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Printer/Base (use for all models)
5.17 Main
Logic Board
DM300c/DM400c/DM475 Service Manual (SV61801 Rev. D)
1. Remove back cover (section
2. Remove PSD as described
above in section 5-16.
3. Remove three mounting screws
as shown in figure, right.
4. Remove lower mounting screw
at rear of machine as shown in
Figure 5-59, right.
NOTE: This screw is not used
on DM475, but there is an ex-
tra screw on the bottom of the
board's base plate attached to
the floor of the frame (see Figure
5. Lift board up slightly and care-
fully disconnect all wiring. Open
wire clamps as required. Note
position of connectors.
6. Remove board from machine.
7. Reassemble in reverse order.
Reinstall the PSD removed in
step 2.
NOTE: Make sure wiring is not
subject to crimping or extreme
8. Test machine for proper opera-
NOTE: The Main Logic Board holds all the system software including the
customers custom configuration file from Download Anywhere (DLA). When
installing a new Main Logic Board, it is necessary to re-download the cus-
tomers configuration file to the new board. To do this, contact the Call Cen-
ter and ask them to open the customer's order on DLA. Then connect using
"Check PBP Balance" via the Refill Postage key or by selecting "Check
For Updates" from the Data Center Options menu.
5 • Removal & Replacement
Figure 5-58 Main Logic Board Fasten-
Figure 5-59 Lower Rear Mounting Screw
Figure 5-59B Lower Mounting Screw,
Circled (DM475)


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