Technical Manual
Table Of Contents
- Table of Contents
- Product Specifications
- Warnings, Cautions, and Notes
- Introduction
- Commissioning
- Tools Required
- Connect to the Main Board
- Commission the DCU
- Installer Commands
- Global Commands
- Administrator Commands (for an LTE Backhaul)
- Alarm Menu
- Manufacturing Menu
- MTU Menu
- Transceiver Menu
- Records Menu
- Power Supply Debug Menu
- Transceiver Debug Menu
- Advanced Menu
- Global Navigation Satellite System (GNSS) Menu
- Maintenance
- Troubleshooting
- Testing the DCU
- Local Menu “WALL” Command Information
- DCU-Generated Headend Messages
- Index
50 D C U M a i n t e n a n c e & O p e r a t i o n M a n u a l
Troubleshooting
Power Supply Board
• Verify the power cables harness from the battery is attached.
• Verify the board is securely seated.
• Check LED activity lights as indicated in the following image and table.
LED D2 (Blue) LED D3 (Red) LED D4 (Green) LED D9 (Green)
Solid on - initial
boot-up
Off - not used
(normal)
Flashing -
transmitting
(normal)
On - 3.3 VDC
power present to
board (normal)
Flashing - boot-up
completed (normal)
Off - not
transmitting
Off - no power to
board
LED State Description
1
Off No power to PCB
On Power supply board is booting
Flashing 1x/sec Power supply board is running
Flashing 4x/sec Firmware upgrade is in progress
3
Off Solar panel or AC charger is switched off or
not connected to the DCU
On Solar panel or AC charger is connected to the
DCU
LED 1
Incoming AC
Incoming DC voltage from battery harness
LED 3
Thermistor
connection