Epson T-750 User Manual Download Page 130

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Appendix C

Problem Solving and Maintenance

This appendix presents solutions for possible problems, explanations

of the T-750’s advanced features, tips on maintaining and transporting

your printer, and instructions on replacing the print head.

General Troubleshooting

Problem

Printer does not print

Recommendation

Make sure that the printer is turned on
and is on line. Both the POWER and

ON LINE lights should be on.

Make sure that the printer and computer

are connected. Be certain you are using
the correct cable.

Make sure the printer is connected to

only one interface.

If the program you are using allows you

to choose between screen output and
printer output, see that you have selected
printer output.

If the printer still does not print, try the

self test prccedure (see Chapter 1). If the
self test works correctly, the printer is all

right, and the problem lies elsewhere. If

the self test doesn’t work, call the Epson

1 toll-free number for assistance.

Problem Solving and Maintenance

C-1

Summary of Contents for T-750

Page 1: ...User s Manual ...

Page 2: ...ielded printer interface cable to this printer will invalidate the FCC Certification of this device and may cause interference levels which exceed the limits established by the FCC for this equipment If this equipment has more than one interface connector do not leave cables connected to unused interfaces All rights reserved No part of this publication may be reproduced stored in a retrieval syste...

Page 3: ...ecType l 16 Running the Self Test 1 17 Connecting the Printer to Your Computer 1 18 Choosing the Operating Mode with DIP Switches Chapter 2 Choosing and Loading Paper 2 1 Choosing Paper 2 l Using Single sheet Paper 2 6 Reinstalling the Tractor Unit 2 8 The Paper Thickness Lever Chapter 3 Using the T 750 with Application Programs 3 1 Printer Selection Menus 3 2 Computer Printer Communication 3 3 Wo...

Page 4: ...ogramming 5 8 Density Varieties 5 10 Designing Your Own Graphics 5 13 User defined Characters Appendix A Command Summary A 4 Commands in Numerical Order A 7 Epson ESC P Commands A 36 IBM Printer Emulation Mode Commands Appendix B Character Tables B l Epson Mode B 9 Epson International Character Sets B 11 IBM Printer Emulation Mode Appendix C Problem Solving and Maintenance C l General Troubleshoot...

Page 5: ...tialization Settings D 2 DIP Switch Settings D 3 International Character Sets Appendix E Technical Specifications E 1 Printing E l Paper E 2 Mechanical E 2 Electrical E 3 Environment E 3 Parallel Interface E 5 Data Transfer Sequence Glossary Index Contents v ...

Page 6: ... to Near Letter Quality NLQ and condensed print All you have to do is press the button for the style you want While the T 750 is printing the SelecType panel shows you what choices it s using l If you are using software designed for an IBM printer you have the choice of using the T 750 in Epson mode or IBM printer emulation mode Even better you can combine the best of both worlds the powerful Epso...

Page 7: ...y there is a glossary of printer terms a comprehensive index and inside the back of the manual is a pull out Quick Reference card containing the information you need most Where to Get Help For technical assistance with your T 750 printer just call the toll free Epson number l 800 421 5426 7 AM to 5 PM PST For warranty repairs and to find out the location of your nearest Authorized Epson Customer C...

Page 8: ...st remove the printer from the box and take off all outside plastic covering and foam supports Make sure you have received all the parts shown in the illustration below Tilt the tractor cover up and remove the two foam pads underneath it These pads protect the tractor unit during shipping be sure to save them Setting Up Your T 750 Printer 1 1 ...

Page 9: ...shaft on the right side of the printer as shown in Figure 1 2 Figure I 2 Protective items Print head protector 1 Remove the left locking tab 2 Remove the print head protector 3 Move the print head to the left 4 Remove the right locking tab and the platen protector 2 Selecting the Right Location The most important consideration in choosing a location for your printer is that it be close enough to c...

Page 10: ...ure dust and excessive heat such as a heater or direct sunlight If you are going to use continuous feed paper clear enough space around the printer so that the paper has an unobstructed path in and out of the printer There are three common methods of arranging a printer and continuous paper l Using a printer stand with the paper stacked underneath it l Using a desk or table as a stand with the pri...

Page 11: ...the cartridge by the two plastic tabs Lower the cartridge into the printer guiding the two pins on each end of the cartridge into the slots in the printer frame as shown in Figure 1 4 Press firmly on each end of the cartridge to make sure the pins are firmly seated in the slots 5 Now use the point of a pencil to guide the ribbon into place be tween the ribbon guide and the print head as shown in F...

Page 12: ...Figure 1 4 Installing the ribbon cartridge Figure l 5 Positioning the ribbon Setting Up Your T 750 Printer 1 5 ...

Page 13: ... When you receive your T 750 it is set up to print on continuous feed paper If you plan to use single sheet paper turn to Chapter 2 for instructions on setting up the printer for single sheets If you have bought the optional automatic sheet feeder complete the remainder of the setup steps before you install the automatic sheet feeder which has its own manual The T 750 tractor units are adjustable ...

Page 14: ...igure 1 6 Installing the paper rest 4 Pull both the paper release lever and the paper bail lever toward the front of the printer Figure 1 6 shows where these levers are Setting Up Your T 750 Printer 1 7 ...

Page 15: ...olders to the left and right Figure 1 7 Pin feed locking levers 2 Move the left holder so that the locking lever is about l 4 inch from the left side and push the locking lever back to lock that holder in place Leave the right holder unlocked 3 Open the pin feed covers as shown in Figure l 8 WARNING Do not use the pin feed covers to move the pin feed holders 1 8 Setting Up Your T 750 Printer ...

Page 16: ...oving the paper with a side to side motion makes it easier to push the paper through 5 Pull the paper up until the top is above the pin feed holders Fit the holes on the left side of the paper over the pins in the left holder as shown in Figure l 9 and close the cover Figure 1 9 Fitting the paper over the pin feeds Setting Up Your T 750 Printer 1 9 ...

Page 17: ...ing 1 Push the paper bail lever back 2 Hold the paper guide above the printer Insert the right hinge tab into the right tab slot as shown in Figure l 10 Then insert the left tab into the left slot and push the guide back so that it is horizontal Figure 1 10 Installing the paper guide This guide keeps paper that is coming out of the printer from interfering with the paper going in The guide is also...

Page 18: ...perforations The paper should be in this position when the power is turned on or when software initializes the printer or sets the page length 4 Replace the tractor cover Loading single sheet paper The T 750 can also accommodate single sheet paper It can be loaded one sheet at a time as shown in Chapter 2 or by using the optional automatic sheet feeder Chapter 2 also contains information on how to...

Page 19: ... seriously damage the mechanism Now turn the power ON with the switch on the left side of the printer When you turn on the printer three things happen l The print head moves back and forth and stops at the left side of the printer this is the home position l The printer is initialized and set to certain default settings which are fully described in Appendix D l The green power light on the control...

Page 20: ...tton ejects a single sheet of paper or advances continuous paper to the next top of form When the printer is on line and in NLQ mode pressing the button selects the Roman font LINE FEED SANS SERIF When the printer is off line this button advances the paper one line each time you press it or continuously if you hold it down When the printer is turned on use this button to advance paper When the pri...

Page 21: ...re characters on a line Draft is for fast printing and NLQ for higher quality work In the condensed mode all characters are about 60 of their normal width Two NLQ fonts are available Roman and Sans Serif You select them by using the FORM FEED and LINE FEED buttons while the printer is on line The FORM FEED button selects Roman and the LINE FEED button selects Sans Serif A software command to chang...

