6300 Series Maintenance Manual363.3 Control Panel MessagesATTENTION The host has sent the Bell Command. Corrective actiondepends on the reason the Bell Command was sent. Contactyour system operator.Bad Packet This message indicates that a fault has occurred in thecommunications between the I/O processor and the mainprocessor. Cycle power and try again. If the problem returns,remove and replace the Controller Board. If the problemreturns, download new printer firmware.Bad TWICO Int. The Twinax PSIO is damaged or corrupted. Cycle power andtry again. If this does not clear the problem, remove andreplace the Twinax PSIO Assembly.Bad VFU Channel A VFU channel command has been received from the hostrequesting an illegal channel.1. Correct data from host and retransmit.2. Ensure the integrity of the printer ground connection.Bad VFU Count An incorrect number of bytes has been detected in a VFUdownload. Correct data from host and retransmit.Buffer Overflow A buffer overflow has been detected on the currently activehost interface. This is most likely caused by a host failure torespond to a busy signal.1. Ensure correct protocol has been selected.2. Check wiring of I/O cable between host and printer. (Seethe Applications Manual for a detailed explanation.)Chnl Not Found VFU Channel requested by the host computer cannot befound.1. Correct data from host, then retransmit it to the printer.2. Ensure the integrity of the printer ground connection.Ctrl Fault This message indicates that a fatal fault has occurred in thecontrol processor. Replace the Controller Board.Ctrl Link Flt The Control Processor has detected a fault in the MainProcessor to Control Processor link. Replace the ControllerBoard.Data Overrun A data overrun has been detected on the currently active hostinterface. This is most likely caused by an incorrectlyconfigured serial baud rate, data bits, or parity. Check settingon Serial Baud Rate, Data Bits, and Parity parameters throughthe printer control panel.Flash Memory Fault Related to platen faults is the flash memory fault because itmay occur during the platen calibration process if thecalibration table cannot be written to flash memory.Font Dnld Error An error has been detected during a font download. Correctdata and retransmit from host.