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ESDS电子件拆装相关工艺.doc

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ESDS电子件拆装相关工艺

TASK 20-10-07-000-801 2. E/E Box Removal (Figure 201) A. References Reference Title 20-40-12-000-802 ESDS Handling for Metal Encased Unit Removal (P/B 201) 20-40-12-400-804 Conductive Dust Cap and Connector Cover Installation (P/B 201) B. Location Zones Zone Area 117 Electrical and Electronics Compartment - Left 118 Electrical and Electronics Compartment - Right GUN ALL; AIRPLANES WITH REXNORD AEROSPACE MECHANISMS EXTRACTOR C. E/E Box Removal Procedure SUBTASK 20-10-07-860-001 (1) Open the applicable circuit breakers to remove electrical power. SUBTASK 20-10-07-910-001 CAUTION: DO NOT TOUCH THE E/E BOX BEFORE YOU DO THE PROCEDURE FOR DEVICES THAT ARE SENSITIVE TO ELECTROSTATIC DISCHARGE. ELECTROSTATIC DISCHARGE CAN CAUSE DAMAGE TO THE E/E BOX. (2) If the E/E box is sensitive to electrostatic discharge, make sure you do this task: ESDS Handling for Metal Encased Unit Removal, TASK 20-40-12-000-802. SUBTASK 20-10-07-020-001 CAUTION: DO NOT TOUCH THE CONDUCTOR PINS OR OTHER CONDUCTORS ON THE E/E BOX. IF YOU TOUCH THESE CONDUCTORS, ELECTROSTATIC DISCHARGE CAN CAUSE DAMAGE TO THE E/E BOX. (3) Remove the connections from the front of the E/E box if it is necessary. SUBTASK 20-10-07-020-002 Turn the knob on the front hold-down extractor counterclockwise to disengage the clutch. (5) Do these steps to disconnect the front hold-down extractor: NOTE: Apply light pressure down on the E/E box handle while you disconnect the front hold-down extractor. (a) Turn the keeper to align the deep slot with the T-hook. (b) Lower the front hold-down extractor to be clear of the T-hook. SUBTASK 20-10-07-420-001 CAUTION: DO NOT TOUCH THE CONDUCTOR PINS OR OTHER CONDUCTORS ON THE E/E BOX. IF YOU TOUCH THESE CONDUCTORS, ELECTROSTATIC DISCHARGE CAN CAUSE DAMAGE TO THE E/E BOX (6) Install conductive or anti-static caps to the connectors. SUBTASK 20-10-07-020-004 (7) Carefully move the E/E box out from the tray and remove the E/E box. NOTE: Move the front of the E/E box from side to side approxi