Page 22: ...ing specific control codes to cancel certain typestyles These signals or control codes may cancel your SelecType settings One reset signal however does not affect your SelecType settings This is the ESC command You can see whether your program is changing your settings by watching the buttons when printing starts If the lights change the program is controlling the typestyles If your application pr...

Page 23: ...aper to avoid printing on the platen To run the self test in the Near Letter Quality NLQ mode hold down the FORM FEED button at the same time you turn the printer on When the printing starts release the FORM FEED button The self test first prints the version number of the printer and several lines of settings that are explained in the last section of this chapter Then it prints the characters from...

Page 24: ...ly Be sure that your cable is a shielded cable If you do not know what kind of interface your computer requires consult its manual For further information on the standard interface see Appendix E The parallel interface Before connecting a parallel interface cable see that both the printer and computer are turned off Then plug the connector into the printer Next squeeze the clips gently and click t...

Page 25: ...e in two groups and are numbered as shown in Figure 1 14 As you can see in the example below the first part of the self test shows the settings of the switches You will find your own self test printout helpful as you use this section Character mode Shape of zero CG Table Protocol mode Print Quality Country Page Length CSF Mode Skip Perforation Normal 1 1 OFF 0 Unslashed 1 2 OFF Italics 1 3 OFF ESC...

Page 26: ...r printing The rest of this manual refers to the ESC P mode simply as the Epson mode The IBM printer emulation mode is for software that is designed only for IBM printers It is not necessary to use this mode for your T 750 to be compatible with IBM computers As you can see from the list of Epson and IBM printer emulation mode commands in Appendix A the Epson mode has more commands and many more ca...

Page 27: ...aracter graphics set depends upon the software you use For most applications choose the Epson mode and the Character Graphics set DIP switch l 4 OFF and DIP switch 1 3 ON That way you can set up your software for an Epson printer and have the full power of the Epson commands If you have trouble printing italics change DIP switch 1 3 to OFF to choose italics instead of character graphics On the oth...

Page 28: ...perforated edge strips Carbon copies If you use multi part forms or carbon copies in the T 750 use no more than three sheets or parts at a time with a total thickness of no more than 0 17 mm Also change the paper thickness setting as described at the end of this chapter Using Single sheet Paper The automatic sheet loading feature of the T 750 gives you short printing times by combining fast loadin...

Page 29: ...nstalled on the printer To remove it simply pull the back of the cover toward you until it is vertical Then lift the cover up and off the printer 2 Be sure that you have removed the protective items as described on page l 2 3 Remove the tractor unit Simply press the release levers shown in Figure 2 1 with your thumbs rock the tractor unit back and lift it off the printer Figure 2 1 Removing the tr...

Page 30: ...hown in Figure 2 2 Next insert the left tab into the left slot When both tabs are in the slots push the guide back so that it is horizontal and then pull it toward you until it stops at an angle about 45 degrees Figure 2 2 Installing the paper guide Paper bail lever Choosing and Loading Paper 2 3 ...

Page 31: ...oth the paper release lever and the paper bail lever toward the back of the printer Figure 2 2 shows where these levers are 3 Make sure the ON LINE light is OF If it is ON press the ON LINE button once 4 Place the paper on the paper guide as shown in Figure 2 3 below Push the paper firmly into the printer then let go of it Figure 2 3 Inserting the paper 2 4 Choosing and Loading Paper ...

Page 32: ...Figure 24 Then tilt the cover back into place Figure 2 4 Installing the printer cover When you have learned this procedure you ll probably leave the cover on when you load single sheet paper If you wish you can raise the cover to the vertical position while you re loading the paper The two icons small pictures on the printer cover will help you remember the correct positions of the levers Now you ...

Page 33: ... the ON LINE light goes off automatically l If your software handles printing page by page it probably stops sending characters at the end of a page and prompts you to insert more paper In this case the ON LINE light probably remains on and the first thing you should do is press the ON LINE button once to turn it off Once the ON LINE light is off remove the sheet that has just been printed and loa...

Page 34: ...Figure 2 5 Reinstalling the tractor unit Choosing and Loading Paper 2 7 ...

Page 35: ...when you print carbon copies Before moving the paper thickness lever always turn off the power open the printer cover or the tractor cover and move the print head to the middle of the printer The paper thickness lever shown in Figure 2 6 has six positions Figure 2 6 Paper thickness lever 2 8 Choosing and Loading Paper ...

Page 36: ...r positions Paper Lever thickness position Single 2nd With 1 copy 3rd With 2 copies 4th Maximum total thickness IS 0 17 mm Position 1 is for thinner paper and positions 5 and 6 are for thicker paper These positions should rarely be used If they are the printing quality will not necessarily be as good as on paper as specified in the technical specifications Always return the lever to the second pos...

Page 37: ...stallation or setup procedure that presents a list of printers to choose from The T 750 uses the same command set as the Epson FX 286e If the menu does not list this printer choose one of the following They are listed in order of preference FX 86e EX 1000 or EX 800 FX 286 FX 185 or FX 85 FX lOO or FX 80 FX 100 or FX 80 FX LX Epson printer Draft printer If you plan to use the IBM printer emulation ...

Page 38: ... and 33 other codes called control codes The control codes are for such functions as sounding the beeper and performing carriage returns Because the 33 control codes are not enough to control all possible printer functions most printer commands are actually a sequence of two or more codes One of the 33 control codes the escape code signals the beginning of a sequence of codes Therefore most printe...

Page 39: ...rs demand the most from your printer When you create and print a document you may use many print styles and fonts add headers and footers and use bold italic and other effects Once you have installed your word processor by using the list on page 3 1 you can ordinarily use a fixed set of printer features by using a word processor command to place markers around the text to be altered When the docum...

Page 40: ... having difficulty printing check the troubleshooting section in your word processor s manual and Appendix C of this manual Spreadsheets Although spreadsheets seldom use as many printing styles as word processors they do have some very specific requirements Installation and column width If your spreadsheet program provides a list of printers use the list on page 3 l to find the proper selection If...

Page 41: ...mands Then look in the Command Summary Appendix A in this manual to find the proper codes to send For example your spreadsheet might use a setup string to send printer commands To prepare a setup string for condensed elite you would look up the proper command in the Command Summary The command for elite is ESC M and the command for condensed is SI because most spreadsheets use the decimal equivale...

Page 42: ...ng different dot densities to produce a realistic scale of grays Most graphics programs have a printer selection procedure in which case you should check the list on page 3 l to find the proper selection Programming Languages Most users rely on application programs to send commands to the printer An awareness of programming languages however can be helpful in exploring a printer s potential or tro...

Page 43: ...ent 100 LPRINT CHR 27 CHR 69 This line sends ASCII codes 27 and 69 to the printer selecting emphasized printing Most versions of BASIC permit the ASCII codes in the CHR function to be given in either decimal as above or hexadecimal Also if the code corresponds to a printable character the character itself can be used in quotation marks in the LPRINT statement The command shown above could therefor...

Page 44: ...ity and NLQ fonts The printer has two levels of print quality draft and NLQ Near Letter Quality Draft printing is fast making it ideal for drafts and other preliminary work NLQ printing takes a little longer but it produces more fully formed characters for presentation quality documents The printout below shows the differences between draft NLQ Roman and NLQ Sans Serif so that you can compare the ...

Page 45: ... Therefore a narrow letter like i receives less space than a wide letter like W as you can see in the printout below Pica ABCDEFGHIJKLMnopqrstuvwxyz Proportional ABCDEFGHIJKLMnopqrstuvwxyz The character tables in Appendix B list the widths of all proportional characters Double wide double high and condensed In addition to the basic pitches and the proportional mode the T 750 offers three other mod...

