How to Fix Epson WorkForce WF-6590 Error Code 0x9A: A Detailed Troubleshooting Guide

Question: 

What does the error code 0x9A mean on my Epson WorkForce WF-6590 printer, and how can I fix it?

Answer:

Understanding the 0x9A Error on the Epson WF-6590

The 0x9A error code on the Epson WorkForce WF-6590 typically indicates a "Carriage Circuit Error", which may involve one or more of the following issues:

1. Blown Fuse or Circuit Damage on the Mainboard

• This is the most common cause. The mainboard contains fine circuit paths and embedded fuses that can blow when the printhead draws more current than expected, often due to a clogged or faulty head.

• A blown fuse disables communication between components, such as the printhead and the motherboard, resulting in the 0x9A error.

2. Faulty or Damaged Flat Flexible Cable (FFC)

• The FFC (Flat Flex Cable) transmits signals between the printhead and the board. If the FFC is creased, burnt, or worn out, it may cause interruptions in data transmission, triggering the 0x9A error.

• Replacing the FFC is usually straightforward and inexpensive. You can find the appropriate replacement here (https://bch-youtube-fan-store.myshopify.com/products/3-pin-0-5-mm-pitch-flat-flex-cable).

3. Defective Printhead

• A malfunctioning printhead, especially one with internal shorts or corrosion, can draw excessive power or send faulty signals, potentially damaging other components.

• In such cases, replacing the printhead is necessary, but you must first ensure that the motherboard and cables are in good condition to avoid damaging the new head.

4. Mainboard Failure

• If both the FFC and the printhead are in working order, the mainboard itself may be permanently damaged and need repair or full replacement.

• Some advanced users may attempt micro-soldering to replace the fuse or IC chip, but this is not recommended unless you have prior experience in electronics repair.

Suggested Fix Sequence

1. Turn off the printer and unplug it.

2. Inspect the FFC cable for damage (burn marks, bends, cuts).

3. Test or replace the FFC cable with a known working one.

4. If the issue persists, test the printhead (if you have access to another printer or a multimeter).

5. If both above steps fail, inspect the mainboard for visible damage. Consider replacing or repairing it.

Optional Tool: Multimeter Testing

If you're technically inclined, use a multimeter to test continuity along the FFC and to check for blown fuses on the mainboard. Many boards have labeled fuses (F1, F2, etc.) that you can identify and test directly.

Final Note on Repair Service

Addressing printer issues can be a complicated affair due to the hands-on nature of the problems. Therefore, we're unable to provide remote troubleshooting, suggestions, or support for printer repairs. We offer an in-person evaluation and repair service via our local diagnostic facility (https://bchtechnologies.com/printer-repair-service). Given the high demand, we operate on a first-come, first-served basis. Therefore, it may take a few weeks before we can arrange for your printer to drop it off. Our services are structured to repair either the whole printer or specific parts, with clear instructions on how to proceed. However, we acknowledge that our rates aren't the most economical. Thus, we recommend that you resort to self-help via online research. You can start by checking out YouTube or visiting our YouTube channel's homepage (https://youtube.com/@bchtechnologies). 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 the most efficient approach. Additionally, YouTube may suggest relevant videos from other channels that can assist you.

Thanks again for your trust in BCH Technologies. We appreciate your support and hope this guidance helps you get your Epson WF-6590 up and running again.