Instruction/ maintenance manual of the product T-750 Epson
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User’s Manual.
FCC COMPLIANCE STATEMENT FOR AMERICAN USERS This equipment generates and uses radio frequency energy and if not installed and used properly, that is, in strict accordance with the manufacturer’s instructions, may cause interference to radio and television reception.
Contents Introduction 2 About This Manual 2 Where to Get Help Chapter 1 Setting Up Your T-750 Printer l-1 Unpacking Your Printer 1-2 Selecting the Right Location 1-3 Installing the Ribbon 1-6 Loading .
Chapter 4 T-750 Printer Features 4-1 Quality and Fonts 4-2 Print Size and Character Width 4-2 Pitches and Proportional Spacing 4-3 Special Effects and Emphasis 4-4 Using Different Character Sets 4-5 P.
Appendix D Defaults and DIP Switches D- 1 Default and Initialization Settings D-2 DIP Switch Settings D-3 International Character Sets Appendix E Technical Specifications E-1 Printing E-l Paper E-2 Me.
Introduction The ActionPrinter™ T-750 combines all the well-known virtues of previous Epson 9-pin printers with many features normally exclusive to costly 24-pin printers. l The speed of draft printing is 240 characters per second in draft elite and 200 in draft pica.
About This Manual To make it easier to set up your new T-750, this manual includes a lo-step guide. This guide, which is printed on the inside of the back flap, summarizes the first chapter’s setting up instructions.
Chapter 1 Setting Up Your T-750 Printer Setting up your new T-750 is easy. Simply follow the steps in this chapter. 1 Unpacking Your Printer First, 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.
WARNING The printer is protected by a print head protector, a platen protector and two locking tabs during shipping. These protective items must be removed before you turn on the printer. Follow the steps in Figure 1-2. Also, you should install the paper feed knob.
l Place the printer or printer stand on a solid and level foundation. Avoid setting it on carpet or on unstable surfaces such as chairs. l Use a grounded outlet-one that has three holes to match the power plug on the printer. Don’t use an adapter plug.
WARNING The power must be OFF w h en you move the print head. Moving the print head when the power is ON may damage your printer. If you’ve been using your printer just before changing the ribbon cartridge, be careful not to touch the print head because it becomes hot during use.
Figure 1-4. Installing the ribbon cartridge Figure l-5. Positioning the ribbon Setting Up Your T-750 Printer 1-5.
Replacing the ribbon... When buying new ribbon cartridges for the T-750, be sure you get a ribbon specifically for Epson T-750 or FX series printers. Ribbon cartridges for other Epson printers, such as the L-1000 or LQ series, closely resemble T-750 ribbons, but their use can cause poor print quality.
Figure 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.
Now you are ready to load the continuous-feed paper. Just follow the steps below: 1. Using Figure 1-7 as a guide, pull the locking levers on the pin-feed holders forward so that you can move the holders to the left and right. Figure 1-7. Pin-feed locking levers 2.
Figure 1-8. Open pin-feed cover 4. Guide the paper into the paper slot, and push it through until it comes up between the ribbon guide and the platen. (Moving 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.
6. Fit the right side of the paper into the right holder, moving the holder as needed to match the width of the paper. 7. Close the right cover, making sure the paper has no dips or wrinkles and lock the right holder in place. Now that you have loaded the continuous-feed paper, prepare the printer for printing.
3. With the printer turned OFF, advance the paper with the paper feed knob on the right side of the printer until the first row of perforations is about even with the top of the ribbon. (See Figure 1-11.) Figure 1-11. Setting top of form This is the top of form position.
5 Turning On the Printer Before plugging in the power cord, see that the power switch near the back of the left side of the printer is turned off; then plug the power cord into a properly grounded socket. WARNING Before turning on the printer, be absolutely sure you have removed all packing materials.
The three buttons nearest the front of the printer control advancing the paper and communication with the computer. The four indicator lights show when the printer is turned on and when it is ready to use. The buttons There are three large buttons on the control panel.
PAPER OUT This comes on when the printer is out of paper. Also on the control panel are two touch switches that let you choose the print style and size. These are the SelecType buttons, which are described in the next section. 7 SelecType The SelecType feature consists of two buttons on the control panel.
want to turn off either mode, press its button again. It beeps once and the indicator light turns off to show that the mode is cancelled. As you can see, SelecType makes it easy to choose either NLQ or condensed, and the indicator lights always tell you which modes you’ve selected.
Note Also remember that control codes in your document will override the SelecType settings. Therefore, if you have a code for NLQ in your document and you press the DRAFT SelecType button, your printing will still be in NLQ.
