Section 11: fargo workbench printer utility, Reviewing the card tab and diagnostic button, Section 11: fargo workbench printer utility -1 – FARGO electronic FARGO DTC 400 User Manual
Page 286: Reviewing the card tab and diagnostic button -1, Fargo workbench printer utility, Proper printhead operation. see

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Fargo Electronics, Inc.
DTC400 Card Printer/Encoder User Guide (Rev. 2.6)
11-1
Section 11: Fargo Workbench Printer
Utility
Click on Diagnostics to bring up the Fargo Workbench Printer Utility. See the Fargo
Workbench Printer Utility Help File for further instructions on each option.
Reviewing the Card tab and Diagnostic button
Display A – Card tab > Diagnostics button