Ricoh 4501A Fax Receive Problems

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  • Yumann
    Technician
    • Sep 2016
    • 16
    #1

    Ricoh 4501A Fax Receive Problems

    Dear All,

    I have been a lurker on here for a while and have been using the very informative information. I would like to thank all in advance.


    As above I seem to be having problems receiving faxes. I have turned of the ECM and it made a bit of a difference.

    Can someone provide me with a service manual for the above printer for the relevant bits to adjust.

    I want to slow it down to RX speed to 14400 but do not now the bits to adjust.

    Is there any other settings that I can make to ensure better receptions. eg

    Initial TX modem rate - set to 14.4
    Initial RX modem rate - set to 14.4
    PABX equalizer - set to high (both tx and rx)
    PSTN cable equalizer - set to high (both tx and rx)
    Reconstruction time - set to 12s

    Can you the bit to adjust


    Thanks
    Tags: None
    • TonerMunkeh
      Professional Moron

      2,500+ Posts
      • Apr 2008
      • 3865
      #2
      Re: Ricoh 4501A Fax Receive Problems

      Apparently the MPC4501 has an auto speed step-down system to make sure the transmission has the best possible chance of sending. There are no speed settings in the UP's that I can find. Have you connected a normal phone to the line to check for noise? Is the machine using the correct fax lead?
      It's 106 miles to Chicago. We've got a full tank of gas, half a pack of cigarettes, it's dark and we're wearing sunglasses.

      Hit it.

        Comment

        • Yumann
          Technician
          • Sep 2016
          • 16
          #3
          Re: Ricoh 4501A Fax Receive Problems

          Originally posted by TonerMunkeh
          Apparently the MPC4501 has an auto speed step-down system to make sure the transmission has the best possible chance of sending. There are no speed settings in the UP's that I can find. Have you connected a normal phone to the line to check for noise? Is the machine using the correct fax lead?
          Correct fax lead? I just found one that fitted is there a specific one.

          I'll will check for noise on line. I take it that's a telecom provider issue.

          Thank.

            Comment

            • TonerMunkeh
              Professional Moron

              2,500+ Posts
              • Apr 2008
              • 3865
              #4
              Re: Ricoh 4501A Fax Receive Problems

              Yes, there is definitely a specific one. The part number is 11758X. Yes, any noise on the line will be a telecoms provider issue.
              It's 106 miles to Chicago. We've got a full tank of gas, half a pack of cigarettes, it's dark and we're wearing sunglasses.

              Hit it.

                Comment

                • Yumann
                  Technician
                  • Sep 2016
                  • 16
                  #5
                  Re: Ricoh 4501A Fax Receive Problems

                  Thanks.

                  I have noticed the fax issue comes from one source/online fax provider.

                  I'll give the suggestions above a shot.


                  Thank again.

                    Comment

                    • mikadonovan
                      Senior Tech

                      Site Contributor
                      2,500+ Posts
                      • May 2008
                      • 2931
                      #6
                      Re: Ricoh 4501A Fax Receive Problems

                      This may help. This is for a C4501, type c5000 D393 fax option.
                      Attached Files
                      NEVER ASSUME ANYTHING

                        Comment

                        • anothertech
                          Service Manager

                          Site Contributor
                          1,000+ Posts
                          • Nov 2007
                          • 1757
                          #7
                          Re: Ricoh 4501A Fax Receive Problems

                          Originally posted by TonerMunkeh
                          Yes, there is definitely a specific one. The part number is 11758X. Yes, any noise on the line will be a telecoms provider issue.
                          That part number doesn't work in my system. What is this lead your talking about?

                            Comment

                            • Yumann
                              Technician
                              • Sep 2016
                              • 16
                              #8
                              Re: Ricoh 4501A Fax Receive Problems

                              Can someone confirm that the bit setting for the ECM for fax on the MPC3001 same as the MPC4501A.

                              Thanks

                                Comment

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