f
Setting button
Use this button to switch to the Setup mode.
g
Status button
Use this button to display warnings or the machine status.
h
Reset button
Use this button to reset the selected setting item or mistakenly entered values
to the default value. Also, use this button to delete one character from the
entered data when entering a recipient fax number in Fax mode.
i
On-hook Dialing button
Use this button to switch between on-hook and off-hook.
j
Redial/Pause button
Use this button to redial to the same fax number called previously or to insert a
pause (-) when dialing a number.
k
Address Book button
Use this button to display the information registered in the address list.
l
Power Saving button/LED
(Green)
Use this button to enter the power saving mode. This mode is canceled when
the button is pressed again.
m
Stop button
When the printer is printing, pressing this button stops the printing.
n
Start button
Use this button to start a copy, scan, or fax transmission.
o Numeric key pad Used to enter the number of copies or a zoom value in Copy mode. Also, enters
numeric values, such as the Time Setting in Setup Menu.
p
Clear button
Use this button to clear the number of copies or delete a character when
entering a text or numbers.
q
Data light (Green)
On when print data is stored in the print buffer (the section of printer memory
reserved for receiving data) but not yet printed.
Flashes when the printer is processing data.
Off when no data remains in the print buffer.
r
Error light (Orange)
On or flashes when an error has occurred.
s
OK button
Use these buttons to access the control panel menus, where you can make
printer settings and check the status of consumable products. For instructions
on how to use these buttons, see “Using the Control Panel” on page 137.
t
Right button
u
Up button
v
Down button
w
Left button
x
Return button
Use this button to return to a higher hierarchical level while doing settings.
y
Function buttons (F1 to F4)
Use this button to move to a menu displayed on the LCD panel.
Epson AcuLaser MX21/MX20 Series User's Guide
Getting to Know Your Printer 29
