Oki C711 Maintenance Manual page 5

Oki Data CONFIDENTIAL
5.2 Maintenance Utilities .......................................................................................... 94
5. Maintenance menu functions .............................................................................. 96
5..1 Self-diagnostic mode .................................................................................. 96
5..1.1 Operation panel ................................................................................... 96
5..1.2 Ordinary self-diagnostic mode (level 1) ............................................... 98
5..1. Switch scan test ................................................................................... 99
5..1.4 Motor clutch test ................................................................................ 101
5..1.5 Test print ............................................................................................ 10
5..1.6 Color registration correction test ........................................................ 107
5..1.7 Density correction test ....................................................................... 108
5..1.8 Consumable item counter display ...................................................... 110
5..1.9 Number of print copies counter display ............................................. 111
5..1.10 Switching between the Factory mode and the Shipping mode .......... 111
5..1.11 Self-diagnostic function setting .......................................................... 112
5..1.12 LED head serial number display ....................................................... 11
5..1.1 NVRAM parameter setting ................................................................ 11
5..2 Various prints with the printer as a standalone unit .................................. 11
5.. Functions of keys at power on .................................................................. 114
5.4 Setups upon completion of part replacement ................................................... 115
5.4.1 Precautions when replacing the CU/PU board ......................................... 115
5.5 Density control manual setting ......................................................................... 117
5.6 Printer boot menu list ........................................................................................ 118
6. Periodic Maintenance ......................................................... 120
6.1 Cleaning ........................................................................................................... 121
6.2 How to clean the LED lens array ...................................................................... 122
6. How to clean the pickup roller .......................................................................... 124
6.4 How to clean inside of printer ........................................................................... 125
7. Troubleshooting and repair procedure ............................. 127
7.1 Before starting the repair work ......................................................................... 128
7.2 Confirmation items before taking corrective action against abnormalities ....... 128
7. Precautions when taking corrective action against abnormality ....................... 128
7.4 Preparation for troubleshooting ........................................................................ 128
7.5 Troubleshooting method ................................................................................... 129
7.5.1 LCD message list ...................................................................................... 129
7.5.2 Preparation for troubleshooting ................................................................. 150
44205401TH Rev.1
7.5. Troubleshooting the abnormal images ...................................................... 182
7.5.4 Network troubleshooting ........................................................................... 189
7.5.4.1 Connection error occurs with the Web browser ................................. 189
7.5.4.2 Print operation is not possible ............................................................ 195
7.5.4. Cannot create Certificate ................................................................... 196
7.5.4.4 Installation of Certificate is not possible............................................. 196
7.5.4.5 Other questionnaires ......................................................................... 198
7.5.4.7 Network function restrictions on Sleep mode .................................... 201
7.6 Fuse check ....................................................................................................... 202
7.7 Paper cassette switches versus Paper size correspondence table .................. 20
8. Connection diagrams..........................................................204
8.1 Resistance value check .................................................................................... 205
8.2 Parts location .................................................................................................... 209
8. F/W version number ......................................................................................... 218
8..1 ROM control number ................................................................................... 218
8..2 ROM version check and display .................................................................. 219
8.. PCB Maintenance Indication Stamp ............................................................ 219
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