Phaser 6121MFP Service Manual 4-13General TroubleshootingTransmission Fault1. Problem with printing quality at receiving Fax, such as corrupt image, lines inimage, or top/bottom cut off.a. If a copy is normal.Cause: Degraded telephone line connection is caused by noise, etc., or a faultin receiving Fax’s printer.Corrective Action: Determine whether the fault is in the telephone orreceiving Fax by trying a copy function at the receiving Fax.NoteIf the telephone line is degraded, white horizontal lines, missing rows,and/or cut-off top/bottom may occur. Branch connections or incomingcall (call waiting) may also cause image corruption.b. If copy function is faulty.Cause: Dirt or fault in scanner.Corrective Action: Clean the document glass or repair the scanner. If theoriginal is being sent from the ADF, try making a copy with the original placedon the platen. If this resolves the problem, the fault is in the ADF.2. Cannot dial.Cause: No connection. Incorrect setup of dial type and/or line type.Corrective Action: Reconnect the telephone line. Reset the dial type and/orline type to correct the settings.Transmission Failure Troubleshooting ProcedureTroubleshooting Procedure TableStep Action and Questions Yes No1 Make a phone call to the fax number.If you don't hear the Faxcommunication sounds, the number isnot a fax number.Is the number correct?Go to step 2. Retry the faxtransmissionwith thecorrectnumber. If theproblempersists, go tostep 2.2 Did the Fax Protocol Report print out? Check thelatest TX result.If an error codeis displayed,refer to theTransmissionErrors list(page 3-26) formoreinformation.Go to step 3.