To run the same test in the draft mode, hold down the LINE FEED button instead of the FORM FEED button while you turn the printer on. The T-750 cannot print a draft self test, however, if the NLQ DIP switch is on. Therefore, if the Print Quality line of the self test printout says NLQ, you cannot print a draft test without changing a DIP switch.
10 Choosing the Operating Mode with DIP Switches The T-750 has 12 switches that allow you to change many of the printer’s settings to suit your individual needs. You may need to change one or two of them now. These switches, known as DIP (Dual In-line Package) switches, are in the back of the printer.
Before you change any DIP switch settings, turn the printer around to give you easy access to the switches. Then you can easily turn the switches on and off with a thin pointed object, such as a small screwdriver or the cap of a ballpoint pen. The switches are ON when they are UP and OFF when they are DOWN.
DIP switch 14 controls the choice of operating modes. Turning the switch OFF selects Epson mode, and turning it ON selects IBM printer emulation mode. The Epson character graphics set Half of the characters used by IBM PCs and compatibles are special character graphics and international characters.
Chapter 2 Choosing and Loading Paper The T-750 printer can accommodate many different sizes and types of paper, using either its automatic single-sheet loading feature or its adjustable tractor.
Before you load single-sheet paper the first time, you must prepare the printer by removing the tractor unit and installing the paper guide, as described in the next five steps. (If you have previously loaded continuous-feed paper, you have already done some of the steps.
5. Hold the paper guide above the printer. Insert the right hinge tab into the right tab slot, as shown 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).
Loading the paper Now you are ready to load single-sheet paper. Just follow the steps below: 1. Turn the printer ON first. Do not put the paper in the printer before you turn it on. 2. Push both the paper release lever and the paper bail lever toward the back of the printer.
5. Pull the paper bail lever forward. This makes the paper feed into the printer. 6. When the paper stops, push the paper bail lever back. 7. Hold the printer cover vertically and fit the notches in its front corners over the pins at the front of the printer case (as shown in Figure 24).
If the paper does not load If the platen (the black roller) turns but the paper does not load, remove the paper from the printer and try again, starting at Step 2. This time press the paper a little more firmly into place. If nothing happens at all, see that the printer is ON and that the ON LINE light is off.
Figure 2-5. Reinstalling the tractor unit Choosing and Loading Paper 2-7.
The Paper Thickness Lever You can adjust the T-750 to accommodate different thicknesses of paper. You need to do this 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.
If you want to change or check the lever, push it toward the platen (the black roller) until it stops. This is the first position. Then pull the lever toward you. You will feel three more click stops. The table below shows which position you should use.
Chapter 3 Using the T-750 with Application Programs Now that you’ve set up and tested the printer, you need to start using it with your application programs. Printer Selection Menus Most application programs let you specify the type of printer you’re using so that the program can take full advantage of the printer’s features.
A quick test After setting up your application program, print a sample document to be sure the program and the T-750 are communicating properly. If the document doesn’t print correctly, recheck the program’s printer selection and installation procedure.
The decimal system is the standard numbering system based on units of ten, using the numerals O-9. The hexadecimal, or hex, system is based on units of 16 and is often used by programmers. Instead of using only the numerals 0 through 9, the hex system also uses the letters A through F.
Check the manual for your word processor to see if you can place printer commands in your text. If this is possible, use the Command Summary (Appendix A) in this manual to find the command, and use the manual for your word processor to find how to assign the command.
Table 3-1. Characters per line T-750 Normal 136 Elite 163 Condensed 233 Condensed Elite 272 Therefore, if your spreadsheet asks the number of columns your printer can print, decide which mode you will use and supply the appropriate number from Table 3-1.
If you’re using the program’s print facility, recheck the T-750’s Command Summary to make sure you’re sending the correct commands. If you’re still having difficulty printing, check the troubleshooting section in your spreadsheet program’s manual or Appendix C of this manual.
Sending printer commands with BASIC You can send printer commands with any programming language. The examples in this manual are written in BASIC, because BASIC is included with most computer systems.
Chapter 4 T-750 Printer Features You can obtain many different printing effects with the T-750 printer, from arranging the printout on the paper to giving extra emphasis to particular words and phrases. This chapter shows you the features you may want to select with your software.
Print Size and Character Width To add greater variety to your documents, the T-750 has two pitches as well as proportional spacing and condensed, double-wide and double-high printing. All can be selected with a software command, and condensed can be selected with SelecType.
Another mode for headings and other special uses is double-high, which is shown below. This is double-high printing Because of its height you must leave a blank line above a line of double-high. Otherwise the double-high letters will overlap the letters on the previous line.
