Message Name:

NO L-CDU-7 BUS INPUT

Message Code:

B3-007264

Associated CAS:

None

L-CDU-7 data absent at R-NAV (VIR/ADF) and not absent at 3-of (R-HF, R-DME, R-VHF, R-TDR); 1 FMC/1 CDU strapped. Not incl: R-HF. Input Pins are 15 and 16.

• R NAV-4000 VOR/LOC/GS/MB/ADF Receiver 2 (VHF NAV) (A048)
• Associated Wiring

Advisory Wire/Service Bulletin: None

Forum Articles/Infoservice/Newsletter: None

Fault Confirmation Procedure:

1. ATA Chapter = 34-51
2. Message# = 10
3. {Term Definitions}

   1. OPT1-31 XX 360 NA EXCT CSU WD-04 XXXX-XXXX XXXX-XFFT 9,10,11: 1 FMC/1 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. VHF2-3 2X 057 10 EXCT XXXX-XXXX XXXX-XXXX XTXX-XXXX 057: 15;NO R-CDU-6/L-CDU-7 INPUT
   4. DME2-5 2X 057 10 EXCT XXXX-XXXX XXXX-XXXX XTXX-XXXX 057: 15;NO R-CDU-6/L-CDU-7 IN
   5. HF2-1 2X 351 10 EXCT XXXX-XXXX XXXX-XXXX XXXX-XTXX 351: 11;NO R-CDU-6/L-CDU-7 INPUT
   6. TDR2-4 2X 350 10 EXCT XXXX-XXXX XXXX-XXXX TXXX-XXXX 350: 16;NO R-CDU-6/L-CDU-7 BUS IN

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