Canon iR8500 Service Manual page 44

5.1.1 Removing the Scanning
Lamp/Scanning Lamp
Heater ................................. 5-23
5.1.2 Points to Note When
Replacing the Scanning
Lamp .................................. 5-26
5.1.3 After Replacing the
Scanning Lamp .................. 5-26
5.2 Scanner Drive Assembly .......... 5-27
5.2.1 Removing the Scanner
Motor ................................. 5-27
5.2.2 Scanner Drive Cable .......... 5-28
5.3 PCBs ........................................ 5-35
5.3.1 Removing the Light
Control PCB ...................... 5-35
5.3.2 Removing the Inverter
PCB .................................... 5-36
5.4 Others ....................................... 5-38
5.4.1 Removing the Original
Size Sensor (1/2) ............... 5-38
5.4.2 Removing the Original
Size Sensor ........................ 5-39
5.4.3 Removing the Scanner
Home Position Sensor ....... 5-40
5.4.4 Removing the Copyboard
Glass Sensor ...................... 5-41
5.4.5 Removing the Image
Leading Edge Sensor ......... 5-42
5.4.6 Removing the Standard
White Plate ........................ 5-43
5.4.7 After Replacing
the Standard White Plate ... 5-44
5.5 Removing the CCD PCB ......... 5-45
5.5.1 Removing the CCD PCB ... 5-45
5.5.2 After Replacing the CCD
Unit .................................... 5-47
5.6 Laser Unit ................................ 5-48
5.6.1 Removing the Laser Unit ... 5-48
5.6.2 After Replacing the Laser
Unit .................................... 5-49
5.7 BD Unit .................................... 5-50
5.7.1 Removing the BD Unit ...... 5-50
5.8 Components Around
the Process Unit ....................... 5-51
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5.8.1 Removing the Pre-Transfer
Exposure LED ................... 5-51
5.8.2 Removing the Developing
Cylinder Decelerating
Clutch ................................ 5-52
5.8.3 Removing the Developing
Cylinder Clutch ................. 5-53
5.9 Charging Wires ........................ 5-54
5.9.1 Outline ............................... 5-54
5.9.2 Removing the Wire
Cleaner of the Primary
Charging Assembly ............ 5-54
5.9.3 Stringing the Charging
Wires .................................. 5-55
5.9.4 Strutting the Grid Wire of
the Primary Charging
Assembly ........................... 5-58
5.9.5 Adjusting the Height of
the Charging Wire .............. 5-59
5.10 Process Unit ............................. 5-60
5.10.1 Removing the Process
Unit .................................... 5-60
5.10.2 Mounting the Process
Unit .................................... 5-62
5.11 Manual Feed Tray Assembly ... 5-64
5.11.1 Removing the Manual
Feed Tray Unit ................... 5-64
5.11.2 Removing the Manual
Feed Tray Pickup Sensor ... 5-65
5.11.3 Attaching the Side Guide
Timing Belt in the Manual
Feed Tray Assembly .......... 5-67
5.12 Vertical Path Roller
Assembly ................................. 5-68
5.12.1 Removing the Vertical Path
Roller 1/3/4 ........................ 5-68
5.12.2 Removing the Vertical Path
Roller 2 .............................. 5-69
5.13 Registration Feeding
Assembly ................................. 5-70
5.13.1 Removing the Registration
Clutch ................................ 5-70
5.13.2 Removing the Registration
Brake Clutch ...................... 5-71
CANON iR8500 REV.1 MAR. 2001
CONTENTS
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