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 th e Controller PWB.
4. Remove the eleven s crews securing the Controller PWB to the Controller Chassis and pull the Contro l-
ler away from the Chassis, disconnecting the Controller from the MCU PWB (Figure 1) .
5. Remove the four screws sec uring the Top Plate to the Controller PWB and remove the Plate.
6. Remove the four screws s ecuring 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 Controll er 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 a gainst 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 Co ntroller PWB.
7. Reinstall the Right Cover Assembly (RRP 9.8).
8. Reconnect all interface cables to the Controller PWB.