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magicolor 330 - Base Engine Service Manual 9-263
Removal and Replacement Procedures
RRP 9.129 Controller PWB (PL14.1.10)
Removal
1. Disconnect all interface cables running to the Controller PWB.
2. Remove the Right Cover Assembly (RRP 9.8).
3. Disconnect all P/Js from the Controller PWB.
4. Remove the eleven screws securing the Controller PWB to the Controller Chassis and pull the Control-
ler away from the Chassis, disconnecting the Controller from the MCU PWB (Figure 1).
5. Remove the four screws securing the Top Plate to the Controller PWB and remove the Plate.
6. Remove the four screws securing the End Plate to the Controller PWB and remove the End Plate.
Wear an electrostatic wrist strap and use caution when working with the Controller PWB.
Static electricity can damage the sensitive electronics of the Controller PWB.
Handle the Controller PWB by the edges of the board. Never touch any of the ICs that are
mounted on the PWB.
Replacement
1. Reinstall the End Plate onto the Controller PWB and use four screws to secure the End Plate.
2. Reinstall the Top Plate onto the Controller PWB and use four screws to secure the Top Plate.
3. Position the Controller PWB so the P/J on the back of the Controller lines up with P/J 11 on the MCU
PWB.
4. Press the Controller PWB against the Controller Chassis so the P/J on the back of the Controller con-
nects with P/J 11 on the MCU PWB.
5. Use eleven screws to secure the Controller PWB to the Controller Chassis.
6. Reconnect all P/Js to the Controller PWB.
7. Reinstall the Right Cover Assembly (RRP 9.8).
8. Reconnect all interface cables to the Controller PWB.