Instruction/ maintenance manual of the product 721 Oki
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MICROLINE 720/721 Printer Handbook.
Every effort has been made to ensure that the information in this document is com- plete, accurate and up-to-date. OKI assumes no responsibility for the r esults of errors beyond its control.
Important Safety Instructions Y our OKI printer has been carefully designed to give you years of safe, r eliable per- formance. As with all electrical equipment, however , there are a few basic precau- tions you should take to avoid hurting yourself or damaging the unit: • Read the setup and operation instructions in this manual carefully .
• If you’r e using an extension cord or power strip with the printer , make sure that the total of the amperes r equired by all the equipment on the extension is less than the extension’s rating. Generally , the total ratings of all equipment plugged into any one power line should not exceed 15 amperes.
C ontents Introduction ............................................................................................................. 1 Chapter 1: Installation ........................................................................................... 3 Unpacking .
Performing Basic T asks ............................................................................................ 39 Selecting Print Quality .................................................................................. 39 Selecting Character Pitch .
Appendix D: ASCII Character Codes ............................................................... 93 Lower ASCII Character Sets ................................................................................... 93 Upper ASCII Character Sets .........
ML720/721 Printer Handbook 1 This Guide is arranged to help you get your new MICROLINE 720 or 721 printer set up and running quickly as well as providing you with more detailed information for futur e refer ence.
2 Introduction.
ML720/721 Printer Handbook 3 C hapter 1: Installation This chapter explains how to unpack and install your new printer . Unpac king Unpack your printer and make sure you have the following items. If you ar e missing any of these items, contact your dealer immediately for a r eplacement.
4 Installation Removing Shipping Retainers 1. Open access cover by grasping tabs at either end and lifting. 2. Remove printhead shipping retainer (leave cover open for installation of rib- bon).
ML720/721 Printer Handbook 5 3. Hold the knob and remove the paper separator . 4. Remove the protective material. 5. Set and attach the post to the“ ∆ ”mark of the upper cover and the paper sepa- rator . 6. Remove the protective material from the pull-up roller assembly .
6 Installation 3. Holding ribbon cartridge with knob fac- ing up and ribbon sheild facing platen, fit grooves on either side at back end of cartridge over pins on ribbon plate. 4. Lower front of cartridge over printhead until it snaps into place, then turn knob in direction of arr ow (clockwise) to take up ribbon slack.
ML720/721 Printer Handbook 7 Interf ace por t Wire loops Pin assignments for the parallel, USB and the serial interfaces are listed in appendix E. Y ou must supply the cable for connecting your printer to your computer . a. In the case of parallel interface cable 1.
8 Installation Connection with Power 1. Make sure both printer and computer are OFF . 2. Plug power cord into back of printer . Plug other end into grounded outlet. 3. T urn printer on. Printhead will cross back and forth along platen, and POWER light will come on.
ML720/721 Printer Handbook 9 C hapter 2: Loading Paper Y our printer has provision for single-sheet paper feed from the top and for continu- ous-form paper feed fr om the rear .
10 Loading Paper Bottom feed (continuous forms only , thickness to 0.017” [0.44mm]) • Single-part continuous forms – 12 to 24 lb – Minimum 3” wide (* 2 ) • Carbonless, multi-part forms –.
ML720/721 Printer Handbook 11 SEL light Mov e to"T OP" Loading Single-Sheet Paper The single-sheet paper path is best for letter head stationery , memos, and envelopes. W e also recommend it for printing graphs and charts because it provides the most accurate contr ol of the paper .
12 Loading Paper P aper separator Wire f eed guide P aper f eed guides Press Flashes 3. Grasp back of paper separator and un- snap it from housing, then swing it up into single-sheet feed position, making sure that wire feed guide is nestled in separator .
ML720/721 Printer Handbook 13 M 1 2 3 Baseline Hold Press to feed paper down in micro increments Press to feed paper up in micro increments 5. Baseline for T op of Form (TOF) on pa- per is indicated by red line on clear plas- tic paper shield.
14 Loading Paper P osition "Rear" P aper separator Loading Rear-Feed Paper The rear-feed paper path is recommended for single-thickness, continuous fan-fold paper when printing spreadsheets, long r eports, etc. For graphics or charts, it’s best to use the single-sheet paper path.
ML720/721 Printer Handbook 15 T ractors 6. Locate tractors. 4. Hold up the middle of the paper sepa- rator , and pull upwards. 5. Rotate the paper separator forward and stand against the pull-up r oller assem- bly .
