B3-007263 - NO R-CDU-6 BUS INPUT [NAV 2]

Quick Links

03/25/21

Message Overview:

Message Name:

NO R-CDU-6 BUS INPUT

Message Code:

B3-007263

Associated CAS:

None

Reporting LRU:	NAV 2
System Description:	34-51-00
Schematic Diagram:	34-51-00
Wiring Diagram:	34-51-05

Message Description:

R-CDU-6 data absent at R-NAV (VIR/ADF) and not absent at 2-of (R-IOC, R-DME, R-VHF, R-TDR); 2 FMC/2 CDU strapped. Not incl: R-HF. Input Pins are 15 and 16.

Possible Causes:

R VHF Navigation Receiver 2 (ADF VIR) (A48)
Associated Wiring

Troubleshooting Tips:

Advisory Wire/Service Bulletin: None

Forum Articles/Infoservice/Newsletter: None

Fault Confirmation Procedure:

ATA Chapter = 34-51
Message# = 9
{Term Definitions}
1. OPT1-33 XX 360 NA EXCT CSU WD-04 XXXX-XXXX XXXX-XFTT 9,10,11: 2 FMC/2 CDU STR
2. NAV2-4 2X 057 10 EXCT XXXX-XXXX XXXX-XXXX XTXX-XXXX 057A: 15;NO R-CDU-6/L-CDU-7 IN
3. NAV2-10 2X 057 10 EXCT XXXX-XXXX XXXX-XXXX XTXX-XXXX 057V: 15;NO R-CDU-6 IN TO VIR
4. CDU2-1 2X 350 10 ABSN XXXX-XXXX XXXX-XXXX XXXX-XXXX 350: (A) NO IOC 2X IN
5. DME2-5 2X 057 10 EXCT XXXX-XXXX XXXX-XXXX XTXX-XXXX 057: 15;NO R-CDU-6/L-CDU-7 IN
6. VHF2-3 2X 057 10 EXCT XXXX-XXXX XXXX-XXXX XTXX-XXXX 057: 15;NO R-CDU-6/L-CDU-7 INPUT
7. TDR2-4 2X 350 10 EXCT XXXX-XXXX XXXX-XXXX TXXX-XXXX 350: 16;NO R-CDU-6/L-CDU-7 BUS IN

Quick Links:

Removal of the VHF Navigation Receiver	AMM 34-51-01-000-801
Installation of the VHF Navigation Receiver	AMM 34-51-01-400-801
Standard Practices - Replace Wiring	SPM 20-12-00-02
Standard Practices - Repair Wiring	SPM 20-12-10-02

Troubleshooting Recommendations:

Suspect failed R-NAV input or wiring. Not incl: R-HF. Input Pins are 15 and 16.