03/19/21
Message Overview:
Message Description:
At least 2 of the following are reporting R-CDU-6 bus inactive: NAV2, DME2, VHF2, IOC2.
Possible Causes:
- Control Display Unit (CDU) (A69)
- Associated Wiring
Troubleshooting Tips:
Advisory Wire/Service Bulletin: None
Forum Articles/Infoservice/Newsletter: None
Fault Confirmation Procedure:
- LRU = CDU2 CDU 2
- ATA Chapter = 34-61
- Message# = 11
- Comp Id = A069
- {Term Definitions}
- DME2-5 2X 057 10 EXCT XXXX-XXXX XXXX-XXXX XTXX-XXXX 057: 15;NO R-CDU-6/L-CDU-7 IN
- VHF2-3 2X 057 10 EXCT XXXX-XXXX XXXX-XXXX XTXX-XXXX 057: 15;NO R-CDU-6/L-CDU-7 INPUT
- CDU2-1 2X 350 10 ABSN XXXX-XXXX XXXX-XXXX XXXX-XXXX 350: (A) NO IOC 2X IN
- NAV2-4 2X 057 10 EXCT XXXX-XXXX XXXX-XXXX XTXX-XXXX 057A: 15;NO R-CDU-6/L-CDU-7 IN
Quick Links:
| Removal of the Control Display Unit (CDU) | AMM 34-61-05-000-801 |
| Installation of the Control Display Unit (CDU) | AMM 34-61-05-400-801 |
| Standard Practices - Replace Wiring | SPM 20-12-00-02 |
| Standard Practices - Wire Repair | SPM 20-12-10-02 |
Troubleshooting Recommendations:
- Check CDU output or wiring.