737NG-26-1 右翼身过热灯亮.doc

A/C NO. 机 号 Editor/Date 编写/日期 Checked By/Date 审核/日期 Approved By/Date 批准/日期 Card No.工单编号 2010-09-06 /2010-10-11 737NG-26-1 Skill 专业 INSP. 必检 Revision 版次 Effectivity 适用飞机 ME YES 01 737NG Title 标题 右翼身过热灯亮 故障信息解释 翼身过热灯亮表明过热控制组件M237探测到了过热、探测线故障或者探测线和控制组件之间线路故障。 The fault occur when the control module, M237 detects a overheat, or a fault with a detector, or the wiring between a detector and the control module. 故障现象 1、故障发生的阶段：地面□ 起飞□ 爬升□ 巡航□ 下降□ 进近□ 落地□ 2、TLB故障记录： 3、故障代码： 4、其它现象： 三．可能的故障原因 1、过热探测线 Fire Detector Element 2、过热探测组件 Control Module, M237. 3、线路 Wiring. 4、管道渗漏 Duct Leak 四． 风险评估和相关维修提示 不能用直流欧姆表或万用表测量探测线电阻，这可能导致测量结果不正确。 Do not use a dc ohmmeter or a multimeter for resistance checks on the sensor loops in the overheat detection system. The sensor level settings can move to a higher value. This can cause an overheat condition that will not be detected. 五．参考手册 FIM26-18-00 Wheel Well Fire, Wing and Body Overheat Detection - Fault Isolation SSM26-12-11 Wheel Well Fire, Wing and Body Overheat Detection 六．特殊工具设备 LCR meter (Inductance, Capacitance, Resistance), COM-1741 refers to the 875B, 878, 878A, or 879 models of LCR meter. The LCR meter must have amaximum test voltage of 1 volt rms. 七．排故工作步骤 JOB DESCRIPTION 工 作 内 容 RESULT 数据结果 WORKER 工作者 INSP. 检查者 A、排故准备 1、飞机上电。 Electrical power is on airplane. 2、确保下列跳开关闭合。 Make sure that these CBs are closed. P6-2 A19 FIRE PROTECTION DETECTION OVHT WW WING BODY P6-2 A21 FIRE PROTECTION DETECTION MASTER WARN CONT P6-3 C13 MASTER CAUTION ANNUNCIATOR CONT 3 B、排故步骤 FAULT ISOLATION PROCEDURE 1、进行过热探测组件自检，读取故障代码。 Do the overheat detection control module BITE procedure, read the fault code. 2、如果出现以下故障代码，则更换探测组件。(AMM26-18-01) If these codes occur, then replace the overheat detection control module. 00 - CONTROL OR POWER SUPPLY FAILURE 01, 02 - 115VAC OR POWER SUPPLY CARD FAILURE 03, 04, 05 - CONTROL CARD FAILURE 98 -