Troubleshooting User guide72Framing Error(Serial I/F)The Stop bit is not detected by theserial interface.“?” is printed instead of the receiveddata until the error is canceled.` If STOP/EJECT key is pressed, theerror message is canceled and theprinter is in offline (STOP) state.` Make sure the Baud rate, data bitsand stop bits of the printer match thePC communications port settings.Parity Error(Serial I/F)The setting of Parity of the Host PCdiffers from the Parity setting of theserial interface of the printer.“?” is printed instead of the receiveddata until the error is canceled.` If STOP/EJECT key is pressed, theerror message is canceled and theprinter is in offline (STOP) state.` Make the Parity settings of Host PCand printer compatible.Overrun Error(Serial I/F)The data sent by the serial interfaceexceed the currently prepared OverrunBuffer; the signal sent by the printer tothe Host PC will be ignored.“?” is printed instead of the receiveddata until the error is canceled.` If STOP/EJECT key is pressed, theerror message is canceled and theprinter is in offline (STOP) state.` Check the protocol and/or the hand-shake of the serial connection.Cover OpenErrorOlivetti emulation: the printerreceives printing data, printing start, bitimage or vertical position change com-mand while the cover is open.` When Reset Error Command orGeneral Reset Command (PR2) isreceived, if the cover is closed, theerror message is canceled, and it isin an online state.` If STOP Key is pressed, if the coveris closed, the printer is in an onlinestate, and the error message is can-celed.Cover OpenErrorEpson/IBM emulation: If the cover isopened during the printing process,the print-out will stop and the LCD dis-plays Cover Open. After closing thecover the message is deleted and theprinter will continue the print-out.If paper is inserted in the printer with-out any print data and the cover isopened, the paper is ejected, the LCDdisplays the message Remove Paper.` If the cover is closed, the printer isshifted to online state.` If the cover is opened during othererrors (e.g. Paper Jam Error, PaperLength Error) occur, the LCD mes-sage will not be changed. However,if the cover is closed in that errorstate, those errors will be canceled.Message Condition Corrective action