Epson AcuLaser C9200N Service Manual page 60

EPSON AcuLaser C9200N
IDC SENSOR SHUTTER MECHANISM
The IDC Sensor can be contaminated with toner since it is located under
the Transfer Belt. There is a shutter mechanism provided for the sensor to
prevent it from being contaminated.
The shutter opens and closes in synchronism with the pressure and
retraction motion of the 2nd Transfer Roller.
The Cam will press the Pressure lever to open the shutter on the IDC
Sensor during retraction.
The Cam will press the Pressure lever to close the shutter on the IDC
Sensor while the roller is pressing.
Shutter Open/Close Operation
1. Drive from the 2nd Image Transfer Pressure/Retraction Motor is transmitted
through a gear train to the drive gear.
2. The drive gear will rotate to turn the Cam half way. Pressing the Pressure
lever down will open the shutter.
3. Turning the motor ON again will turn the Cam half way. Releasing the
Pressure lever will close the shutter.
Shutter
IDC/Registration
Sensor/2 (SE2)
IDC/Registration
Sensor/1 (SE1)
Figure 2-39. Shutter Open/Close Operation
OPERATING PRINCIPLES
2nd Image Transfer Pressure/Retraction Motor (M5)
Shutter
Operating Principle of Main Unit Mechanism
Shutter is closed
Image
transfer
Pressure
Roller
Operation
Lever
Operation
4038T2C169AA
Outside
4038T2C108AA
Revision D
Shutter is open
Retraction
4038T2C170AA
4038T2C107AA
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