Contents 7197 Owner’s GuideSeptember 1998xLoading and Changing the Receipt Paper............................................................. 37Removing the Paper Roll .................................................................................. 37Loading the Paper Roll ..................................................................................... 39Advancing Paper ............................................................................................... 40Chapter 3: Solving Problems 39Green LED Does Not Come On/Printer Will Not Print...................................... 40Green LED Blinking (Slow) ..................................................................................... 40Green LED Blinking (Fast)....................................................................................... 40Receipt Printing is Light or Spotty ......................................................................... 41Other Serious Problems ........................................................................................... 42Contacting a Service Representative ...................................................................... 42Chapter 4: Diagnostics 44Level 0 Diagnostics ................................................................................................... 44Level 1 Diagnostics ................................................................................................... 45Printer Configuration........................................................................................ 45Configuring the Printer..................................................................................... 46Communication Interface Modes .................................................................... 49Diagnostic Modes .............................................................................................. 51Emulation/Software Options .......................................................................... 53Hardware Options............................................................................................. 56Default Code Page ............................................................................................. 58EEPROM to Default Settings............................................................................ 60Level 2 Diagnostics ................................................................................................... 61Level 3 Diagnostics ................................................................................................... 62Chapter 5: Communication 61Communication Overview ...................................................................................... 61Interface............................................................................................................... 61Sending Commands .......................................................................................... 61RS-232C Interface...................................................................................................... 62Print Speed and Timing .................................................................................... 62XON/XOFF Protocol......................................................................................... 63DTR/DSR Protocol ............................................................................................ 63RS-232C Technical Specifications .................................................................... 63Setting Extra RS-232C Options ........................................................................ 67Chapter 6: Commands 67Command Conventions ........................................................................................... 67Introduction............................................................................................................... 67List of Commands and Location............................................................................. 67By Command Code ........................................................................................... 68By Function......................................................................................................... 72Printer Function Commands............................................................................ 72Vertical Positioning and Print.......................................................................... 72Horizontal Positioning Commands ................................................................ 73Print Characteristic Commands....................................................................... 73