Canon ImageRunner iR8500 Series Service Manual page 210

Contents
4.7.2.7 Removing the Main Controller PCB ............................................................................................................................................................ 4-28
4.7.2.8 When Replacing the Main Controller PCB .................................................................................................................................................. 4-29
4.7.3 Boot ROM.................................................................................................................................................................................. 4-29
4.7.3.1 Removing the Rear Cover............................................................................................................................................................................. 4-29
4.7.3.2 Removing the Rear Cover............................................................................................................................................................................. 4-29
4.7.3.3 Removing the Rear Cover............................................................................................................................................................................. 4-30
4.7.3.4 Removing the Main Controller Box Cover................................................................................................................................................... 4-30
4.7.3.5 Removing the Boot ROM ............................................................................................................................................................................. 4-30
4.7.4 Differential PCB ........................................................................................................................................................................ 4-30
4.7.4.1 Removing the Rear Cover............................................................................................................................................................................. 4-30
4.7.4.2 Removing the Rear Cover............................................................................................................................................................................. 4-31
4.7.4.3 Removing the Main Controller Box Cover................................................................................................................................................... 4-31
4.7.4.4 Removing the Differential PCB/Differential PCB Relay Board .................................................................................................................. 4-31
4.7.5 HDD........................................................................................................................................................................................... 4-31
4.7.5.1 Points to Note on Handling the Hard Disk ................................................................................................................................................... 4-31
4.7.5.2 Removing the Rear Cover............................................................................................................................................................................. 4-32
4.7.5.3 Removing the Rear Cover............................................................................................................................................................................. 4-32
4.7.5.4 Removing the Rear Cover............................................................................................................................................................................. 4-32
4.7.5.5 Removing the Main Controller Box Cover................................................................................................................................................... 4-32
4.7.5.6 Removing the Differential PCB/Differential PCB Relay Board .................................................................................................................. 4-32
4.7.5.7 Removing the Hard Disk .............................................................................................................................................................................. 4-33
4.7.5.8 Points to Note on Attaching the Hard Disk .................................................................................................................................................. 4-33
4.7.5.9 When Replacing the HDD ............................................................................................................................................................................ 4-33
4.7.6 Controller Fan ............................................................................................................................................................................ 4-33
4.7.6.1 Removing the Rear Cover............................................................................................................................................................................. 4-33
4.7.6.2 Removing the Rear Cover............................................................................................................................................................................. 4-34
4.7.6.3 Removing the Rear Cover............................................................................................................................................................................. 4-34
4.7.6.4 Removing the System Connector Cover....................................................................................................................................................... 4-34
4.7.6.5 Removing the Main Controller Box Cover................................................................................................................................................... 4-34
4.7.6.6 Removing the Controller Fan ....................................................................................................................................................................... 4-34