06/30/21
Message Overview:
Message Name:
EYE REFERENCE LIGHT UNSERVICEABLE
| Message Code: | 331OBS004 |
| Effectivity: | All |
| System: | Miscellaneous Lighting |
| System Description: | 33-13-00 |
| Schematic Diagram: | 33-13-00 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Wiring Diagram: | 33-13-01 [ Global Express ] [ G5000 ] [ Global XRS ] |
Message Description:
The Eye Reference Light does not come on.
Possible Causes:
- Eye Reference Light (DS43)
- Eye Reference Light Switch (S3)
- Associated Wiring
Troubleshooting Tips:
Advisory Wire/Service Bulletin: None
Forum Articles/Infoservice/Newsletter: None
Quick Links:
| Connect Electrical Power to the Aircraft | AMM 24-00-00-861-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Remove the Electrical Power from the Aircraft | AMM 24-00-00-861-802 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Opening of Non-Thermal Circuit Breakers | AMM 24-00-00-863-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Closing of Non-Thermal Circuit Breakers | AMM 24-00-00-863-802 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Electrical/Electronic Safety Precautions | AMM 24-00-00-910-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Removal of the COCKPIT LIGHTS (INTEGRAL) Control Panel |
AMM 33-11-09-000-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Installation of the COCKPIT LIGHTS (INTEGRAL) Control Panel |
AMM 33-11-09-400-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Removal of the Eye Reference Lights | AMM 33-13-25-000-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Installation of the Eye Reference Lights | AMM 33-13-25-400-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Operational Test of the Eye Reference Lights | AMM 33-13-25-710-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Safety Precautions - Maintenance Practices - ALL | SPM 20-00-01-02 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Wire Repair - Maintenance Practices - ALL | SPM 20-12-10-02 [ Global Express ] [ G5000 ] [ Global XRS ] |
Troubleshooting Recommendations:
- Set the Eye Reference switch to ON on the COCKPIT LIGHTS (INTEGRAL) control panel. Measure the voltage at the connectors SP479 terminal 2 and SP480 terminal 2 for the eye reference light DS43 as follows:
From To Expected Result Result SP479 (T2) SP480 (T2) +28 VDC - If there is no voltage, go to step 3.
- If there is volatge, replace the eye reference light and continue with next step.
- Check if the lights come on.
- If the light comes on, do close out.
- If the light does not come on, continue with next step.
- Disconnect the Integral and Miscellaneous Lights Cockpit Control Panel connectors (AP26P2) and DS43 (SP479). Perform a continuity check for the eye reference light between the pins or terminals that follows and check if there is an open circuit?
From To Result DS43-TBF3710R (SP479) AP26P2-18 DS43-TBF3712B (SP480) GS558 - If there is an open circuit, repair or replace the defective wiring as required. Connect the disconnected connector to AP26 and do close out.
- If there is no open circuit, continue with next step.
- Perform the troubleshooting of COCKPIT LIGHTS (INTEGRAL) CONTROL PANEL MALFUNCTION.
- Do close out.