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B. Procedure 1) Beforehand, perform a check of the regulation system - refer to Paragraph 1. 2) Disconnect and, if necessary, remove the voltage regulator. CAUTION : IF THIS CHECK IS NOT CARRIED OUT IN A LABORATORY, MAKE SURE THE TEST WIRING IS PERFECTLY INSULATED FROM THE AIRCRAFT CIRCUIT. 3) Fabricate the test wiring according to Figure 602. 4) Supply the voltage regulator with a stabilized power supply source adjustable within 24 and 36 V. 5) Vary the supply voltage, check that the voltage regulator triggers at 32 (+ 0.5 ; - 0) VDC and that the test wiring indicator light goes off. NOTE : In case of incorrect operation, replace the regulator (no setting is possible). 6) Remove the test wiring and install the regulator if removed. 7) Connect the regulator. AEAC Validity : With front battery 24-30-00Page 602 (cm) OCT 02 3. CHECK OF LOW VOLTAGE DETECTION SYSTEM - LAMAR VOLTAGE REGULATOR (Figure 603) A. Tools and consumable materials - 1 stabilized power supply source adjustable within 24 and 36 V - Varnish (TB 07-901) B. Procedure 1) Disconnect the battery - refer to 24-30-02. 2) Supply the aircraft mains with a stabilized power supply source adjustable within 24 and 36 V. 3) At a 24 V supply voltage, the generation warning light located on advisory panel (1) is on. 4) Vary the supply voltage and check that the generation warning light goes off between 25.8 and 26.2 VDC. 5) If necessary, adjust adjustable resistor (3) of low voltage detection printed circuit (2) to set the triggering threshold. Once the setting completed, lock adjustable resistor (3) with varnish (TB 07-901). NOTE : Low voltage detection printed circuit (2) is located on fuse panel assembly (4), inspection door 212L - refer to 06-30-00. 6) Connect the battery - refer to 24-30-02. 4. CHECK OF LOW VOLTAGE DETECTION SYSTEM - ELECTROSYSTEMS VOLTAGE REGULATOR A. Tools and consumable materials - 1 stabilized power supply source adjustable within 24 and 36 V B. Procedure 1) Disconnect the battery - refer to 24-30-02. 2) Supply the aircraft mains with a stabilized power supply source adjustable within 24 and 36 V. 3) At a 24 V supply voltage, the generation warning light located on advisory panel (1) is on. 4) Vary the supply voltage and check that the generation warning light goes off at 25.5 VDC ± 0.1. NOTE : In case of incorrect operation, replace the regulator (no setting is possible). 5) Connect the battery - refer to 24-30-02. AEAC Validity : With front battery 24 30-00Page 603 PA) OCT 02 Check of regulation system Figure 601 Vis de reglage Voltage adjustment screw 中国通航网 www.ga.cn 通航翻译 www.aviation.cn 本文链接地址：TB20 MAINTENANCE MANUAL 24 COMMUNICATIONS TB20飞机维护手册 电源(25) |
