Theory of Operation 2-39
Tray 1 (MPT)
■ Feed Roller 
When the Tray 1 (MPT) Feed Solenoid energizes, the Gear MPT and the Idler 
Gear are engaged by the force of the solenoid spring. The Feed Roller rotates 
from the drive of the Main Drive Assembly and feeds paper from Tray 1. After 
rotating one turn, the Gear MPT and the Idler Gear are disengaged, the Main 
Drive Assembly and Feed Roller stop, allowing only one sheet of paper to be fed 
through at a time.
■ Tray 1 (MPT) No Paper Sensor 
Detects whether print media is present.
■ Tray 1 (MPT) Feed Solenoid 
Controls the operation (rotation/stop) of the Tray 1 (MPT) Feed Roller.
■ Size Guides 
Indicates the paper width, maximum capacity, and holds the paper in proper 
alignment for feeding.
No Paper Sensor
Feed Solenoid
Gear MPT
s6300-350
Tray 1 (MPT) 
Feed Roller