Printing Problems, Printer Does Not Function | M-S Cash Drawer A794

A794 Owner’s GuideChapter 2: Using the Printer

Printing Problems

Problem	Possible Causes	What to Do	Where to Go
Colored stripe on the	Paper is low.	Change the paper.	A794 Owner’s Guide
receipt.
Receipt does not come	Paper is jammed.	Open the receipt cover,
out all the way.		inspect the knife, and
		clear any jammed paper.
Printer starts to print,	Paper is jammed.	Open the receipt cover,
but stops while the		inspect the knife, and
receipt is being printed.		clear any jammed paper.
Receipt is not cut.	Paper is jammed.	Open the receipt cover,
		inspect the knife, and
		clear any jammed paper.
	The printer is not	Contact your authorized
	configured for a knife.	service representative.
Print is light or spotty.	Paper roll loaded	Check that the paper is	A794 Owner’s Guide
	incorrectly.	loaded properly.
	Thermal printhead is	Use recommended	A794 Owner’s Guide
	dirty.	thermal receipt paper.
	Variations in paper.	Increase print density in	A794 Owner’s Guide
		“Set Hardware Options”	USE CAUTION when
		of printer Configuration	changing this setting.
		Menu to 110% or 120%
		as needed.
Vertical column of print	This indicates a serious	Contact your authorized
is missing.	problem with the printer	service representative.
	electronics.

One side of receipt is missing.

This indicates a serious	Contact your authorized
problem with the printer	service representative.
electronics.

Printer Does Not Function

Problem	Possible Causes	What to Do	Where to Go
Printer does not function	Printer not plugged in.	Check that printer cables	A794 Setup Guide
when turned on.		are properly connected on
		both ends.
		Check that the host or	A794 Setup Guide
		power supply is getting
		power.
	Receipt cover not fully	Close and latch the
	closed.	receipt cover.

December 1999

19

Image 24

M-S Cash Drawer A794 manual Printing Problems, Printer Does Not Function, USE Caution when, Changing this setting

