Minolta magicolor 330 Service Manual page 395

RRP 9.123 MCU PWB (PL13.2.1)
Removal
1. Read all of the Life Counter values stored on the MCU PWB (see Section 9) and write them down.
2. Remove the Controller Chassis Assembly (RRP 9.127).
3. Disconnect the two screws securing the Ground Wires to the PWB and remove the Wires.
4. Remove the two other screws securing the MCU PWB to the printer frame and remove the MCU PWB.
Wear an electrostatic wrist strap and use caution when working with the MCU PWB. Static
electricity can damage the sensitive electronics of the MCU PWB.
Handle the MCU PWB by the edges of the board. Never touch any of the ICs that are
mounted on the PWB.
Replacement
1. Position the MCU PWB so the text printed on the PWB is right side up.
2. Reinstall the MCU PWB onto the printer frame.
3. Reinstall the Ground Wire onto the bottom right screw hole in the MCU PWB and use one screw to
secure the Wire.
4. Reinstall the Ground Wire onto the top left screw hole in the MCU PWB and use one screw to secure
the Wire.
5. Use two screws to finish secure the MCU PWB to the printer frame.
6. Reconnect the nine P/Js to the MCU PWB.
7. Reinstall the Controller Chassis Assembly (RRP 9.127).
8. Write all of the old Life Counter values onto the new MCU PWB (see Section 9).
magicolor 330 - Base Engine Service Manual
Removal and Replacement Procedures
9-251