4. TROUBLESHOOTING EO1-330304.2 Error Process4- 24.2 Error ProcessWhen the printer detects the errors shown below, it sends the error state to the PC by the ERROR LED andDATA LED, and stops the operation, waiting for a command from the PC or a restart.The printer will restart the operation after clearing a feed jam, media end, cover open, or print head overheat errorwhich occurs during printing, or after supplying the media when the printer has run out. For all other errors,however, the printer does not restart the operation after clearing the error, it is necessary to resend the command.Regarding the print head broken element error, the printer stops every operation except a status response.1. Command error(1) This error occurs if an error in the command length, the command transmission sequence, the commandformat, or the parameter designation is found during the command analysis.(2) This error occurs if the form No. designated by the data print command has not been registered.2. Feed Jam (Paper Feed Error)(1) This error occurs if the printer fails to detect the gap between labels even after feeding the label for 1.5times as long as the label pitch designated by the label size setting command. (Only when the feed gapsensor/black mark sensor is designated.)(2) This error occurs if the printer fails to detect the black mark for the auto feed function even afterfeeding the media for 180 mm when supplying the media, turning the Stand-by switch ON, or closingthe cover.3. Media EndThis error occurs if the printer detects the label end for 20 mm during label issue or feed. However, if morethan 90% of effective print length has been printed and no more print data remains, the printing terminatesnormally. Also, if a media end is detected in the middle of printing and unprinted data remains, the printer isin the state waiting for issue (wait for media supply).NOTE: Detecting a media end state during media feed results in no error.4. Cover Open error(1) This error occurs if a cover open state is detected while the printer is printing or issuing the media for 5mm.(2) This error occurs if a media issue or feed is attempted while the media cover is opened.5. Print Head Broken Element error(1) This error occurs if a broken element is detected during the automatic missing dot check which isperformed when the Stand-by switch is turned on or the cover is closed.(2) This error occurs if an error occurs in the print head driver.6. Print Head OverheatThis error occurs if the thermistor of the print head detects abnormally high temperature.7. Flash ROM Data Write ErrorThis error occurs if an error occurs when data is written into the flash ROM.8. Flash ROM Data Erasing ErrorThis error occurs if an error occurs when the flash ROM is initialized (data erasing).9. Wait for issue ( Wait for media supply)(1) This error occurs if a print command is received when the media has run out.(2) This error occurs if more than 90% of effective print length has been printed and unprinted data remainsin the media end state. For example, when issuing some cut forms, the media needs to be supplied oneby one. Then, the printer’s wait for issue state is sent to the PC each time a cut form is issued. Printingterminates normally when the last label is issued, as no more data remains.10. Area Full in the Flash ROM(1) This error occurs when the form entry area in the flash ROM becomes full.(2) This error occurs when the data of 4KB or more is sent when the form entry is performed while theform No. “00” is designated.NOTE: When an undefined instruction execution error occurs, the printer will be automatically reset.