Manuals
Status LED Colors
KLANG:vokal & DMI-KLANG
- purple: ready
- blinking purple / red: audio clock sync error
- blue: booting
- yellow/green: booting stage 2
- red: error
- white blinking: KOS updating
This guide explains what the LED colors mean on a KLANG processor without a display. It helps users understand the network status, connection state, and audio clock validity — even before connecting a KLANG:app.
LED States
These LED states are shown immediately after boot, and if no KLANG:app or console is connected. It is also shown when the connection is timed out, i.e. no active connection to this device is present anymore for quite some time.
Once connected, the LED becomes solid purple, or blinks purple/red when the audio sync is not valid.
Once connected, the LED becomes solid purple, or blinks purple/red when the audio sync is not valid.
| Diagnostic Mode | Blinking LED State | Meaning | Notes |
|---|---|---|
| Half-Dim Purple | IP assigned via DHCP | DHCP server provided a valid IP |
| Blue | Using link-local Auto-IPs: 169.254.x.x/16 | No DHCP, auto-assigned fallback IP |
| Orange | Using a user defined Fixed IP | Manual IP set via KLANG:app or console, other than 192.168.1.200 |
| White | Using Default KOS IP: 192.168.1.200/16 | Default fixed IP that works well with default DiGiCo console IP addresses |
| Pulsing Purple | Waiting for :app/:kontroller/console to connect… | Will overlay one of the above colors as base status |
Button presses are acknowledged by a yellow LED blink for each button press after the detection of the button press sequence.
Once a KLANG:app or console connects, the LED indicates connection and audio clock status:
| Connected LED State | Meaning |
|---|---|
| Solid Purple | ✅ Connected to at least one :app, :kontroller or console |
| Blinking Purple/Red | ⚠️ Audio clock is invalid (e.g., no sync) |
The LED will always default to diagnostic mode after, as long as no app is connected. For network troubleshooting, power cycle the unit and observe the LED before connecting.
Basic Configuration with Reset Button Presses
Reset Button on KLANG processors allows to trigger often used configuration features with minimal GUI.
| Button Pattern | Action | Notes |
|---|---|---|
| Single Short Press | Write Logs & Backup to USB | Flash green (short) to confirm |
| Long Press (>3s) | Reboot | Flash red → solid red → reboot |
| Double Short Press | Revert to DHCP | Flash purple 2x → confirm with dim purple |
| Triple Short Press | Set default fixed KOS IP 192.168.1.200 | Flash white 3x → confirm with solid white |
| Five Short Presses | Enter Factory Reset mode | LED blinks blue/purple rapidly |
| Then Long Press | Confirm Factory Reset + Reboot | Flash red rapidly before reboot |
Status Colors on KLANG:vier
Normal Operation
- Red: Boot Stage 1
- White: Boot Stage 2
- Orange: Boot Stage 3
- Purple: Operational -> OK!
- Yellow: Error
During KOS Firmware Update
- Orange: Stage 1/4 or Stage 2/4
- Yellow: Stage 3/4
- White: Stage 4/4
- Blue: Done, Switch Power OFF
During KOS Firmware RECOVERY
- red / green alternating: push-button press detected
- Orange blinking @1sec: copying data from USB
- short red / green alternating: beginning to read new file (4 total) – then proceeds with Orange
