Printronix L5035, Maintenance Manual

Page: 138 / 352

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Chapter 10
Replacement Procedures
Controller Board
Removal
CAUTION
To prevent electrostatic damage to electronic components, always wear
a properly grounded static wrist strap when you handle circuit boards
and integrated circuits (ICs).
1. Make a configuration printout of all saved configurations. (Refer to the
User’s Manual
.)
2. Turn off the printer.
3. Disconnect the printer AC power cable from the power source.
4. Remove the printer left rear cover (page 401).
5. Remove the screws and washers (4 each) from the host interface panel
and remove the panel. (See Figure 1.)
6. Loosen the screws (2) securing the controller board retaining brackets
(2), then remove the screws and brackets (not shown in Figure 1).
7. Grasp the edge of the controller board and pull it slightly out of the card
cage to gain access to the ribbon cables connected to the edge-mounted
connectors on the controller board. (See Figure 1.)
8. Tag the ribbon cables connected to the controller board so that you will be
able to reconnect them to their proper connectors on the new controller
board. (See Figure 1.)
9. Disconnect the ribbon cables from the controller board and slide the
controller board out of the card cage. (See Figure 1.)