Lexmark E320 - Printer - B/W Service Manual page 84

4500–E220/E321/E323
NVRAM failure
Indicates a problem in the NVRAM. Replace the operator panel
assembly.
Note: NVRAM is on the operator panel
while secure NVRAM is on the controller PCB. Check margin
alignments after replacing the operator panel assembly. See
"Printhead assembly " on page 4-2
more information. If margin errors are unacceptable,
corrections can only be made through software. Contact the
next level of support or Lexmark at 1–800–539–6275.
2-54
Service Manual
Primary Code
Ready/Data
Toner Low
Load/
Remove Paper
Paper Jam
Error
Press Continue
Tertiary Codes
NVRAM chip failure (952).
RIP firmware cannot communicate with
secure NVRAM (951).
NVRAM data does not match secure NVRAM (950).
Secondary Code
Ready/Data
Toner Low
Load/
Remove Paper
Paper Jam
Error
Press Continue
Ready/Data
Toner Low
Load/
Remove Paper
Paper Jam
Error
Press Continue
NVRAM CRC failure (954).
printed circuit board
(steps 1 through 11) for
(PCB)