Blank Display; Rasterization Messages; Printer Fails To Respond To The System Controller - Xerox 4050 Operator's Manual

SOLVING PROBLEMS

Blank display

Rasterization messages

Printer fails to respond to the system controller

8-20
To prolong the life of the system controller display, the light is
turned off, and the display becomes blank when it has not been
used for 15 minutes. As soon as any key is pressed, the image
returns exactly as it was prior to turning itself off. There is no
loss of information. Older displays will become blank only if the
time display is turned off. Newer displays will become blank
regardless of the time display status unless the DCU reminder is
on, and are user-adjustable.
If there is no display when you press a key, ensure that the
power switch on the right side of the display is in the On
position. Also check the brightness and contrast control dials
(on the lower right-hand edge of the display); turn them to the
left to make the screen brighter. If the display is turned on, the
dials are all the way to the left, and the display screen is still
blank, place a service call.
When a line is too complex for the system to process normally,
the output processor directs the image generator to produce a
bitmap image instead of aborting the page. This process call
rasterization can take anywhere from 3 to 20 minutes. The
following messages display on the controller:
OS1620 Local density problem has caused a printer cycle down.
OS1625 Local density problem rasterization in progress.
Do not press any keys until the process is complete. Any
commands normally allowed during print mode (for example,
FEED, JOBS, PSTATUS, SELECT, and so forth), and entered while
rasterization is in progress, are delayed until the rasterization
process is finished.
When the process is complete, the following message displays:
OS1627 Local density problem rasterization is complete
The printer cycles up and prints the problem page.
Certain conditions may indicate a loss of communication
between the system controller and the printer after the following
message displays:
PRESS CONTINUE TO RESUME PRINTING
The following conditions indicate a loss of communication:
• The printer does not respond when you press Continue.
• The printer does not respond to directions from the system
controller through the keyboard.
XEROX 4050/4090/4450/4650 LPS OPERATOR GUIDE