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Epson LQ-800 WIDTH LPRINT, Maintenance, QX-10®and QX-16Solutions, Changing the print head, Removing the old print head

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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

Maintenance

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 41°F to 95°F.

To clean the outside of the printer case, use a soft, clean cloth dampened with clear water. Stubborn stains can be removed with non- abrasive 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.

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Contents

Page LQ-800and LQ-1000Printers User's Manual FCC COMPLIANCE STATEMENT FOR AMERICAN USERS Copyright © 1985 by Seiko Epson Corporation Nagano, Japan Contents Page Graphics and User-DefinedCharacters Graphics Pin labels Graphics Command User-Defined Own Characters Appendixes Figures Page Tables Introduction Using this manual LQ-1000 compressed Intro-2 Setting Up Your LQ Printer Page WARNING Installing the paper feed knob Selecting the Right Location Use a grounded •Keep your printer and computer away from base units for cordless telephones Installing the Ribbon Now you’re ready to install the ribbon 1. Manually move the print head to the middle of the platen Page Page Replacing the ribbon specifically Loading Single-SheetPaper first Installing the single-sheetguide spring, insert it into Assembling the single-sheetguide Figure 1-8.Installing the single-sheetguide Loading the paper Figure 1-9.Loading single-sheetpaper Insert a single sheet of paper behind the platen as shown in Figure 5.Push the paper bail back against the paper, and the paper is ready Caution LINE FEED FORM FEED To ensure that your word processor and the LQ finish pages at the same point: 2.You now have three choices: Compensate for the Adjusting the paper thickness lever Figure 1-10.Paper thickness lever Turning On the Power Page 6 Operating the Control Panel off FORM FEED/LETTER QUALITY LINE FEED/DRAFT 7 Selecting the Letter Quality or Draft Mode This is the Letter Quality style The LQ gives you three ways to select either the Letter Quality or draft mode Control DIP Connecting Your Printer to Your Computer The parallel interface Figure 1-14.Connecting a parallel interface cable The serial interface Printing Your First Document qDid you remove the plastic tab that holds the print head in place qIs the power source (power strip, etc.) turned ON The Cut Sheet Feeder Page Note stacker Figure Preparing the Paper for Loading Loading Paper Figure 2-6. Paper support and paper loading lever Figure 2-7.Loading paper; adjusting the right paper guide setting up your word processor for a cut sheet feeder The following is an example of a typical conversion To maintain 55 printed lines per page: Cut sheet Change Page Length from Printing with the Cut Sheet Feeder •The red PAPER OUT light goes out while there’s paper in the printer •Printing begins When the LQ finishes printing a document, you have three options document-First Caution Page Troubleshooting ProblemRecommendation Cut sheet feeder does not fit flush on the printer Printer doesn’t print; cut sheet feeder doesn’t operate Cut sheet feeder operates but doesn’t load paper Maintenance Page The Tractor Unit Installing the Tractor Unit Page Page Page Figure 3-8.Loading paper Page Figure 3-10. Top-of-pageposition Setting the top-of-pageposition Installing the paper separator and tractor cover Page Figure 3-12.Installing the tractor cover Removing the Optional Tractor Unit Using the LQ with Commercial Software Epson printer Draft printer LQ Features Letter Quality High Speed Draft Elite Underlined •LPRINT signals that information is to be sent to the printer •The CHR$ (character string) function is used for numerical codes •CHR$(27) is the ESCape code Demonstration Programs Running BASIC programs 10 LPRINT "BASIC programs for the 20 LPRINT CHR$(76)CHR$(81)CHR$(45); 25 LPRINT CHR$(56)CHR$(48)CHR$(48); 30 LPRINT " and LQ-1000 40 LPRINT "W1 "CHR$(87)CHR$(49) 40 FOR X=65 TO 50 LPRINT CHR$(X); 60 NEXT X: LPRINT: LPRINT 20 LPRINT CHR$(27)"M"; 20 LPRINT CHR$(27)"g"; ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]ˆ'abcdefghi Disabling a program’s reset code NEW 10 LPRINT CHR$(27)"x0"; 20 LPRINT "This is draft 30 LPRINT CHR$(27)"x1"; 40 LPRINT "This is Letter Quality 10 LPRINT "This is standard pica 20 LPRINT CHR$(27)"W1";"Double-widthpica 30 LPRINT "Still double-width CHR$(27)"W0"; 30 LPRINT CHR$(27)"M";"Double-widthelite This is condensed pica This is condensed elite Table 5-1. LQ character widths A B C D e f g h 10 LPRINT "This is standard printing 20 LPRINT CHR$(27)"E"; 30 LPRINT "This is emphasized printing 100 LPRINT CHR$(27)"@ 20 LPRINT CHR$(27)"G"; 10 LPRINT "This is not underlined.” 