Page 46: ...ives you even more Widening or narrowing the characters also widens or narrows the spaces between words and letters Because word processors usually create a left margin by printing spaces you may need to change the number of characters on a line to keep the margins correct if you change widths For example a left margin of five pica characters is the same as one of six elite characters Special Effe...

Page 47: ... with text and combined with superscripts and subscripts in a mathematical formula average a1 a2 an n Using Different Character Sets The T 750 incorporates a new character set Epson Character Graphics This set allows you to take advantage of the power of the Epson mode commands and still print out the character graphics used by IBM and compatible computers and by much application software For exam...

Page 48: ...d Latin American A complete list of these characters is in Appendix B Also all text characters can be printed in italics in Epson mode You can use this typestyle for special emphasis or as an alternative typeface I t a l i c s g i v e e m p h a s i s t o w o r d s They are an attractive alternative style Page Layout and Other Commands The remaining commands in the Command Summary are not normally ...

Page 49: ...that it can print them just as if they were ordinary letters because many application programs use graphics you may be able to print pictures and graphs like the ones on this page and the next by simply giving your software a few instructions The quickest and easiest way to print graphics on your T 750 is to use an application graphics program With such programs you usually create an image on your...

Page 50: ...derstand dot graphics you need to know a little about how the T 750 s print head works The printer s print head has nine pins As it moves across the page electrical impulses cause the pins to fire Each time a pin fires it strikes the inked ribbon and presses it against the paper to produce a small dot As the head moves across the paper the pins fire time after time in different patterns to produce...

Page 51: ...nter prints one line then advances the paper and prints another just as it does with text To keep the print head from leaving gaps between the graphics lines as it does between the text lines the line spacing must be changed to eliminate the space between lines With a change in line spacing the T 750 can print finely detailed graphic images that give no indication that they are made up of separate...

Page 52: ...th this numbering system any combination of the eight pins adds up to a decimal number between 0 and 255 and no numbers are duplicated Before you can put these numbers in a graphics program however you need to know the format of the graphics commands Graphics Commands The graphics mode commands are quite different from most other commands For most of the other modes such as emphasized and double w...

Page 53: ...line Since the printer does not use decimal numbers larger than 255 the graphics commands use two numbers for reserving columns Because the commands are set up for two numbers you must supply two even if you need only one When you need fewer than 256 columns it is easy to determine n1 and n2 nl is the number of columns you are reserving and n2 is zero For example to send data for 200 columns of gr...

Page 54: ...gram If you prefer another programming language the principles are exactly the same Therefore you can easily adapt the program to the language you prefer The first line of the program specifies single density graphics for 40 columns 100 LPRINT CHR 27 K CHR 40 CHR 0 The second line is the data that is printed as pin patterns It uses the number 74 to produce one of the patterns shown in Figure 5 1 T...

Page 55: ...r format Printing taller patterns The next example shows how several lines of graphics can be formed into a figure taller than eight dots It uses programming techniques for producing textured or repetitive patterns The program is listed below The lines inside each pair of FOR and NEXT statements have been indented so that you can see how the program works the spaces are not needed for the program ...

Page 56: ...Although all the examples so far in this chapter have been in the single density graphics mode there are six other eight pin densities and two that use all nine pins Nine pin graphics is not necessary for most uses but you can find the command ESC in the Epson mode command summary The four most common eight pin modes are available in both Epson and IBM printer emulation modes Their commands are ES...

Page 57: ...erns in these two modes however you must see that no dots overlap Reassigning a graphics mode Another graphics command lets you assign a different eight pin graphics mode to one of the specific eight pin graphics commands You can use it with graphics software programs to quickly change the density and proportions of your printouts Changing the graphics option changes the width without changing the...

Page 58: ... dots you must decide which graphics density you want Figure 5 2 shows the differences between three common modes so that you can choose the one you want In this figure you can see the main rules for graphic design in the three densities l In single density no dots can be placed on vertical lines l In high speed double density dots can be placed on vertical lines but no dots can overlap l In low s...

Page 59: ...n pattern by dividing the design grid into separate print lines For the arrow design the grid was divided into two lines each seven dots high Then each column was examined to calculate the graphics data The results for the first line are shown in Figure 5 4 The pin values are on the left and the sums at the bottom of each column Figure 5 4 Calculating data 128 64 32 16 8 4 2 1 Graphics and User de...

Page 60: ...ines 130 and 140 use the number 41 100 WIDTH LPT1 255 110 LPRINT CHR 27 A CHR 7 120 FOR ROW 1 TO 2 130 LPRINT CHR 27 Y CHR 41 CHR 0 140 FOR COLUMN 1 TO 41 150 READ N 160 LPRINT CHR N 170 NEXT COLUMN 180 LPRINT 190 NEXT ROW 200 END 210 DATA 64 32 80 8 68 2 64 0 64 0 220 DATA 64 0 64 0 32 0 16 0 8 0 230 DATA 8 0 8 0 8 0 810 8 0 8 0 8 0 240 DATA 184 64 32 16 8 4 2 250 DATA 8 16 40 64 136 0 8 0 8 0 26...

Page 61: ...inition is stored in temporary memory RAM The original character with the same code remains in the printer s permanent memory ROM and you can print either of them when needed Design grids The process of defining a character is much like printing dot graphics because you send the printer precise instructions on where you want each dot printed In fact planning a user defined character is like planni...

Page 62: ...2 a1 dl d n You can define more than one character with a single command The values nl and n2 are the ASCII codes of the first and last characters you are defining If you are defining only one character nl and n2 are the same You can use any codes between 32 and 127 or 161 and 254 decimal for nl and n2 but it is best not to define decimal 32 which is the code for a space You can also use other cod...

Page 63: ... CHR 27 CHR 1 199 LPRINT 200 LPRINT CHR 27 CHR 0 218 LPRINT 220 END 230 DATA 32 80 168 84 42 84 168 80 32 0 0 In line 100 the ESC x 0 command selects draft style printing The actual character definition starts in line 110 The two at signs in line 120 are nl and n2 the range of characters being defined in this case a range of one Line 130 contains al The information about the character design which...

Page 64: ...r set and try to print other characters the only one that will print is the heart If you send the code for a character that is not defined it is printed as a space In many cases you will want to redefine only a few of the characters leaving the rest of the alphabet as it is As you have seen it is possible to switch back and forth between the normal character set and the user defined character set ...

Page 65: ...r any other character follow these rules to calculate al 1 If you design a character narrower than nine columns you can balance the number of empty columns on either side with the following method Starting with a1 equal to 8 subtract 1 for every blank column on the right and add 16 for every blank column on the left 2 If the character should be printed with the top eight pins add 128 For example i...

Page 66: ...ned characters are lost For example some computers send an INIT signal each time BASIC is loaded or when certain application programs start up and most computers do it if you have to reset them If the program resets the printer with the ESC command the ROM set is selected but the user defined characters are not lost The IBM printer emulation mode has a different method of defining characters See p...

Page 67: ... IBM printer emulation mode The second part of this appendix lists and describes Epson mode commands and IBM printer emulation mode commands separately the commands are divided into the following subjects Printer Operation Data Control Vertical Motion Horizontal Motion Overall Printing Style Print Size Print Enhancement Word Processing Character Sets User defined Characters Graphics Each command h...

Page 68: ...For instance to print in condensed mode the code format is ASCII code SI Decimal 15 Hexadecimal 0 F This code can be sent from a program by sending the code 15 directly More complex commands consist of two or more character codes For example to print in proportional mode the code format is the following ASCII code ESC p n Decimal 27 112 n Hexadecimal 1B 70 n In this case n can be either 1 or 0 to ...

