Front Panel - Tektronix Z740/N - Phaser 740 Color Laser Printer Service Manual

Front panel

These front panel features are found on the printer:
A two-line, 24-character LCD and two LEDs
Four push buttons
LCD The LCD serves two purposes: displaying current image processor and print
engine status information and displaying an interactive menu. Status information
includes image processor status such as Ready, Receiving data and Printing.
Print engine status includes messages such as Out of paper, Paper Jam, and Out
of Toner. The interactive menu can only be entered while the print engine and
image processor are idle. The interactive menu allows the user to review and change
certain NVRAM, I/O ports and peripheral parameters.
Buttons Button 1, the left-most button labeled the Exit key, cancels an operation while
in the interactive menu. The functions of Buttons 2, 3 and 4 are defined by the
particular menu or function being displayed on the LCD display. The bottom row of
the LCD labels the current function of each button.
In addition, pressing the buttons as you turn on the printer enables certain diagnostic
modes:
Pressing and holding Button 1, as you turn on the printer, skips power-up
diagnostics (except for a brief kernel test) and proceeds to PostScript
startup.
Pressing and holding Button 3, as you turn on the printer, executes
interactive service tests. Refer to "Service tests" on page 57.
The topic, "Resetting NVRAM" on page 67 explains how to use the front panel
buttons to reset the printer's NVRAM to its factory default values.
10 Phaser 740 Color Printer