The ADF and
flatbed scanner can be removed as a single unit but, they can be replaced as
separate items. The two together will require two people to lift it off the
printer so separating the two will help lighten the load a bit. The following
procedure will show how to remove the ADF unit and then the flatbed scanner as
two separate units.
1) While
facing the back of the printer there are four screws that hold on the scanner
control board cover. Once removed there is a power connector, the retainer that
holds it in place and one ground screw that will need to be removed.


2) Now
the ADF assembly can be removed from the flatbed scanner. Raise the unit up
like you were going to make a copy and lift it straight up and off the printer.
Make sure the cables do not get caught up on the base unit when lifting it off.

3) Remove
the two screws that hold the face down output bin in place. Then remove the
duplex switchback tray by pressing the release tab and sliding it towards the
left. The duplex switchback tray holds the paper after the first side is
printed and then the paper is drawn back into the printer to complete the
duplex process.

4) The
front lower cover can now be removed by loosening one screw and releasing the
small tab that locks the cover in place.

5)
The inner cover can now be removed. This cover has four
small tabs located on the top of it. When putting it back in make sure all four
tabs are correctly seated.

6)
Open the right side door and remove the two screws to
release the right upper cover.

7).Lock
the wheels and the scanner. Open the front door and located on the right
side, above the fan vent is a
small cover. In the center of the cover is a small tab, release it upwards and
remove it. Disconnect the cable to the left of the cover.

8).Remove the one screw and one large pin
that are located under the small cover that was just removed.

9). Moving to the left side
of the scanner there are two screws that are captive with the pins. Remove the
two small pins. Remove the ground screw to the right of the pin.

10).Facing the rear of the
scanner, remove the one screw and large pin. Release the two connectors from
the scanner to power supply.

11). Disconnect the scanner
interface cable from the formatter board and release the cables from the rear
cover cable holders.

12). The flatbed scanner
can now be lifted off the printers base. This still might require two people
even with the ADF unit removed to reduce the weight.


13). The replacement
scanner will have a different calibration value than the one that was in the
printer. This will have to be entered into the printer through the control
panel. The flatbed scanner will have to be calibrated as well by going into the
Administration menu, then Troubleshooting and then Calibrate scanner.