Replacing the Print Head | Star Micronics NX-2400 guide

Figure 5-1. Replacing the ribbon cartrlctge

REPLACING THE PRINT HEAD

The dot matrix print head has a life of about 200 million dots, or years of normal use. When printing is too light even after replacing the ribbon, you’ll know that the print head has reached the end of its service life. To replace the print head, follow the procedure below.

As you remove the old print head, note carefully how the cable is threaded, so that you can thread the new cable in the same way.

Warning: The print head becomes hot during operation. If you have been using the printer, wait awhile so that the print head can cool off.

1.Turn power OFF and unplug the power cord.

2.Remove the top cover and ribbon cartridge.

3.Move the print head carriage toward the right until you can see the

connector cover. Remove the connector cover and pull the cable free from the connector.

4.Unscrew the two screws that hold the print head in place and set them aside.

5.Disengage the cable from the tabs holding it down, then remove the print head.

6.For easy installation of the new print head, move the carriage toward the left end of the rail.

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Star Micronics NX-2400 user manual Replacing the Print Head, Replacing the ribbon cartrlctge

Contents

NX-2400 Page HOW to USE this Manual Features of the Printer Quad-sized Tableofcontents With DOS and Basic Download Character Generator Chapter Platen Setting UP Remove the top cover Install the ribbon cartridge Install the optional IC card Replace the top cower Connect the printer to the computer Mount the paper guide Semiautomatic loading Figure l-7.Mounting the paper guide for single sheets Manual loading Loading and Parking Fanfold Forms 11. Closing the sprocket covers Paper parking Paper unparking Short se/f test Long se/f test Interface test Adjusting the Printing GAP International character set Print style and pitch selection Page Page OFF Control Panel OPERAllONS On Line switch Paper Feed switch Quiet Mode switch Sty/e/Pitch switch POWER-UP Functions Sh0ff test paffern On Line switch Lprint CHR$I Next B8 B9 Switch Combination Functions Switch combination functions of control panel Top Of fOff?L Style/Pitch Page Memo Using WE PR//vER Installing Your Software Command options Printer Setting the DIP Switches Using Your Software Type sty/e and pitch selection Printercommands Memo Using the Printer with DOS and Basic HARD-COPYING the Screen MS-DOS and PC-DOS Programming the Printer with DOS Commands Name of list device PRN New file Programming the Printer with Basic Acopy LQELITE.DAT PRN Aprint README.DOC ‘Cancel Lprint the Spacings are Changed Next H How the program works IBM Lprint ES= cHR$ocHR$6ocHR$6o Cleaning the Printer Replacing the Ribbon Replacing the Print Head Replacing the ribbon cartrlctge Connector cover Fligure 5-2. Replacing the print head Replacing the Battery in the RAM Card If a// text is printed on the same line TroubleshootingIf printing is faint, incomplete, or unclear If line spacing is twice as wide as expected If you have problems with graphics If you have problems with download charactersIf you have problems with horizontal tabulation Switches and fndicators Printing MechanismInterface and Emulation Character Sets Dot Matrix Size Paper Specifications Dimensions and WeightType Sty/es and Pitches Environmental Requirements Electrical SpecificationsInterface Signals Option Signal Pin No Name Memo Font Control Commands Select draft quality characters Select ornament character Select LQ charactersSelect LQ type Style Select Italic Characters Select Upright Characters Double-strike PrintingStart Underlining Start Overlining Cancel Superscript Or subscriptStop Underlining Stop Overlining Select character set #7 Select Standard characterSelect IBM character set Select Character set #2 Select s/ash zero Enable printing of all character codesEnable printing of a// character codes on next character Select normal zero High-speed elite pitch Pica pitchElite pitch High-density elite pitch Condensed printing Cancel condensed printingCancel expanded printing Expanded printing Se/ect proportional spacing Select master print modeCaucel one-line expanded printing Select fixed spacing Print double-height characters Increase character SpacingSelect double or quadruple size Return to normal Height Select Character Width Select character height, width, and line spacing Set line spacing to 7160 or 7172 inch Vertical Position CommandsSelect character type and print pitch Set line spacing to 718 inch Set line spacing to n/780 or n/216 inch Set line spacing to 716 inchSet base unit for line spacing Set line spacing to n/360 inch Define line spacing to n/72 inch Select forward feed modeSelect reverse feed mode Execute ESC a Feed paper n lines Perform one n/180-inch or n/2164nch line feedPerform one n/780-inch reverse line feed Set top of page at current position Set top margin Cancel top and bottom marginsSet page length to n inches Set bottom margin Set vertical tab stops Disable paper-out detectorEnable paper-out detector Set vertical tab stops every n lines Set left margin Select Vertical Tab channelVertical tab Set right margin Carriage return Cancel automatic line feedSet left and right margins Set automatic Line feed Center text BackspaceLeff justify Right justify Set horizontal tab stop every n columns Reset all tab stopsSet horizontal tab stops Horizontal tab Absolute horizontal tab in inches Relative horizontal TabRelative horizontal tab in inches Absolute horizontal tab in columns Print 8-bit double-density graphics Graphics CommandsPrint 8-bit single-density graphics Print 8-bit double-density, double-speed graphics Select graphics mode Print M-bit hex-density graphics Convert graphics density Copy standard characters from ROM into RAMDownload Character Define Download Select download character set ROM Other Printer Control CommandsDelete Last character Sent MSB Quiet Print Cancel Quiet PrintRepeat data Last Line Set printer on-line Cancel Immediate PrintSet printer off-line Stop printing One-line unidirectional printing PrintingUnidirectional printing Manual feed Reset printer Eject PaperSet print start position on ASF Memo AppendixCDOWNLOAD Norma/ character Semi-condensed Proportional Super/subscript character Iiao 1600 2440 If ST=5 then CLS Goto 3480 Character Sets I7’ Standard Character SET Pj-iii-j IBM Character SET #2 Page IBM CH Aracter SET #I Additional Character SET International Character Sets SfR Index Lol 111 107 Command Summary ESC ESC p ESC p0 ESC p.‘ 111