Intro-1

The compact design and light weight of the LQ make it ideal for home and business applications. A 7K buffer frees your computer so you can work on one document while printing another.
Using this manual To make it easier to set up your new LQ-800 or LQ-1000, this manual includes a 10-step guide to setting up your printer. These steps take you from unpacking, through ribbon and paper loading, to printing your first document. Easy-to-read tabs make it simple for beginners or experienced users to find information. Additional sections describe how to use your new printer with word processors, create graphics, define your own characters, and more. If you are familiar with earlier Epson manuals, youll find two terms changed to make them more descriptive. In this manual, doublewidth is used instead of expanded, and condensed is used in place of

compressed.

Intro-2

Chapter 1

Setting Up Your LQ Printer
Setting up your new LQ is easy. Simply follow the steps in this chapter. Note The LQ-800 and LQ-1000 are essentially the same printer except that the LQ-1000 can accept wider paper. Therefore, most of the illustrations in this manual show only the LQ-800. If there is a difference that you need to know about, a separate illustration shows the LQ-1000.
First, remove the printer from the box and take off all outside plastic covering and foam supports. See that you have received all the parts shown in the illustrations on the next page. (Youll find the paper feed knob inserted in the foam packing material.)

Unpacking Your Printer

Figure 1-1. The LQ-800

Figure 1-2. The LQ-1000

Remove the tape that holds the dust cover in place during shipping and take the cover off the printer. Simply tilt the dust cover up and lift it off the printer.
WARNING The print head is protected by two plastic bumpers during shipping. Both of these bumpers must be removed before turning on the printer. Remove the long bumper to the right of the print head first, then move the print head to the center of the LQ and remove the small bumper on the left side of the print head. There is a clear plastic overlay on the control panel to protect it from scratching and discoloration. Its up to you whether you remove the overlay or leave it on. Installing the paper feed knob Next install the paper feed knob. To install the knob, simply push it onto the shaft on the right side of the printer, as shown in Figure 1-3. The shaft has one flat side that must be matched with the flat side of the hole in the knob.
Figure 1-3. Installing the paper feed knob
Now that youve installed the paper feed knob, use it to remove the sheet of paper wrapped around the printers platen (the black roller).
The most important consideration in choosing a location for your printer is that it be close enough to connect a cable to your computer. But also keep the following tips in mind:

Replacing the ribbon.

When buying new ribbon cartridges for the LQ-800 or 1000, be sure you get a ribbon specifically for the LQ-800 or 1000. Ribbon cartridges for other Epson printers, such as the FX series, may closely resemble an LQ ribbon, but their use can damage the LQ print head. Also, ribbon cartridges for the LQ-1500 will not fit the LQ-800 or 1000, and the Epson ribbon replacement pack #8758 should not be used as a replacement ribbon. The LQ uses a continuous-loop, inked fabric ribbon. When your printing becomes too light, replace the ribbon with a fresh cartridge. To replace the ribbon, just pull up on the raised fin on top of the LQ-800 cartridge, or the two plastic tabs on the LQ-1000 and lift the cartridge out of the printer. To install a new ribbon, follow the preceding steps.
complete the remaining setup steps before installing either of the optional systems.
When you receive your LQ, it is set up to print on single sheets of paper. Even if you have purchased one of the optional paper feeding systems (the cut sheet feeder or the tractor unit), you should first
Loading Single-Sheet Paper
It is much easier to run the self test (Step 8) and to connect the LQ to your computer (Step 9) before you install an optional system. After completing the setup steps, see Chapter 2 for installing the cut sheet feeder, or Chapter 3 for installing the tractor unit. Installing the single-sheet guide Now install the single-sheet guide. It helps you feed individual sheets of paper into the LQ. spring, insert it into the groove as shown below.
First, put the edge tab into the guide frame. Holding the plastic
Assembling the single-sheet guide 1-8
The guide has rounded pins on each end. These pins fit into notches on each end of the paper slot. Slide one of the guides pins into one notch. Then, with gentle pressure, snap the other pin into the other notch as shown in Figure 1-8.
Figure 1-8. Installing the single-sheet guide
The edge tab on the left side of the guide is movable, with a click stop for its middle position. For standard-sized (8-inch wide) paper, see that the tab is in the click-stop position. Loading the paper Loading single-sheet paper in the LQ is simple-its just like loading paper in a typewriter.
1. Check that the dust cover is tilted up to make it easier to see inside the printer, as shown in Figure 1-9. 2. Make sure the paper release lever is pushed back in the direction of the arrow in the figure, and that the paper bail is pulled away from the platen.
Figure 1-9. Loading single-sheet paper
3. Insert a single sheet of paper behind the platen as shown in Figure 1-9. Put the left edge of the paper against the edge tab on the single sheet guide. 4. With the power OFF use the paper feed knob to roll the paper into the printer far enough to be held by the paper bail. (If the power is ON, use the LINE FEED button as described in Step 6.) 5. Push the paper bail back against the paper, and the paper is ready.

