Resolving Error Code 71H on Procolored DTF Printers: A Detailed Guide by BCH Technologies


Hi, I have a Procolored DTF printer that shows solid red lights on the paper feed and ink clean buttons. I used the Epson resetter, and it shows error code 71H five times in a row. What should I do?


Thank you for contacting us. We at BCH Technologies are grateful for your engagement and support, particularly with regard to our YouTube channel ( Your feedback plays a crucial role in further developing our technical expertise.

Error code 71H is commonly associated with the Automated Platen Gap (APG) assembly, which includes the APG motor and two APG sensors. This unit controls the platen height and is crucial for proper printer function. The APG assembly typically resides on the left side of the printer.

The error can be attributed to several factors:

  1. APG Home Position Seeking Errors: These occur when the APG unit fails to correctly find its home position. This can be due to misalignment or sensor issues.
  2. APG Sensor Failures: If the sensors responsible for detecting the position of the APG are faulty, the printer cannot properly adjust the platen height.
  3. APG Motor Malfunctions: A malfunctioning motor can prevent the APG unit from moving correctly.

It's not uncommon for users to accidentally connect the wrong cables to the APG or install the APG unit in the incorrect slot. These minor oversights can significantly impact the printer's functionality. Additionally, sometimes the APG sensor gets knocked out of position while removing paper jams.

Some printers are equipped with a breakout board that can override the APG information. Therefore, checking the Flexible Flat Cable (FFC) connections and ensuring the quality of the breakout board is also advised.

For a visual guide on resolving this issue, you can refer to our YouTube video (

Addressing printer issues can be a complicated affair due to the hands-on nature of the problems. So, we're not able to provide remote troubleshooting, suggestions, or support for printer repairs. We offer an in-person evaluation and repair service via our local diagnostic facility ( Given the high demand, we operate on a first-come, first-served basis. So, it might take a few weeks before we can get your printer to drop it off or mail it to us. Our services are structured to repair either a whole printer or specific parts, with clear instructions on how to proceed if you opt for mail-in or local drop-off services. However, we acknowledge that our rates aren't the most economical. Thus, we highly recommend that you resort to self-help via online research. You can start by checking out YouTube or visiting our YouTube channel's homepage ( Look for specific videos using the search icon next to "About" on the right-hand side of the menu bar. I receive dozens of queries every day asking about videos for specific topics. Having created videos over the past nine years, it's challenging to remember every single one. Therefore, using YouTube's search function would be most efficient. Plus, YouTube might suggest relevant videos from other channels that could assist you.

Thank you once again for reaching out to us. We appreciate your support and engagement.

Jun 17th 2024 Kevin Day

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