16 Loading Paper Lock le ver T ractor cov er 9. Pull paper , and place first two holes on each side over tractor pins. Please note that an equal number of pa- per holes must be engaged on either tractor in or der to ensure proper paper feed. P aper holes on pins 7.
ML720/721 Printer Handbook 17 10. Replace the paper separator , and insert until the paper separator and upper cover marks align. " "mark " "mark P aper separator Upper cov er.
18 Loading Paper 1 1. Close tractor covers and adjust left trac- tor to position edge of paper: reference marks on printer indicate left edge po- sition for the two most common paper sizes. When paper is properly aligned, lock left tractor in place by pushing back on lock lever .
ML720/721 Printer Handbook 19 15. Baseline for top of Form(TOF) on pa- per is indicated by red line on clear plas- tic paper shield. 16.If desired, change TOF setting using control panel: If form tear off is being selected in the printer menu, pr ess the TEAR button to bring the paper down to the print position.
20 Loading Paper 17. Press SEL button (SEL light will come on). T o temporarily change the T op of Form setting for a particular print job, deselect the printer and press the LF button until you reach the TOF position you want to use. The printer will r etain this setting un- til you turn it of f.
ML720/721 Printer Handbook 21 Paper Handling Y our printer has several handy paper handling features: • T ear • Form T ear-of f • Paper Park T ear Feature When you’re using continuous forms wi.
22 Loading Paper Forms T ear-off Feature Caution! Do not engage Forms T ear-of f when printing on labels! The Forms T ear-off feature can be engaged to automatically move the paper up to the tear position after the selected interval (500 milliseconds, one second, or two seconds).
ML720/721 Printer Handbook 23 Switching Paper Paths T o switch from continuous-form feed from the r ear or bottom (optional push or pull tractor installed) of the printer to single-sheet feed from the top: 1. T ear off printed pages. 2. Press P ARK button.
24 Loading Paper.
ML720/721 Printer Handbook 25 C hapter 3: Operation This chapter explains how to operate your printer . It also provides instructions on how to change the default settings and how to perform basic tas.
26 Operation The seven buttons to the left on your control panel are multi-function buttons. In r outine printer operation, they are used to manipulate the paper , but you can also use them to enter and make changes in the printer ’s program menu.
ML720/721 Printer Handbook 27 Print Mode In its normal operating state, your printer ’s front panel is in the Print Mode. Indicator Lights In the Print Mode, your printer has the following lights to indicate its status: 1. POWER light: Glows whenever printer is on.
28 Operation Buttons When the printer is selected (SEL light on), only the functions marked at the top of the bank of buttons (LF , FF/LOAD, TEAR, P ARK, QUIET) are in effect.
ML720/721 Printer Handbook 29 Summary of Front Panel Button Functions SEL SEL + SHIFT SHIFT LF LF+ SHIFT FF/LOAD FF/LOAD +SHIFT TEAR Selects/deselects printer. Resets Paper Out of Paper Jam Alarm. Also ends Font Test or Rolling ASCII test . Activates Menu Mode.
30 Operation TEAR+ SHIFT PARK PARK+ SHIFT QUIET QUIET+ SHIFT PRINT QUALITY PRINT QUALITY +SHIFT CHARAC- TER PITCH CHARAC- TER PITCH+ SHIFT FF/LOAD +TEAR N/A : Not applicable. Move the print head to Re- verse. Parks continuous-form pa- per. Move the print head to Forward.
ML720/721 Printer Handbook 31 SEL+LF QUIET+ PARK SEL+ FF/LOAD N/A : Not applicable. N/A N/A N/A Resets Menu to factory default. Resets Top of Form to factory default.
32 Operation Menu Mode When your printer is in the Menu Mode, you can use the front panel controls to change the defaults for the printer parameters, including emulation, page length, line spac- ing, typeface, pitch, etc.
ML720/721 Printer Handbook 33 Sample Menu The menu is made up of gr oups of parameters. W ithin each group is a list of items and each of those items has several possible settings.
34 Operation Summary of Menu Settings The table below details the entries in the printer Menu as it comes fr om the factory . The defaults ar e in bold face italic type. Other entries will appear in the Menu depending on what options you have installed and what emulation is engaged.
