3.1.1 Precautions on maintenance ……………………………… 3-1
3.1.2 Check the consumables life ……………………………… 3-2
3.1.3 Consumables (CRU : customer replacement unit) ……… 3-3
3.1.4 Replacing the consumables. ……………………………… 3-4
3.1.5 Maintenance parts (FRU : eld replacement unit) ……… 3-8
3.1.6 Location of maintenance parts …………………………… 3-10
3.1.7 Replacing the maintenance parts ………………………… 3-11
3.1.8 Cleaning the machine ……………………………………… 3-22
3.2 Disassembly and reassembly …………………………………… 3-28
3.2.1 General precautions on disassembly ……………………… 3-28
3.2.2 General disassembly ……………………………………… 3-33
3.2.2.1 Cover …………………………………………………… 3-34
3.2.2.2 DADF Unit ……………………………………………… 3-35
3.2.2.3 OPE ……………………………………………………… 3-37
3.2.2.4 Scan Ass’y ……………………………………………… 3-38
3.2.2.5 Video board …………………………………………… 3-44
3.2.2.6 Engine Board …………………………………………… 3-45
3.2.2.7 SMPS board and FDB board ………………………… 3-46
3.2.2.8 Main Drive Unit ………………………………………… 3-47
3.2.2.9 Deve Drive Unit ………………………………………… 3-49
3.2.2.10 Fuser Drive Unit ……………………………………… 3-49
3.2.2.11 LSU …………………………………………………… 3-50
3.2.2.12 HVPS board …………………………………………… 3-52
3.2.2.13 Side Duplex …………………………………………… 3-54
3.2.2.14 ACR/CTD Sensor …………………………………… 3-57
3.2.2.15 Duplex Sensor ………………………………………… 3-59
3.2.2.16 Exit Sensor …………………………………………… 3-60
3.2.2.17 Feed Sensor ………………………………………… 3-61
3.2.2.18 Regi Sensor …………………………………………… 3-62
3.2.2.19 WTB Full Sensor ……………………………………… 3-63
3.2.2.20 1-bin Finisher ………………………………………… 3-65
Contents