GE WIU-4 - LED indicators

Configuring the WIU-4 13
LED indicators
The four green LEDs on the board provide visual indication of
the system interfaces.
Refer to “Indicators” on page 18 for LED status indicators and
definitions
Table 5. LED indicators
LED Description
D1 DI monitor LED
D2 F/2F data LED
D3 Door DO LED
D20 Power LED