Phaser 6121MFP Service Manual 1-17
General Information
First Copy Output Time
First Copy Output Time (FCOT) is defined as the time when the Start button is 
pressed until the trail edge of the first copied media passes the printer Exit Roller.
The following conditions are applied:
• The Controller does not keep the print engine waiting.
• The printer is at Ready mode (Laser Unit Motor Off, Fuser Ready).
• Paper is A size Short-Edge Feed (SEF).
• Media: Media feed from the standard media tray.
Physical Dimensions and Clearances
Minimum Clearances
Minimum clearances for the Phaser 6121MFP/S.
Mode FCOT (second) Platen FCOT (second) ADF
Color 57.0 sec. 45.0 sec.
Mono 23.0 sec. 19.0 sec.
10 cm
(3.9 in.)
10 cm
(3.9 in.)
27.8 cm
(10.9 in.)
71 cm
(27.9 in.)
67.3 cm
(26.5 in.)
60.5 cm
(23.8 in.)
s6121mfp-178