time, either while youre loading paper, or when youre adjusting where you want printing to begin. If you hold this button down, the paper advances continuously. The line feed function works only when the printer is off line. DRAFT-Pressing this button selects the draft typestyle. The printer beeps once to acknowledge the draft selection. The draft function works only when the printer is on line. Note Use the LETTER QUALITY or DRAFT buttons before you tell the computer to print. Do not use them while the LQ is printing.
LINE FEED-Pressing this button advances the paper one line at a
When you receive your LQ, it is preset to print in the Letter Quality mode. As shown in the sample below, the Letter Quality characters are fully formed and are ideal for formal correspondence or other presentation-quality work. For those times when you need only a rough draft, the LQ also has a draft mode, also shown below. In draft mode, the LQ prints more quickly, because fewer dots are used to form each letter. This

T h i s

Selecting the Letter Quality or Draft Mode

Letter

d r a f t

Quality

S t y l e
The LQ gives you three ways to select either the Letter Quality or draft mode.
Control panel-You can choose between the Letter Quality and draft modes with the appropriate button on the control panel. DIP switch-A switch on the back of the printer selects either Letter Quality or draft as the default typestyle (the style in effect when you turn the power on). See Appendix A for details. Software command-You can also switch between the Letter Quality and draft modes by sending a command to the printer as explained in Chapter 5.
These three choices allow you to tailor the LQ to your printing needs. If you find you use the Letter Quality mode most of the time, you can leave the settings just as they are. If you print in draft mode more than Letter Quality, just reset the DIP switch as outlined in Appendix A. But no matter what you choose, you can always use the buttons on the control panel to switch between the two styles.
The LQ has a built-in self test function that automatically prints out all of the characters in the selected character set-either Letter Quality or draft. Before running the self test, make sure that paper is loaded in the printer and that the power is turned OFF. If you have an LQ-1000, be sure to use 14-inch-wide paper to avoid printing on the platen.

Letter Quality High Speed Draft
Emphasized Double-strike Italics
Fifteen Characters Per Inch

Underlined

Condensed
S u p e r s c r i p t S u b s c r i p t

Proportional

ESCape and ASCII
The details of printer-computer communication are complex, but for most purposes all you need to know is that the computer sends a series of codes (each consisting of one or more numbers) to the printer, and the printer interprets them.
Some codes tell the printer to print a character, and other codes tell it to turn on or off certain printer functions, such as emphasized or Letter Quality. Because the codes between 0 and 127 are basically standardized by the American Standard Code for Information Interchange (ASCII), they are referred to as ASCII numbers in this manual. Nearly all of the codes for printer functions require more than one number and begin with a special code, called the escape code. This code signals that the next number is a code for a printer function and its name is usually printed with the first three letters capitalized (Escape) or it is abbreviated ESC or (ESC). In the demonstration programs in this manual, youll see how ASCII and ESCape codes are used in the BASIC programming language.
LPRINT signals that information is to be sent to the printer. The CHR$ (character string) function is used for numerical codes. CHR$(27) is the ESCape code. Quotation marks are used for printable characters, such as letters of the alphabet.
Your word processing or business program may use other methods to send those codes, such as pressing the ESC key for the ESCape code. See your software manual for further information and use Appendix B of this manual to find the proper codes. Appendix D also has some suggestions on using LQ features with applications software.

Demonstration Programs

To enable you to see the LQ features in action, this manual includes demonstrations in the BASIC programming language. Although you will probably not do much of your printing using BASIC, the demonstrations are in BASIC because nearly all personal computer systems include some version of this language. Therefore, almost everyone can try the examples. As you run the programs (or even as you read the explanations and look at the printed examples), you learn how the LQ responds to the messages your computer sends it by printing letters, numbers, symbols, and graphics in various print modes.
Even if you never use BASIC again, you will know the capabilities of your printer, capabilities that can often solve your printing problems. For example, if you need a special symbol, such as a Greek letter, you will know that you can turn to the chapter on user-defined characters and create such a character. If you dont want to do the exercises in BASIC, you dont have to. In most cases the software that you use for word processing, business, or graphics does the calculating and communicating with the printer for you. All you need to do is install your software as explained in Chapter 4. Running BASIC programs.

With a specific cancelling code. Each mode has a cancelling code, which you can find in the discussion of the mode and also in Appendix I. By resetting the printer, a method explained in the next section.