ML720/721 Printer Handbook 35 Bottom Feed Top Feed Set-Up 6 LPI , 8 LPI Off , 500 ms, 1 sec, 2 sec No , Yes 13.6" , 8" 11" , 11 2 / 3 ", 12", 14", 17", 5", 3", 3.5", 4", 5.5", 6", 7", 8", 8.
36 Operation Parallel I/F Buffer Print , Buffer Clear, Invalid +5V , Open Invalid , Valid Enable , Disable I-Prime Pin 18 Auto Feed XT * 3 Bi-Direction Group Item Setting * 3 EPSON mode Only.
ML720/721 Printer Handbook 37 Menu Mode Indicator Lights In the Menu Mode, the following lights indicate your printer ’s status: 1. POWER light: Glows when printer is on.
38 Operation Her e is a summary of the buttons active in the Menu Mode: 1. GROUP button: Pr ess to scan thr ough groups of listings. Each time you press the GROUP button, a line will print, showing the next gr oup in the Menu. T o go back one group, hold the SHIFT button while pr essing the GROUP button.
ML720/721 Printer Handbook 39 Performing Basic T asks Selecting Print Quality Y our printer allows you to select from four print qualities: utility , near letter quality (NLQ), high speed draft (HSD) and super speed draft (SSD). Utility printing, in Gothic, is the default, designed for preparing r ough drafts or internal correspondence.
40 Operation Selecting Character Pitch The character pitch determines the width of the individual characters and is mea- sured in characters per i nch (cpi). T o select the character pitch, press the CHARAC- TER PITCH button successively until the light underneath the pitch you wish to en- gage is lit.
ML720/721 Printer Handbook 41 The table below summarizes the fonts available from your printer: T esting Y our printer Y our printer has three your can run: the Font T est, the Rolling ASCII T est, and the Hexadecimal Dump T est.
42 Operation Font T est The Font T est pr ovides a printout c ontaining samples of available typefaces. Here’s a portion of a Font T est printout:.
ML720/721 Printer Handbook 43 T o run the Font T est: 1. Be sure paper is loaded. 2. T urn off printer . 3. Hold LF button for several seconds while turning printer on. (IF printer simply turns on without starting to print, you didn’t hold down LF button long enough.
44 Operation T o activate the Rolling ASCII T est: 1. Be sur e paper is loaded. Caution! For wide carriage Model 721, be sure you have wide paper loaded! 2. T urn off printer . 3. Hold QUIET button for several seconds while turning printer on. (If printer sim- ply turns on without starting to print, you didn’t hold down QUIET button long enough.
ML720/721 Printer Handbook 45 T o engage the Hexadecimal Dump Mode: 1. Be sure paper is loaded. 2. T urn off printer . 3. Hold SEL and FF/LOAD buttons for several seconds while turning on printer . The printer will print the line “ Hex Data Dump ” and be ready to r eceive data in the Hexadecimal Dump Mode.
46 Operation Y ou will find a list of the bar code printer commands for each emulation in appendix C. Her e is a brief explanation of each of the available bar codes, along with a sample printout for each one. UPC A Bar Code UPC (Universal Product Code) bar coding is used in the supermarket industry .
ML720/721 Printer Handbook 47 EAN 8 EAN (Eur opean Article Numbering) bar coding is a variation of UPC coding. EAN 8 encodes eight digits. EAN 13 EAN 13 encodes 13 digits and contains the same number of bars as UPC A. The thir- teenth digit combined with the twelfth digit pr ovides a code representing a country .
48 Operation Code 128 Code 128 has 106 dif ferent characters, each of which can have any one of three differ- ent meanings depending on which code set (A, B, or C) is engaged.
ML720/721 Printer Handbook 49 C hapter 4: W orking with Software This chapter covers the fundamentals of setting up commercial software packages for use with your printer . Be sure to r ead your software documentation carefully for more details. Basic T erminology Before we start, let’s examine a few terms with which you may not be familiar .
50 W orking with Software Emulations In order to eliminate hundreds of differ ent sets of printer commands, most printers emulate, or imitate, one of several general printers; i.e., they accept all of that printer ’s commands and behave as though they were the emulated printer .
ML720/721 Printer Handbook 51 Oki ML 520/1 IBM IBM Proprinter III IBM Proprinter II IBM Proprinter Oki ML 520/1 Epson Epson FX 850/1050 Epson FX 86/286 Epson FX Epson EX800/1000 Oki Microline 520/521 .