Page 69: ...ol in that column For example you press the control key and A at the same time to send the value 1 Some programs that use this system cannot use control and many programs use the control keys for other purposes Dec 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 Hex 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F 10 11 12 13 14 15 16 17 18 19 1A 1B Control Key A B C D E F...

Page 70: ...e DC1 17 11 Select printer DC2 18 12 Cancel condensed mode DC2 18 12 Cancel condensed elite DC3 19 13 Deselect printer DC4 20 14 Cancel double wide 1 line CAN 24 18 Cancel line DEL 127 7F Delete character ESC SO 14 0E Select double wide 1 line ESC SI 15 0F Select condensed mode ESC EM 25 19 Automatic sheet feeder on off ESC SP 32 20 Set intercharacter space ESC 33 21 Master select ESC 35 23 Cancel...

Page 71: ... 55 37 Cancel ESC 6 A 32 55 37 Select standard character set A 43 56 38 Disable paper out sensor A 9 A 9 57 39 Enable paper out sensor A 9 A 9 58 3A Copy ROM into RAM A 31 58 3A Select elite pitch A 41 60 3C Select unidirectional mode l line A 8 61 3D Set MSB to 0 A 10 61 3D Define user defined characters A 45 62 3E Set MSB to 1 A 11 63 3F Reassign graphics mode A 35 64 40 Initialize printer A 7 6...

Page 72: ...7 A 27 ESC U 85 55 Turn unidirectional mode on off A 9 A 9 ESC W 87 57 Turn double wide on off A 25 A 25 ESC X 88 58 ESC Y 89 59 ESC Z 90 5A ESC 91 5B ESC 92 5C ESC 1 92 5C ESC 94 5E ESC 94 5E ESC _ 95 5F ESC a 97 61 ESC b 98 62 ESC k 107 6B ESC 1 108 6C ESC p 112 70 ESC s 115 73 ESC t 116 74 ESC w 119 77 Set left and right margins High speed dbl density graphics Quadruple density graphics Turn do...

Page 73: ...nts Resets the printer mode and clears the buffer of printable data on the print line preceding the command Selection DC1 Select Printer Format ASCII code DC1 Decimal 17 Hexadecimal 1 1 Comments Returns the printer to the selected state if it has been deselected by the printer deselect code DC3 Does not select the printer if it has been switched off line by pressing the ON LINE button Command Summ...

Page 74: ... 1B 73 n Comments The following values can be used for n 1 Mode is turned ON The characters 0 and 1 0 Mode is turned OFF can also be used Printing direction ESC Select Unidirectional Mode one line Format ASCII code E S C Decimal 2 7 60 Hexadecimal 1B 3C Comments Printing is normally bidirectional This command selects unidirectional printing for one line only It is cancelled by a carriage return Th...

Page 75: ...onal printing for more accurate positioning ESC 8 Disable Paper out Sensor Format ASCII code ESC 8 Decimal 27 56 Hexadecimal 1B 38 Comments Turns off the paper out sensor so that you can print to the end of a single sheet of paper ESC 9 Enable Paper out Sensor Format ASCII code ESC 9 Decimal 27 57 Hexadecimal 1B 39 Comments Cancels ESC 8 Therefore the printer beeper sounds and printing stops when ...

Page 76: ...tomatic sheet feeder is installed It is ignored if any value other than 0 or 4 is used for n The command overrides the setting of DIP switch 2 2 MSB control Note MSB is the Most Significant Bit MSB control ESC ESC and ESC is not valid for graphics or user defined characters ESC equal Set MSB to 0 Format ASCII code ESC Decimal 27 61 Hexadecimal 1B 3D Comments Sets the MSB of all incoming data to 0 ...

Page 77: ...he MSB bit of all incoming data as 1 ESC Cancel MSB Control Format ASCII code ESC Decimal 27 35 Hexadecimal 1B 23 Comments Cancels the MSB control set by ESC or ESC Beeper BEL Format ASCII code BEL Decimal 7 Hexadecimal 07 Beeper Comments Sounds the printer s beeper Command Summary A 11 ...

Page 78: ...IP switch 24 is ON or the AUTO PEED XT line on the parallel interface is held LOW CAN Cancel Line Format ASCII code CAN Decimal 24 Hexadecimal 18 Comments Removes all text on the print line but does not affect control codes DEL Delete Character Format ASCII code DEL Decimal 127 Hexadecimal 7F Comments Removes the last text character on the print line but does not affect control codes A 1 2 Command...

Page 79: ...ASCII code ESC C n Decimal 27 67 n Hexadecimal 1B 43 n Comments Sets the page length to n lines in the current line spacing The value of n must be from l 127 The top of form position is set to the current line ESC C 0 Set Page Length in Inches Format ASCII code ESC C NUL n Decimal 27 67 0 n Hexadecimal 1B 43 00 n Comments Sets the page length to n inches The value of n must be from l 22 The top of...

Page 80: ... skip 6 DIP switch 2 3 performs the same function This setting is cancelled by ESC 0 and also by ESC C or ESC C NUL The value of n must be from 1 127 ESC O Cancel Skip over perforation Format ASCII code ESC 0 Decimal 27 79 Hexadecimal 1B 4F Comments Cancels the skip over perforation set by ESC N Overrides the setting of DIP switch 2 3 Line feeding LF Line Feed Format ASCII code LF Decimal 10 Hexad...

Page 81: ...Hexadecimal 1B 31 Select 7 72 inch Line Spacing Comments Sets the line spacing to 7 72 of an inch for subsequent line feed commands The 1 is the character one and not lowercase L or ASCII code 1 ESC 2 Select l 6 inch Line Spacing Format ASCII code ESC 2 Decimal 27 50 Hexadecimal 1B 32 Comments Sets the line spacing to l 6 of an inch for subsequent line feed commands The 2 is the character two and ...

Page 82: ... Format ASCII code ESC A n Decimal 27 65 n Hexadecimal 1B 41 n Comments Sets the line spacing to n 72 of an inch for subsequent line feed commands The value of n must be from O 85 ESC J Perform n 216 inch Line Feed Format ASCII code ESC J n Decimal 27 74 n Hexadecimal 1B 4A n Comments Advances the paper n 216 of an inch The value of n must be from O 255 This command produces an immediate line feed...

Page 83: ... not affected by subsequent changes in line spacing The tab settings are entered as nl n2 etc all from l 255 in ascending order The NUL character indicates the end of the command All settings are stored in channel 0 see ESC b ESC B NUL clears the tab settings ESC b Set Vertical Tabs in Channels Format ASCII code ESC b c n1 n2 NUL Decimal 27 98 c n1 n2 0 Hexadecimal 1 B 62 c n1 n2 00 Comments Funct...

Page 84: ...portional mode are treated as pica This command clears previous tab settings and all previous characters in the print line Use lowercase 1 for left not the numeral one The minimum space between the margins is the width of one double wide pica character ESC Q Set Right Margin Format ASCII code ESC Q n Decimal 27 81 n Hexadecimal 1 B 51 n Comments Sets the right margin to n columns in the current pi...

Page 85: ...graphics printing the print position of subsequent data is moved back to the point at which graphics printing started ESC Set Absolute Print Position Format ASCII code ESC n1 n2 Decimal 27 36 n1 n2 Hexadecimal 1B 24 n1 n2 Comments This sequence specifies the distance from the currently set left margin that subsequent characters are to be printed using this formula total number of dots nl n2 x 256 ...