Resetting the Printer

Resetting your LQ cancels all modes that are turned on. You can reset the printer with one of two methods:
Sending the reset code (Escape @) Turning the printer off and then on.
Either one of these methods returns the printer to what are called its defaults, which are the standard settings in effect every time you turn the printer on. Resetting the printer has two main effects. It returns the printing to single-strike pica, thus cancelling any other pitches or enhancements you may have turned on, and the current position of the print head becomes the top-of-page setting. The reset code does not cancel the draft mode if it has been selected with the panel button, but turning off the printer does cancel the draft setting. Some of the demonstration programs end with a reset code (Escape @) so that the commands from one program will not interfere with the commands in the next one. After you run a program with a reset code in it, remember to change the top-of-page setting before you begin printing full pages. Disabling a programs reset code Some word processors and other applications programs send a reset code or initialization signal to the printer before sending data to be printed. Basically, the purpose of this code or signal is to cancel any settings that might interfere with the programs print control options. In most instances, this is fine. However, if you decide you want to set up the LQ to do something your applications program wont do, you have to make sure a reset code doesnt wipe out your new settings. Some initialization codes can be removed by using the setup or installation procedures that are part of many applications programs. Once youre into the setup procedure, find the section that deals with initialization, and see if the program has a list of codes it sends to the printer. If it does, the setup procedure usually allows you to cancel or remove the initialization settings. If the initialization code cannot be disabled or removed from your applications program,. you can usually use the programs print options function to control formatting and typestyles. Look in the manual for the program to find out how to select print options.

Print Quality Command

Although you can turn on the draft mode with one of the panel buttons, you can also use a software command to switch between draft and Letter Quality. Enter and run the following program to see how Letter Quality and draft are turned on and off by an ESCape sequence (note that you use a lowercase x, not a capital X, in line 10).

10 LPRINT "This is standard printing." 20 LPRINT CHR$(27)"G"; 30 LPRINT "This is double-strike printing." 100 LPRINT CHR$(27)"@"
This This is standard printing. is double-strike printing.
Since each line in this mode is printed twice, the speed of your printing is slowed. The code to turn off double-strike is ESCape H. Some users prefer the effect of emphasized, and others prefer double-strike. You can look at the printout below and decide for yourself. This and is this standard is printing, printing.
and this is emphasized printing,

double-strike

Underline mode The LQ also has a mode that underlines characters and spaces. You turn it on with ESCape -1 and off with ESCape -0. Note that the underline code is like the double-width code in that it uses a character, in this case the hyphen or minus sign, combined with numeral one to turn it on and a character combined with the numeral zero to turn it off. You can see it in action with the following program:
NEW 10 LPRINT "This is not underlined. 20 LPRINT CHR$(27)"-1"; 30 LPRINT "This text is underlined."
This This Proportional mode In the standard draft and Letter Quality modes on the LQ, each character is given the same amount of space, whether it is a narrow letter like i or a wide letter like a capital W. In the proportional mode, however, the space allowed for each letter is proportional to its size. The proportional mode is always Letter Quality. You can see the difference between standard and proportional modes if you enter and run the following program: is not underlined. text is underlined.
LPRINT LPRINT LPRINT LPRINT
CHR$(27)"p1" "Proportional mode is on." CHR$(27)"p0"; "Proportional mode is off."
Proportional mode is on. Proportional mode is off.
Notice that you must use a lowercase p, not a capital P, for this mode. The next section describes Master Select, which includes another method for turning proportional on and off. Master Select The LQ has a special: ESCape code called Master Select that allows you to choose many possible combinations of nine different modes: pica, elite, proportional, condensed, emphasized, double-strike, double-width, italic, and underline. The format of the Master Select code is ESCape ! followed by a number that is calculated by adding together the values of the modes listed below: underline 128 italic 64 double-width 32 double-strike 16 emphasized 8 condensed 4 proportional 2 elite 1 pica 0 For many combinations, just add up the values of each of the modes you want and use the total as the number after ESCape !. For example, to calculate the code for expanded underlined pica, add the following numbers together: underline 128 double-width 32 pica - 0 160

