Canon iR C6800 Series Service Manual page 14

Contents
9.6 Parts Replacement Procedure ........................................................................................................................... 9 24
9.6.1 Fixing Unit ................................................................................................................................................. 9 24
9.6.2 Fixing Roller .............................................................................................................................................. 9 25
9.6.3 Pressure Roller ........................................................................................................................................... 9 29
9.6.4 External Heat Roller................................................................................................................................... 9 32
9.6.5 Fixing Thermistor (Upper) ......................................................................................................................... 9 36
9.6.6 Fixing Thermistor (Lower)......................................................................................................................... 9 38
9.6.7 External Heat Thermistor ........................................................................................................................... 9 41
9.6.8 Fixing Thermal Switch............................................................................................................................... 9 43
9.6.9 Fixing Locking Thermal Switch ................................................................................................................ 9 45
9.6.10 Thermal Switch ........................................................................................................................................ 9 48
9.6.11 Upper Fixing Heater................................................................................................................................. 9 50
9.6.12 Lower Fixing Roller ................................................................................................................................. 9 52
9.6.13 Fixing Locking Heater ............................................................................................................................. 9 54
9.6.14 Fixing Web ............................................................................................................................................... 9 57
9.6.15 Fixing Motor ............................................................................................................................................ 9 60
9.6.16 External Heater Shift Motor ..................................................................................................................... 9 61
9.6.17 Upper Separation Claw ............................................................................................................................ 9 62
9.6.18 Lower Separation Claw ............................................................................................................................ 9 62
Chapter 10 Externals and Controls
10.1 Control Panel .................................................................................................................................................. 10 1
10.1.1 Overview.................................................................................................................................................. 10 1
10.1.2 LCD Processing ....................................................................................................................................... 10 2
10.1.3 LCD Contrast Adjustment ....................................................................................................................... 10 2
10.1.4 Control Panel CPU .................................................................................................................................. 10 2
10.2 Counters .......................................................................................................................................................... 10 3
10.2.1 Overview.................................................................................................................................................. 10 3
10.2.2 Increasing the Count ................................................................................................................................ 10 6
10.3 Fans................................................................................................................................................................. 10 7
10.3.1 Overview.................................................................................................................................................. 10 7
10.3.2 Sequence of Operations ........................................................................................................................... 10 9
10.4 Power Supply................................................................................................................................................ 10 10
10.4.1 Power Supply ......................................................................................................................................... 10 10
10.4.2 Rated Output of DC Power Supply PCB ............................................................................................... 10 14
10.4.3 Protection Function ................................................................................................................................ 10 15
10.4.4 Backup Battery ....................................................................................................................................... 10 17
10.5 Parts Replacement Procedure ....................................................................................................................... 10 18
10.5.1 Hopper Drive Unit.................................................................................................................................. 10 18
10.5.2 Power Cord Base .................................................................................................................................... 10 21
10.5.3 Control Panel.......................................................................................................................................... 10 23
10.5.4 DC Controller PCB ................................................................................................................................ 10 25
10.5.5 Printer Power Supply PCB ..................................................................................................................... 10 26
10.5.6 Leakage Breaker..................................................................................................................................... 10 27
10.5.7 Fixing Relay ........................................................................................................................................... 10 29
10.5.8 Relay PCB .............................................................................................................................................. 10 29
10.5.9 DC Relay ................................................................................................................................................ 10 30
10.5.10 HV1 PCB.............................................................................................................................................. 10 30
10.5.11 HV2 PCB.............................................................................................................................................. 10 33
10.5.12 HV3 PCB.............................................................................................................................................. 10 34
10.5.13 Fixing/Feed Driver PCB....................................................................................................................... 10 36
10.5.14 Pickup Driver PCB............................................................................................................................... 10 37
10.5.15 Switch PCB .......................................................................................................................................... 10 38