Toshiba B-SX4T-GS20-QM-R manual Model Type, Download Mode

				Main PC board
	MAIN4-R or greater				MAIN3-R or earlier
Boot	When the boot program is sent to				Downloaded normally.
program	the printer by the downloader, the
earlier than	printer	shows	“MODEL	TYPE
V3.0	ERROR” on the LCD and results in
	an error.
	When the COM is used as the
	interface,	the	downloader	shows
	“Check	Sum	Error”. (Then, the
	printer is forcibly shut down.)
	After the printer is restarted, it starts
	up in the previous status
Main	When the main program is sent to				Downloaded normally.
program	the printer by the downloader, the
earlier than	printer writes the program, shows
V5.0	“FIRM VER. INVALID” on the LCD,
	and results in an error.
	When the COM is used as the
	interface, the downloader shows
	“Erase Error”. (Then, the printer is
	forcibly shut down.)
	After the printer restarted, it starts up
	in the	DOWNLOAD		MODE.
	Downloading the main program V5.0
	or greater enables a recovery from
	the erroneous state

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