Model light guide
Quantum Fiber C4000 Light Guide
Use this page to compare known light colors, blinking patterns, meanings, and fixes for the Quantum Fiber C4000.
Quick reminder: This is a model-specific guide. Do not use it for a different model unless the manufacturer says the light codes are shared.
Light status table
| Light | Color | Pattern | Meaning | What to do |
|---|---|---|---|---|
| Status light | Orange and Green | Blinking alternating colors | On Quantum Fiber C4000 equipment, blinking orange and green can indicate an automatic firmware update is in progress. | Do not unplug the modem during a firmware update. Let it finish and reconnect. |
Before replacing parts
Check the exact light name, color, and blinking pattern. Many devices use similar lights for very different states, such as setup mode, firmware updates, charging, connection attempts, paper jams, or failed pairing.
Source note:
This model page is built from the linked source material below and individual detail pages.