Samsung ProXpress M337x Service Manual page 30

2. Product Specifications
4) MP Tray
The multi-purpose tray can hold special sizes and types of print material, such as postcards, note cards, and envelopes.
It is useful for single page printing on letterhead or colored paper. It uses 3 rollers feeding method to feed 50 sheets
of general papers.
5) Duplex Unit
It has paper transferring function, paper guide function, jam removing 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.
If a face up tray is open, the duplex option cannot be used.
6) SCF (Second Cassette Feeder)
It is the same method with the main cassette, and the capacity is 520 sheets. It has a separate driving mechanism. It is
designed for a common use with a main cassette.
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