Page 86: ... left subtract it from 65536 Send the resulting number using this formula total number of dots nl n2 x 256 The command is ignored if it would move the print position outside the current margins Horizontal tabbing HT Tab Horizontally Format ASCII code HT Decimal 9 Hexadecimal 09 Comments Advances the print position to the next horizontal tab setting The default settings are at intervals of eight ch...

Page 87: ...ter pitch is changed and for proportional printing the size of pica characters determines the tab positions Overall Printing Style E S C x Select NLQ or Draf F o r m a t ASCII code ESC x n Decimal 27 120 n Hexadecimal 1 B 78 n C o m m e n t s The following values can be used for n 0 Selects the draft mode The characters 0 and 1 1 Selects the Near Letter can also be used Quality NLQ mode E S C k S ...

Page 88: ...sed 4 Emphasized 8 Double strike 16 Double wide 32 Italic 64 Underline 128 Hex 00 01 02 04 08 10 20 40 80 Pica cannot be combined with elite and proportional cannot be condensed If both proportional and condensed are selected proportional overrides condensed Print Size and Character Width ESC P Select Pica Pitch Format ASCII code ESC P Decimal 27 80 Hexadecimal 1 B 50 Comments Selects pica pitch 1...

Page 89: ... of proportional characters varies from character to character Therefore a narrow letter like i receives less space than a wide letter like W The proportional widths are given in the character tables which appear in Appendix B This command overrides condensed SI Select Condensed Mode Format A S C I I c o d e S I Decimal 15 Hexadecimal OF Comments Prints characters at about 60 percent of their norm...

Page 90: ...condensed printing set by SI ESC SI SelecType or DIP switch l l S O Format ASCII code s o Decimal 14 Hexadecimal 0 E Comments Select Double wide Mode one line Double wide mode doubles the width of all characters This mode is cancelled by a carriage return or DC4 ESC SO Select Double wide Mode one line Format ASCII code ESC SO Decimal 27 14 Hexadecimal 1B 0E Comments Duplicates the SO command A 24 ...

Page 91: ...be used for n 1 The mode is turned ON The characters 0 and 1 0 The mode is turned OFF can also be used Double wide mode doubles the width of all characters ESC W Turn Double high Mode On Off Format ASCII code ESC w n Decimal 27 119 n Hexadecimal 1B 77 n Comments The following values can be used for n 1 The mode is turned ON The characters 0 and 1 0 The mode is turned OFF can also be used Double hi...

Page 92: ...st ESC F Cancel Emphasized Mode Format ASCII code ESC F Decimal 27 70 Hexadecimal 1B 46 Comments Cancels emphasized the mode selected by ESC E ESC G Select Double strike Mode Format ASCII code ESC G Decimal 27 71 Hexadecimal 1B 47 Comments Makes text bolder by printing each line twice with the second printing slightly below the first In NLQ the mode is not available but is not cancelled A 2 6 Comm...

Page 93: ...pace The ASCII code 0 or the character 0 can be used in this command It is cancelled with ESC T ESC S1 Select Subscript Mode Format ASCII code ESC S SOH Decimal 27 83 1 Hexadecimal 1B 53 01 Comments Prints characters about two thirds of the normal height in the lower part of the character space The ASCII code 1 or the character 1 can be used in this command It is cancelled with ESC T ESC T Cancel ...

Page 94: ...mal 27 97 n Hexadecimal 1B 61 n Comments NLQ Justification The following values can be used for n 0 Selects left justification 1 Selects centering 2 Selects right justification 3 Selects full justification The default setting is n 0 Full justification n 3 is performed when the buffer becomes full or when one of the following is received CR VT LF FE The commands HT and BS are invalid except in n 0 ...

Page 95: ...0th of an inch Character Sets ESC t Select Character Table Format ASCII code ESC t n Decimal 27 116 n Hexadecimal 1B 74 n Comments The following values can be used for n 0 Selects italics 1 Selects Epson Character Graphics Selects the character table used by codes 128 255 Selecting Epson Character Graphics does not disable italic printing Italic printing can still be selected by ESC 4 Duplicates t...

Page 96: ...cized ESC 5 Format ASCII code ESC 5 Decimal 27 53 Hexadecimal 1B 35 Comments Cancels the mode selected by ESC 4 Cancel Italic Mode ESC R Select an International Character Set Format ASCII code ESC R n Decimal 27 82 n Hexadecimal 1B 52 n Comments See Appendix B for full nf i ormation on international character sets The following values can be used for n 0 USA 5 Sweden 9 Norway 1 France 6 Italy l0 D...

Page 97: ...urrently selected mode ESC Copy ROM into RAM Format ASCII code ESC NUL NUL NUL Decimal 27 58 0 0 0 Hexadecimal 1B 3A 00 00 00 Comments This code copies the characters in the ROM into RAM so that specific characters can be redefined ESC Select User defined Set Format ASCII code ESC n Decimal 27 37 n Hexadecimal 1B 25 n Comments ESC is required to define the character set The following values can be...

Page 98: ...55 Hexadecimal 1B 37 Comments This code causes codes 128 through 159 to be treated as control codes This is the default ESC I Printable Code Area Expansion Format ASCII code ESC I n Decimal 27 73 n Hexadecimal 1B 49 n Comments ASCII codes 0 to 31 and 128 to 159 are usually not printable These codes become printable upon input of the ESC I code if n 1 which allows the use of these codes for user de...

Page 99: ...Double density Graphics Mode Format ASCII code ESC L n1 n2 Decimal 27 76 n1 n2 Hexadecimal 1B 4C n1 n2 Comments Turns on eight pin low speed double density graphics mode 120 dots per inch The total number of columns nl n2 x 256 ESC Y Select High speed Double density Graphics Mode Format ASCII code ESC Y n1 n2 Decimal 27 89 n1 n2 Hexadecimal 1B 59 n1 n2 Comments Turns on eight pin high speed double...

Page 100: ...240 dots per inch The total number of columns nl n2 x 256 ESC Select Graphics Mode Format ASCII code ESC m n1 n2 Decimal 27 42 m n1 n2 Hexadecimal 1B 2A m n1 n 2 Comments Turns on graphics mode m See the table below for details on the available modes The total number of columns n1 n2 x 256 Table A 2 Graphics Modes Adjacent dots cannot be printed in this mode A 34 Command Summary ...

Page 101: ...h is reassigned to a mode n 0 7 ESC Select 9 Pin Graphics Mode Format ASCII code ESC m n1 n2 Decimal 27 94 m n1 n2 Hexadecimal 1B 5E m n1 n 2 Comments Turns on 9 pin Graphics Mode For this command the variable m defines density of print 0 for single and 1 for double The total number of columns nl n2 x 256 This mode requires two data items for each column of print Command Summary A 35 ...

Page 102: ...tail Commands that Duplicate Epson Commands Printer Operation DC1 ESC U ESC 8 ESC 9 BEL Data Buffer Control CR CAN FF ESC C ESC C 0 ESC N ESC 0 LF ESC 0 ESC 1 ESC 3 VT ESC B Print Head Control BS HT Print Size Character Width Paper Feed Control SI ESC St SO ESC SO DC4 ESC W ESC E ESC F ESC G ESC H ESC SO ESC S1 ESC T ESC Graphics ESC K ESC L ESC Y ESC Z Note that IBM printer emulation mode graphic...

Page 103: ...ine state until the printer is turned off and back on or until it receives a DC1 code Vertical Motion ESC A Set n 72 inch Line Spacing Format ASCII code ESC A n Decimal 27 65 n Hexadecimal 1B 41 n Comments Sets the line spacing to n 72 of an inch This value is stored in memory until the printer receives the ESC 2 command to put it into effect The value of n must be from O 85 Command Summary A 37 ...

