Xerox 721 Message Manual - page 189
OSS (OPERATING SYSTEM SOFTWARE) MESSAGES
OS9900
System cannot go “ONLINE.”
The ONLINE command was entered, but a fatal error in online
interface prevents it from being processed.
Action
1. Reenter the ONLINE command.
2. If the failure recurs, contact your systems specialist or Xerox
Customer Service.
OS9910
System cannot go “READY.”
A fatal error in the online interface has occurred during power-
up.
Action
1. Repeat the powerup sequence. (Refer to the powering on
and off chapter in your 4635 LPS Operator Guide.)
2. If the failure recurs, contact your systems specialist or Xerox
Customer Service.
OS9920
No system log. Call for service.
The system attempted to update the error log and found none
for the current job while printing.
Action
1. Enter the PROBLEM command to reinitialize the error log.
2. Rerun the job.
3. If the message reappears, contact your systems specialist or
Xerox Service Support Center. (May require reformat and
resysgen.)
OS9950
Memory is too degraded to use. Call for service.
Memory problems are sufficiently severe that there is not enough
memory to run, even in degraded mode.
Action
1. Reboot the system by pressing the Boot button, then
entering B.
2. If the message reappears, contact your systems specialist or
Xerox Service Support Center.
OS9989
Unable to acquire memory for device drivers:
Memory problems are sufficiently severe that there is not enough
memory to load hardware peripheral handler(s).
Action
1. Reboot the system by pressing the Boot button, then
entering B.
2. If the message reappears, contact your systems specialist or
Xerox Service Support Center.
OS9990
Fatal disk error reading device drivers:
A fatal system disk error occurred when executive attempted to
load the indicated hardware peripheral handlers.
Action
1. Reboot the system by pressing the Boot button, then
entering B.
2. If the message reappears, contact your systems specialist or
Xerox Service Support Center.
XEROX 4635 LASER PRINTING SYSTEM MESSAGE GUIDE
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