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QL 420 Cleaning......................................................................................... 51
Troubleshooting ......................................................... 52
Standard Control Panel............................................................................. 52
Optional LCD Control Panel ...................................................................... 52
Troubleshooting Topics ............................................................................ 53
Troubleshooting Tests............................................................................... 55
Printing a Configuration Label................................................................... 55
Communications Diagnostics ................................................................... 55
Calling Technical Support.......................................................................... 58
Specifications............................................................. 59
Printing Specifications ............................................................................... 59
Memory/Communications Specifications ................................................ 59
Label Specifications................................................................................... 60
Font/Bar Code Specifications .................................................................... 61
Communications Port ................................................................................ 62
Physical/Environmental/Electrical Specifications..................................... 63
QL Series Accessories............................................................................... 67
Appendix A ................................................................ 69
Interface Cables
Appendix B ................................................................ 73
Media Supplies
Appendix C ................................................................ 73
Maintenance Supplies
Appendix D ................................................................. 74
Product Support
Index ............................................................................ 75
Patent Numbers ......................................................... 77