Xerox 721 Message Manual page 150

OSS (OPERATING SYSTEM SOFTWARE) MESSAGES
6-74
OS4700 System has no tape drive.
A magnetic tape-related command was entered. Your system is
unable to process it because it is an "online only" system
Action None.
OS4710 The specified tape unit is unavailable.
Check the command and reenter correct tape unit.
Action None.
OS4720 Assign LUN failed.
The attempt to assign a logical unit number as the result of a
SUB DEV command has failed.
Action Check the command and reenter correct tape unit.
OS4800 Power failure - waiting for disk.
The system temporarily lost power due to a power outage or a
disconnect from its electrical source.
Action Wait for further instructions to appear on the printer control
console display.
OS4810 System power-failure recovery in progress.
The system temporarily lost power due to a power outage or a
disconnect from its electrical source. Automatic job recovery is
being attempted.
Action Follow recovery instructions as they appear on the printer control
console display.
OS4820 Power interruption.
A power failure has occurred, or the system was inadvertently
turned off.
Action Reboot the system when power is restored.
OS4900 System disk write protected: reset write protect and enter
'RETURN' when done.
The write protect switch on the system disk drive is on; files on
the system disk cannot be changed or deleted.
Action 1. Turn the write protect switch on the system disk drive to the
OFF position.
2. Press the <ENTER> or <RETURN> key.
XEROX 4635 LASER PRINTING SYSTEM MESSAGE GUIDE