Page 104: ...m n 216 inch Line Feed Format ASCII code ESC J n Decimal 27 74 n Hexadecimal 1B 4A n Comments Advances the paper by one line at a spacing of n 216 of an inch The value of n must be from O 255 This command produces an immediate line feed but does not affect subsequent line spacing It does not produce a carriage return unless DIP switch 1 3 is OFF ESC 4 Format ASCII code ESC 4 Decimal 27 52 Hexadeci...

Page 105: ...n If the mode is off it does not This command duplicates the function of DIP switch 2 4 Horizontal Motion ESC X Set Left and Right Margins Format ASCII code ESC X n1 n2 Decimal 27 88 n1 n 2 Hexadecimal 1B 58 n1 n2 Comments The left margin column is set to n1 in the current pitch ignoring double wide and the right margin column is set to n2 The minimum distance between the two margins is l 2 inch T...

Page 106: ...he tab settings change if the character pitch is changed except that double wide has no effect on the tab positions ESC R Restore Default Tab Settings Format ASCII code ESC R Decimal 27 82 Hexadecimal 1B 52 Comments Resets all vertical and horizontal tab settings set by ESC B and ESC D to their defaults Overall Printing Style ESC I Select Font Format ASCII code ESC I n Decimal 27 73 n Hexadecimal ...

Page 107: ... Elite Pitch ESC P Turn Proportional Mode On Off Format ASCII code ESC P n Decimal 27 80 n Hexadecimal 1B 50 n Comments The following values can be used for n 1 Mode is turned ON The characters 0 and 1 0 Mode is turned OFF can also be used The width of proportional characters varies from character to character Therefore a narrow letter like i receives less space than a wide letter like W The propo...

Page 108: ...27 91 64 n1 n2 m1 m2 m3 m4 Hexadecimal 1B 5B 40 n1 n2 m1 m2 m3 m4 Comments The following values must be used n1 4 n2 0 ml 0 and m2 0 The value of m3 affects both character height and line feed as shown below Char height Line feed Standard Double high Unchanged Standard Double high Unchanged Standard Double high Double The value of m4 selects the width of the characters 1 Standard 2 Double wide m3 ...

Page 109: ...et Format ASCII code ESC 6 Decimal 27 54 Hexadecimal 1B 36 Comments Selects the international character set Table 2 See the character set tables in Appendix B ESC 7 Select Standard Character Set Format ASCII code ESC 7 Decimal 27 55 Hexadecimal 1 B 37 Comments Selects standard character set Table 1 if international character set Table 2 has been previously selected See the character set tables in ...

Page 110: ... set The number of characters nl n2 x 256 See the character tables in Appendix B for the symbol set and the codes to use for data ESC Print One Character from Symbol Set Format ASCII code ESC c Decimal 27 94 c Hexadecimal 1B 5E c Comments Prints a single character c from the symbol set See the character tables in Appendix B for the symbol set and the codes to use for c A 44 Command Summary ...

Page 111: ...n all cases n4 the code of the first character to be defined n5 0 if the top 8 pins are used n5 128 for the bottom 8 n6 0 in all cases n7 through nk are the data numbers that define the characters with 11 data numbers for each character The data numbers for each character are determined as shown on the grid for the Epson mode in Figure 5 5 To print a user defined character you must use ESC I which...

Page 112: ...al and the proportional width of each character Epson Mode The first half of the Epson mode table covers the standard ASCII character codes from 0 to 127 The remainder of the table shows two characters for each code one from the standard italic character table and one from the Epson character graphics table The Epson character graphics are selected by ESC t or DIP switch l 3 Where appropriate two ...

Page 113: ...UB 27 1B ESC 28 1C FS 29 1D GS 30 1E RS 31 1F US null start of heading start of text end of text end of transmission enquiry acknowledge bell backspace tab horizontally line feed tab vertically form feed carriage return shift out shift in data link escape device control 1 device control 2 device control 3 device control 4 negative acknowledge synchronous idle end of transmitted block cancel line e...

Page 114: ...P 12 5 8 12 12 12 12 5 6 6 12 12 7 12 6 10 0 12 1 8 2 12 3 12 4 12 5 12 6 12 7 12 8 12 9 12 6 6 10 12 10 12 64 40 65 41 66 42 67 43 68 44 69 45 70 46 71 47 72 48 73 49 74 4A 75 4B 76 4C 77 4D 78 4E 79 4F 80 50 81 51 82 52 83 53 84 54 85 55 86 56 87 57 88 58 89 59 90 5A 91 5B 92 5C 93 5D 94 5E 95 5F 12 A 12 B 12 C 12 D 12 E 12 F 12 G 12 H 12 I 8 J 11 K 12 L 12 M 12 N 12 0 12 P 12 Q 12 R 12 S 12 T 1...

Page 115: ...6 103 67 104 68 105 69 106 6A 107 6B 108 6C 109 6D 110 6E 111 6F 112 70 113 71 114 72 115 73 116 74 117 75 118 76 119 77 120 78 121 79 122 7A 123 7B 124 7C 125 7D 126 7E 127 7F 5 12 11 11 11 12 10 11 11 8 10 10 8 12 11 12 11 11 11 12 11 12 12 12 10 12 10 9 9 9 12 DEL B 4 Character Tables ...

Page 116: ...8C FF 141 8D CR 142 8E SO 143 8F SI 144 90 DLE 145 91 DC1 146 92 DC2 147 93 DC3 148 94 DC4 149 95 NAK 150 96 SYN 151 97 ETB 152 98 CAN 153 99 EM 154 9A SUB 155 9B ESC 156 9C FS 157 9D GS 158 9E RS 159 9F US 12 12 11 12 10 11 12 12 12 11 12 11 12 11 11 11 12 12 12 11 12 11 8 10 10 11 8 8 12 12 12 12 12 12 12 12 12 12 10 12 10 11 10 11 11 11 11 11 12 11 12 12 12 12 11 11 12 12 12 12 12 12 11 12 Char...

Page 117: ... 173 AD 174 AE 175 AF 176 BO 177 Bl 178 B2 179 B3 180 B4 181 B5 182 B6 183 B7 184 B8 185 B9 186 BA 187 BB 188 BC 189 BD 190 BE 191 BF SP 12 10 10 12 11 12 12 5 8 8 12 12 8 12 10 10 12 9 12 12 12 12 11 12 12 11 8 9 10 11 9 11 12 11 8 10 10 12 11 11 11 12 12 12 12 11 12 12 12 11 12 12 12 12 12 12 12 12 5 10 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 B 6 Character Tables ...

Page 118: ... 202 CA 203 CB 204 CC 205 CD 206 CE 207 CF 208 D0 209 D1 210 D2 211 D3 212 D4 213 D5 214 D6 215 D7 216 D8 217 D9 218 DA 219 DB 220 DC 221 DD 222 DE 223 DF 12 12 12 12 12 12 12 12 12 10 12 12 10 12 12 12 12 12 12 12 12 12 11 12 12 12 12 11 7 11 10 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 Character Tables B 7 ...

Page 119: ...F 240 F0 241 Fl 242 F2 243 F3 244 F4 245 F5 246 F6 247 F 7 248 F8 249 F9 250 FA 251 FB 252 FC 253 FD 254 FE 255 FF 5 11 11 11 12 11 12 11 11 9 10 11 9 11 10 11 11 11 10 11 10 11 10 12 12 11 12 10 9 10 12 12 12 11 10 12 10 11 11 12 10 12 12 12 12 12 10 10 12 12 10 10 12 12 12 12 8 6 6 12 8 8 8 12 12 11 12 12 12 12 12 12 12 12 12 11 12 12 10 12 12 12 10 10 12 12 12 12 8 6 6 12 8 8 8 12 B 8 Character...

