Epson Stylus COLOR 1520 Service Manual

Also see for 1520 - Stylus Color Inkjet Printer: Cartridges Replacement User guide User guide User guide Specifications

Contents

EPSON Stylus COLOR 1520Rev. A301.4.7 Printer InitializationThis printer has three initialization types: Power-on initialization, Operator initialization, and Softwareinitialization.âPower-on InitializationThis printer is initialized when turning on the printer. Then the printer recognizes the cold reset command(Remote RS command). When the printer is initialized, following actions are performed:Ñ Initialize the printer mechanism.Ñ Clears input data buffer.Ñ Clears download character set.Ñ Clears print buffer.Ñ Sets default values.âOperator InitializationThis printer is initialized when Pause button is pressed for 3 seconds, or the printer recognizes the /INITsignal (negative pulse) of parallel interface. When the printer is initialized, following actions are performed:Ñ Clears input data buffer.Ñ Clears download character set.Ñ Clears print buffer.Ñ Sets default values.âSoftware InitializationThis initialization is performed by the ESC @ commend and the following actions are performed:Ñ Clears print buffer.Ñ Sets default values.1.4.8 Self-test Printing ModeThis printer has the self-test printing mode. Following items are checked by performing this mode.ÑFunction for the control circuit boardÑFunction for the printer mechanismÑPrint qualityThe printer enters the LQ self-test printing mode by pressing the Load/eject button while turning on theprinter. To enter the draft self-test printing mode by pressing the LF/FF button while turning on the printer.1.4.9 Hexadecimal Dump FunctionPressing the LF/FF and Load/Eject buttons while turning on the printer activates the hexadecimal dumpmode. Each line has Hexadecimal codes, along with their corresponding letters printed in the rightcolumn. If a received code denotes an unprintable character. Such as a control code, “.” (period) is printedin the right column. This function enables users to check whether the data from the host is properlytransferred. Turn off the printer to exit the mode.1.4.10 Monochrome Printing ModeWhen the printer is in the ink end (color) condition, the black ink is substituted to continue to work. In orderto switch to monochrome printing mode, turn the printer off and back on. This mode is also selected bythe command “ESC (K)“. The Color select command “ESC r” is ignored in this mode.