Lexmark E250DN Service Manual - Page 105

Controller card removal, Right side cover removal

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4512-220, -230 Controller card removal Warning: • Always touch a ground before touching the card. • Handle the card carefully by the edges. • Never replace the operator panel and controller card at the same time without a successful POR in between. 1. Remove the right side cover. See"Right side cover removal" on page 4-5. 2. Remove the controller card cover. 3. Disconnect all the cables from the controller card, and remove cables from the shield housing. Warning: Do not replace the controller card and the operator panel at the same time. Each card contains the printer settings. When either of these cards is new, it obtains its settings from the other card. Critical factory settings are lost when both are new and replaced at the same time. 4. Remove the four screws (A) that are securing the controller card. Repair information 4-13

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Repair information
4-13
4512-220, -230
Controller card removal
Warning:
•
Always touch a ground before touching the card.
•
Handle the card carefully by the edges.
•
Never replace the operator panel and controller card at the same time without a successful POR in
between.
1.
Remove the right side cover. See
“Right side cover removal” on page 4-5
.
2.
Remove the controller card cover.
3.
Disconnect all the cables from the controller card, and remove cables from the shield housing.
Warning:
Do not
replace the controller card and the operator panel at the same time. Each card contains the
printer settings. When either of these cards is new, it obtains its settings from the other card. Critical
factory settings are lost when both are new and replaced at the same time.
4.
Remove the four screws (A) that are securing the controller card.