In double-strike mode, the T-750 prints each line twice, with the second slightly below the first. This makes the characters bolder. While NLQ is in use, however, double-strike is ignored because NLQ characters are already formed by two passes of the print head.
The other important change you can make to the standard character set is to change some characters for ones commonly used in other languages-chiefly European and Scandinavian-such as accented characters and symbols.
Chapter 5 Graphics and User-defined Characters The dot graphics mode allows your T-750 to produce pictures, graphs, charts, or almost any other pictorial material you can devise, and the user-defined .
If you use application software that produces graphics, all you need to know about dot graphics is how to use the software. If, on the other hand, you wish to do your own programming or merely wish to understand how the T-750 prints graphics, read on.
Dot patterns The T-750’s print head is able to print graphics in addition to text because graphic images are formed on the printer about the same way that pictures in newspapers and magazines are printed. If you look closely at a newspaper photograph, you can see that it is made up of many small dots.
To fire any one pin, you send its number. To fire more than one pin at the same time, add up the numbers of the pins and send the sum to the printer. Therefore, with these labels for the pins, you fire the top pin by sending 128. To fire the bottom pin, you send 1.
The graphics command format There are several different graphics commands giving different horizontal dot densities and printing speeds. Because the format is almost the same for all the commands, however, the example here keeps things simple by using only the single-density graphics command, ESC K.
Graphics data After receiving a graphics command such as ESC K nl n2, the printer prints the number of codes specified by nl and n2 as graphics data, no matter what codes they are. This means that you must be sure to supply exactly the right amount of graphics data.
WIDTH statements Some software (including most versions of BASIC) automatically inserts carriage return and line feed codes after every 80 or 130 characters. This is usually no problem with text, but it can spoil your graphics. Two extra columns of graphics are printed in the middle of the ones you send, and are left over and printed as text.
1. The computer is prevented from adding any extra characters by the WIDTH statement (line 100). 2. The line spacing is changed to 8/72 of an inch-the height of the dot patterns used in the program (line 110). 3. The program goes through the graphics commands the required number of times (lines 120 and 170).
Table 5-1. Graphics modes *Adjacent dots cannot be printed in this mode. Modes 4-7 in the table are special modes that alter the horizontal density to give proportions of a computer monitor (the CRT modes), or to match the vertical density so as to give round circles (the plotter modes).
A little experimentation should tell you whether the reassigning code can improve your graphics printouts. Designing Your Own Graphics This section takes you through the development of a graphics program. The example is not especially complicated, but it does include the same steps you would use for a more complex figure.
Now look at the high-speed double-density design in Figure 5-3. It should point you in the right direction for your own work. Figure 5-3. Arrow design After plotting the dots on a grid, you calculate the numbers for each pin pattern by dividing the design grid into separate print lines.
The numbers for the second line were calculated in the same way. Once the numbers for the pin patterns are calculated, they are put in the program in DATA statements, separated by commas. The program works in a similar way to the last example. This time it selects 7/72-inch line spacing because only seven pins are used.
User-defined Characters The T-750 has a command that allows you to define and print characters of your own design. You can design an entirely new alphabet or typeface, create mathematical or scientific symbols, or create graphic patterns to serve as building blocks for larger designs.
Figure 5-5 uses the top eight, but you can also use the bottom eight by using the grid on the right as explained later in this section. Once the character is planned on the grid, you simply add the pin values for each column together, just as you do for graphics.
Following the specification of the range of characters to be defined in this command is one number (al) that specifies the width of the character and whether it uses the top eight pins or the bottom eight pins. The last part of the character definition is the actual data that defines the dot patterns for each column of each character.
Run the program to see the printout below: As you can see, both sets of characters (the original ROM characters that the printer normally uses and the user-defined character set) remain in the printer available for your use.
Note This command will cancel any user-defined characters you have already created. You must send this command to the printer before you define characters. Specifying the width and height The example program uses 136 for al (in line 130 of the definition program), but you can use other values.
The sample below shows the heart character printed in two different styles. Other considerations Keep in mind that user-defined characters are stored in RAM, which is not permanent. Whenever the printer power is turned off or your computer sends an initialization (INIT) signal, all of the user-defined characters are lost.
Appendix A Command Summary This appendix lists and describes all the commands, both Epson (ESC/P) mode and IBM printer emulation mode, available on the T-750. The first part of this appendix lists all commands in numerical order and gives the page number where each is fully described.
