Canon imageCLASS MF4270 Basic Operation Manual page 41

J [Image Quality] key
Press to select image quality for copy or fax.
K [Collate/2 on 1] key
Press to collate copies, or press to set 2 on 1
copying.
L [Energy Saver] key
Press to set or cancel the Sleep mode manually.
The key lights green when the Sleep mode is
set, and goes off when the mode is canceled.
M [Stop/Reset] key
Press to stop a current job. Also, press to return
the machine to the standby mode.
N Error indicator
Flashes when an error has occurred.
1-6
O Processing/Data indicator
Flashes while sending or receiving faxes. Lights
when the machine has waiting jobs and stores
the data in memory.
Any fax documents that have been received
and are stored in the memory will be deleted
if you turn off the main power switch of the
machine when the Processing/Data indicator
is lit.
P [Start] key
Press to start copying, scanning and sending
faxes.
Q Numeric keys
Enter letters and numbers.
R [Tone] key
Press to switch from rotary pulse to tone dialing.