Samsung SCX-4500-XAA - Manual (Page 36)

8.7
Note
If the top cover is not completely closed, the machine will not
operate.
Caution
Be careful not to pinch your fingers, since the top cover is very
heavy.
Maintenance Parts
To avoid print quality and paper feed problems resulting from worn parts,
and to maintain your machine in top working condition the following
condition, the following items will need to be replaced after the specified
number of pages, or when the life span of each item has expired.
We highly recommend that this maintenance be performed by an
authorized service provider, dealer or the retailer where you bought the
machine. The warranty does not cover the replacement of the
maintenance parts after their lifespan.
Items Yield (Average)
Transfer roller Approx. 50,000 pages
Fuser unit Approx. 50,000 pages
Paper feed roller Approx. 50,000 pages