For the following commands that use only 0 or 1 for the variable, either the ASCII codes 1 and 0 or the characters 1 and 0 can be used: ESC S , ESC U, ESC X , ESC p, ESC W, ESC S, ESC - , and ESC % Fo.
Control key chart Some application programs can use control key codes for decimal values O-27. The table below gives you the proper values. The Control Key column indicates that you press the control key at the same time you press the key for the letter or symbol in that column.
Commands in Numerical Order This section lists all the T-750 commands, with their decimal and hexadecimal values. The numbers in the columns on the right are the paged numbers in this appendix where a complete description of the command can be found.
ESC / ESC 0 ESC 1 ESC 2 ESC 2 ESC 3 ESC 4 ESC 4 ESC 5 ESC 5 ESC 6 ESC 6 ESC 7 ESC 7 ESC 8 ESC 9 ESC : ESC : ESC < ESC = ESC = ESC > ESC ? ESC @ ESC A ESC A ESC B ESC C ESC CO ESC D ESC E ESC F E.
ESC J 74 4A Perform n/216-inch line feed A-16 A-38 ESC K 75 4B Select singledensity graphics A-33 A-33 ESC L 76 4C Select double-density graphics A-33 A-33 ESC M 77 4D Select elite pitch A-23 ESC N 78.
Epson (ESC/P) Commands The following section lists and describes all the Epson (ESC/P) commands. Printer Operation Initialization ESC @ Initialize Printer Format: ASCII code: ESC @ Decimal: 2 64 Hexadecimal: 1B 40 Comments: Resets the printer mode and clears the buffer of printable data on the print line preceding the command.
DC3 Deselect Printer Format: ASCII code: DC3 Decimal: 19 Hexadecimal: 1 3 Comments: Puts the printer into the deselected state until select printer code (DCl) is received.
ESC U Turn Unidirectional Mode On/Off Format: ASCII code: ESC U n Decimal: 27 85 n Hexadecimal: 1B 55 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.
ESC EM Turn Automatic Sheet Feed Mode On/Off Format: ASCII code: ESC EM n Decimal: 27 25 n Hexadecimal: 1B 19 n Comments: The following values can be used for n: 4: Mode is turned ON. 0: Mode is turned OFF. The variables are the characters “0” (48 decimal or 30 hex) and “4” (52 decimal or 34 hex).
ESC > Set MSB to 1 Format: ASCII code: ESC > Decimal: 27 62 Hexadecimal: 1B 3E Comments: Sets the 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 >.
Data Control CR Format: ASCII code: C R Decimal: 13 Hexadecimal: 0 D Carriage Return Comments: Prints the data in the buffer and returns the print position to the left margin. A line feed may be added if DIP switch 24 is ON or the AUTO PEED XT line on the parallel interface is held LOW.
Vertical Motion Form feeding FF Form Feed Format: ASCII code: Decimal: Hexadecimal: FF 12 0C Comments: Prints the data in the print buffer and advances the paper to the top of the next form according to the current page length.
ESC N Set Skip-over-perforation Format: ASCII code: ESC N n Decimal: 27 78 n Hexadecimal: 1B 4E n Comments: The variable n is the number of lines skipped between the last line printed on one page and the first line on the next page.
ESC 0 Select 1/84-inch Line Spacing Format: ASCII code: ESC 0 Decimal: 27 48 Hexadecimal: 1B 30 Comments: Sets the line spacing to l/8 of an inch for subsequent line feed commands.
ESC 3 Select n/216-inch Line Spacing Format: ASCII code: ESC 3 n Decimal: 27 51 n Hexadecimal: 1B 33 n Comments: Sets the line spacing to n/216 of an inch for subsequent line feed commands. The “3” is the character three and not ASCII code 3. The value of n must be from 0-255.
Vertical tabbing VT Tab Vertically Format: ASCII code: VT Decimal: 11 Hexadecimal: 0B Comments: Advances the paper to the next tab setting in the channel selected by ESC /. If no channel has been selected, channel 0 is used. If no vertical tabs have been selected, the paper advances one line.
ESC / Select Vertical Tab Channel Format: ASCII code: ESC / c Decimal: 27 47 c Hexadecimal: 1 B 2F c Comments: This command is used to select the vertical tab channel, with the value of c from O-7. All subsequent VT commands use the channel selected by this command.
Print head movement BS Format: ASCII code: B S Decimal: 8 Hexadecimal: 0 8 Backspace Comments: Prints out data in the print buffer, then moves the print position one space to the left. Backspacing can be performed up to, but not beyond, the left margin setting.
