HP C4345 User Guide - Page 183

Chapter 14 If this did not solve the issue, try the next solution. Solution 2: Lower the fax resolution Solution: For faster transmission, use Standard resolution. This setting provides the fastest possible transmission with the lowest quality of fax. The default resolution is Fine, which can take longer to send. For more information, see: "Change the fax resolution" on page 23 Cause: The document contained a lot of graphics or had very fine detail. If this did not solve the issue, try the next solution. Solution 3: Check the phone line for noise Solution: You can check the sound quality of the phone line by plugging a phone into the telephone wall jack and listening for static or other noise. If the failure was due to noise on the phone line, contact the sender to have them resend the fax. The quality might be better when you try again. If the problem persists, turn Error Correction Mode (ECM) off and contact your telephone company. For more information, see: "Send a fax in Error Correction Mode" on page 82 Cause: The phone line connection was noisy. Phone lines with poor sound quality (noise) can cause faxing problems. If this did not solve the issue, try the next solution. Solution 4: Check the receiving fax machine for problems Solution: Try calling the fax number from a telephone and listen for fax tones. If you cannot hear fax tones, the receiving fax might not be turned on or connected, or a voice mail service could be interfering with the recipient's phone line. You can also ask the recipient to check the receiving fax machine for any problems. Cause: The receiving fax machine was having problems. Solution 5: Increase the fax speed Solution: Make sure the Fax Speed option is set to Fast (33600) or Medium (14400). For more information, see: "Set the fax speed" on page 18 Cause: The Fax Speed option was set to a slow transmission speed. Troubleshooting 180 Troubleshooting