10 LPRINT "The formula for water is H"; 20 LPRINT CHR$(27)"S1";"2"CHR$(27)"T"; 30 LPRINT "0." 40 LPRINT CHR$(27)"@"
The f o r m u l a f o r w a t e r i s H 2O.
Now that you see how to use the ESCape sequences for superscript and subscript, you can devise your own examples. International characters As you know, languages other than English require a few extra characters. The LQ has provided for printing in many languages by having 13 sets of international characters in its ROM (Read Only Memory). In order to print any of these characters, you first select one of the following character sets and then use the individual characters within that set. 0 1
USA France Germany United Kingdom Denmark I Sweden Italy
Spain Japan Norway Denmark II Spain II Latin America
You can select any character set with an ESCape code. In BASIC it has the following format:
LPRINT CHR$(27)"R"CHR$(n)
In this format n is the appropriate number from the list of international character sets. In other words, the BASIC command to select the French character set is:
LPRINT CHR$(27)"R"CHR$(1)
Another method of selecting most of the international character sets is to reset a DIP switch. If you plan to use one of the first eight international sets quite a bit, see Appendix A for instructions on using the DIP switches. Once you have selected a character set, whether you do it with the ESCape code or the DIP switches, you will be able to print several new characters. The character sets are shown in Tables 5-2, 5-3, and 5-4. The number at the top of each column in the tables is the ASCII code that prints the characters in that column.
Table 5-2. International characters in draft mode
USA FRANCE GERMANY UK DENMARK I SWEDEN ITALY SPAIN JAPAN NORWAY DENMARK II SPAIN II LATIN AMERICA
Table 5-3. International characters in Letter Quality mode
Table 5-4. International characters in proportional mode
Once you have selected an international character set with the DIP switches or the ESCape R code, you can use the tables to see which keys on your standard keyboard can produce the international characters you want. Simply type the character from the top row of one of the figures in order to print the corresponding character in the row of the set you have chosen. For example, if you have reset the DIP switches for the UK character set and you press the # key, the symbol will be generated. Even though you will see the # symbol on the screen, the symbol will be printed on the paper. For another example, if you have selected the Swedish character set and you press the @ key, the symbol will be generated. 5-17
If your keyboard does not have one of the keys that you need, you will have to send the proper ASCII number to the printer in another way, such as a programming language like BASIC.

0,252,31,0,DATA 15,128,15,7,192,7,3,240,7,1,254,7,0,255,7,0, 127,DATA 0,31,199,0,7,231,0,1,247,0,0,255,0,0,127,0,0,63 In this program, line 20 assigns the graphics option (24-pin tripledensity) with code 39. Code 42 sets the number of pin columns at 42. Lines 80-140 contain 126 bytes of data (42 pin columns x 3 bytes for each pin column). Lines 30-60 print the design that you see below.
Notice that the dots overlap quite a bit. This design was printed using the triple-density 24-pin graphics option because the density is the same (180 dots to the inch) in both directions. Adding the following lines to the program above will cause the pattern to print 10 times in a row as shown below. 15 FOR C=l TO 10: RESTORE 65 NEXT C
Individual graphics options commands As previously mentioned, the LQ responds to commands that are used by Epson FX and RX series printers. There are four individual graphics options commands that are very much the same as the ESCape * command, but each one works for only one graphics option. All these commands are 8-pin graphics options. Note that these commands contain one less variable than the ESCape "*" command because they dont need to select a graphics option. They are shown in Table 6-2.
Table 6-2. Individual graphics options commands
Reassigning command The LQ has a command that allows you to change the graphics option assigned to any of the four individual graphics options commands. The command looks like this: ESCape ? s m The letter s represents the command that you wish to change the assignment for (K, L, Y, or Z) and m is the number of the graphics option (from Table 6-1) that you want to assign to it. For example, to change the ESCape K command to use the CRT I screen graphics option, the command in BASIC is:
LPRINT CHR$(27)"?";"K"CHR$(4)
This is a quick way to change the aspect ratio of the design that you are printing. Changing the graphics option will change the width without changing the height. You should, however, make this change with caution. If you change one of the 8-pin graphics options to a 24-pin graphics option without changing the program that supplies the graphics data, you will print garbage (if the program prints at all). Remember, the 24-pin graphics options require three times as much graphics data as the 8-pin graphics options. 6-10

User-Defined Characters

With the LQ, it is possible to define and print characters of your own design. You can design an entirely new alphabet or typeface, create characters for special applications such as mathematical or scientific symbols, or create graphic patterns with user-defined characters to serve as building blocks for larger designs. Below you can see samples of typefaces created with the userdefined character function.
You can make the task of defining characters easier by using a commercial software program that assists you in creating characters or simply supplies you with sets of characters already created. Also, some popular commercial software programs take advantage of the LQs user-defined character function to enhance printouts. (These characters are called download characters in some programs.) The standard characters are stored in the LQs Read Only Memory (ROM), and the user-defined characters are stored in the LQs Random Access Memory (RAM). In order to free the LQs RAM for use in storing user-defined characters be sure that DIP switch 1-4 is OFF. The switch is set to OFF at the factory, but if you have turned it ON to use the 7K buffer, turn it OFF before you begin this section. (See Appendix A for instructions on changing DIP switches.) Design grids User-defined characters are like 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 planning a small dot graphics pattern. To design a character you use a grid that is 24 dots high-one dot for each wire on the LQ print head. The width of the character matrix is dependent upon the character set in use. For draft characters, the grid is nine dots wide. For Letter Quality it is 29 dots wide, and for