20 LPRINT CHR$(27)"-1"; 30 LPRINT "This text is underlined 10 LPRINT CHR$(27)"p1 20 LPRINT "Proportional mode is on underline italic64 double-width 32 double-strike emphasized condensed proportional 10 INPUT "Master Select number";M 20 LPRINT CHR$(27)"!"CHR$(M) 30 LPRINT "This sample uses 40 LPRINT "Master Select number";M 50 LPRINT CHR$(27)"@ 10 LPRINT "The formula for water is H"; 20 LPRINT CHR$(27)"S1";"2"CHR$(27)"T"; CHR$(27)"@ LPRINT CHR$(27)"R"CHR$(n) LPRINT CHR$(27)"R"CHR$(1) Page 10 LPRINT CHR$(27)"1"CHR$(l0); 20 LPRINT CHR$(27)"Q"CHR$(70); 10 LPRINT CHR$(27)"N"CHR$(6); Half-speedMode Printing to the End of the Page Graphics and User-DefinedCharacters I n c o m e B r e a k d o w n The print head Dot patterns Eight-pingraphics Twenty-four-pingraphics Pin labels Figure 6-1. Pin numbering system Figure 6-2.Calculations for pin patterns Graphics Command CHR$(170); 50 NEXT Using hand-calculateddata to print graphics Figure 6-3.Pattern on grid Figure 6-4.Data layout for 24-pingraphics 10 WIDTH "LPT1:",255 40 READ N 50 LPRINT CHR$(N); 60 NEXT 70 LPRINT LPRINT CHR$(27)"?";"K"CHR$(4) User-DefinedCharacters Design grids Figure 6-5.Design grids Defining Your Own Characters Figure 6-6. User-definedcharacter Data numbers The bits within each byte have values of 1, 2, 4, 8, 16, 32, 64, and Sending information to the LQ ESCape “&” 0 nl n2 d0 dl d2 data n2 n2 n2 (d0-d2) 10 LPRINT CHR$(27)"x0 20 LPRINT CHR$(27)"&"CHR$(0); 30 LPRINT "@@"; 40 LPRINT CHR$(1)CHR$(9)CHR$(l); 50 FOR I=1 TO ESCape “%” n 100in the program above Copying ROM to RAM ESCape “:“ 0 0 Letter Quality characters Proportional mode characters Superscripts and subscripts Table 6-4.Super/subscript widths d0 + dl + d2 Figure 6-8.Grids for super/subscript characters Mixing print styles Page The DIP Switches Page Table A-1.DIP switch panel Table A-2. DIP switch panel A-4 Table A-3.International DIP switch settings Table A-4.Interface selection Table A-5.Baud rate selection = Factory setting when delivered A-5 The LQ Character Set and ASCII Table B-2 11775 u 11977 w 12179 Y DEL SOH B-4 Installing the Option Cartridge The Identity Module The Font Module Using the Option Cartridges identity module C-4 Troubleshooting and Maintenance Problem Recommendation D-2 D-3 Beeper Error Warnings Hex Dump Mode D-4 FOR X=70 TO LPRINT CHR$(X): NEXT LPRINT "Sample text l0 FOR X=0 TO 20 LPRINT CHR$(X); 30 NEXT WIDTH "LPT1:",255 OPEN "LPTl:" AS #l PRINT #1, "Now I can print anything OPEN "LPTl:" AS #l : WIDTH #l WIDTH LPRINT Page Page Widths of the Proportional Characters Table E-1.Proportional character widths (continued) E-3 Page The Parallel and Serial Interfaces Table F-1.Pins and signals (continued) 14 — Signal Direc tion OUT Figure F-1 shows the timing for the parallel interface Figure F-1.Parallel interface timing DC1 and DC3 codes are enabled only when SW F-4 Serial Interface Choosing and Setting Up Optional Interfaces Internally Mounted Interface Cards Removing and replacing the printer case 3.Remove the ribbon cartridge G-2 Figure G-1.Removing the upper case G-3 Figure G-2.Removing the control panel 7. Slip the control panel through the case and set the case to one side G-4 Installing an Interface Board Figure G-4.Interface board mounted on main circuit board Altering Serial Interface Settings G-6 switch Table G-3.Baud rate settings for OFF Table G-5.Parity check settings for Table G-6.Parity check settings for G-8 Technical Specifications Paper LQ-800 LQ-1000 Printer Print head life . . . . . . . . . . . 200 million strokes Dimensions and weight 3.8 in Width (with paper Page Command Summary Commands in Numerical Order The following list shows the control codes and ESCape sequences that the LQ uses along with their decimal values BEL 14s o Select Double-WidthMode (one line) Page 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) Print Quality Character Width Select Condensed Mode ESC SI DC2 Cancel Condensed Mode CTRL R ESC SO DC4 Cancel Double-WidthMode (one line) DC4 CTRL T ESC W Page ESC G Select Double-StrikeMode ESC H Cancel Double-StrikeMode 1 B Page ESC R Select an International Character Set ESC Q Set Right Margin ESC N Select Skip-Over-Perforation ESC O Cancel Skip-Over-Perforation Cancels the mode selected by ESC N. Use the letter “O,” not the number Page ESC J Immediate n/180-inchLine Feed ESC A Select n/60-inchLine Spacing ESC C ESC CO ESC D Set Horizontal Tabs ESC e Set Relative Tabs ASCII code: VT ESC B ESC ESC b (c) ( c ) ESC p ESC (space) Select Character Space ESC $ Select Absolute Horizontal Tab ESC ESC a ESC f Set Print Position (m) ESC K Select ESC L Select Double-DensityGraphics Mode ESC Y Select High-Speed Double-DensityGraphics Mode ESC Y ESC Z Select Quadruple-DensityGraphics Mode ESC Select Graphics Mode (m) (n1) (n2) ESC Reassign Graphics Mode (s) O-6 32, 33, 38, 39 Note: See Chapter 6 for sample programs and further information ESC & Define User-Defined Characters MSB Control ESC # MSB Control Sequence Cancel ESC = (equal) MSB = 0 Setting is ON, the LQ will add a line feed to the DC1 Select Printer DC3 Deselect Printer DC3 ESC EM Cut Sheet Feeder Control ESC Select Unidirectional Mode (one line) ESC @ ESC U INDEX A-1 -A-6 DRAFT Index-2 Index-3 Index-4 Page Index-6 Index-7 Page Page Page Table 1. DIP switch panel Switch No Function See Table Select input buffer capacity 7KB EPSON AMERICA, INC LIMITED WARRANTY