Page 120: ...ts together with the number to use with ESC R to select each one The DIP switch combinations to select any of the first eight character sets are in Appendix D Note that once a character set has been selected italic versions of these characters can also be printed by using the ESC 4 command Table B 2 Epson international characters 35 36 64 91 92 93 94 96 123 124 125 126 0 USA 1 France 2 Germany 3 U...

Page 121: ...cters Widths Characters Widths Normal Italic Normal Italic 12 11 12 11 11 11 10 11 8 8 8 8 12 12 5 10 12 11 12 12 11 12 12 12 12 12 12 12 12 11 11 11 10 12 11 11 12 12 12 12 12 12 12 11 8 9 12 12 12 12 12 12 12 11 10 11 11 12 12 12 12 11 12 12 B 10 Character Tables ...

Page 122: ...er setting of these three switches You can also switch between the two tables using the ESC 6 and ESC 7 commands To print characters from the symbol set use either the ESC command or ESC For example to print the symbol 1 in BASIC the command is as follows LPRINT CHR 27 CHR 20 If you use ESC A or ESC to send a non printable code a blank is printed All three tables are the same for codes from 32 to ...

Page 123: ...7 11 18 12 19 13 20 14 21 15 22 16 23 17 24 18 25 19 26 1A 27 1B 28 1C 29 1D 30 1E 31 1F NUL SOH STX ETX EOT ENQ ACK BEL BS HT LF VT FF CR SO SI DLE DC1 DC2 DC3 DC4 NAY SYN ETB CAN EM SUB ESC FS GS RS US NUL SOH STX BEL BS HT LF VT FF CR SO SI DLE DC1 DC2 DC3 DC4 SYN ETB CAN EM SUB ESC FS GS RS US 12 12 12 12 10 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 B 1 2...

Page 124: ...5 II 8 12 12 12 12 6 6 1 6 12 12 6 12 6 10 0 12 1 8 2 12 3 12 4 12 5 12 6 12 7 12 8 12 9 12 6 6 10 12 10 10 64 40 65 41 66 42 67 43 68 44 69 45 70 46 71 47 72 48 73 49 74 4A 75 4B 76 4C 77 4D 78 4E 79 4F 80 50 81 51 82 52 83 53 84 54 85 55 86 56 87 57 88 58 89 59 90 5A 91 5B 92 5C 93 5D 94 5E 95 5F 12 A 12 B 12 C 12 D 12 E 12 F 12 G 12 H 12 I 8 J 12 K 12 L 12 M 12 N 12 0 12 P 12 Q 12 R 12 S 12 T 1...

Page 125: ...6 6A 107 6B 108 6C 109 6D 110 6E 111 6F 112 70 113 71 114 72 115 73 116 74 117 75 118 76 119 77 120 78 121 79 122 7A 123 7B 124 7C 125 7D 126 7E 127 7F 6 a 12 b 11 c 11 d 11 e 12 f 12 g 11 h 12 i 8 j 8 k 10 1 8 m 12 n 12 o 11 p 11 q 11 r 11 s 12 t 10 u 12 v 12 w 12 x 10 y 12 z 10 9 4 9 12 12 1 B 14 Character Tables ...

Page 126: ...EL 136 88 BS 137 89 HT 138 8A LF 139 8B VT 140 8C FF 141 8D CR 142 8E SO 143 8F SI 144 90 DLE 145 91 DC1 146 92 DC2 147 93 DC3 148 94 DC4 149 95 NAK 150 96 SYN 151 97 ETB 152 98 CAN 153 99 EM 154 9A SUB 155 9B ESC 156 9c FS 157 9D GS 158 9E RS 159 9F u s 12 12 12 12 12 12 12 12 12 12 12 9 10 8 12 12 12 12 12 11 11 11 12 12 11 11 12 12 12 12 12 12 Character Tables B 15 ...

Page 127: ...64 A4 165 A5 166 A6 167 A7 168 A8 169 A9 170 AA 171 AB 172 AC 173 AD 174 AE 175 AF 176 B0 177 Bl 178 B2 179 B3 180 B4 181 B5 182 B6 183 B7 184 B8 185 B9 186 BA 187 BB 188 BC 189 BD 190 BE 191 BF 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 1 B 16 Character Tables ...

Page 128: ...96 C4 197 C5 198 C6 199 C7 200 C8 201 C9 202 CA 203 CB 204 CC 205 CD 206 CE 207 CF 208 DO 209 D1 210 D2 211 D3 212 D4 213 D5 214 D6 215 D7 216 D8 217 D9 218 DA 219 DB 220 DC 221 DD 222 DE 223 DF 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 Character Tables B 17 1 ...

Page 129: ...3 228 E4 229 E5 230 E6 231 E7 232 E8 233 E9 234 EA 235 EB 236 EC 237 ED 238 EE 239 EF 240 F0 241 F1 242 F2 243 F3 244 F4 245 F5 246 F6 247 F7 248 F8 249 F9 250 FA 251 FB 252 FC 253 FD 254 FE 255 FF 12 12 11 12 12 12 12 11 12 12 12 12 12 12 10 12 12 12 10 10 12 12 12 11 8 6 6 12 10 8 8 12 B 1 8 Character Tables ...

Page 130: ...E lights should be on Make sure that the printer and computer are connected Be certain you are using the correct cable Make sure the printer is connected to only one interface If the program you are using allows you to choose between screen output and printer output see that you have selected printer output If the printer still does not print try the self test prccedure see Chapter 1 If the self t...

Page 131: ...DIP switches l 6 to l 8 If they are graphics characters see that your software is correctly installed and that you have correctly set DIP switches 1 3 and 1 4 See Chapter 2 for specific instructions on loading paper Regular gaps appear in printouts Self test pattern is garbled Check the settings of DIP switches 2 l and 2 3 to ensure that you ve selected the correct paper size and that skip over pe...

Page 132: ...raphics data Turn off the printer and turn it back on again to reset Data Dump Mode The T 750 has a special feature that makes it easy for experienced printer users to find the causes of problems The hexadecimal hex or data dump mode gives a printout of exactly what codes reach the printer Enter this mode by turning on the printer while holding down the FORM FEED and LINE FEED buttons at the same ...

Page 133: ...tion ESC ESC R 0 ESC t l ESC 6 DC2 ESC P ESC p 0 BEL Initialize printer Select USA character set Select Epson Character Graphics Printable code expansion Cancel condensed mode Select pica Cancel proportional Sound beeper If you find codes in your data dump that you did not enter in your program or codes you did not expect your application program to send your computer may be changing the codes bef...

Page 134: ... printer or tractor cover in place to prevent any water from getting inside the printer Do not use a hard brush or cloth and never use alcohol or a thinner to clean the printer because it could damage the print head and the case Do not spray the inside of the printer with oil unsuitable oils can damage the mechanism If lubrication is needed call the Epson toll free number for the location of the n...

Page 135: ...enter for a replacement head The print head catalog number is 8731 To replace the head follow these steps 1 Turn the printer OFF 2 If the printer has been recently used the print head will be hot Let it cool 3 Open the printer or tractor cover 4 Remove the ribbon 5 Release the head lock levers See Figure C l Figure C I Replacing the print head C 6 Problem Solving and Maintenance ...

