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
Chapter 6 • Troubleshooting
D C U M a i n t e n a n c e a n d O p e r a t i o n M a n u a l 47
Cellular Board
Perform these checks using the following image for reference.
• Verify the attachment of the RF antennas.
• Verify there is a secure cellular connection.
Off Blinking 4x/sec DCU processing main board
firmware upgrade
Blinking 4x/sec Blinking 4x /sec DCU processing peripheral
board upgrade
On Off Error processing firmware
upgrade (requires reset to exit
this state)
LED 1 State LED 2 State Status
LED 3
LED 3
LED 3
LED 3
LED 3
LED 3
Cellular connector