Canon LBP1760P, Service Manual

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displayed. Releasing the key clears the LED and the message.
6) If the Item key is pressed, all the LEDs are lit and the left half of the LCD (8 columns/both
rows) is illuminated. Releasing the key clears the LEDs and the display.
7) If the Value key is pressed, all the LEDs are lit and the right half of the LCD (8 columns/both
rows) is illuminated. Releasing the key clears the LEDs and the display.
8) If the Enter key is pressed, all the LEDs are lit and all the columns of the LCD are illumi-
nated (i.e. all the columns are blacked). Releasing the key clears the LEDs and the display.
9) When all the keys have been tested, "PANEL CHECK DONE" message is displayed and all the
LEDs are kept blinking. This state persists until the printer is turned OFF.
e. Update flash
Turn the power switch ON while pressing the Menu and Item keys simultaneously. This func-
tion supplies the Flash Menu to control and download the firmware.
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CHAPTER 2