
77259L Rev. 4 12/16/03 Z4M/Z6M Maintenance Manual Page 4-33
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5. Refer to Removing Main Logic Board on page 4-30 and remove the main logic
board.
6. Place the printer on its side, media door side down.
7. Refer to Figure 4-28. Disconnect all connectors from the power supply board.
8. Refer to Figure 4-27. Remove the three screws and nut plate securing the main AC
power connection to the main frame.
9. Remove the two screws that secure the main logic board mounting bracket and
remove the mounting bracket.
10. Refer to remove ribbon take-up assembly on page 4-49 and remove the ribbon take-
up spindle drive gear.
11. Refer to Figure 4-27. Remove the three screws that secure the power supply
heatsink clamp to the printer. Remove the clamp, clamp pad, and insulator.
Figure 4-27. Removal and Replacement of the Power Supply Board
Note • Place a soft cloth on your work surface.
Note • Make note of the orientation and location of all the connectors.
Main Logic Board
Main Logic Board
Mounting Screws (2)
Parallel Port
Mounting Screws
and Washers (2)
Serial Port
Mounting Screws
and Washers (2)
Power Supply
Heatsink Clamp
Mounting Screws (3)
Power Supply
Heatsink Clamp
Power Supply Board
Insulator Pad
Power Supply Board
Mounting Screws (3)
Locating Pins
Nut Plate
Nut Plate
Mounting Screws (3)
Main Logic Board
Mounting Bracket
Main Logic Board
Mounting Bracket
Mounting Screws
Caution • Verify that all cables and wires are clear before removing the power supply.
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