22.9.5.3.2 TX Mode Default .................................................................................................. 2-742.9.5.4 Dial Options: ........................................................................................................ 2-802.9.5.4.1 Redial Tries .......................................................................................................... 2-832.9.5.4.2 Redial Interval ...................................................................................................... 2-842.9.5.4.3 Dial Prefix ............................................................................................................. 2-852.9.5.5 Incoming Options: ................................................................................................ 2-892.9.5.5.1 CNG COUNT ....................................................................................................... 2-912.9.5.5.2 Distinctive Ring .................................................................................................... 2-922.9.5.6 Report Options: .................................................................................................... 2-962.9.5.7 LAN Options: ........................................................................................................ 2-982.9.5.7.1 IP Address ............................................................................................................ 2-992.9.5.7.2 Subnet Mask ........................................................................................................ 2-1012.9.5.7.3 Default Gateway .................................................................................................. 2-1022.9.6 User Default Setting ............................................................................................. 2-1052.9.7 Technical Default Setting ...................................................................................... 2-1062.9.8 Default Setting of Dial Parameters ....................................................................... 2-1072.9.9 Off-line Tests ........................................................................................................ 2-1082.9.9.1 Self Diagnosis Flow .............................................................................................. 2-1092.9.10 On-line Tests ........................................................................................................ 2-1132.10 Installation of optional units...................................................................... 2-1162.10.1 Optional units ....................................................................................................... 2-1162.10.2 Memory Board Installation Instruction .................................................................. 2-1172.10.3 Network Card Installation Instruction .................................................................... 2-1182.10.4 G4 Board Installation Instruction .......................................................................... 2-119CHAPTER 3 BRIEF TECHNICAL DESCRIPTION3.1 Fundamentals of the Electro-Photographic Process ................................ 3-23.2 Actual Electo-photographic Process ........................................................ 3-43.3 Boards and Units ..................................................................................... 3-53.4 Overall Dimension and Mechanical Structure of OKIFAX 5700/5900 ...... 3-6CHAPTER 4 MECHANICAL DISASSEMBLY AND REASSEMBLY4. General .................................................................................................... 4-14.1 Precautions for Parts Replacement ......................................................... 4-14.2 Tools ........................................................................................................ 4-34.3 How to Disassemble and Reassemble .................................................... 4-34.3.1 Document Table Cover ......................................................................................... 4-64.3.2 Rear Cover and NCU Cover ................................................................................ 4-64.3.3 Main Cover ........................................................................................................... 4-74.3.4 Operation Unit ...................................................................................................... 4-94.3.5 NCU Board ........................................................................................................... 4-104.3.6 MODEM Board ..................................................................................................... 4-104.3.7 Plate Package ...................................................................................................... 4-114.3.8 Scanner Unit (CIS) ............................................................................................... 4-124.3.9 Stacker Frame ..................................................................................................... 4-134.3.10 Printer Unit ........................................................................................................... 4-134.3.11 Fan ....................................................................................................................... 4-144.3.12 Main Board ........................................................................................................... 4-154.3.13 Contact Assembly and High-/Low-voltage Power Supply Boards ........................ 4-154.3.14 Disassembling the Operation Unit ........................................................................ 4-164.3.14.1 Disassembling the Operation Unit ........................................................................ 4-184.3.15 Disassembling the Scanner Unit (L) ..................................................................... 4-194.3.16 Scanner (CIS) ...................................................................................................... 4-204.3.17 PC1/PC2 Sensors ................................................................................................ 4-204.3.18 Speaker ................................................................................................................ 4-214.3.19 Scanner Motor ..................................................................................................... 4-22