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(WARNING)
RED MESSAGE (CAUTION)
AMBER MESSAGE (ADVISORY)
CYAN MESSAGE (STATUS)
WHITE MESSAGE Require immediate crew attention. These messages are accompanied by flashing master warning, triple chime attenson with or without voice message or dedicated tone. Require immediate crew awareness and future crew action may be required in the form of alternate system selection or performance limitation. These message are accompanied by flashing master caution and a single chime. Indicate safe or normal system operation which require crew awareness, over and above the dark cockpit philosophy. Indicate minor failures or reduction in systems capability, which require no crew action.

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08/24/19

Message Overview:

Fault Message:

HUDC FAULT

Fault Code:

3430003HUD

Associated CAS:

HUD FAIL
(Caution)

Reporting LRU: Head-Up Display (HUD) System
System Description: 34-32-00
Schematic Diagram: 34-32-00 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wiring Diagram: 34-32-05 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Fault Description:

The Head-Up-Display (HUD) System does not receive the high-voltage stroke-video signal.

Possible Causes:

  • Head-Up Flight Display Computer (HFDC) (A250)
  • Head-Up Display (HUD) Electro Optical Projector Unit (OPU) (A251)
  • Associated Wiring

Troubleshooting Tips:

Advisory Wire/Service Bulletin: None

Forum Articles/Infoservice/Newsletter: None

This troubleshooting should also be used if EICAS - HUD FAIL message is shown without any CAIMS messages.

Quick Links:

Removal of the Head-Up-Display (HUD) Computer AMM 34-32-01-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the Head-Up-Display (HUD) Computer AMM 34-32-01-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Removal of the Head-Up-Display (HUD)
Electro-Optical Unit		 AMM 34-32-13-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the Head-Up-Display (HUD)
Electro-Optical Unit		 AMM 34-32-13-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wire Repair - Maintenance Practices - ALL SPM 20-12-10-02 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Troubleshooting Recommendations:

  1. Perform wiring checks for open or short circuit to ground between HUDC and HUD Electro-Optical Unit as follow:

    From To Result
    A250CP1-C1/C2 A251P1-z
    A250CP1-E2 (shield) A251P1-t (shield)
    A250CP1-A1/A2 A251P1-A/B
    A250CP1-G1/G2 A251P1-AA
    A250CP1-J1/J2 A251P1-LL
    A250CP1-J9 A251P1-X
    A250CP1-K10 A251P1-Z
    A250CP1-H10 A251P1-U
    A250CP1-F10 A251P1-Y
    A250CP1-B9 (shield) A251P1-p (shield)
    A250CP1-K9 (shield) A251P1-p (shield)
    A250CP1-F7 (shield) A251P1-p (shield)
    A250CP1-D10 A251P1-V
    A250CP1-E10 A251P1-W
    A250CP1-C9 A251P1-a
    A250CP1-C10 A251P1-R
    A250CP1-E9 A251P1-S
    A250CP1-G9 (shield) A251P1-q (shield)
    A250CP1-D9 A251P1-T

    1. If wiring checks are not good, repair defective wiring as required and do close out.
    2. If wiring checks are good, continue with next step.

  2. Replace HUDC.

    1. If system checks are good, do close out.
    2. If fault remains, continue with next step.

  3. Replace HUD Electro-Optical Unit.
  4. Do close out.

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