Saturday, October 05, 2013

HOW TO DISASSEMBLE MAIN UNIT - CANON LBP1120 - LASER PRINTER - [2]


CROSS SECTION
CLICK ON THE PICTURES TO ZOOM
[1]: Face-down delivery roller.
[2]: Fixing film unit
[3]: EP-22 cartridge
[4]: Primary charging roller
[5]: Laser/scanner unit
[6]: Pick-up roller
[7]: Separation pad
[8]: Feed roller
[9]: Developing cylinder
[10]: Transfer charging roller
[11]: Photosensitive drum
[12]: Pressure roller
[13]: Fixing delivery roller
Remove the rear cover, left/right cover, and upper cover.
To enable the disconnection of the connectors, peel off the Warning label (laser) halfway.
Disconnect the 2 connectors, and remove the 4 screws; then, detach the Laser/scanner unit.
Do not disassemble the Laser/scanner unit; you will not be able to adjust it in the field.
There is no Warning label (laser) used on the Laser/scanner unit offered as a service part. If you are replacing the assembly, remove the
label from the existing assembly, and transfer it to the new assembly. Or, use the newly available Warning label (service part). Be sure also to fully hide the connector openings from view.
Drive Assembly
Remove the rear cover and the left/right cover.
Remove the 2 screws and 2 screws equipped with a washer. Slide out the drive assembly slightly, and disconnect the connectors to remove the drive assembly.


Feed Assembly
Remove the engine controller assembly.
Free the 2 claws, and remove the 2 gears and the screw.
Push the 2 claws, and remove the bushing.
Remove the 2 screws, and disconnect the 2 connectors; then, remove the feed assembly.
Delivery Assembly
Open the cartridge cover.
Remove the boss, and remove the face-down delivery roller bushing; then, slide the face-down delivery roller to the right to detach.
Pull the pressure release lever to the front to release the pressure.
Remove the 2 screws, and slide the delivery assembly to the right to detach.
Fixing Film Unit
Remove the rear cover and the left/right cover.
Remove the delivery assembly.
With the pressure release lever shifted up, push down on the fixing pressure unit (left/right) from above; then, slide it to the rear to detach.
Disconnect the connector.
Disconnect the connector, and free the harness from the harness guide.
Remove the fixing film unit.