Note This command will cancel any user-defined characters you have created. You must send this command to the printer before you define characters. If you use this command at the beginning of a program, then define your special characters and select the user-defined character set, you can print with the user-defined set as your normal character set. Youll never need to switch back and forth between sets. Letter Quality characters If you select Letter Quality printing with the ESCape xl command, you can design user-defined characters using up to 29 columns of the Letter Quality/Proportional grid. The dot columns are spaced closer together horizontally than draft style dot columns (the horizontal dot spacing is 1/360th of an inch as opposed to 1/120th of an inch for draft characters). Proportional mode characters Selecting the proportional character mode will yield user-defined characters of the highest resolution. Characters can be designed using all 37 columns of the Letter Quality/Proportional grid. Remember that in Letter Quality and proportional, as in draft, you cannot place dots in adjacent columns. There must be an empty dot position to the left and right of each dot that prints. Superscripts and subscripts You can also create superscript and subscript user-defined characters. Just as Letter Quality characters are defined when the Letter Quality mode is selected, super/subscript characters are created when either superscript or subscript is selected. These super/subscript characters can be used either as superscripts or as subscripts. The characters are exactly the same; it is only their placement that differs. The difference between super/subscript
characters and regular characters is that they are smaller. They are a maximum of 16 dots high and their width in dot columns is shown in Table 6-4.
Table 6-4. Super/subscript widths

d1 (maximum) 23

d0 + dl + d2

(maximum) 42

Draft Letter Quality Proportional
Since super/subscript characters are smaller, they dont require as much information when you define them. When you define super/ subscript characters, you need only two bytes of data for each vertical row of dots. Design grids for these characters are shown in Figure 6-8.
Letter Quality and Proportional
Figure 6-8. Grids for super/subscript characters
Mixing print styles Each of the three user-defined character modes (draft, Letter Quality, and proportional) can be used in combination with most of the LQs various print styles. For instance, emphasized works with userdefined characters. The characters you design are enhanced to give this printing effect.
Mixing the three types of user-defined characters is not permitted. If, for example, you select draft and define some characters, then select proportional and define some more, the first character definitions will be destroyed. Only one type of character definition may be stored in RAM at any time. If you define characters in one mode, then switch to another mode and select the user-defined character set, the command will be ignored and nothing will print. The user-defined character definitions, however, remain unaffected. If you switch back to the mode in which they were defined, you can then select and print them. Keep in mind that user-defined characters are stored in RAM, which is not permanent. Whenever the printer power is turned off, or the printer is initialized with the ESCape @" command, all of the user-defined characters are lost. Also, your computer sometimes sends an initialization (INIT) signal, which wipes out all user-defined characters. (Some computers do this each time BASIC is loaded.)

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Appendix C
Installing the Option Cartridge
The option cartridge for the LQ lets you change typestyles, extend the capabilities the printer, or use programs designed for other popular printers. Full instructions on their use come with each module. The cartridge is made up of two modules-the identity module and the font module. These two modules are plugged together to form an option cartridge, as shown in Figure C-1. The cartridge can then be plugged into the LQs option cartridge compartment as shown in Figure C-2.

0D 0 A 6 D 7O 0A 0D 0 A 0D 0 A 0D 0 A 5 0D 0 A 6C 0 D 0 A 1B 4O 0 D F. G. H. I. E. Sample text. @.
You can consult Appendix B to find the meaning of the hexadecimal codes. The following explanation of the first line will put you on the right track for using the hex dump mode. The first code in the first line is hex 46 (the same as decimal 70), which is the code for F; therefore F is printed in the first position in the guide section. Then, because there is no semicolon in line 20, BASIC sends a carriage return and a line feed, hex codes 0D and 0A. Each of these is represented by a dot in the guide section. The program then sends the hex codes 47, 48, and 49, with each followed by a carriage return and line feed. When the program gets to line 30, it sends ESCape E and a carriage return and line feed. These are hex codes lB, 45, 0D, and 0A, which are represented in the guide section by a dot, an E, and two more dots. Now you can follow a hex dump printout on your own. Some computer systems change one or more codes when sending them to the printer. The ability of the LQ to dump in hexadecimal lets you determine which codes are creating problems for your system. A hex dump printout of a program shows you exactly what the printer is receiving, regardless of what the computer is sending. The
following test program lets you check to see what codes, if any, are problems for your software. This program is in BASIC; use an equivalent program for another programming language.
l0 FOR X=0 TO LPRINT CHR$(X); 30 NEXT X
Put the printer in hex dump mode and then RUN the program. Remember to press the ON LINE button to make the LQ print the final line. Then compare your printout with the list of hex codes in order in Appendix B. If any are skipped or repeated, you will know that your computer system changes some codes before it sends them to the printer. For example, in the lines below, which are the first two lines of the printout of the test program run with IBM PC BASIC release 2.0, you can see that in this case BASIC adds hex 0A, which is the code for line feed, after hex 0D, the code for a carriage return. You will also notice that the program does not send hex 1A (decimal 26). Both of these characteristics are discussed in the next section.
0 A 0B 0C 0 D 0 A 0 E 0F 1B 1C 1D 1E 1F
The hex dumping capability can help you debug a program quickly. Appendix B will help you translate the hex codes to ASCII equivalents.