ESC Set Relative Position Format: ASCII code: ESC n1 n 2 Decimal: 27 92 n1 n 2 Hexadecimal: 1B 5C n1 n2 Comments: Determines the position (relative to the current position) at which printing of following data will start. To find n1 and n2, first calculate the displacement required in l/120ths of an inch.
ESC D Set Horizontal Tabs Format: ASCII code: ESC D n1 n2 . . . NUL Decimal: 27 68 n1 n2 . . . 0 Hexadecimal: 1 B 44 n1 n2 . . . 00 Comments: This command allows setting of up to 32 horizontal tabs, which are entered as n1, n2, n3, etc. (from 1-137) with the NUL character or any value less than the previous one terminating the command.
ESC ! Master Select Format: ASCII code: ESC ! n Decimal: 27 33 n Hexadecimal: 1B 21 n Comments: Selects any valid combination of the modes in the table below. The variable n is determined by adding together the values of the desired modes from the table.
ESC M Select Elite Pitch Format: ASCII code: ESC M Decimal: 27 77 Hexadecimal: 1B 4D Comments: Selects elite pitch (12 characters per inch). ESC p Turn Proportional Mode On/Off Format: ASCII code: ESC p n Decimal: 27 112 n Hexadecimal: 1B 70 n Comments: The following values can be used for n: 1: Mode is turned ON.
ESC SI Select Condensed Mode Format: ASCII code: ESC SI Decimal: 27 15 Hexadecimal: 1 B OF Comments: Duplicates the SI command. DC2 Cancel Condensed Mode Format: ASCII code: DC2 Decimal: 18 Hexadecimal: 12 Comments: Cancels condensed printing set by SI, ESC SI, SelecType, or DIP switch l-l.
DC4 Cancel Double-wide Mode (one line) Format: ASCII code: DC4 Decimal: 20 Hexadecimal: 1 4 Comments: Cancels one-line double-wide printing selected by SO or ESC SO, but not double-wide printing selected by ESC W or ESC !.
Print Enhancement ESC E Select Emphasized Mode Format: ASCII code: ESC E Decimal: 27 69 Hexadecimal: 1B 45 Comments: Makes text bolder by printing each dot twice, with the second dot slightly to the right of the first.
ESC H Cancel Double-strike Mode Format: ASCII code: ESC H Decimal: 27 72 Hexadecimal: 1B 48 Comments: Turns off the double-strike mode selected by ESC G.
ESC - Turn Underlining Mode On/Off Format: ASCII code: ESC - n Decimal: 27 45 n Hexadecimal: 1B 2D 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.) This mode provides continuous underlining, including spaces.
ESC SP (space) Set Intercharacter Space Format: ASCII code: ESC SP n Decimal: 27 32 n Hexadecimal: 1B 20 n Comments: Sets the amount of space added to the right of each character, in addition to the space already allowed in the design of the character.
ESC 4 Select Italic Mode Format: ASCII code: ESC 4 Decimal: 27 52 Hexadecimal: 1B 34 Comments: Causes characters from the italic character set to be printed. This command is valid even if the Epson Character Graphics set has been selected by ESC t or the DIP switch 1-3, but character graphics cannot be italicized.
User-defined Characters Note: See Chapter 5 for sample programs and full information on this topic. ESC & Define User-defined Characters Format: ASCII code: ESC & NUL d1 d2 . . . dn Decimal: 27 38 0 d1 d2 . . . dn Hexadecimal: 1B 26 00 d1 d2 .
ESC 6 Printable Code Area Expansion Format: ASCII code: ESC 6 Decimal: 27 54 Hexadecimal: 1B 36 Comments: Enables the printing of codes 128 through 159 (decimal) as characters, not control codes. This allows the use of these characters for user-defined characters.
Graphics Note: See Chapter 5 for sample graphics programs. ESC K Select Single density Graphics Mode Format: ASCII code: ESC K n1 n2 Decimal: 27 75 n1 n2 Hexadecimal: 1B 4B n1 n2 Comments: Turns on eight-pin single-density graphics mode (60 dots per inch).
ESC Z Select Quadruple-density Graphics Mode Format: ASCII code: ESC Z n1 n2 Decimal: 27 90 n1 n2 Hexadecimal: 1B 5A n1 n2 Comments: Turns on eight-pin quadruple-density graphics mode (240 dots per inch). The total number of columns = nl + (n2 x 256).
ESC ? Reassign Graphics Mode Format: ASCII code: ESC ? s n Decimal: 27 63 s n Hexadecimal: 1 B 3F s n Comments: Changes one graphics mode to another. The variable s is a character (K, L, Y or Z), w hich is reassigned to a mode n (0-7).