Contents

Owners Guide Legal Notices Disclaimer Power Supply Contents Communication Interface Programming Information Features Options Description of Printer Models AvailableModel Identification Communication Interfaces Description of Printer Models Available Model IdentificationCommunication Interfaces Features Options Unpack the Printer Choose a LocationConnect the Cables A794 Thermal Receipt Printer Setup Guide Unpack the Printer Remove the Starter Paper Roll Supports Setting up the printer Choose a LocationOn a Flat Surface On a Wall Connect the Cables Communication Cable Power Supply Cable Cash Drawer Cables Reset Button Printer ControlsPaper Feed Button LED Tone Loading Receipt Paper To Load the Paper Using the Printer Paper jams Troubleshooting the Printer Configuring the Printer To start the test Poorly printed test printout Troubleshooting the Printer Troubleshooting the Printer Printer Tone and Green LED Printing Problems Changing this settingPrinter Does Not Function USE Caution when This page intentionally left blank Thermal Paper Specifications Manufacturers How to Order Ordering Thermal PaperOrdering Miscellaneous Supplies Thermal Paper Specifications How to OrderOrdering Thermal Paper Manufacturers Ordering Power Supply and Power Cord Ordering Miscellaneous SuppliesOrdering Cash Drawers Ordering Communication Cables Wall-Mount Kit Paper Specifications Print Zones CharactersPrint Modes Size Print Zones for 80 mm Paper Print Zones for 82.5 mm Paper Characters Print ModesSize Standard Paper Specifications Print ZonesPrint Zones for 80 mm Paper Print Specifications Print Zones for 82.5 mm Paper Print Density and Density of Receipt Print Lines To change the Print Density Duty Cycle Restrictions Printing Solid Blocks Character Sets Code Code Code Code Code Code Code Code Code Interface Sending Commands Communication OverviewRS-232C Interface Parallel Interface Sending Commands Using DOS to Send CommandsUsing Basic to Send Commands Communication Overview RS-232C Interface Print Speed and Timing XON/XOFF Protocol RS-232C Technical Specifications Communication ConnectorsPin DB-9 Connector Pin DB-25 Connector DTR/DSR Protocol Power Connector Cash Drawer Connector RS-232C Settings XON/XOFF, DTR/DSR Ieee Bi-directional Parallel Connector Parallel Interface Command Conventions List of Commands and Locations Comparisons Command DescriptionsBy Command Code By Function Command Conventions Ascii List of Commands and Location By Command Code 1B 2D n Select or Cancel Underline Mode 1B 49 n Select or Cancel Italic Print1B 4C Select Page Mode 1B 54 n Select Print Direction in Page Mode 1D 3A Select or Cancel Macro Definition 1D 42 n Select or Cancel White/Black Reverse Print Mode1D 21 n Select Character Size 1D 22 55 n1 n2 Flash Memory User Sectors Allocation Print Bar Code 04 n Convert 6 Dots/mm Bitmap to 8 Dots/mm Bitmap05 n Select Superscript or Subscript Modes Print Test Form Printer Function Commands Vertical Positioning and Print CommandsBy Function Perform Partial Knife Cut Horizontal Positioning Commands Print Characteristic Commands1B 74 n Select International Character Set 1F 05 n Select Superscript or Subscript Modes Graphics Commands Status Commands1F 04 n Convert 6 Dots/mm Bitmap to 8 Dots/mm 100 Barcode Commands Mode CommandsMacro Commands User Data Storage Commands Flash Download Commands Comparisons 24 n1 n2 Command Descriptions Printer Function CommandsClear Printer Perform Full Knife Cut Perform Partial Knife Cut Generate ToneSelect Peripheral Device for Multi-Drop Ascii ESC BEL Hexadecimal Decimal Default Initialize Printer Select Paper Sensors to Output Paper End Signals Default of nRange of n Enable or Disable Panel Button Select Sensors to Stop Printing Select Cut Mode and Cut Paper Generate Pulse to Open Cash DrawerValue of p1 Value of p2 Print Test Form AX t Vertical Positioning and Print Commands Print and Feed One LineActivate Carriage Return Feed n Print Lines Range of n Default Feed n Dot RowsAdd n Extra Dot Rows Print Set Line Spacing to 1/6 InchSet Line Spacing Ascii ETB Print and Feed Paper Print and Feed n LinesSet Horizontal and Vertical Minimum Motion Units GS P x y Horizontal Positioning Commands Horizontal TabSet Column Ascii HT Set Absolute Starting Position Compatibility Information A794 receipt vs. A793 receipt Value of k Default Set Horizontal Tab Positions Set Relative Print Position To move to the left Select Justification Set Left Margin GS L nL nH Set Printing Area Width Print Characteristics Commands Select Double-Wide CharactersSelect Single-Wide Characters Ascii DC2 Select 90 Degree Counter-Clockwise Rotated Print Select Pitch Column WidthAscii ESC DC2 Set Right-Side Character Spacing Select Print Mode Select or Cancel User-Defined Character Set Define User-Defined Character SetException Values and Ranges Select or Cancel Underline Mode Cancel User-Defined Character Copy Character Set from ROM to RAMESC 0 0 ESC ? n Select or Cancel Emphasized Mode Select or Cancel Double Strike Select or Cancel Italic Print Select or Cancel 90 Degree Clockwise Rotated Print Select or Cancel Upside Down Print ModeSelect Character Size Normal Select Or Cancel White/Black Reverse Print Mode Select or Cancel Smoothing Mode Select Superscript or Subscript Modes Summary of Rotated Printing Graphics Commands Print Raster Graphics Download BMP Logo Select Bit Image Mode Dot Single-Density Mode Print Advanced Raster Graghics Select Single-Density GraphicsValue of r Data bytes Select Double-Density Graphics Select the Current Logo Define Downloaded Bit Image Print Downloaded Bit Image Convert 6 Dots/mm Bitmap to 8 Dots/mm BitmapHexadecimal 1D 2F m Decimal Value and Range of m Status Commands Status Command IntroductionBatch Mode Transmit Peripheral Device Status RS-232C printers only ESC uHexadecimal 1B 75 Decimal 27 117 Value of returned byte Hexadecimal 1B 75 n Decimal Transmit Paper Sensor Status Hexadecimal Decimal Values Transmit Printer ID Transmit Printer ID, Remote Diagnostics Extension Values of n Programming Information A794 Owner’s Guide December 107 Undefined. Fixed to off Send Printer Software Version Real Time Commands Preferred ImplementationAlternate Implementation Rules for Using Real Time Commands Moving Data through the Buffer Busy Line and Fault Conditions Real Time Status TransmissionRelated Information = Transmit Printer Status = Transmit Error Status = Transmit RS-232C Busy Status = Transmit Receipt Paper Status Real Time Request to Printer Real Time Printer Status Transmission Ascii GS ENQValue of Byte Select or Cancel Automatic Status Back ASB Auto Status Back 118 December December 119 Recognizing Data from the Printer Bar Code Commands Select Printing Position of HRI CharactersSelect Pitch of HRI Characters Select Bar Code Height Print Bar Code GS k m n d1…dn 1D 6B m n d1…dn 29 107 m n d1…dn Select Bar Code Width CODE39 Mode Commands Print and Return to Standard ModeCancel Print Data in Page Mode Ascii FF Print Data in Page Mode Select Page ModeAscii ESC FF Ascii ESC L Select Standard Mode Select Print Direction in Page ModeAscii ESC S Set Print Area in Page Mode N1-4 = N5 = N6 = N7 = N8 = Set Absolute Vertical Print Position in Page Mode Set Relative Vertical Print Position in Page Mode Macro Commands Select or Cancel Macro DefinitionHexadecimal 1D 3A Decimal Execute Macro Value of t User Data Storage Commands Write to User Data StorageRead from User Data Storage Read from Non-Volatile Memory December 133 Flash Memory User Sectors Allocation Erase User Flash SectorGS U n1 n Flash Download Commands Switch to Flash Download ModePrinter operation ESC Return Boot Sector Firmware Part Number Return Segment Number Status of Flash MemorySelect Flash Memory Sector to Download Get Firmware CRC Erase All Flash Contents Except Boot Sector Return Microprocessor CRCReturn Main Program Flash CRC Erase Selected Flash Sector Reset Firmware Download to Active Flash SectorAscii GS Space 1D FF Index Basic DOS December 141