IBM PC BASIC Solutions

There are three problems in using the IBM Personal Computer BASIC to drive a printer. First, the IBM PC BASIC inserts a carriagereturn/line feed (CRLF) after each 80 characters you send it. Second, it adds an LF to each CR in an LPRINT statement. Third, release 2.0 of PC BASIC will not send hex 1A (decimal 26). Here is the way to adjust the width when it is the only problem. Tell the computer that the print line is wider than 80 characters with this WIDTH statement:

WIDTH "LPT1:",255
The 255 is a special number that prevents the computer system from inserting a CR - LF into the line. Unless, of course, theres one in your program. The extra line feedCHR$(10)that accompanies each carriage returnCHR$(13)is no problem except when you need to use CHR$(13) in a graphics program. Getting rid of the extra CHR$(10) is rather complicated. First you open the printer as a random file:
OPEN "LPTl:" AS #l
Although this allows you to send any code to the printer, you can no longer use the LPRINT command. Instead, you must use a PRINT #1 command:
PRINT #1, "Now I can print anything"
This does allow you to print anything, but it ignores any previous WIDTH statements. If you want to print more than 80 columns per line in a graphics program, you must therefore change your opening statement to include the appropriate WIDTH statement:
OPEN "LPTl:" AS #l : WIDTH #l, 255
There is no easy solution to the problem with CHR$(26). It is best to change any instance of decimal 26 (hex 1A) in your programs to another number.
Applesoft BASIC Solutions
Applesoft BASIC does not use PRINT to send data to the screen and LPRINT to send data to the printer as Microsoft BASIC does. Therefore, you need to change the programs in this manual somewhat. In most cases all you need to do is to add two lines to each program and change all instances of LPRINT to PRINT. Add a line at the beginning of the program that states PR#l and a line at the end that states PR#0. For the programs in this manual that contain INPUT statements, put the line that states PR#l after the INPUT statement.
QX-10 and QX-16 Solutions
The format for the WIDTH statement for the Epson QX-10 and QX-16 computers is:

WIDTH LPRINT 255

To keep your LQ working like new, always keep it in a safe and clean place. Keep it away from dust, grease, and any heat sources. A safe temperature range is 41F to 95F. To clean the outside of the printer case, use a soft, clean cloth dampened with clear water. Stubborn stains can be removed with nonabrasive household cleaners. The inside front portion of the printer should also be cleaned periodically to get rid of dust and paper lint. First, turn the power switch OFF and unplug the power cord from the electrical outlet. Then remove the dust cover. Use a small vacuum cleaner and soft brush to clean inside the printer. Be careful not to bend or damage any of the parts inside the printer. With the power OFF, you can move the print head back and forth to clean under it. Once in a great while your LQ should be lubricated by an authorized Epson dealer. Changing the print head The expected life of an LQ print head is about 200 million strokes. See your Epson dealer for replacements. If the print head fails suddenly or long before its estimated lifetime is over, the problem is probably in another component of the printer. Take the LQ to your dealer for service. Removing the old print head Be sure the power is OFF before you touch the print head. If you have been printing, wait about 15 minutes to allow the print head to cool.

ESC ESC ESC ESC ESC ESC ESC ESC ESC ESC ESC ESC ESC ESC ESC ESC ESC ESC ESC ESC ESC ESC ESC ESC ESC ESC ESC ESC ESC ESC ESC ESC ESC ESC ESC ESC ESC ESC

