Canon MultiPASS C635 User Manual - Page 178

Problem The MultiPASS does not switch automatically between telephone and fax transmissions Cause The MultiPASS may not be in Fax/Tel mode. There may be a document in memory. An error may have occurred during reception. The sheet feeder may be empty. The sending fax may not send the CNG signal that tells the MultiPASS that the incoming signal is a fax. Cannot receive a document manually You may have pressed START/COPY after hanging up the telephone. Print quality is poor You may not be using the correct type of paper. The print head may need to be cleaned. The sending party may be having a problem. Error correction (ECM) may be disabled. Solution For the MultiPASS to switch automatically between telephone and fax reception, the Receive mode must be set to Fax/Tel mode. Make sure you have printed out any documents in memory. Check the LCD for an error message (see page 8-10). Make sure paper is loaded in the sheet feeder. Some fax units cannot send the CNG signal that tells your MultiPASS the incoming signal is from a fax. In such cases, you will have to receive the document manually. Always press START/COPY before hanging up the telephone. Do not press START/COPY after you hang up the telephone; this will disconnect the call. Be sure you are using paper that meets the paper requirements for the MultiPASS (see page A-1). Clean the print head (see page 7-8). Make a copy on your MultiPASS. If the image is OK, then your MultiPASS is operating properly. Contact the other party and have them check their machine. Make sure Error correction (ECM) is set to on in the Advanced Receive fax panel of the MultiPASS Fax Setup Utility (see page 3-9). Troubleshooting Chapter 8 Troubleshooting 8-25