MX-M350/M450 N/U MAINTENANCE AND DETAILS OF EACH SECTION 7 - 75
2) Remove the connector and the screw, and remove the PCU
PWB.
∗ When replacing the PCU PWB, replace the EEPROM on the
PCU PWB which is to be replaced.
a-4. Mother PWB
1) Remove the fusing unit.
2) Remove the paper exit reverse unit.
3) Remove the front cover right.
4) Remove the HDD cover.
5) Remove the MFP controller PWB unit.
6) Remove the cooling duct.
7) Remove the controller duct.
8) Remove the screw and the connector, and remove the main
duct, the sub duct, and the box cooling duct lower.
9) Remove the screw, and remove the controller box upper.
10) Remove the screw, and remove the mother PWB.
13. Fan motor
A. Maintenance and parts replacement
a-1. Controller cooling fan motor 1
a-2. Controller cooling fan motor 2
1) Pull out the left door.
No. Unit Parts
a
1 Controller cooling fan motor 1
2 Controller cooling fan motor 2
3 Ozone exhaust fan motor
a-3
a-2
a-1
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