Lexmark C 540n, Service Manual

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4-44
Service Manual
5025-2xx, 4xx
•
Rotate the spring clamp so it hooks over the new ITU (E).
Note: Position the spring on the right side of the gear shaft.
•
When you have replaced the ITU, be sure to enter the 16-digit numeric value from the barcode on the new
ITU into the printer.
1.
Enter the Diagnostics Menu:
a.
Turn the printer off.
b.
Press and hold and .
c.
Turn the printer on.
d.
Release the buttons when the installed memory and processor speed displays.
2.
Select PRINTER SETUP from Diag Menu, and press Select ( ).
3.
Select ITU Barcode , and press Select ( ).
4.
To enter the 16-digit numeric value:
Use
to decrease the leftmost digit value or to increase the value. Press Select ( ) to advance
to the next digit. If a digit is already correct, press Select ( ) to accept the number and to continue.
When the last number is entered, press Select ( ), and
Submitting changes…
should appear. If the
entered number is incorrect,
Check Sum Does Not Match
displays. Check and reenter the number.