Lexmark E450DN - E 450dn B/W Laser Printer Service Manual page 133

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Installation note: Move the printer so the front hangs over the front edge of the work surface. Anchor the left
spring on its rear post and maintain tension on it while snapping the assembly into position on the left side. Use
the spring hook from below the printer to anchor the front of the spring.
Carefully position the unsnapped right side so the right spring can be anchored at the rear. While maintaining
tension on the spring, snap the right side into position. Use the spring hook from below the printer to anchor the
front of the spring.
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Repair information