How to Fix BROTHER Error Code 3X

The Error Code 3X on BROTHER printers indicates: Paper jam in the duplex tray or rear cover.

Step 1: Perform a Hard Reset

Before disassembling any hardware, force the printer to clear its volatile memory.

1. Turn the printer on.
2. Disconnect the power cord from the rear.
3. Wait 60 seconds.
4. Reconnect and power on.

Step 2: Inspect Hardware Components

1. Open the access door.
2. Verify all components are seated securely.
3. Check for any jammed paper or foreign objects in the carriage path.

Step 3: Specific Component Verification

For Error Code 3X, the issue is localized.

• Carefully inspect the electrical contacts and clean them with a lint-free cloth lightly dampened with distilled water.
• If the component has permanently failed, consider a replacement part.