115 120

ESC ? ESC @ ESC A ESC B ESC C ESC C0 ESC D ESC E ESC F ESC G ESC H ESC J ESC K ESC L ESC M ESC N ESC 0 ESC I ESC Q ESC R ESC S 0 ESC S l ESC T ESC U ESC W ESC Y ESC Z ESC \ ESC a ESC b ESC e ESC f ESC g ESC k ESC 1 ESC p ESC s ESC x
Reassign Graphics Mode. I-24 Initialize Printer. I-29 Select n/60-inch Line Spacing. I-15 Set Vertical Tabs. I-18 Select Page Length in Lines. I-16 Select Page Length in Inches. I-16 Set Horizontal Tabs. I-17 Select Emphasized Mode. I-8 Cancel Emphasized Mode. I-8 Select Double-Strike Mode. I-9 Cancel Double-Strike Mode. I-9 Immediate n/180-inch Line Feed. I-15 Single-Density Graphics Mode. I-22 Double-Density Graphics Mode. I-22 Select Elite Width. I-7 Select Skip-Over-Perforation. I-13 Cancel Skip-Over-Perforation. I-13 Select Pica Width. I-7 Set Right Margin. I-12 International Character Set. I-11 Select Superscript. I-9 Select Subscript. I-9 Cancel Superscript/Subscript. I-10 Select Unidirectional Mode. I-30 Select/Cancel Double-Width Mode. I-7 High-Speed Double-Density Graphics. I-23 Quadruple-Density Graphics. I-23 Move Print Head. I-20 Justification. I-21 Set Vertical Tabs in Channels. I-18 Set Relative Tabs. I-17 Set Print Position. I-21 Select Fifteen Width. I-8 Select Family of Typestyles. I-19 Set Left Margin. I-12 Select/Cancel Proportional Mode. I-19 Select Half-Speed Mode. I-30 Select Print Quality. I-5

Commands by Function

This section describes all the LQ control codes. They are divided in the following way: Print Quality Character Width Print Enhancement Page Formatting Word Processing Graphics User-Defined Characters MSB Control Other Codes
Each command has a format section and a comment section. The format section gives the ASCII, decimal, and hexadecimal codes for the command. In some cases there is also a control key code because some commercial software programs can use a control key for a code between 0 and 27 (decimal). In this section, CTRL O for example, means hold down the control key while you press O. Letters in parentheses, such as (n) or (d), are variables, which are explained in the comments sections. In BASIC you can use either decimal or hexadecimal numbers, and if there is a single letter in the second ASCII code column, you can use that letter in quotation marks instead of the number below it. For example, the format section for the right margin command is as follows: ASCII code: ESC Q (n) 27 Decimal: 81 ( n ) Hexadecimal: 1B 51 (n) In BASIC you can send the command to set the right margin to 60 in three ways: Decimal: LPRINT CHR$(27) CHR$(81) CHR$(60) Hex: LPRINT CHR$(&H1B) CHR$(&H51) CHR$(&H3C) Decimal with quotes: LPRINT CHR$(27) "Q" CHR$(60) ESCape sequences that require a 0 or 1 with a letter, such as ESC Wl to turn on double-width, can use either the ASCII code or the numeral in quotation marks for the 0 or 1. For example, in BASIC you can turn on double-width with either of the formats below:

EPSON AMERICA, INC.

Product Support Bulletin
Subject: 24 Pin Printer Error and Beep Codes Date: 4/3/91 Page(s): 1 of 4 PSB No: P-0076 Originator JV
Epson printers issue beep tones when certain error conditions exist. Those beeps can assist you in locating and repairing customers printers. The following error codes are listed by product name. NOTE: Most of the beeps issued by the printers are of.1 second duration with a.1 second pause between beeps. Where the beeps or the pauses are longer, it has been noted in the text. The description 3 Beeps x 2 means two sets of three beeps. LQ-200/AP-beep: 1 beep: 3 beeps: 5 beeps: On-Line light is flashing: BEL code A Control Panel setting is accepted. Paper End detected Abnormal carriage movement Printhead is over heated. Carriage will stop until the printhead cools down.
LQ-500, LQ-510, LQ-1010, LQ-850, LQ-950, LQ-1050, L1000, AP-4000, AP-beep: 1 beep: 3 beeps: 5 beeps: BEL code (.5 set beep) A Control Panel setting is accepted Paper End detected Abnormal carriage movement
PSB No: P-0076 Page: 2 of 4 LQ-800, LQ-1000, Lbeep: 1 beep: 3 beeps: 5 beeps: 5 beeps: LQ-beep: 1 beep: 3 beeps: 5 beeps: 5 beeps: 5 beeps: LQ-beep: 5 beeps: 5 beeps: BEL code Paper End detected Abnormal carriage movement (.5 sec. pause between beeps) BEL code (.5 sec. beep) A Control Panel setting is accepted Paper End detected Color select mechanism error (.5 sec. beep,.5 sec between beeps) Abnormal carriage movement (.5 sec. beep,.5 sec between beeps) CG ROM failure (.5 sec. beep,.5 sec between beeps) BEL code A Control Panel setting is accepted Paper End detected Abnormal carriage movement (.5 sec. pause between beeps) +35V supply is abnormal
PSB No: P-0076 Page: 3 of 4 LQ-2500 NOTE: Printers with LCD displays use error messages along with beeps to inform the user of problems. The following messages will help you to troubleshoot problems. A blank LCD screen with the Power-on LED lit can be caused by a bent pin on one of the PROMS or jumper J1 may be set incorrectly. 1 beep: 5 beeps: 5 beeps: LQ-2500 LCD Codes: 10 LQ-beep: 3 beeps: 5 beeps: 5 beeps: 5 beeps: LQ-2550 LCD Codes: BEL code Paper End detected Abnormal carriage movement (.5 sec. pause between beeps) Platen Gap adjustment error (.5 sec. pause between beeps) Case open Invalid ID request to CGROM EEROM read/write error Abnormal carriage movement BEL code Abnormal voltageAbnormal carriage movement (.5 sec. pause between beeps)

