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Epson SQ-2550, SQ-850 Problem, Solution, font, (continued), what you expected, 7-8Troubleshooting, The printout is not

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	Problem		Solution
	The printout is not
	what you expected.
	(continued)		The wrong character table may be
	(continued)
	Graphic	characters
	(line, ect.) being		selected. If your application program is
	printed instead of the		capable of sending control codes, specify
	selected italic		the Italic character table using ESC t 0. If
	characters.		settings cannot be performed using
			control codes, set the CG TABLE option
			of SelecType to Italic. Refer to 3-14.
	Characters not		The wrong international character set is
	belonging to the		selected. If your application program is
	selected	international	capable of sending control codes, specify
	character	set being	the desired international character set
	printed.		using ESC R n. If settings cannot be
			performed using control codes, set the
			COUNTRY option of SelecType to the
			desired character set. Refer to 3-35.
	The character font or		Your software may be overriding your
	character	spacing	SelecType settings. Use the program’s
	selected by SelecType		setup (or install) procedure to check the
	cannot be printed.		printer settings on your computer’s
			display, then reset the values correctly.

7-8 Troubleshooting

Contents

Page Page Page Page Contents Continuous Typestyles Replacing Page About This Guide Conventions used in this guide WARNINGS CAUTIONS Notes 2 About This Guide Introduction Options Single-binand Double-binCut Sheet Feeders (C806081/C806091/C806101/C806111) 4Introduction Pull Tractor Unit (C800032/C800042) Optional Interface Boards Setting Up the Printer Ink Jet Precautions l-2Setting Up the Printer Unpacking the Printer Checking the parts Setting Up the Printer l-3 Removing the protective materials l-4 Setting Up the Printer CAUTION: 3. Remove the printer cover paper bail toward the platen Setting Up the Printer l-5 l-6Setting Up the Printer Choosing a Place for the Printer WARNING: large Setting Up the Printer l-7 Note: l-8Setting Up the Printer Assembling the Printer Attaching the paper guide Installing the ink cartridge l-10 WARNING: Skin and Eye Irritant Setting Up the Printer 1-12Setting Up the Printer Page Testing the Printer Connecting to a power supply 1-14 Setting Up the Printer Page Charging the ink cartridge Note: You 1-16Setting Up the Printer Page 1-18Setting Up the Printer Running the self test 1-20Setting Up the Printer Page 1-22Setting Up the Printer Setting Up the Printer l-23 Parts of typical draft and Letter Quality self tests are shown below Draft mode LINE SPACING 1-24Setting Up the Printer Letter Quality mode 1” SKIP LEFT MARGIN Checking the operation ProblemSolution The printer does not print or stops printing l-26Setting Up the Printer Problem ABCD Solution Setting Up the Printer l-27 Connecting the Printer to Your Computer The parallel interface 1-28Setting Up the Printer Page The serial interface Connect the serial interface cable as described in this section interface make sure that both 1-30Setting Up the Printer Page Setting Up Your Application Software use Choosing from a menu SQ-2550 SQ-850 LQ-1050 LQ-850 Page Paper Handling Choosing Sheets Special Choosing paper 2-2Paper Handling Using Single Sheets Loading a sheet Using Single Sheets 2-4Paper Handling Using single sheets Paper Handling 2-6Paper Handling Reloading during printing Using Continuous Paper Positioning your continuous paper supply 2-8Paper Handling Loading continuous paper Page Page Page Page Using Continuous Paper Page Switching between Continuous and Single Sheets Switching to single sheets 2-16Paper Handling Page 2-18Paper Handling Page 2-20Paper Handling Switching back to continuous paper Page Printing on Special Paper The paper thickness lever Printing on Special Paper 2-24Paper Handling Printing on Special Paper Labels 2-26Paper Handling Page Envelopes 2-28Paper Handling Printing on Special Paper 