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4012-0XX
Fax Board, Printer Board, and LCU Board Removal
1. Unplug the machine before beginning any electrical service. The
power key does not remove power from the electronics.
2. Remove the left and right side covers, the front cover and the
rear cover, and disconnect J1, J2, J4, J5 and J6 from the printer
board.
3. Disconnect the scanner motor cable from J3 and scanner data
cable J8 from the fax board.
4. Unsnap the two print engine feet at the right side of the machine.
5. Pivot the print engine up around the left pivots, being sure no
cables are being strained, until the left side of the print engine is
resting on the table.
6. Disconnect the remainder of the cables required to remove the
board.
7. Cut the cable tie around the support posts.
8. Remove the EPROM (see
installation on the new board. Remove the ground screw and
remove the board.
Note: If the printer board is replaced, check the bidirectional align-
ment. If the fax board is replaced, inspect the LCU board for physical
damage. Replace the LCU board if damage is present. The machine
serial number needs to be saved into memory, if the fax board is
replaced. Refer to
Feed Arm Assembly Removal
1. Remove the covers.
2. Remove the ASF.
3. Remove the C-clip from the center of the large gear and remove
the feed arm assembly.
Inside Idler Gears Removal
1. Remove the covers.
2. Remove the ASF.
3. Disconnect the printhead cables from the printer board.
4. Remove the paper guide.
5. Remove the C-clip from the feed arm assembly and remove the
feed arm assembly.
6. Pull the idler gears off the mounting studs.
37
"EPROM Removal" on page
"Setting the Machine Serial Number" on page
36) for
26.
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