IBM Printer Emulation Mode Commands The Epson mode and the IBM printer emulation mode share many of the same commands. Therefore, this part of the summary merely lists and does not describe the commands already described in the Epson mode command summary.
Commands that Are Different from Epson Commands Printer Operation ESC Q22 Deselect Printer Format: ASCII code: ESC Q SYN Decimal: 27 81 22 Hexadecimal: 1 B 51 16 Comments: Places the printer in an off line state until the printer is turned off and back on or until it receives a DC1 code.
ESC 2 Select Progr ammable Line Spacing Format: ASCII code: ESC 2 Decimal: 27 50 Hexadecimal: 1B 32 Comments: Executes the line spacing stored in memory by ESC A. If no ESC A command has been sent, ESC 2 sets the line spacing to l/6 of an inch. (The 2 is the character two and not ASCII code 2.
ESC 5 Turn Automatic Line Feed On/Off Format: ASCII code: ESC 5 n Decimal: 27 53 n Hexadecimal: 1B 35 n Comments: The following values can be used for n: 1: Mode is turned ON. 0: Mode is turned OFF. If the mode is on, the printer adds a line feed to each carriage return.
ESC D Set Horizontal Tabs Format: ASCII code: ESC D n1 n2 . . . NU L Decimal: 27 68 n1 n2 . . . 0 Hexadecimal: 1 B 44 n1 n2 . . . 00 Comments: This command allows setting of up to 32 horizontal tabs, which are entered as n1, n2, n3, etc. (in the range 1 to 137) with the NUL character terminating the command.
Print Size/Width/Enhancements Four modes in the IBM printer emulation mode are incompatible with each other. These modes are pica, elite, condensed, and proportional.
DC2 Cancel Condensed/Elite/Proportional Format: ASCII code: DC2 Decimal: 18 Hexadecimal: 1 2 Comments: Cancels condensed, elite, and proportional printing and selects pica printing.
ESC - Turn Overscore On/Off Format: ASCII code: ESC _ n Decimal: 27 95 n Hexadecimal: 1B 5F n Comments: The following values can be used for n: 1: Mode is turned OFF.
ESC Print Characters from Symbol Set Format: ASCII code: ESC n1 n2 dat a Decimal: 27 92 n1 n2 dat a Hexadecimal: 1B 5C n 1 n2 dat a Comments: Prints a number of characters from the symbol 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.
User-Defined Characters ESC = Define User-defined Characters Format: ASCII code: ESC = n1 n2 . . . nk Decimal: 27 61 n1 n2 . . . nk Hexadecimal: 1B 3D n1 n2 .
Appendix B Character Tables This appendix contains tables of the complete Epson mode character set, including the extra characters for the 13 Epson international character sets, and the IBM printer emulation mode character sets.
Table B-1. Epson mode charmers Decimal Hex Character ASCII name 0 00 NUL 1 01 SOH 2 02 STX 3 03 ETX 4 04 EOT 5 05 ENQ 6 06 ACK 7 07 BEL 8 08 BS 9 09 HT 10 0A LF 11 0B VT 12 0C FF 13 0D CR 14 0E s o 15.
Table B-I, continued Dec Hex Character Width Dec Hex Character Width 32 20 33 21 34 22 35 23 36 24 37 25 38 26 39 27 40 28 41 29 42 2A 43 2B 44 2C 45 2D 46 2E 47 2F 48 30 49 31 50 32 51 33 52 34 53 35 54 36 55 37 56 38 57 39 58 3A 59 3B 60 3C 61 3D 62 3 E 63 3F SP 12 ! 5 " 8 # 12 $ 12 % 12 & 12 ' 5 ( 6 ) 6 * 12 + 12 , 7 - 12 .
Table B-1, continued Dec Hex Character Width 96 60 97 61 98 62 99 63 100 64 101 65 102 66 103 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 7.
Table B-1, continued Decimal Hex Character Graphics Widths: character normal italic 128 80 NUL 129 81 SOH 130 82 STX 131 83 ETX 132 84 EOT 133 85 ENQ 134 86 ACK 135 87 BEL 136 88 BS 137 89 HT 138 8 A .
Table B-1, continued Decimal Hex Italic Width Graphics Widths: character character normal italic 160 A0 161 Al 162 A2 163 A3 164 A4 165 A5 166 A6 167 A7 168 A8 169 A9 170 AA 171 AB 172 AC 173 AD 174 A.
Table B-l, continued Decimal Hex Italic Width Graphics Widths: character character normal italic 192 C0 193 Cl 194 C2 195 C3 196 C4 197 C5 198 C6 199 C7 200 C8 201 C9 202 CA 203 CB 204 CC 205 CD 206 C.