2-30Paper Handling Using the Printer Operating the Control Panel The display PAPER OUT 3-2Using the Printer The lights The buttons ON LINE: FORM FEED: LINE FEED: LOAD/EJECT: 3-4Using the Printer Draft, Roman, S Serif (Sans Operating the Control Panel 3-6Using the Printer Page SelecType: FORM FEED 3-8Using the Printer Other control panel features Self test: LINE Data dump: LINE FEED SelecType Settings SelecType Using SelecType ON LINE (FONT, PITCH, PAPER SELECT CG TABLE Italic, Graphic, Download COUNTRY PARITY SelecType Settings Changing the SelecType settings 3-14 Using the Printer CG TABLE Italic Initializing the settings 3-16Using the Printer SelecType Settings Page Length 3-18Using the Printer Skip Over Perforation Skip Over Perforation 3-20Using the Printer Adjusting the Loading Position The Loading Position Adjusting the loading position Short Tear-off What happens in short tear-offmode 3-24Using the Printer Page Adjusting the tear-offposition 3-26Using the Printer Short Tear-Off Selecting Typestyles Character fonts FONT 3-28Using the Printer Selecting Typestyles Trader's Times miniature zebras Selecting Typestyles miniature ORATOR-S We've just seen your excellent ad for Trader's Times for quantities over one gross 3-32Using the Printer Character spacing PITCH This is 10 cpi printing This is 12 cpi printing This is proportional spacing 3-34Using the Printer Selecting an International Character Set International character set Choosing a Character Table 3-36Using the Printer Choosing a Character Table Italics EPSON Extended Graphics Data Dump Mode Data Dump Mode 3-40Using the Printer spacing Enhancing Your Printing 4-2Software and Graphics Enhancing Your Printing Character size Double-widthand double-height This is normal 10 cpi printing T h i s Condensed Special effects and emphasis 4-4Software and Graphics Emphasized and double-strikeprinting This is ROMAN printing This is ROMAN, emphasized This is ROMAN, double-strike T h i s i s R O M A N , w i t h b o t h Italic printing Overlining, strike-through,and underlining Superscripts and Subscripts Outline and shadow 4-6Software and Graphics Enhancing Your Printing Selecting typestyles with Master Select 4-8Software and Graphics Graphics I n c o m e B r e a k d o w n The print head 4-10Software and Graphics Dot patterns Eight-elementgraphics Twenty-four-elementgraphics Labeling the nozzles 4-12Software and Graphics The graphics command Column reservation numbers 4-14Software and Graphics A simple graphics program Using hand-calculateddata to print graphics 4-16Software and Graphics Page 40 READ N 255,255 224,31,255,192 4-18Software and Graphics Graphics Individual graphics option commands The reassigning command 4-20Software and Graphics User-definedCharacters Designing your characters Page User-definedCharacters Defining your characters Data numbers values and 4-24Software and Graphics Sending information to your printer Page Page Copying ROM characters to RAM 4-28Software and Graphics Letter Quality characters Proportional mode characters Superscripts and subscripts 4-30Software and Graphics Page Mixing print styles h-32Software and Graphics Using Printer Options insertion The Cut Sheet Feeder Installation 5-2Using Printer Options Using Printer Options Paper handling (CSF) 5-4Using Printer Options Page Page Page Testing the printer in the cut sheet feeder mode 5-8 Using Printer Options Using Page The Cut Sheet Leader Loading envelopes S-10Using Printer Options Page 5-12Using Printer Options Using the cut sheet feeder use Paper out condition Page Switching between the cut sheet feeder and continuous paper 5-16Using Printer Options Single sheet insertion supply.) Removing the cut sheet feeder 5-20Using Printer Options The Pull Tractor Installation 5-22Using Printer Options The Pull Tractor Paper handling 5-24Using Printer Options Page 5-26Using Printer Options The Pull Tractor 5-28Using Printer Options The Pull Tractor Removing the pull tractor pull Page Interface Boards Choosing an interface Compatible interfaces Interface Boards Installing