CANON LBP1120
HOW TO DISASSEMBLE MAIN UNIT - - LASER PRINTER
[1] Rear cover
[2] Right cover
[3] Left cover
[4] Upper cover
[5] Cartridge cover
[6] Pickup tray
Rear Cover
Remove the screw.
Locate the claw under the area indicated by an arrow. Open
the bottom of the left/right side of the rear cover, and slide it to the front;
free the claw, and lift the rear cover to detach.
Right Cover
Remove the rear cover.
Open the cover of the cartridge assembly.
Remove the screw and, free the claw under the area indicated
by an arrow, and free the hook; then, detach the right cover.
Left Cover
Remove the screw
Open the cover of the cartridge assembly.
Remove the screw and, free the law under the area indicated
by an arrow, and free the hook; then, detach the left cover.
Upper Cover
Remove the rear cover and the left/right cover.
Disconnect the connector J203 from the engine controller
PCB; then, free the harness from the guide.
Remove the 2 screws, and free the 2 claws; then, detach the
upper cover.
Cartridge Cover
Remove the rear cover and the left/right cover.
Open the cartridge cover.
Force the front cover down to detach.
While pushing the
claw, detach the cartridge cover from the arm.
Slide the shaft, and detach the cartridge cover.
Pickup Tray
Remove the rear cover.
Slide up the pickup
tray to detach.
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.
