IV. Preventive Maintenance
4.1 Precautions for Periodic Maintenance Service ................................. 4-1
4.2 Maintenance chart ............................................................................ 4-2
4.3 Cleaning Method............................................................................... 4-4
4.4 Disassembly and Re-assembly ........................................................ 4-7
(1) Multi-feed bypass ........................................................................ 4-8
(2) Paper feed unit.......................................................................... 4-11
(3) Developer unit ........................................................................... 4-14
(4) Fuser unit .................................................................................. 4-19
(5) Optics unit ................................................................................. 4-24
(6) Automatic duplex unit (ADU ) .................................................... 4-32
(7) Main Body ................................................................................. 4-35
V. Troubleshooting
5.1 Service Mode .................................................................................... 5-1
(1) Service mode functions ............................................................... 5-1
(2) Service mode procedure ............................................................. 5-2
(3) F4 mode ...................................................................................... 5-4
(4) F5 mode Copier function programming..................................... 5-16
(5) F6 mode Adjustment and programming.................................... 5-23
(6) F7 mode electronic counter....................................................... 5-29
(7) F8 mode copier operation adjustment ...................................... 5-31
(8) F9 Telephone# input ................................................................. 5-33
5.2 Self-diagnostics/Machine Malfunctions........................................... 5-34
(1) User error .................................................................................. 5-34
(2) Paper Jam ................................................................................. 5-40
(3) Machine error ............................................................................ 5-43
5.3 User Preset Mode ........................................................................... 5-58
VI. Unpacking/Installation
6. 1 Installation Requirements ............................................................... 6-1
6.2 Contents Check ............................................................................... 6-1
6.3 Unpacking ........................................................................................ 6-1
6.4 Installation Procedure ...................................................................... 6-2
6.5 Adjustment ....................................................................................... 6-7
6.6 White Density Adjustment.............................................................. 6-10
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