Xerox Phaser 6120 Service Manual page 249

Pressure Sequence
1.
When the Pressure/Retraction Solenoid /Cleaning Blade (SL3) is energized in the
condition, in which the Cleaning Blade is retracted from the Transfer Belt, the pressure
cam rotates a half turn. This pushes the lever backward.
2.
When the lever is pushed backward, the Cleaning Blade is returned. Then, the Cleaning
Blade is pressed against the Transfer Belt.
Home Position Detection
The position of the Cleaning Blade is unknown when the Power Switch is turned ON or
the cover is opened and closed, the machine performs a home position detection sequence
during a warm-up cycle.
During the warm-up cycle, the Pressure/Retraction Solenoid /Cleaning Blade (SL3) is
energized to start a pressure/retraction sequence. When the Retraction Position Sensor /
Cleaning Blade (PC6) is blocked, the Pressure/Retraction Solenoid /Cleaning Blade (SL3)
is de-energized.
1st Transfer Roller Voltage ON/OFF Control
Image write start position for
a paper size greater than A4
Belt Positioning Sensor (PC4)
/TOD (Image Write Start signal)
Rack Motor (M2)
1st Transfer output
Phaser® 6120 Color Laser Printer Service Manual
Print Engine Theory of Operation
Pressure Cam
Lever
4139to2078e0
Image write start position for
a paper size of A4 or smaller
4139to2103e0
7-29