Samsung CLP-300 XSG LED Function, Firmware downloads mode function, Black only key input process

Alignment and Adjustmens

- Firmware downloads mode function

Turn on the printer at the same time that the button is pressed.

If all LEDs scroll, release the button and download the firmware ROM file via USB port

Black only key input process

:After the panel task is received the Black only key detection event, it changes printer mode to Black only mode and notifies driver that the printer mode is changed to Black only mode. If printer mode is Black

only mode, driver makes printer image by only mono excepting color and the Black only LED glows.

6.2.2 LED Function

There are six LEDs present. Status led indicate the error/online status of the printer in idle mode. In error mode, the status LED glows by red color and in ready mode, it glows by green color. The other four LEDs indicate the toner status. If the black toner needs to change, the toner-low (black) LED glows and if the color (yellow, magenta, cyan) toners need to change, the toner-low (yellow, magenta, cyan) LED glows. Black only LED indicate the printer mode. If the users press the Black only button, the printer mode changes to Black only mode and Black only LED glows.

6.2.2.1 Functions

LED function is made up of

-Ready/Printing status display

-Error status display

-Toner low status display

-Black only status display

6.2.2.2 Detail Description

LED control order

1) Control LED according to current printer state

:After the panel task is received each event, the LED operation is controlled by current printer status.

2) Write LED value to GOP (General Output Port)

	Service Manual	6-3
Samsung Electronics