Front Panel - Tektronix Phaser 550 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 controller and print
engine status information and displaying an interactive menu. Status
information includes controller 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 controller are idle. The interactive menu allows the
user to review and change certain NVRAM, I/O ports and peripheral
parameters. Using the front panel to review and change parameters is discussed
in Chapter 9, "Checks and Adjustments."
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 2, as you turn on the printer, executes
extended diagnostics.
Pressing and holding Button 3, as you turn on the printer, executes
interactive service tests. These are described in "Printer
self-diagnostics" on page 9-6.
The Chapter 9 topic, "Resetting NVRAM" on page 9-31 explains how to use the
front panel buttons to reset the printer's NVRAM to its factory default values.
General Information
Service Manual 1-7
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