making a smaller QR code, if that 'fixes' it then youll need to lighten the print or go to a 9V supply
- corexs
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Re: Tiny Thermal Receipt Printer Halts Printing
Sorry- I didn't get an email notifying me of a reply. I'll try making a smaller QR.
- corexs
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Re: Tiny Thermal Receipt Printer Halts Printing
The top line was initiated with the command:
The QR is a 600x600 png which was moved to "/home/pi/" and printed with the command
This is the result of the power-on test. The printer halts after DES Support (EDIT): The receipt on the right was inside the printer when it arrived
Code: Select all
lp <<< "This is a test print of a multiline text string sent to the thermal printer using lp"
Code: Select all
lp -o fit-to-page ./frame.png
- adafruit_support_carter
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Re: Tiny Thermal Receipt Printer Halts Printing
Just to be sure - the other printer gets through the self test OK? With the same power supply/cables?
- corexs
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Re: Tiny Thermal Receipt Printer Halts Printing
Yes. If I swap just the printer while still using the same power cable and USB cable, I get the following:
- corexs
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Re: Tiny Thermal Receipt Printer Halts Printing
Any further follow-up?
- corexs
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Re: Tiny Thermal Receipt Printer Halts Printing
I'd like to get this issue resolved, but it feels like I've been dropped here.
Is there an RMA process, or...?
Is there an RMA process, or...?
- corexs
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Re: Tiny Thermal Receipt Printer Halts Printing
The contact form on the adafruit shop directs customers here (the forum) to get replacements handled. There's no other direction on handling defective merchandise. Should I be posting in another topic for this? I'm going to be parting with my working printer in about a week, so I kinda need the defective one to start working or be replaced soon.
Forum rules
Talk about Adafruit Raspberry Pi® accessories! Please do not ask for Linux support, this is for Adafruit products only! For Raspberry Pi help please visit: http://www.raspberrypi.org/phpBB3/
Talk about Adafruit Raspberry Pi® accessories! Please do not ask for Linux support, this is for Adafruit products only! For Raspberry Pi help please visit: http://www.raspberrypi.org/phpBB3/