Nat LD08 Installation And Operation Manual
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SM15 Rev. 4.00 LD08 Lamp Dimmer ManualNov 21, 2003 Page 2-3ENG-FORM: 805-0104.DOTCONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD.An optional external SPST toggle switch can be used to route an external voltage to thelamps if the dimmer should fail.2.5 Post-Installation Checks2.5.1 Voltage/resistance checksDisconnect the LD08 from its mating connector. Check pin 1 for 28 Vdc and pin 17 forground. Ensure that the lamp connections are correct, as mis-wiring may cause apermanent failure of the LD08.Ensure that no short circuits exist on any lamp line (lamp hi to lamp lo), and that nopress-to test lamp holders have been used. These cause one of the lamp lines to beshorted to ground, which may damage the internal circuitry of the LD08.2.5.2 System ChecksInstall the LD08 and power up the ship’s systems. Ensure that operation is correct (DIMLEVEL trimpot or switch), and that all lamps are fully functional. The system cannot beaccepted for service until all annunciations and lamp test/dim operations are correct.Adjust the DIM LEVEL position to a nominal 14 Vdc, or to suit the pilot's preference.2.6 Continued AirworthinessMaintenance of the LD08 is ‘on condition’ only. Periodic maintenance of this product isnot required.2.7 Installation DrawingsDRAWING REV. DESCRIPTION TYPELD08\001\903-0 1.00 LD08 Dimmer 3-DLD08\001\403-0 1.01 Lamp Dimmer- Internal Dimming InterconnectLD08\001\403-1 1.01 Lamp Dimmer - External Dimming InterconnectLD08\001\403-2 1.01 Lamp Dimmer with RS08 - External Dimming InterconnectLD08\001\405-0 1.01 Lamp Dimmer Connector MapLD08\001\922-0 1.00 Lamp Dimmer Mech. InstallationSection 2.0 ends after these Drawings |
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