HP LaserJet Pro 400 Service Manual - Page 263

An error message displays on the control panel The No fax detected. message displays NOTE: This error does not always refer to a missed fax. If a voice call is made to a fax number by mistake and the caller hangs up, the No fax detected. message displays on the control panel. ● Ask the sender to resend the fax. ● Make sure that the telephone cord from the product is plugged into the wall telephone jack. ● Try a different phone cord. ● Connect the product phone cord into a jack for another phone line. ● Make sure the telephone line and phone wall jack are active by plugging in a telephone and checking for a dial tone. ● Make sure that the telephone cord is plugged into the "line" port on the product. ● Check the phone line by running a fax test from the control panel. ● If the error persists, contact HP. See www.hp.com/go/LJColorMFPM375 or www.hp.com/go/ LJColorMFPM475 or the support flyer that came in the product box. The Communication error. message displays ● Ask the sender to send the fax again or send at a later time when line conditions have improved. ● Unplug the product telephone cord from the wall, connect a telephone, and try making a call. Connect the product phone cord into a jack for another phone line. ● Try a different phone cord. ● Set the Fax Speed option to the Slow (V.29) or Medium (V.17) setting, or disable the Fast (V.34) setting. a. Touch the Setup button. b. Open the Fax Setup menu. c. Open the Advanced Setup menu. d. Open the Fax Speed menu. e. Select the correct setting. ● Turn off the Error Correction feature to prevent automatic error correction. NOTE: Turning off the Error Correction feature can reduce image quality. a. Touch the Setup button. b. Open the Service menu. c. Open the Fax Service menu. ENWW Solve fax problems 237