Tektronix Phaser 740, Руководство по обслуживанию

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20
Phaser 740 and 750 Color Printers
Health LED (Phaser 740 only)
A health LED indicates the status of the image processor board. The health LED is
mounted on the image processor board. Once the PostScript code is loaded into
memory and the image processor is initialized and running, the image processor
blinks the LED at a one-second rate.
■
Blinking (at a steady rate): The printer is operating normally. The LED
blinks irregularly during power-up self-diagnostics.
If a soft error occurs, the image processor board operates, but at a reduced
capacity. Soft failures include failure of expansion memory DIMMs or any
of the interface ports. When a soft error occurs, the printer automatically
prints a startup page listing the error.
■
On or Off: A hard error condition has occurred that would keep the image
processor board from operating.
Media tray type sensing
The combinations of the three tray sensors “tell” the print engine what type of tray is
installed. The tray sensors are located on the left-side interior of the paper tray slot.
Sensor actuators are attached to the bottom end of the tray to close the appropriate
sensor. There are six tray types:
■
Letter (A-size) paper
■ Letter (A-size) transparency film
■
Metric Letter (A4-size) paper
■
Metric Letter (A4-size) transparency film
■
Legal-size paper
■
Auto-duplex unit
Tray switch sensor combinations
Left switch Middle switch Right switch Tray type
Closed Open Open Letter (A-size) paper
Closed Closed Open Letter (A-size) transparency film
Open Open Closed Metric Letter (A4-size) paper
Open Closed Closed Metric Letter (A4-size) transparency
film
Open Closed Open Legal size paper
Closed Open Closed Auto-duplex unit