02/16/21
Message Overview:
Message Description:
R-IOC-1 data absent at 2-of (R-PFD, R-MFD, L-PFD, L-MFD).
Possible Causes:
- Adaptive Flight-Display (PFD 1) (A27)
- Adaptive Flight-Display (PFD 2) (A26)
- Adaptive Flight-Display (PFD 1) (A29)
- Adaptive Flight-Display (PFD 2) (A28)
- Junction Box 2 (JB2)
- Right Input/Output Concentrator Unit (IOC) 2 (A4-IOC)
- Integrated-Avionics Processor System (IAPS) Card Cage (ICC) (A4)
- Associated Wiring
Troubleshooting Tips:
Advisory Wire/Service Bulletin: None
Forum Articles/Infoservice/Newsletter: None
Quick Links:
| Removal of the Junction Box JB2 | AMM 24-63-05-000-803 |
| Installation of the Junction Box JB2 | AMM 24-63-05-400-803 |
| Removal of the Integrated-Avionics Processor System (IAPS) Card Cage (ICC) | AMM 31-45-01-000-801 |
| Installation of the Integrated-Avionics Processor System (IAPS) Card Cage (ICC) | AMM 31-45-01-400-801 |
| Removal of the Input/Output Concentrator Unit (IOC) | AMM 31-45-05-000-801 |
| Installation of the Input/Output Concentrator Unit (IOC) | AMM 31-45-05-400-801 |
| Removal of the Adaptive Flight-Display Unit | AMM 31-61-01-000-801 |
| Installation of the Adaptive Flight-Display Unit | AMM 31-61-01-400-801 |
| Standard Practices - Replace Wiring | SPM 20-12-00-02 |
| Standard Practices - Wire Repair | SPM 20-12-10-02 |
Troubleshooting Recommendations:
- Reset R IAPS Circuit Breaker CB2-B6. Is the fault message still present?
- If YES, continue with next step.
- If NO, do close out.
NOTE: Before you open the IAPS circuit breakers, make sure that all Engine FADEC circuit breakers are open. If the Engine FADEC circuit breakers remain closed, Engine Igniters will activate. This can cause injury to persons and damage to equipment. - Swap right IOC with left IOC. Is the fault message still present.
- If YES, continue with next step.
- If NO, replace defective IOC.
- Disconnect one Adaptive Flight-Display Unit at the time (3 must be connected) and verify if the fault message is still present.
- If NO, replace the defective Adaptive Flight-Display Unit.
- If YES, repeat this step until all 4 Adaptive Flight-Display Units are confirmed not causing the fault message.
- Do wiring check between all Adaptive Flight-Display Units, through JB2, and the IAPS Card Cage (ICC).
From To Result Conn. A27P2 - 21 Conn. A2P101 - 15 Conn. A27P2 - 22 Conn. A2P101 - 16 Conn. A29P2 - 21 Conn. A2P101 - 15 Conn. A29P2 - 22 Conn. A2P101 - 16 Conn. A26P2 - 21 Conn. A2P101 - 15 Conn. A26P2 - 22 Conn. A2P101 - 16 Conn. A28P2 - 21 Conn. A2P101 - 15 Conn. A28P2 - 22 Conn. A2P101 - 16 - If the check is satisfactory, continue with next step.
- If the check is not satisfactory, repair defective wire or replace defective JB2.
- Replace Integrated Avionics-Processor System (IAPS) Card Cage (ICC) (A4).
- Do close out.