Removing the Off Hook PCB(MF728Cdw / 727Cdw / 725Cdn)■ Preparation1. Removing the Right Cover.(Refer to “Removing theRight Cover” on page 120)2. Removing the Left Cover.(Refer to “Removing theLeft Cover” on page 118)3. Removing the Right Front Cover.(Refer to“Removing the Right Front Cover” on page 121)4. Removing the ADF Unit + Reader Unit.(Refer to“Removing the ADF Unit + Reader Unit” on page130)5. Removing the Rear Upper Cover.(Refer to“Removing the Rear Upper Cover” on page 123)6. Removing the Upper Cover.(Refer to “Removing theUpper Cover” on page 125)■ Procedure1. Remove the Off Hook PCB [1].• 2 Connector [2]• 2 Screws [3][1][3][2][2]2x2xRemoving the Main Drive Unit■ Preparation1. Removing the Right Cover.(Refer to “Removing theRight Cover” on page 120)2. Removing the Left Cover.(Refer to “Removing theLeft Cover” on page 118)3. Removing the Right Front Cover.(Refer to“Removing the Right Front Cover” on page 121)4. Removing the ADF Unit + Reader Unit.(Refer to“Removing the ADF Unit + Reader Unit” on page130)5. Removing the Rear Upper Cover.(Refer to“Removing the Rear Upper Cover” on page 123)6. Removing the Upper Cover.(Refer to “Removing theUpper Cover” on page 125)7. Removing the Wireless LAN PCB.(MF728Cdw /727Cdw / 724Cdw only) (Refer to “Removing theWireless LAN PCB (MF728Cdw / 727Cdw / 724Cdw)”on page 157)8. Removing the Main Controller PCB.(Refer to“Removing the Main Controller PCB” on page 157)9. Removing the Main Controller Support Plate.(Referto “Removing the Main Controller Support Plate” onpage 161)10. Removing the Drum Motor.(Refer to “Removing theDrum Motor” on page 196)11. Removing the Developing Motor.(Refer to“Removing the Developing Motor” on page 195)12. Removing the Driver PCB.(Refer to “Removing theDriver PCB” on page 167)13. Removing the FAX PCB.(MF728Cdw / 727Cdw /725Cdn only) (Refer to “Removing the FAX PCB(MF728Cdw / 727Cdw / 725Cdw)” on page 171)14. Removing the Fixing/Fixing Power Supply CoolingFan Unit.(Refer to “Removing the Fixing/FixingPower Supply Cooling Fan Unit” on page 180)15. Removing the Fixing Sub PCB.(Refer to “Removingthe Fixing Sub PCB” on page 166)16. Removing the Fixing Motor Unit.(Refer to“Removing the Fixing Motor Unit” on page 205)17. Removing the Low Voltage Unit.(Refer to “Removingthe Low Voltage Unit” on page 165)18. Removing the DC Controller PCB.(Refer to“Removing the DC Controller PCB” on page 162)19. Removing the Relay PCB.(Refer to “Removing theRelay PCB” on page 168)4. Disassembly/Assembly172