Table B-1, continued Decimal Hex Italic Width Graphics Widths: character character normal italic 224 E0 225 El 226 E2 227 E3 228 E4 229 E5 230 E6 231 E7 232 E8 233 E9 234 EA 235 EB 236 EC 237 ED 238 E.
Epson International Character Sets Twelve character codes between 35 and 126 can represent more than one character each, depending upon the international character set you select. You can make the choice either by setting DIP switches l-6 through 1-8 or by using the ESC R command.
Table B-3. Proportional widths of international characters Characters 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.
IBM Printer Emulation Mode This section shows the characters available in IBM printer emulation mode. There are two main character tables: standard (CC Table 1) and international (CC Table 2). The standard table is selected when DIP switches 1-6 to 1-8 are all UP; the international table is selected by any other setting of these three switches.
Table B-4. IBM printer emulation mode characters Decimal Hex Standard International Symbol (CG Table 1) (CG Table 2) set Width 0 00 1 01 2 02 3 03 4 04 5 05 6 06 7 07 8 08 9 09 10 0A 11 0B 12 0C 13 0D.
Table B-4, continued Dec Hex Character Width Dec Hex Character Width 32 20 33 21 34 22 35 23 36 24 37 25 38 26 39 27 40 28 41 29 42 2 A 43 2B 44 2C 45 2D 46 2E 47 2F 48 30 49 31 50 32 51 33 52 34 53 3.
Table B-4, continued De c Hex Character Width 96 60 97 61 98 62 99 63 100 64 101 65 102 66 103 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 .
Table B-4, continued Decimal Hex Standard International Width (CG Table 1) (CG Table 2) 128 80 NUL 129 81 SOH 130 82 STX 131 83 ETX 132 84 EOT 133 85 ENQ 134 86 ACK 135 87 BEL 136 88 BS 137 89 HT 138 .
Table B-4, continued Decimal Hex Standard International (CG Table 1) (CG Table 2) Width 160 A0 161 Al 162 A2 163 A3 164 A4 165 A5 166 A6 167 A7 168 A8 169 A9 170 AA 171 AB 172 AC 173 AD 174 AE 175 AF .
Table B-4, continued Decimal Hex Standard International (CG Table 1) (CG Table 2) Width 192 co 193 Cl 194 C2 195 C3 196 C4 197 C5 198 C6 199 C7 200 C8 201 C9 202 CA 203 CB 204 CC 205 CD 206 CE 207 CF .
Table B-4, concluded Decimal Hex Standard International (CG Table 1) (CG Table 2) Width 224 E0 225 El 226 E2 227 E3 228 E4 229 E5 230 E6 231 E7 232 E8 233 E9 234 EA 235 EB 236 EC 237 ED 238 EE 239 EF .
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.
Problem Recommendation Printing is patchy faint, uneven, or intermittent Check that the ribbon is seated correctly and moves freely in the cartridge. If you have been using the ribbon for a long time or for a large amount of printing, it may need to be replaced.
Troubleshooting Graphics Problems Problem Recommendation Strange dot patterns appear in graphics printouts Printer freezes when printing graphics Text appears as random graphics characters Many computers have problems sending one or more of the codes between 0 and 13.
The data dump on the previous page was made while writing an earlier version of this appendix. By comparing the column of characters at the right with the printout of hex codes, you can see that the capital A (for Appendix) in the third row, was printed as 41.
The extra line feed character is usually no problem, unless you want to send ASCII code 13 on its own as part of a graphics statement or a character definition. To do this, use the OPEN statement to assign a file number to the printer (LPT1:) and use the PRINT # statement in place of LPRINT.
Replacing the print head As soon as the print head fails, stop using the printer and call the Epson toll-free number for the location of the nearest Authorized Epson Customer Care Center for a replacement head. The print head catalog number is #8731. To replace the head, follow these steps: 1.
6. Lift the print head from its position and carefully disconnect the flat cable from the print head, as shown in Figure C-2. Figure C-2. Disconnecting the cable 7. Connect the new print head to the flat cable, place the new print head in the head mount, and move the head lock levers back to their original positions.
l Remove 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.
Appendix D Defaults and DIP Switches This appendix lists all of the default settings and lists and explains the settings of all the DIP switches. Default and Initialization Settings The T-750 can be i.
DIP Switch Settings The T-750 has twelve DIP (Dual In-line Package) switches that allow you to change many of the printer’s settings to suit your individual needs. The DIP switches are in two groups, mounted on the back panel, as shown in Figure D-1.
