02/24/21
Message Overview:
Message Name:
NO L RIU CHAN A OUTPUT
Message Code:
B3-398866
Associated CAS:
| Reporting LRU: | RIU 1 |
| System Description: | 23-00-00 |
| Schematic Diagram: | None |
| Wiring Diagram: | None |
Message Description:
LA-RIU-6 bus data not received at Left IOC.
Possible Causes:
- LA-Radio Interface Unit (RIU) 1 (A17)
- Associated Wiring
Troubleshooting Tips:
Advisory Wire/Service Bulletin: None
Forum Articles/Infoservice/Newsletter: None
Fault Confirmation Procedure:
- Message# = 2
- Comp Id = A017
- Fault Logged = AIR,TAXI
- Status = OFF/NO OUTPUT
- {Term Definitions}
- IOC1-1 1X 350 01 ABSN XXXX-XXXX XXXX-XXXX XXXX-XXXX 350: (A) NO IOC 1X IN;
- RIU1-1 1X 350 01 ABSN XXXX-XXXX XXXX-XXXX XXXX-XXXX 350: (A) NO IOC 1X IN;
- OPT1-83 XX 360 NA EXCT CSU WD-15 XXXX-XXXX TXXX-XXXX 360-15: 8; RIU/CMU1 DATALINK
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 LA-RIU power or failed LA-RIU-6 outputs or wiring.