Epson EPL-N2750 Reference Manual page 52

MP Tray Size
When Auto is selected, the size of the paper loaded in the MP tray
is detected automatically for most common paper sizes. However,
if you are using an uncommon paper size, Check Paper Size may
appear on the LCD panel. In this case, select your paper size from
this menu.
Note:
You can also make the MP Tray Size setting directly from OneTouch
mode 2. For details, see "Using the OneTouch Modes" on page 3-6.
LC1 Size, LC2 Size, LC3 Size
Displays the paper size loaded in the standard and optional lower
cassettes. You cannot change the paper size from this menu.
MP Type
Lets you set the paper type loaded in the MP tray.
LC1 Type, LC2 Type, LC3 Type
Lets you select the paper type loaded in the standard and optional
lower cassettes.
Functions of the Control Panel
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