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Epson Stylus COLOR 800 Service Manual: Self-test Function; Hexadecimal Dump Function; Error Conditions; Monochrome Printing Mode

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EPSON Stylus &2/25 800

1.6.8 Self-test Function

Pressing the Load/Eject or Cleaning (Black) button while turning on the printer puts the printer in the
self-test mode. The self-test is used to check the following:
‰Control circuit function
‰Printer mechanism function
‰Print quality
Turn off the printer to exit this mode.
1.6.9 Hexadecimal Dump Function
Pressing the Load/Eject and Cleaning (Color) buttons while turning on the printer activates the
hexadecimal dump mode. Each line has Hexadecimal codes, along with their corresponding letters printed
in the right column. If a received code denotes an unprintable character, such as a control code, "."
(period) is printed in the right column. This function enables users to check whether the data from the host
is properly transferred. Turn off the printer to exit the mode.
1.6.10 Error Conditions
This printer is in an error condition when any error in Table 1-31 is detected.
Error Name
Fatal error
Paper out / paper jam error
Ink end error
Maintenance error
1.6.11 Monochrome Printing Mode
This printer has 3 printing modes:
‰Default mode
‰Color mode
‰Monochrome mode
Each mode is selected according to printer condition, as described below.
Default Mode
‰Color mode is selected automatically when both black and color cartridges are installed
and no ink end error has occurred. When color ink ends, the printer can go into
monochrome print mode. It is, however, switched by turning the printer off and back on
again, or by sending the INIT signal.
‰Default mode is selected when the printer is initialized.
Color Mode
‰The printer prints normally, based on whether print data is black or color.
‰Can be selected through the printer driver.
Monochrome Mode
‰The printer prints all data in black only. Color data selection (ESC r) is ignored in this
mode. After the printer goes into monochrome print mode, you can return it to color mode
by turning the printer off and back on or sending an INIT signal after replacing the color
cartridge. This mode is also selected through the printer driver. In this case, it is used,
regardless of the color ink consumption, because this mode is defined by the ESC r
Table 1-30. Error Conditions
Detection Trigger
‰The carriage moves abnormally.
‰The carriage does not move.
‰No paper is loaded.
‰Paper is jamming.
‰An ink cartridge is not installed.
‰Ink end.
‰Waste ink has exceeded the specified amount.
Rev. A


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