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User’s Guide: English 3
Contents

1. Setting Up the Printer....................................................................................................................................... 6

1.1. Select a Location................................................................................................................................................................... 6
1.2 Where to install your printer .................................................................................................................................................6
1.3 Unpacking .............................................................................................................................................................................7
Getting Started ...........................................................................................................................................................................7
1.4 Installing the Printer.............................................................................................................................................................. 8
Getting to Know the OKIPOS 425S........................................................................................................................................... 8
1.4.1 Remove the Shipping Restraints .....................................................................................................................................9
1.4.2 Setting the Interface Board Assembly............................................................................................................................1 0
1.4.2.1 Setting the DIP Switches (RS-232C) ........................................................................................................................10
1.4.2.2 Installing the Interface Board Assembly .................................................................................................................. 11
1.4.3 Connecting the Computer .............................................................................................................................................12
1.4.4 Connecting the Cash Drawer .........................................................................................................................................12
1.4.5 Connecting the Customer Display.................................................................................................................................1 2
1.4.6 Connecting the Power.................................................................................................................................................... 12
1.4.7 Installing the Ribbon Cartridge..................................................................................................................................... 13
1.5 Installing the Paper..............................................................................................................................................................1 6
1.5.1 Roll paper....................................................................................................................................................................... 17
1.5.1.1 Adjusting the Roll Paper Guide................................................................................................................................17
1.5.1.2 Loading the Roll Paper.............................................................................................................................................1 9
1.5.1.3 Adjusting the Roll Paper Near End Sensing Position ..............................................................................................21
1.5.2 Cut-Sheet Paper (Slip).................................................................................................................................................... 22
1.5.2.1 Loading the Cut-Sheet Paper (Slip)...........................................................................................................................2 2
1.5.3 Cut-Sheet Paper (Validation/Stub).................................................................................................................................23
1.5.3.1 Loading the Cut-Sheet Paper (Validation/Stub)...................................................................................................... 23
1.5.4 Sprocket Paper (Tractor)................................................................................................................................................2 6
1.5.4.1 Loading the Sprocket Paper (Tractor) .......................................................................................................................26

2. Using the Printer .............................................................................................................................................30

2.1 Operation Panel Functions.................................................................................................................................................. 30
2.1.1 Switching Functions ......................................................................................................................................................31
2.1.2 LED Function.................................................................................................................................................................3 2
2.2 Local Functions................................................................................................................................................................... 33
2.2.1 Types.............................................................................................................................................................................. 33
2.2.2 Starting........................................................................................................................................................................... 34
2.3 Menu Function (Receipt) ....................................................................................................................................................35
2.3.1 OEM — Standard Model ...............................................................................................................................................35
2.3.2 OKI — Standard Model .................................................................................................................................................36
2.3.3 How to Operate...............................................................................................................................................................3 7
2.4 Hex Dump Function (Receipt) ............................................................................................................................................38
2.4.1 Print Format....................................................................................................................................................................3 8
2.4.2 How to Print ...................................................................................................................................................................38
2.5 Using the MICR Reader (Option) .......................................................................................................................................39
2.6 MICR Read Test (Receipt).................................................................................................................................................. 41
2.7 Rewinder Winding Evaluation Continuous Print Test (Receipt)....................................................................................... 43

3. Maintenance..................................................................................................................................................... 4 4

3.1 Replacing the Ribbon Cartridge......................................................................................................................................... 44
3.2 Replacing the Roll Paper ....................................................................................................................................................47
3.3 Clearing Paper Jams ............................................................................................................................................................4 9

4. Troubleshooting and Repair.......................................................................................................................... 53

4.1 Alarm Indication for a Failure .............................................................................................................................................53
4.1.1 Details of Alarm Indications ..........................................................................................................................................54
4.1.2 LED Indication...............................................................................................................................................................5 5