Operating Instructions3-6 SF150T3-5 LCD Display3-5-1 During communicationIn User Mode, the LCD shows the remotemachine's TTI number, communication type, (sendor receive), and page number.In Service Mode, the display shows thecommunication type, abbreviations for the CCITTGroup 3 T.30 protocol as they occur, the protocoltype (G3), coding type (MH), baud rate in kbps,and line time.3-5-2 If a communication problemoccurs:In User Mode, the display shows one of thefollowing reasons: CAM JAM, COMM. ERROR,CHECK DOCUMENT.In Service Mode, the display shows all errormessages available in User Mode, as well asadditional error messages not available in UserMode.Error messages shown only in Service Mode are:PRE-MESSAGE ERROR:problem occurred during phase B of sessionMESSAGE ERROR:problem occurred during phase C of sessionPOST-MESSAGE ERROR:problem occurred during phase D of sessionLINE ERROR:machine cannot connect or has lost connectionwith the remote machineAdditional messages, not shown above, willappear in the TX/RX journals printed in ServiceMode.