52 W orking with Software.
ML720/721 Printer Handbook 53 C hapter 5: Problem Solving, Maintenance, & Service This chapter provides solutions to some common printer problems and explains the r outine maintenance procedures that will help keep your printer in tip-top operating condition.
54 Ploblem Solving, Maintenance, & Service …I’m getting strange symbols, incorrect fonts, etc., when I try to print a document? The printer driver you have engaged does not agree with the emulation selected for your printer .
ML720/721 Printer Handbook 55 … the Alarm light is on and the Character Pitch 15 light is flashing? This indicates a paper loading error . T o stop the flashing light, press the SEL button.
56 Ploblem Solving, Maintenance, & Service The I-Prime signal is sent over the parallel interface (pin 31) and will automatically override any settings you have made using the fr ont panel buttons.
ML720/721 Printer Handbook 57 3. Slide ribbon cartridge along until it is centered on platen, being careful not to touch printhead. Center printhead Swing front end up to remov e 4 . Swing fr ont-end of cartridge up off printhead, then lift cartridge out and discard it.
58 Ploblem Solving, Maintenance, & Service 7 . Lower front end of cartridge over printhead until it snaps into place. T urn knob in dir ection of arrow (clock-wise) to take up any slack in ribbon.
ML720/721 Printer Handbook 59 Clearing Paper Jams Caution! Always turn the printer off befor e you turn the platen knob! Rear Feed Jams T o clear a rear-feed paper jam: 1. T urn off printer 2. T urn platen knob to back paper out of printer . Remove any ripped pieces of paper .
60 Ploblem Solving, Maintenance, & Service 4. Open tractor covers and r emove paper from printer . 5. Open access cover and lift off pull-up roller assembly . Note: Never attach or remove the pull-up roller assembly when the paper separator is in the standing state.
ML720/721 Printer Handbook 61 10. Replace pull-up roller assembly . Note: When installing a pull-up roller assem- bly , Shift the paper lever in agreement with the “Rear” mark before the installation. 1 1. Reload regular paper (open tractor cov- ers, place paper on pins, close tractor covers).
62 Ploblem Solving, Maintenance, & Service Single Sheet Feed Jams T o remove jammed single sheets of paper (top feed): 1. T urn printer OFF . 2. Rotate platen knob to back paper out of carriage. 3. If necessary , open access cover and lift off pull-up roller assembly to provide access to remove any ripped pieces from ar ound carriage.
ML720/721 Printer Handbook 63 Cleaning the Housing Y ou should clean the printer every six months (or after about 300 hours of operation). T o do this: 1. T urn printer OFF and remove paper from path. 2. Open access cover and remove pull-up roller assembly .
64 Ploblem Solving, Maintenance, & Service Accessories Y ou can add even mor e flexibility to your printer by means of the following optional accessories. Cut Sheet Feeder , Single-Bin and Dual-Bin Mounts on the platen to provide continu- ous single-sheet paper feed.
ML720/721 Printer Handbook 65 Pull T ractor , T op-Mount Used for bottom-feed of labels or heavy card stock, or in conjunction with the rear- feed tractor to provide more precise pa- per control when you’re using multi-part forms. Includes cover for installation in place of access cover .
66 Ploblem Solving, Maintenance, & Service Replacement P arts Replacement Part Access Cover , ML 720 Access Cover , ML 721 AC Cord Poll-up Roller Assembly , ML 720 Poll-up Roller Assembly , ML 721.
ML720/721 Printer Handbook 67 A ppendix A: Specifications Print Method Impact dot matrix Printhead 9 pins, 0.30 mm diameter with thermal protection Print Speed Mode Characters per Second (CPS) High Sp.
68 Appendix A: Specifications Resident Font Near Letter Quality Courier , Gothic Utility Gothic High Speed Draft Gothic Super Speed Draft Gothic Bar Code: Code 39, UPC A, UPC E, EAN 8, EAN 13, Inter- .
ML720/721 Printer Handbook 69 Cut sheets Single-part continuous forms Carbonless, multipart contin- uous form (orig. + 4 copies) Interleaf, multipart continu- ous form (orig. + 4 copies) Labels Envelopes, single feed Envelopes, continuous feed, non-overlap type Card stock Transparencies ML720: 7.
70 Appendix A: Specifications Dimensions (W x D x H) ML 720: 15.7 x 13.6 x 6 inch (398 x 345 x 153 mm) ML 721: 21.7 x 13.6 x 6 inch (552 x 345 x 153 mm) W eight ML 720: 16.