Table D-I. DIP switch group 1 Switch number Function l- l Select condensed or normal characters 1-2 Select slashed or unslashed zero 1-3 Select character table* 1-4 Select printer commands 1-5 l-6 l-7.
symbol set cannot be selected permanently because it causes printer commands to be ignored. The DIP switch settings to select the different character sets are shown in Table D-3.
Appendix E Technical Specifications This appendix contains the specifications for the T-750 including the built-in parallel interface. Printing Printing method Impact dot matrix Printing speed 240 cha.
Mechanical Ribbon Cartridge, exclusive to T-750 or Epson FX series printers, black #8755 Life expectancy (in characters, at 14 dots/character): 3 million MCBF 5 million lines (excluding the print head) Print head Life 100 million characters, at 14 dots/character Dimensions and Weight Height (including tractor): 5.
Environment Temperature Operation: 40°F to 95°F (5C° to 35C°) Storage: -25°F to 150°F (-30C° to 65C°) Humidity Operation: 10% to 80% without condensation Storage: 5% to 85% without condensation Shock Operation: Up to 1 G within 1ms Storage: Up to 2 G within 1ms Vibration Operation: Up to 0.
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.
2. “Return” denotes the twisted-pair return, to be connected at signal ground level. For the interface wiring, be sure to use a twisted-pair cable for each signal and to complete the connection on the return side.
Table E-2. Printing enabled/disabled signals and control conditions On-Line DC1/DC3 (Data on/off contr.) ERROR BUSY ACKNLG Printing (Disabled/enabled) SLCT IN (Indicator on) ENABLED ON-LINE LOW DC1 /DC3 (interface) (no effect) HIGH HIGH/LOW PULSED EA.
Glossary Note that these definitions apply specifically to printers. If a word is italicized, see that topic for more information. application program A program that helps you carry out a particular task, such as word processing or financial planning.
carriage return The control code that returns the print position to the left margin. When issued together with a line feed, the print position moves to the left margin of the next line. In bidirectional printing, the print head may not actually move to the left margin.
dot matrix A method of printing in which each letter or symbol is formed by a pattern (matrix) of individual dots. double-high printing Printing in which each character is twice as high as normal. double-strike printing A way of producing bolder characters.
form In printer terminology, a form is normally the equivalent of a page. form feed A control code and a panel button that advances the paper to the next top of form. hexadecimal (hex) See number systems. intialize To establish the initial default status of the printer by turning the printer on or sending an INIT signal.
number systems Three number systems are commonly used with printers: decimal is base 10 and uses the digits 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9. (This is the most familiar system.) hexadecimal (hex) is base 16 and uses the digits 0, 1, 2, 3, 4, 5, 6, 7, 8 9, A, B, C, D, E, and F.
proportional printing Printing in which the width of the character varies from character to character. For example, a capital W receives much more space than a lowercase i. The result looks more like a typeset book than a typewritten draft. pull tractor A detachable device that moves continuous paper through the printer.
Index Command descriptions are not indexed here. For page references for specific commands, see pages A-4 - 6 or the Quick Reference card. A American Standard Code for Information Interchange, 3-2 Application programs, 3-l - 7 ASCII, 3-2 Automatic sheet feeder, 2-1 - 3 B Bail, paper, I-10, 2-4 - 5 BASIC, 3-6 - 7 Baud rate.
F M Foreign language characters. See International characters FORM FEED, 1-13 Maintenance, C-5 - 7 Menu, printer, 3-l Moving the printer, C-7 Multi-part forms, 2-l G Graphics, 5-l - 18, D-3 Graphics programs, 3-6 H N Near Letter Quality (NLQ), 4-l 0 Hexadecimal, 3-2 - 3 Hexadecimal (hex) dump.
Programming languages, 3-6- 7 Proportional mode, 4-2 W Protector, print head, 1-2 Word processors, 3-3 - 4 R READY light, l-13 Ribbon, installing, 1-3 - 5 Ribbon, life, E-2 Roman, 4-1 Z Zero, slashed, D-3 S Sans serif, 4-l SelecType, l-14 - 16 Selftest, 1-11-12 Setting up, l-l - 20 Single sheet.
An important point after buying a device Epson T-750 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Epson T-750 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 Epson T-750 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Epson T-750 you will learn all the available features of the product, as well as information on its operation. The information that you get Epson T-750 will certainly help you make a decision on the purchase.
If you already are a holder of Epson T-750, 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 Epson T-750.
However, one of the most important roles played by the user manual is to help in solving problems with Epson T-750. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Epson T-750 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
