Canon imageFORMULA DR-G1130 マニュアル

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Chapter 5   Maintenance
4.
Remove the retard roller, and set a clean retard roller 
or a replacement retard roller. 
CAUTION
The metal sections of the roller can become extremely hot after 
continuous use. Do not directly touch the metal. Wait until the roller 
has thoroughly cooled before replacing it.
5.
Align the roller cutout to the axle on the device, and 
slide the roller securing lever in the direction of the 
arrow. 
6.
Pull the roller lock lever down to lock the retard roller 
in place.
7.
Replace the retard roller cover.
8.
Push the front of the retard roller cover in. Make sure 
to hear a latching sound that it is securely returned to 
its original position.
9.
Smoothly close the upper unit. 
CAUTION
Make sure that the hook is completely latched and the retard 
roller cover is not loose. If the retard roller cover is loose, the 
Document Feed Tray will catch on it causing the scanner to 
malfunction.