Xerox Phaser 7500 Service Manual page 970

Reference
Service Diagnostics Tests and Utilities (Continued)
Test
Store Engine NVRAM
11-12
Control Panel Display and Test Definition
Reading engine parameters...
Writing to NVRAM...
Possible errors:
Do restore first
Otherwise...Initialize NVRAM
content?
Press OK to initialize
Erasing diagnostics NVRAM area
Erase confirmed
Cannot erase NVRAM
Saves IOT ATC tag values and serial
number to NVRAM. Run Store
Engine NVRAM before removing
the defective board.
IOT data is saved in NVRAM. If this
data was obtained from the
defective board, turn Off power,
install the replacement board,
reboot into diagnostics, and run
Restore Engine NVRAM.
If it is unknown whether the data
in NVRAM is the data from the
defective board, this message
provides the opportunity to erase
the old ATC tag and serial number
data in NVRAM. Current data is
read from the installed board and
saved to NVRAM.
Attempt to erase NVRAM failed.
Reboot into diagnostics and try
again
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