Printronix L1024, Maintenance Manual

Page: 190 / 372

9–24 Chapter 9 – Controllers and Floppy Disk Drives
NOTE: The Stepper Motor Board Frame cannot be removed unless the Fuser
Base has been removed from the printer. Therefore, remove the Stepper
Motor Board Frame only if absolutely necessary. Follow the steps below
(see Figure 9–8) before removing the Stepper Motor Board Frame
(Step 12).
a. Open the Paper Exit Guide at the rear of the Fuser Base so that it is not in contact with
the Fuser Roller Assembly.
b. Depress the Fuser Assembly Retaining Lever on each side of the printer so that the
Fuser Assembly is free to move.
c. Lift the Fuser Assembly free of the Fuser Base, then remove it from the printer.
d. Disconnect the Fuser Sensor Board by removing the Cable at Connector J1.
e. Remove 2 Screws from the rear of the Fuser Base and remove it from the printer.
12. Remove 2 Screws from the Stepper Motor Board Frame and remove the Frame.
See
Figure 9–7 on page 9–21.
DISASSEMBLY
NOTE: Except for the Ozone Fan, all of the components listed below can be
removed from the printer without first removing the Stepper Motor Board
Frame. The Ozone Fan can be removed from the Frame if the LCD Control
Panel and Bracket are first removed from the printer.
1. Disconnect the Cable from Connector CN7, remove 4 Screws from the Ozone Fan, and
remove the Fan from the Frame.
2. Remove 2 Screws, then remove the Stepper Motors Controller Board from the Frame.
3. Remove 1 Screw, then remove the OPC Drum Spring.
4. Remove 1 Screw, then remove the Cover Open Spring.
9.8.2 Reassembly and Replacement
Reverse all of the Steps listed above.
Table 9–3 lists the connectors on the Stepper Motors Controller Board, together with their respective
functions and destinations. Figure 9–9 shows the locations of the connectors on the board.