ML720/721 Printer Handbook 71 The menu selections for your printer ar e summarized below . Factory defaults are in- dicated in bold face italic . Explanations for each item follow the table. The table below summarizes all possible menu settings available with your printer .
72 Appendix B: Menu Selections Bottom Feed Top Feed Set-Up 6 LPI , 8 LPI Off , 500 ms, 1 sec, 2 sec No , Yes 13.6" , 8" 11" , 11 2 / 3 ", 12", 14", 17", 5", 3", 3.5", 4", 5.5", 6", 7", 8", 8.
ML720/721 Printer Handbook 73 Parallel I/F Serial I/F * 5 CSF Bin 1 * 4 CSF Bin 2 * 4 Buffer Print , Buffer Clear, Invalid +5V , Open Invalid , Valid Enable , Disable None , Odd, Even 8 Bits , 7 Bits .
74 Appendix B: Menu Selections Explanation of Menu Items These explanations are in alphabetical sequence to make it easier to look them up. Many of the items will appear only with optional equipment installed, as noted be- low .
ML720/721 Printer Handbook 75 Bottom Margin. V alid (factory default) or Invalid. Sets whether or not the printer will ignor e the bottom margin setting.
76 Appendix B: Menu Selections DSR Signal. Applies only when optional Interface is installed. V alid (factory default) or In- valid. Used with Ready / Busy protocol to select the way your system handles the DSR Signal. DTR Signal. Applies only when optional Serial Interface is installed.
ML720/721 Printer Handbook 77 Line Spacing. 6 lpi (factory default) or 8 lpi. Choose 8 lines per inch for tighter line spacing, to get more lines per page. Operator Panel Function. Full Operation (factory default) or Limited Operation. Change to Limited Operation to deactivate the PRINT QUARITY and CHARACTER PITCH buttons on the control panel.
78 Appendix B: Menu Selections Power Saving. Enable (factory default) or Disable. Enables or disables the power save mode. When the power save mode is enabled, the printer enters the power save mode when the time set in the Power Save T ime option elapses while the printer is idle.
ML720/721 Printer Handbook 79 Serial Data 7/8 Bits. Appears only if optional Serial Interface is installed. 8 Bits (fac- tory default) or 7 Bits. Change to 7 bits if your system uses a 7-bit data format. SI Select Pitch (10 CPI). IBM mode only . 17.1 CPI (factory default) or 15 CPI.
80 Appendix B: Menu Selections.
ML720/721 Printer Handbook 81 A ppendix C: Printer Commands Bar Code Commands Select Bar Code Type and Size Print Bar Code Data Print Postnet Bar Code Data Select Bar Code Type Print Bar Code Characte.
82 Appendix C: Priner Commands Character Size/Spacing (cont.) Start Double Width Printing Line by Line End Double Width Printing Line by Line Double Width Printing On Double Width Printing Off Double .
ML720/721 Printer Handbook 83 Graphics Single Density Graphics Double Density Graphics Double Speed/Double Density Graphics Quadruple Density Graphics Horizontal Control Backspace Carriage Return Marg.
84 Appendix C: Priner Commands * OKI-Unique command Vertical Control (cont.) Set Line Spacing to n / 216 " Set Line Spacing to 7 / 144 " * Set Line Spacing to n / 72 " Line feed compoun.
ML720/721 Printer Handbook 85 Epson FX Printer Commands Bar Code Commands Select Bar Code Type and Size * Print Bar Code Data * Print Postnet Bar Code Data * Print Bar Code Character Sets Select Inter.
86 Appendix C: Priner Commands Character Size/Spacing (cont.) Double Height Printing On Proportional Spacing On Proportional Spacing Off Set Intercharacter Spacing Character Style Select HSD Print Mod.
ML720/721 Printer Handbook 87 Graphics (cont.) Graphics Select/Print Reassign Graphics Select 9-pin Graphics Printing Horizontal Control Backspace Carriage Return Margin Setting, Left Margin Setting, .
88 Appendix C: Priner Commands Vertical Control (cont.) Set Line Spacing to n / 216 " Vertical Tab Set Vertical Tab Stops Line feed compound command Reset Vertical Tab to Defaults Set Vertical Fo.
