Blank Display (System Controller Terminal); Rasterization Messages; Power Failure - Xerox 4635 Operator's Manual

PROBLEM SOLVING TASKS

Power failure

12-28

Blank display (system controller terminal)

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.
If there is no display when you press a key, check that the
ON/OFF switch on the right side of the display (just below the
screen) is in the ON position. Also check the brightness control
(intensity adjustment lever); slide it to the right to make the
screen brighter. If the display is turned on, the lever is all the
way to the right, and the display screen is still blank, place a
service call.

Rasterization messages

When a line of print 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 can take anywhere from 3 to 20 minutes. The following
messages appear in the Messages window of the PC UI or on the
system controller display:
OS1620 Local density problem has caused a printer cycle down.
OS1625 Local density problem rasterization in progress.
Note: 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 on) entered while
rasterization is in progress are delayed until the rasterization
process is finished. When the process is complete, the following
message appears:
OS1627 Local density problem rasterization is complete
The printer now cycles up and prints the problem page.
If there is a power failure and your LPS is online to a host
computer, the PC UI or system controller display (non-U.S.
markets, only) should prompt you to enter "C". (It is possible
that the message will not appear. Enter "C" anyway at the
system controller keyboard or in the Messages window of the PC
UI.) If there is no response from the system after you enter "C",
press the System Power Off and System Power On buttons on
the operator control panel to reboot the system.
In the event of a power failure, you must initiate recovery of the
data files to recover the data content. The system asks if you
want it to attempt recovery. If you do, key in <Y> (yes), or
select the Yes button.
It is possible that not all data can be recovered; the amount of
recovery that can be accomplished depends on when the last
system checkpoint was taken because of the method used by the
system to restore its dynamic (active) memory.
XEROX 4635 LASER PRINTING SYSTEM OPERATOR GUIDE