00 (1)

(2) 02
The font could not be found. The printers internal program could not find the target font. Missing or damaged 7A ROM
Internal ROM check does not match. The versions may have been mixed.
PSB No: P-0076 Page: 4 of 4 LQ-2550 cont. A Verify After Write check to the SRAM has failed. The SRAM could be bad. This is a motor control error. Four possible areas of failure are: a. CR home condition not detected at power up b. Platen gap motor HP not detected correctly c. Friction/Tractor feed switching error d. Physical obstruction such as a jammed ribbon Skewed paper detect error. Since the initial reading upon loading a single sheet paper, the paper has skewed. This is a printhead wire protection feature. Illegal paper positioning. (1) If the paper is loaded using the knob instead of the LOAD/EJECT switch, this error condition will occur. This is a printhead wire protection feature. (2) PE sensor may have failed or is not connected. CPU error. An undefined op-code was detected. Error codes 11 and 12 are usually caused by new operators who are un-familiar with the machine. Both of these errors are corrected by turning the printer off, taking out the paper and turning the printer back on. Both features were added to ensure proper paper handling and prevent paper jams, which can result in printhead failures. Incorrect jumper settings on the ROMA board may cause errors 10 or 20. The correct settings are documented in the Service Manual (page A-54, figure A-52) and on TIB LQ2550-005. Errors 0,2, 3, 10, and 20 may require a repair, adjustment or replacement.

NOTES:

EPSON AMERICA. INC.

SERVICE

PRODUCT SUPPORT BULLETIN
Date: 3/1/88 Subject: Epson Printer/Ribbon Compatibility Number: P-0013A PURPOSE: This list will assist in the correct matching of Epson ribbons to printers. The numbers listed below are the Epson part This list supercedes numbers and can be used to order ribbons. PSB-013. EAI #
OEM # N/A N/A N/A N/A N/A ERC-04 ERC-13 ERC-08 ERC-14 ERC-16 ERC-17 N/A N/A ALL DX
LQ-500, LQ-800, LQ-850 LQ-1000, LQ-1050 LQ-2500 (BLACK) LQ-2500 (COLOR) ALL 80-COLUMN MX, RX, FX, FX-86e, LX-800, JX-80* LQ-1500 ALL 136-COLUMN MX, RX, FX,

FX286e

JX-80 (COLOR) P-80 LX-80, LX-86, LX-90, HW-10

EX-800/1000

(BLACK)

EX-800/1000 (COLOR)

*Recommended for use when color is not required.
EPSON AMERICA SERVICE, 23610 TELO AVENUE, TORRANCE, CALIF. 90505
EPSON AMERICA INC. SERVICE DEPARTMENT

E P S O N

PRODUCT

DATE: 06/24/87

SUPPORT

BULLETIN

P-0007
SUBJECT: LQ-800/1000 IBM GRAPHICS CHARACTER PRINTING Here at Product Support we receive numerous questions about the printing of IBM-type graphics on the LQ-800/1000 printers, and about the difference between the ESC/P and IBM identity modules. The purpose of this bulletin is to address these common questions. Printing IBM Graphics Characters The LQ-800/1000 cannot print the IBM graphics characters unless it has either the ESC/P (#7696) or the IBM (#7695) identity module installed. Module Differences Various options are available when using the identity modules, depending on which is used. The ESC/P provides the character graphics forms from the IBM standard character set, as well as Greek alphabet characters, and some mathematical operation symbols. In comparison, the IBM module has the Alternate and Symbol character sets, in addition to the standard set. These may be required for some applications. Software commands also differ between the two modules. The ESC/P module will allow use of all standard Epson printer commands normally available to the LQ printers, whereas the IBM module causes the LQ printer to emulate an IBM 5152 printer, with the loss of some Epson printer commands normally available to the LQ. All font modules are usable with either identity module.