3-105 Service Level Troubleshooting
Level 2 Diagnostics (Runtime)
Runtime diagnostics occur during normal printer operation. When the following
conditions occur, the printer automatically turns off the appropriate motors or devices
and disables printing to prevent damage:
• Paper out
• Cover open
• Knife unable to home
• Thermal print head too hot
• Power supply voltage out of range
The Printer Status (Green) LED signals when these conditions occur and indicates the
state or mode of the printer.
The Printer Status LED has 3 colors: green, amber, and red. LED indication for Printer
Status LED is shown as below.
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