Epson WorkForce Pro WF-C8690 A3 Color MFP with PCL/PostScript - Manual (Page 420)

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Sent Fax Quality is Poor
If the sent fax quality is poor, try these solutions:
• Clean the scanner glass.
• Clean the ADF.
• Try changing the resolution or density setting on the control panel.
• Try changing the original type setting on the control panel.
• If you are sending a monochrome fax to a single recipient, try sending the fax using the Direct Send
feature.
Note: If you send a high-resolution monochrome fax without using the Direct Send feature, the
product may automatically lower the resolution.
• Try enabling the error correction mode (ECM) setting.
Parent topic: Solving Faxing Problems
Sent Fax is Received in an Incorrect Size
If your recipient receives a fax in an incorrect size, try these solutions:
• If you are trying to fax an A3-size document, make sure the recipient's fax machine supports the paper
size. If the message OK (Reduced Size) appears in the fax transmission report, the recipient's fax
machine does not support A3-size documents.
• If you are sending a fax using the scanner glass, make sure your original is placed correctly and that
the correct paper size is selected on the control panel.
• Clean the scanner glass and document cover.
Parent topic: Solving Faxing Problems
Related tasks
Cleaning Your Product
Placing Originals on the Scanner Glass
Received Fax Quality is Poor
If you receive a poor quality fax, try these solutions:
• Try enabling the error correction mode (ECM) setting.
• Contact the fax sender and ask them to send the fax in a higher resolution.