Samsung ML-2851ND/XAZ Service Manual page 22

2.2.2.1 Feeding
It is consists of a basic cassette, an MP tray for supplying different types of media (envelope, label, spe-
cial paper) duplex unit, and parts related to paper transferring.
1) Separation method
Separate it from the friction pad mounted to the center of the cassette.
2) Basic cassette
It takes a center loading method and applies 'friction pad separating method.'
Both the side guide and the rear guide can be adjusted for for various types of papers from A5 to
legal size paper.
It has a paper existence sensing function (Capacity: 250 sheets of general paper), paper arranging
function, various size papers accepting function, SCF paper path function, and displaying function
of paper remaining amount.
In the front side, there is a paper level indicator.
3) Pick-up roller
It has functions such as a paper pickup function, driving control function, paper feeding function,
and removing electronic static function.
4) Registration roller
It has a paper arranging function, paper transferring function, paper detecting function, jam remov-
ing function, and so on.
5) MP tray
It has a paper arranging function, paper transferring function, jam removing function, and so on.
It uses rubbing pad method to feed 1 sheets of general papers and 1 envelops.
6) Duplex unit
It has paper transferring function, paper guide function, jam removing function, paper sensing func-
tion, and main board supporting function.
It is designed for basic attachment, and the duplex feeding takes a side feeding method. Usable
papers are A4, letter, and legal size paper.
For removing a jam occurred in a front part, it is designed to open a cassette and a guide.
It is designed to open a rear cover to remove a jam in a rear part.
7) SCF (Second Cassette Feeder)
It is the same method with the main cassette, and the capacity is 250 sheets.
It has a separate driving mechanism. It is designed for a common use with a main cassette.
Service Manual
Product spec and feature
2-13
Samsung Electronics