Understanding the LED Status Light on your Zebra GK420
The table below will help you understand what information that your Zebra GK420 printer is trying to tell you.
| LED Status and Color | Printer Status |
| Off | Off |
| Solid Green | On |
| Solid Amber | Stopped |
| Flashing Green | Normal Operation |
| Flashing Red | Stopped |
| Double Flashing Green | Paused |
| Flashing Amber | Paused |
| Alternately Flashing Green/Red | Needs Service |
| Flashing Red/Red/Green | Needs Service |
| Flashing Red/Amber/Green | Memory Defragmentation |