07/03/19
Message Overview:
Message Name:
NO R-IOC-4 BUS INPUT
Message Code:
B3-007806
Associated CAS:
| Reporting LRU: | RIU 1 |
| System Description: | 23-00-00 |
| Schematic Diagram: | None |
| Wiring Diagram: | None |
Message Description:
R-IOC-4 bus input absent at L-RIU and not absent at 1-of (L-FMC, R-FMC).
Possible Causes:
- Radio Interface Unit (RIU) No. 1 (A17)
- Associated Wiring
Troubleshooting Tips:
Advisory Wire/Service Bulletin: None
Forum Articles/Infoservice/Newsletter: None
Fault Confirmation Procedure:
- Message# = 32
- Comp Id = A017
- Fault Logged = AIR, TAXI
- Status = FAILED/WIRING
- {Term Definitions}
- DLNK-5 XX 350 01 EXCT XXXX-XXXX XXXX-TXXX XXXX-XXXX 350: 20; FMC #2 INACTIVE
- FMC1-8 1X 350 01 EXCT XXXX-XXXX XXXT-XXXX XXXX-XXXX 350: 21; NO R-IOC-4 BUS INPUT
- 2X 350 10 EXCT XXXX-XXXX XXXT-XXXX XXXX-XXXX 350: 21; NO R-IOC-4 BUS INPUT
Quick Links:
| Removal of the Radio Interface Unit (RIU) | AMM 23-51-21-000-801 |
| Installation of the Radio Interface Unit (RIU) | AMM 23-51-21-400-801 |
| Standard Practices - Replace Wiring | SPM 20-12-00-02 |
| Standard Practices - Wire Repair | SPM 20-12-10-02 |
Troubleshooting Recommendations:
- Suspect failed L-RIU input or wiring.