Epson T-750 Replacing the print head

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.Turn the printer OFF.

2.If the printer has been recently used, the print head will be hot. Let it cool.

3.Open the printer or tractor cover.

4.Remove the ribbon.

5.Release the head lock levers. (See Figure C-l.)

Figure C-I.

Replacing the print head

C - 6

Problem Solving and Maintenance

Contents

Page FCC COMPLIANCE STATEMENT FOR AMERICAN USERS WARNING Copyright © 1988 by Epson America, Inc Torrance, California Contents Introduction Setting Up Your T-750Printer Choosing and Loading Paper Using the T-750with Application Programs 3-1 Printer Selection Menus T-750Printer Features Character Tables Problem Solving and Maintenance Defaults and DIP Switches Technical Specifications Index Introduction c l e a r NLQ Sans Serif is crisp and distinctive Introduction About This Manual Where to Get Help Setting Up Your T-750Printer 1 Unpacking Your Printer 2Selecting the Right Location 3 Installing the Ribbon Tightening the ribbon And that’s it-theribbon is now installed Installing the Figure l-5 Positioning the ribbon Setting Up Your T-750 Printer 4 Loading Continuous-feedPaper Page Page Figure Page Loading single-sheetpaper 5 Turning On the Printer 6 Operating the Control Panel The buttons LINE LINE FEED ROMAN 7SelecType If SelecType does not work 8 Running the Self Test 9 Connecting the Printer to Your Computer The parallel interface 10 Choosing the Operating Mode with DIP Switches DIP Note The operating mode The Epson character graphics set DIP Making the choice Other DIP switch settings Choosing Paper Using Single-sheetPaper Preparing the printer Page Loading the paper Page If the paper does not load Reloading during printing Reinstalling the Tractor Unit Figure The Paper Thickness Lever Page Using the T-750with Application Programs Printer Selection Menus A quick test Computer - Printer Communication Naming and Word Processors Spreadsheets T-750 Normal Printer commands /027/077/015 Using Graphics Programs Programming Languages Sending printer commands with BASIC 100 LPRINT "This text will be printed 100 LPRINT CHR$(27);CHR$(69); LPRINT CHR$(27);"E LPRINT CHR$(&H1B);CHR$(&H145) Quality and Fonts NLQ Roman is clear and typewriter - like Print Size and Character Width Pitches and Proportional Spacing Pica: ABCDEFGHIJKLMnopqrstuvwxyz Elite: ABCDEFGHIJKLMnopqrstuvwxyz Pica: ABCDEFGHIJKLMnopqrstuvwxyz Proportional: ABCDEFGHIJKLMnopqrstuvwxyz Special Effects and Emphasis Printer This is normal NLQ printing This is emphasized NLQ printing Using Different Character Sets Page Layout and Other Commands Graphics and User-definedCharacters The Print Head Dot patterns Pin Labels Graphics Commands The graphics command format LPRINT CHR$(27);"K";CHR$(n1);CHR$(n2); Column reservation numbers functions n1 = n MOD Graphics data Simple Graphics Programming WIDTH statements Printing taller patterns "LPT1: LPRINT CHR$(27);"A";CHR$(8); FOR R = 1 TO Density Varieties Table 5-1. Graphics modes Reassigning a graphics mode LPRINT CHR$(27);"?K";CHR$(4); Designing Your Own Graphics Page 100 WIDTH "LPT1: 110 LPRINT CHR$(27);"A";CHR$(7); 120 FOR ROW = 1 TO 130 LPRINT CHR$(27);"Y";CHR$(41);CHR$(0); 140 FOR COLUMN = 1 TO User-definedCharacters Sending the character definition 100 LPRINT CHR$(27);"x0"; 110 LPRINT CHR$(27);"&";CHR$(0); 120 LPRINT "@@"; 130 LPRINT CHR$(136); 140 FOR I = 1 to Copying ROM to RAM Specifying the width and height Mixing print styles Other considerations Appendix A Command Summary A-1 LPRINT CHR$(27);"W";CHR$(1) LPRINT CHR$(27);"W";"1 Page Commands in Numerical Order A-4 A-5 Page Printer Operation DC3 Deselect Printer DC3 Speed ESC s Turn Half-speedMode On/Off ESC ESC U Turn Unidirectional Mode On/Off OFF Disable Paper-outSensor Page Page Data Control CRCarriage Return 0 D Cancel Line Page 0 A A-14 Select 1/84-inchLine Spacing Select l/6-inchLine Spacing Select n/216-inchLine Spacing ESC A ESC J Perform n/216-inchLine Feed A-16 Vertical tabbing ESC B 1 B Page ESC $ A-19 ESC Horizontal tabbing HTTab Horizontally A-20 Overall Printing Style Print Size and Character Width ESC P Page 0 E DC4 ESC W Turn Double-wideMode On/Off Page SOH ESC T Cancel Superscript/Subscript Word Processing Character Sets Page ESC: ESC % Cancel ESC A-32 Graphics ESC Z Page Commands that Duplicate Epson Commands Print Commands that Are Different from Epson Commands Page Page . N U Page ESC [@ ESC Char height Line feed A-42 36: Select Standard Character Set Page Page Epson Mode Decimal Hex Character ASCII name NUL null SOH start of heading Dec Hex Character Width Dec Hex Character Width Table B-1, continued Hex Character Width DEL Decimal Character Graphics Widths: character Italic Width normal italic Page Epson International Character Sets Characters Widths: Normal IBM Printer Emulation Mode Table B-4. IBM printer emulation mode characters Decimal Hex Standard International Symbol Width Dec II Table B-4, continued Table B-4,continued (CG Table 1) (CG Table 2) ENQ Table B-4, continued Table B-4,continued Page General Troubleshooting C-2 Troubleshooting Graphics Problems Data Dump Mode IBM PC BASIC Solutions Maintaining Your Printer The print head Replacing the print head Transporting the Printer C Default and Initialization Settings DIP Switch Settings International Character Sets E son mode DIP switch settings IBM printer Printing Paper Mechanical Electrical Environment Parallel Interface Notes: 1 E-4 Data Transfer Sequence Interface timing Printing enabled/disabled signals and control conditions On-Line DC1/DC3 Printing SLCT IN ERROR Glossary application program ASCII auto line feed baud rate carriage return condensed continuous paper control code cut sheet feeder (CSF) dot matrix double-highprinting double-strikeprinting double-wideprinting draft form form feed hexadecimal (hex) systems intialize number systems decimal hexadecimal on line paper-outsensor RAM reset self test 10 pitch top of form position Index A-4 Index IN-11 FORM FEED ON LINE PAPER OUT POWER LINE FEED IN-31