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Troubleshooting
Meaning of the Indicator Light Patterns
1/13/2016 ZD420 User’s Guide 212485-001 Rev. A
Meaning of the Indicator Light Patterns
The indicators on the control panel show the current status of the printer.
Table 1 • Status of Printer As Shown by Indicator Lighting Patterns
Typical Operating Conditions
Steady Flashing Fade
The printer is ready.
The printer is paused.
The media supply is out. The printer needs attention
and cannot continue without user intervention.
Ribbon In - The printer is in direct thermal mode and
has a ribbon cartridge installed. Remove the ribbon
cartridge to continue printing in direct thermal mode.
Ribbon Low - Default is 10% of ribbon remaining.
The Media indicator flashes red and yellow while the
Status indicator is solid yellow.
Ribbon Out - missing ribbon cartridge or the ribbon
cartridge needs replaced to continue printing when
the printer is in thermal transfer mode.
A data communication operation has not finished, but
is not actively being transferred.
Data communications are in process.
Special Error Conditions
There is a jam in the cutter.
The printhead is open. The printer needs attention
and cannot continue without user intervention.
The printhead is over temperature.
Caution • The printhead may be hot and could
cause severe burns. Allow the printhead to cool.
The printhead is over temperature. Turn the printer
OFF. After several minutes to allow the printer to
completely cool, turn the printer ON.
Caution • The printhead may be hot and could
cause severe burns.
The printhead is under temperature.