ML720/721 Printer Handbook 89 OKI Micr oline (ML) Printer Commands Bar Code Commands Select Bar Code Type and Size Print Bar Code Data Print Postnet Bar Code Data Character Sets Select Standard Charac.
90 Appendix C: Priner Commands Character Style HSD Print Mode On Select Utility Print Mode Select NLQ Courier Font Select NLQ Gothic Font Select Font by Pitch and Point Italics On Italics Off Emphasiz.
ML720/721 Printer Handbook 91 Graphics (cont.) Graphics Mode Selection Graphics Print Mode Selection Horizontal Control Backspace Carriage Return Horizontal Tab Margin Setting, Left Margin Setting, Ri.
92 Appendix C: Priner Commands Vertical Control (cont.) Perform n / 144 " Line Feed Reverse Line Feed Set Line Spacing to 1 / 8 " Set Line Spacing to 1 / 6 " Set Line Spacing to n / 144.
ML720/721 Printer Handbook 93 Lower ASCII Character Sets Lower ASCII Character Sets (1/4) A ppendix D: ASCII Character Codes.
94 Appendix D: ASCII Character Codes Lower ASCII Character Sets (2/4).
ML720/721 Printer Handbook 95 Lower ASCII Character Sets (3/4).
96 Appendix D: ASCII Character Codes Lower ASCII Character Sets (4/4).
ML720/721 Printer Handbook 97 Upper ASCII Character Sets Upper ASCII Character Sets (1/4).
98 Appendix D: ASCII Character Codes Upper ASCII Character Sets (2/4).
ML720/721 Printer Handbook 99 Upper ASCII Character Sets (3/4).
100 Appendix D: ASCII Character Codes Upper ASCII Character Sets (4/4).
ML720/721 Printer Handbook 101 Epson International Character Substitutions.
102 Appendix D: ASCII Character Codes IBM International Character Substitutions.
ML720/721 Printer Handbook 103 MICROLINE International Character Substitutions.
104 Appendix D: ASCII Character Codes Code Page Character Sets Code Page Character Sets (1/3).
ML720/721 Printer Handbook 105 Code Page Character Sets (2/3).
106 Appendix D: ASCII Character Codes Code Page Character Sets (3/3).
ML720/721 Printer Handbook 107 A ppendix E: Interfacing * 1.2 mA maximum 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19-30 31 32 33 34- 35 36 To Printer To Printer To Printer To Printer To Printer To.
108 Appendix E: Interfacing Universal Serial Bus (USB) Universal Serial Bus Specification Revision 1.1 compliance. 1. Connector • Printer Side: “B” Receptacle (Upstream Input to the USB Device) • Cable Side: Series “B” Plug 2. Cable • Cable Length: Max 5 m (A cable must be met USB Spec Rev 1.
ML720/721 Printer Handbook 109 Installing the Serial Interface Caution! Handle the interface boar d with care to avoid damaging its components. The components can also be damaged by static discharges. W e recommend that you leave the board in its pr otective packaging until you’ve read these instructions and are ready to install it.
110 Appendix E: Interfacing 3. By inserting board to the far end, it is locked by the lock piece inside. Board Lock piece 4. Connect suitable interface cable (must be purchased separately) to printer con- nector and to serial port of your com- puter .
ML720/721 Printer Handbook 111 1 2 3 4 5 6 7 8-10 11 12-19 20 21-25 From Printer To Printer From Printer To Printer From Printer From Printer Protective Ground Transmitted Data Received Data Request t.
Oki Data Corporation 4-1 1-22 Shibaura, T el : (81) 3 5445 6158 Minato-ku, T okyo, Fax : (81) 3 5445 6189 108-8551, Japan www .okidata.co.jp Oki Data (Singapore) 78 Shenton W ay , #09-01, T el : (65) 6221 3722 Pte Ltd. Singapore 079120 Fax : (65) 6421 1688 www .
Oki Data Corporation 4-11-22, Shibaura, Minato-ku T okyo 108-8551 Japan T el: (81) 3 5445 6158 F ax: (81) 3 5445 6189 42113904EE.
An important point after buying a device Oki 721 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Oki 721 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Oki 721 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Oki 721 you will learn all the available features of the product, as well as information on its operation. The information that you get Oki 721 will certainly help you make a decision on the purchase.
If you already are a holder of Oki 721, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Oki 721.
However, one of the most important roles played by the user manual is to help in solving problems with Oki 721. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Oki 721 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
