43471801TH Rev.1 5 /
Oki Data CONFIDENTIAL
4. ADJUSTMENT ...................................................................................................51
4.1Gap between platen and print head ....................................................................................... 52
4.2Paper top positioning distance check ..................................................................................... 53
4.3Correcting cut-sheet 40-line feed height ................................................................................. 55
4.4Correcting both-direction print registration ............................................................................. 56
4.5Paper cut position check ........................................................................................................ 57
5. CLEANING AND LUBRICATION .......................................................................59
5.1 Cleaning ............................................................................................................................. 59
5.2 Lubrication ......................................................................................................................... 60
6. TROUBLESHOOTING AND REPAIR ................................................................66
6.1 Items to Check Before Repair ............................................................................................ 66
7. PROGRAM UPDATE76
7.1 Prepare to amount the ROM76
7.2 Creating EPROM for rewriting flash memory and installing it. ........................................... 76
7.3 Operation to start flash download. ..................................................................................... 77
7.3.1 Execution of the rewite operation.......................................................................... 77
7.3.2 Operation Check ................................................................................................... 78
7.4 Initial condition ................................................................................................................... 78
8. PARTS REPLACED PERIODICALLY ................................................................79
APPENDIX A PCB LAYOUT ....................................................................................80
APPENDIX B CIRCUIT SYMBOLS..........................................................................82
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