the interface board 5-32Using Printer Options Interface Boards Removing the interface board cover Page Installing the board 5-36Using Printer Options Page Use 5-38Using Printer Options WARNING: The #8143 new serial interface board Page Maintenance Cleaning the Printer 6-2Maintenance Cleaning the Printer Cleaning the Print Head 6-4Maintenance CLEANING Replacing the Ink Cartridge WARNING - Skin and Eye Irritant 6-6Maintenance Replacing the Ink Cartridge Note: On Replacing the Ink Cartridge 6-8Maintenance Transporting the Printer Transporting the Printer 5. Insert the notice sheet by rotating the platen knob 6-10Maintenance Page Troubleshooting Problems and Solutions 7-2Troubleshooting Power Supply ProblemSolution Power is not being supplied to the printer off even off Printing Page Page Page Problem Solution (continued) font 7-8Troubleshooting LOAD/EJECT The position of the printout is not what you expected feed off Page 7-10Troubleshooting The position of the printout is not what you expected. (continued) 7-12Troubleshooting Paper Handling Page Page Page Page Page Page Page Page Page Page Page Page Page Page Technical Specifications Parallel Printer specifications Printing method: 24-nozzledot matrix Buffer: 8K bytes fonts: tables: standard ASCII Paper length: Single sheets Printable area: Single sheet 8-4Technical Specifications feed Paper thickness: Mechanical Ink Cartridge: SQ-850/2550(SO20002) 8-6Technical Specifications WARNING --Skin and Eye Irritant Reliability: External Dimensions: Power consumption: Frequency: Insulation resistance: Shock: Vibration: Interface Specifications Parallel interface Your printer is equipped with both a parallel and a serial interface 8-10Technical Specifications Page Interface timing 8-12Technical Specifications Printing enabledldisabled signals and control conditions Serial interface Data format Technical Specifications Signal level Handshaking Error handling Connector 8-14Technical Specifications Specifications Cut sheet feeders Dimensions and weight: Bin capacity: Realiability: MCBF (Mean Cycle Between Failures): 100,000 cycles Environmental condition: Printable area: Storage condition: 40% Initialization 8-18Technical Specifications Default settings to Command Summary Using the Command Summary 9-2Commend Summary Using the Command Summary Command Summary Control key chart 9-4 Commend Summary Commands in Numerical Order Page 9-6Commend Summary Dec ESC R ESC Y ESC t Commands Arranged by Topic Printer Operation 9-8Commend Summary Page H e x a d e c i m a l : 1 B 5 5 n The following values can be used for n: 1:Mode is turned ON 0:Mode is turned OFF H e x a d e c i m a l : 1 B 1 9 n MSB Control Data Control 9-12Commend Summary Motion ASCII code: FF Hexadecimal: OC H e x a d e c i m a l : 1 B 4 3 n Commands Arranged by Topic 9-14Commend Summary Page 9-16 Commend Summary 27 65 n 27 74 n 9-18Commend Summary Horizontal Motion Page Page Page Overall Printing Style Page Print Size and Character Width Page Page Page Page Page Page Page Page On (1) 9-34Commend Summary Word Processing Character Tables 9-36Commend Summary Page Commands Arranged by Topic User-definedCharacters 9-38 Commend Summary Page Graphics ESC K 9-40Commend Summary Page Commands Arranged by Topic 9-42Commend Summary Appendix Proportional Width Table A-2Appendix 42B 43C 44D 45E 46F Proportional Width Table A-4Appendix Proportional Width Table Character Tables Italic Character Table A-6Appendix Page application program auto line feed baud rate bidirectional printing binary buffer byte carriage return CG table characters per inch (cpi) control code cut sheet feeder data dump decimal default double-strikeprinting draft emphasized printing EPSON Extended Graphics character table ESC (escape) Glossary memory micro adjustment micro feed number systems hexadecimal GL-7 push tractor RAM reset SelecType setting self test unidirectional printing user-definedcharacters Glossary GL-9 Index Page Index Index IN-3 IN-4Index Index IN-5 IN-6Index Index Index IN-7 Page C o n t r o l C o d e s b y F u n c t i o n