How to Fix Procolored L805 DTF Printer Printhead Slamming Issue

Question:
My Procolored L805 DTF printer's printhead moves halfway to the left, then abruptly slams to the right and stops working. I've watched videos suggesting it might be the encoder strip, but after trying to fix that, the issue persists. Could it possibly be related to the white sensor strip instead? I'm unsure whether I should purchase a new encoder strip or sensor strip. Any advice would be greatly appreciated!

Answer:

Based on your detailed description, the behavior you’re seeing—where the printhead moves halfway to the left, then rapidly slams back to the right—strongly suggests an issue with positioning sensors or feedback mechanisms. Let's explore the key areas to troubleshoot:

1. Encoder Strip (Transparent, Grey Strip with Fine Lines)

• The encoder strip helps the printhead accurately identify its horizontal position. Issues such as dirt, smudges, misalignment, or physical damage can disrupt this function.

• Carefully check the strip to confirm it's clean, undamaged, properly threaded through the sensor on the carriage, and correctly aligned. Cleaning gently with isopropyl alcohol often resolves minor issues.

2. Encoder Sensor (Sensor Reader)

• The sensor on the printhead carriage optically reads the encoder strip. If this sensor is obstructed or faulty, it may misread positioning information, causing erratic movements like slamming.

• Ensure there's no debris inside the sensor area. If the sensor appears clean yet the problem persists, it might need replacement.

3. Clarifying "White Sensor Strip" vs. Encoder Strip

• The term "white sensor strip" is occasionally used interchangeably with the encoder strip, but technically refers to the transparent, lined strip used by the printer carriage for positioning.

• Specifically, on Procolored L805 printers, the crucial component is the transparent encoder strip.

Recommended Actions:

• First Step: Replace the encoder strip if you observe damage, bends, smudges, or scratches. This is usually the quickest and most effective fix.

• Second Step (if necessary): If the problem persists after installing a new encoder strip, consider replacing the encoder sensor itself.

Handling printer repairs can often be complicated and require hands-on assessment. As such, we don't provide remote troubleshooting or repairs. However, BCH Technologies does offer professional, in-person diagnostic and repair services. You can find more information on our Printer Repair Service page. Please note, due to high demand, services are provided on a first-come, first-served basis, which might involve waiting times. While our repair rates might not always be the lowest, we encourage you to explore self-help resources available online. Our YouTube channel homepage provides extensive tutorials that could help. You can search directly for your printer model or specific issue by using the search function next to the "About" section on our channel. YouTube will also recommend related helpful content from other creators.

Thank you again for your patience and for reaching out. We appreciate your trust and support!