If you're experiencing issues with your Epson F2100 direct-to-garment (DTG) printer where it fails to print from the white nozzles (W1/W2), even though it appears to not be clogged, there could be several underlying reasons. Here’s a detailed approach to diagnosing and resolving the problem, based on a common scenario encountered by a printer owner.

Checking the Printer's Environment

First, ensure the printer's operating environment is within the recommended humidity levels. Printers can be sensitive to environmental changes, which may impact their performance. In this case, the printer was kept in a basement with a consistent 50% humidity, which is within the typical range.

Conducting Routine Cleaning and Maintenance

Running light cleaning cycles and nozzle checks should be part of regular maintenance. If the nozzle check indicates reduced performance (such as only 70% ink flow in white nozzles), try the following steps:

1. Medium Cleaning Cycles: Begin with one or two medium cleaning cycles on the affected nozzles. If the nozzle check shows further decline, additional action is needed.
2. Heavy Cleaning Cycles: If medium cleaning cycles don't resolve the issue, attempt a heavy cleaning on the problematic nozzles. If there's still no improvement, the cause might not be a clog.

Investigating Beyond Clogs

If cleaning cycles don't resolve the issue, there could be a problem other than a clog. Here's what to look into:

1. Inspecting the Dampers: Changing the damper might help, especially if it's damaged or worn out. If the new damper doesn't solve the problem, it's time to investigate further.
2. Checking the Print Head: Soak the print head and waterfall it with cleaning fluid. If the nozzles flow freely, clogs are unlikely the issue.
3. Observing the Pump and Wiper Mechanism: If you can see ink being sucked through the pump and wiping off on the head cleaner, this suggests the cleaning mechanism is functioning, but there may be other issues.

Addressing Potential Hardware Issues

If cleaning cycles and damper replacement don't fix the issue, it's possible that there's a hardware problem. Consider these possibilities:

1. Pump or Tube Blockages: Check for blockages in the pump or tubes leading to the print head. If these are clogged, the ink won't flow correctly.
2. Head Alignment or Calibration: Misalignment can cause ink flow issues. Ensure the print head is properly aligned.
3. Electrical or Firmware Problems: Sometimes, the issue could be related to the printer's electronics or firmware. Check for error codes or warnings in the printer's interface.

Seeking Further Assistance

If these steps don't resolve the issue, consider reaching out to Epson customer support or a qualified technician for further diagnosis and repair. Additionally, you can find helpful troubleshooting tips and videos by following BCH Technologies on YouTube at https://youtube.com/@bchtechnologies. For more tech tips and articles, check out their blog. If you're in the Greensboro, North Carolina area, visit them locally for in-person support.

These steps should provide a comprehensive guide to solving the issue with the Epson F2100 where white nozzles won't print, even though they don't appear clogged. Remember to follow safety guidelines and take necessary precautions when performing maintenance or repairs on your printer.