Page 136: ...int head in the head mount and move the head lock levers back to their original positions Now your new print head is ready to use Transporting the Printer There are several precautions you should take when packing the printer for transportation l Remove the ribbon l Move the print head to the right pull the paper bail forward and replace the print head protector and the locking tabs Problem Solvin...

Page 137: ...emove the paper rest and paper guide and pack them separately l Fix the tractor cover in place with tape l Pack the printer in the original foam packing supports and box C 8 Problem Solving and Maintenance ...

Page 138: ...ne spacing is set to l 6 inch horizontal tabs are set at every eighth position and vertical tab channel 0 is selected l The page length and skip over perforation are set according to DIP switches 2 1 and 2 3 and the top of form position is set to the current line l The ROM characters are selected and the Epson mode character table and international character set are reset according to DIP switches...

Page 139: ... 1 is the switch at the far left side and the one at the far right is DIP switch 2 4 You can easily reset the switches with a thin pointed object such as a small screwdriver or the cap of a ballpoint pen Note When you change a DIP switch setting turn off the power reset the switch or switches then turn on the power again The printer checks and recognizes new settings only at the time the power is ...

Page 140: ...ed after carriage return CR LF CR only Note The factory setting for all switches except l 6 l 7 and l 8 is OFF International Character Sets Thirteen international character sets are available in Epson mode Eight of these are selected by DIP switches l 6 to l 8 and the remaining five Japan Norway Denmark II Spain II and Latin America can be selected with the ESC R command which is described in the ...

Page 141: ...le D 3 International settings E son mode character set USA French German UK Danish Swedish Italian Spanish DIP switch settings 1 6 1 7 O N ON O N O N O N OFF ON OFF ON ON OFF OFF OFF ON ON OFF ON OFF OFF OFF ON OFF OFF OFF IBM printer emulation mode Standard International International International International International International International Defaults and DIP Switches ...

Page 142: ...logic seeking for text printing Unidirectional for graphics and available by software command for text Character sizes All except superscript and subscript are 3 1 mm high The widths and characters per inch CPI are given below Mode Width mm CPI Mode Width mm CPI Pica 2 1 10 Condensed Pica 1 05 17 Elite 2 1 12 Condensed Elite 1 05 20 Line spacing l 6 inch or programmable in increments of 1 216th of...

Page 143: ... dots character Dimensions and Weight Height including tractor 5 6 in Width with paper feed knob 21 3 in Depth 13 4 in Weight including tractor 22 2 lbs Electrical Voltage 120V AC Consumption 120 VA Frequency 49 5 Hz 60 5 Hz Insulation resistance 10 Mohms between AC power line and chassis Dielectric strength Can withstand 1 kV rms applied between AC line and chassis for 1 minute or 1 25 kV rms for...

Page 144: ...and signals Signal Return Pin Pin Signal Direc tion 1 1 9 STROBE I N 2 20 DATA 1 I N 3 21 DATA 2 I N 4 22 DATA 3 I N 5 23 DATA 4 I N 6 24 DATA 5 I N 7 2 5 DATA 6 I N 8 26 DATA 7 I N 9 27 DATA 8 I N 10 28 ACKNLG Text Description STROBE pulse to read data in Pulse width must be more than 0 5 microseconds at the receiving terminal These signals represent information of the 1st to 8th bits of parallel...

Page 145: ...Table E l Pins and signals continued Notes 1 The column heading Direction refers to the direction of signal flow as viewed from the printer 1 E 4 Technical Specifications ...

Page 146: ... 2 microseconds 4 Data transfer must be carried out by observing the ACKNLG or BUSY signal Data transfer to this printer can be carried out only after receipt of the ACKNLG signal or when the level of the BUSY signal is LOW Data Transfer Sequence Interface timing Figure E l shows the timing for the parallel interface Printing enabled disabled signals and control conditions Table E 2 on the next pa...

Page 147: ...HIGH HIGH LOW PULSED EA CHAR normal cond ON LINE HIGH DC1 RECV D HIGH HIGH LOW PULSED EA CHAR ENABLED ON LINE HIGH DC3 RECV D HIGH HIGH LOW PULSED EA CHAR DISABLED OFF LINE HIGH LOW DC1 DC3 no effect no effect LOW HIGH NOT GENERATED DISABLED Even though printing is disabled data characters are received and acknowledged since the printer is looking for another DC1 character which would allow it to ...

Page 148: ...switch each carriage return code CR is automatically accompanied by a line feed LF code baud rate A measure of the speed of data transmission Usually equivalent to bits per second bidirectional printing Printing in which the print head goes from left to right only on every other line On the other lines it goes from right to left This increases the speed of printing because the head prints in both ...

Page 149: ...r codes which are called control codes These control codes perform such functions as sounding the beeper and performing a carriage return or line feed cut sheet feeder CSF An optional detachable device which automatically feeds single sheets of paper into the printer data dump A troubleshooting feature When the printer is in data dump mode each code that it receives is printed in hexadecimal notat...

Page 150: ...mphasized printing A way of producing darker characters Each character is printed twice with the second slightly to the right of the first Epson Extended Graphics The Epson Extended Graphics character table contains international accented characters Greek characters and character graphics for printing lines corners and shaded areas ESC escape A special control code used to begin most printer comma...

Page 151: ...ed line feed A control code and a panel button that advances the paper one line space memory The printer like a computer has a memory When you print a file from a computer the contents of the file are transferred quickly from the computer s memory to the printer s memory The printer then prints information from its own memory at a much slower rate This way of printing frees the computer to do othe...

Page 152: ...umber between 0 and 255 can be expressed by an eight bit binary number on line When the printer is on line it is in communication with the computer connected to it paper out sensor A small switch behind the platen that sends a signal when it is not in contact with paper causing the PAPER OUT light to go on parallel interface See interface parity Parity is a method for a computer and printer to che...

Page 153: ...ration of the printer When the self test is run the printer prints out its current DIP switch settings and the characters that are stored in its ROM 10 pitch A pitch with 10 characters per inch This is often the standard or default pitch Also referred to as pica top of form position The position on the paper which the printer recognizes as the first printable line For single sheets this is the pos...

Page 154: ...0 4 4 5 13 Character sets 5 13 18 tables B l 18 Choosing a place for printer l 2 3 Cleaning C 5 Commands A 1 45 Commands in numerical order A 4 6 by function A 7 45 Computer printer communications 3 2 3 connections 1 17 Condensed mode 1 14 Continuous feed paper See Paper Control keys A 3 Control panel l 12 16 Cover printer 2 5 tractor 2 6 Cut sheet feeder See Automatic sheet feeder D Data Dump C 3...

Page 155: ...l Installing software 3 1 7 Interface parallel 1 17 E 3 6 International characters B 5 16 D 3 4 Italics 4 5 K Knob paper feed 1 2 l 1 1 L Levers 2 2 Lights 1 13 LINE FEED 1 13 Loading paper See Paper Locating printer l 2 3 choosing 2 1 length 2 1 loading continuous feed l 6 10 2 6 loading single sheets 24 size 2 l Paper bail l 7 Paper feed knob 1 2 l l 1 Paper guide l 10 2 2 PAPER OUT light 1 14 P...

Page 156: ...est 1 11 12 Setting up l l 20 Single sheet See Paper Skip over perforation D 3 Slashed zero D 3 Solving problems 2 C 1 3 Specifications E l 6 Spreadsheets 3 4 6 Subscript 4 3 4 Superscript 4 3 4 T Technical specifications E 1 6 Top of form 1 11 Tractor installing 2 6 7 removing 2 2 See also Paper continuous feed Transporting the printer C 7 Troubleshooting C l 3 U Underlining 4 3 4 User defined ch...

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