Konica Minolta bizhub c650 Service Manual page 155

17. Bypass section
17.3.3 Bypass paper lifting motion control
A. Move to paper feeding position
• When the bypass paper feeding starts, the bypass tray up down motor makes a normal
rotation to move the paper lifting plate up to the paper feeding position. When the paper
lifting plate is moved up, the bypass paper limit sensor turns ON to stops the bypass tray
motor at the feeding position.
• When the paper supply level goes down during paper feeding and the bypass paper limit
sensor turns OFF, the bypass tray motor rotates positively to move it up to the paper
feeding position.
B. Move to standby position
• When there is no print request from the bypass tray and the paper fed from the bypass
tray turns off the exit sensor, the paper lifting plate is lowered.
• Though other jobs are being processed, if the above conditions are met, the paper lifting
plate is lowered.
• When the sensor detects the bypass paper empty at the feeding position, the paper lift-
ing plate is moved to the standby position.
• When paper jam occurs, the paper lifting plate stops at the paper feeding position. After
paper jam is resolved, the paper lifting plate moves to the standby position.
Bypass tray up down motor (M28)
Bypass paper empty detection
Bypass tray up
down motor (M28)
Bypass paper limit sensor (PS35)
Bypass paper lower sensor (PS36)
120
Theory of Operation Ver. 8.0 Jun. 2008
Bypass paper limit sensor (PS35)
Bypass paper lower sensor (PS36)
Start key ON
Paper feeding position
Normal rotation
Inverse rotation
Paper lifting plate
A00JT2C285AA
Occurrence of the event that
moves to standby position
A00JT2E530DA
Standby
position