ESDS电子部件拆装相关工艺.doc

TASK 20-10-07-000-8012. E/E Box Removal(Figure 201)A. ReferencesReference Title20-40-12-000-802 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 ZonesZone Area117 Electrical and Electronics Compartment - Left118 Electrical and Electronics Compartment - RightGUN ALL; AIRPLANES WITH REXNORD AEROSPACE MECHANISMS EXTRACTORC. E/E Box Removal ProcedureSUBTASK 20-10-07-860-001(1) Open the applicable circuit breakers to remove electrical power.SUBTASK 20-10-07-910-001CAUTION: DO NOT TOUCH THE E/E BOX BEFORE YOU DO THE PROCEDURE FOR DEVICESTHAT ARE SENSITIVE TO ELECTROSTATIC DISCHARGE. ELECTROSTATICDISCHARGE 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: ESDSHandling for Metal Encased Unit Removal, TASK 20-40-12-000-802.SUBTASK 20-10-07-020-001CAUTION: DO NOT TOUCH THE CONDUCTOR PINS OR OTHER CONDUCTORS ON THE E/EBOX. IF YOU TOUCH THESE CONDUCTORS, ELECTROSTATIC DISCHARGE CANCAUSE 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(4) 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 fronthold-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 20-10-07-420-001CAUTION: DO NOT TOUCH THE CONDUCTOR PINS OR OTHER CONDUCTORS ON THE E/EBOX. IF YOU TOUCH THESE CONDUCTORS, ELECTROSTATIC DISCHARGE CANCAUSE 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 approximately 1/8 inch (3 mm) to helpdisconnect the E/E box from the electrical connector.SUBTASK 20-10-07-420-002(8) If the E/E box is not sensitive to electrostatic discharge, put protective covers on the electricalconnector(s).SUBTASK 20-10-07-420-003(9) If the E/E box is sensitive to electrostatic discharge, do this task: Conductive Dust Cap andConnector Cover Installation, TASK 20-40-12-400-804.GUN ALL; AIRPLANES WITH HOLLINGSEAD EXTRACTORD. E/E Box Removal ProcedureSUBTASK 20-10-07-860-002(1) Open the applicable circuit breakers to remove electrical power.SUBTASK 20-10-07-910-002CAUTION: DO NOT TOUCH THE E/E BOX BEFORE YOU DO THE PROCEDURE FOR DEVICESTHAT ARE SENSITIVE TO ELECTROSTATIC DISCHARGE. ELECTROSTATICDISCHARGE 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: ESDSHandling for Metal Encased Unit Removal, TASK 20-40-12-000-802.SUBTASK 20-10-07-020-005CAUTION: DO NOT TOUCH THE CONDUCTOR PINS OR OTHER CONDUCTORS ON THE E/EBOX. IF YOU TOUCH THESE CONDUCTORS, ELECTROSTATIC DISCHARGE CANCAUSE DAMAGE TO THE E/E BOX.(3) Remove the connections from the front of the E/E box, if it is necessary.SUBTASK 20-10-07-020-006(4) Turn the knob on the front hold-down extractor counterclockwise until you can see the redband.P(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 fronthold-down extractor.(a) Turn the latch counterclockwise to disengage the front hold-down extractor from theT-hook.(b) Lower the front hold-down extractor to be clear of the T-hook.SUBTASK 20-10-07-020-008CAUTION: DO NOT TOUCH THE CONDUCTOR PINS OR OTHER CONDUCTORS ON THE E/EBOX. IF YOU TOUCH THESE CONDUCTORS, ELECTROSTATIC DISCHARGE CANCAUSE DAMAGE TO THE E/E BOX.(6) Carefully move the E/E box out from the tray and remove the E/E box.NOTE: Shake the front of the E/E box from side to side approximately 1/8 inch (3 mm) to helpdisconnect the E/E box from the electrical connector.SUBTASK 20-10-07-420-004(7) If the E/E box is not sensitive to electrostatic discharge, put protective covers on the electricalconnector(s).SUBTASK 20-10-07-420-005(8) If the E/E box is sensitive to electrostatic discharge, do this task: Conductive Dust Cap andConnector Cover Installation, TASK 20-40-12-400-804.GUN ALL; AIRPLANES WITH HARTWELL EXTRACTORE. E/E Box Removal ProcedureSUBTASK 20-10-07-860-003(1) Open the applicable circuit breakers to remove electrical power.SUBTASK 20-10-07-910-003CAUTION: DO NOT TOUCH THE E/E BOX BEFORE YOU DO THE PROCEDURE FOR DEVICESTHAT ARE SENSITIVE TO ELECTROSTATIC DISCHARGE. ELECTROSTATICDISCHARGE 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: ESDSHandling for Metal Encased Unit Removal, TASK 20-40-12-000-802.SUBTASK 20-10-07-020-009CAUTION: DO NOT TOUCH THE CONDUCTOR PINS OR OTHER CONDUCTORS ON THE E/EBOX. IF YOU TOUCH THESE CONDUCTORS, ELECTROSTATIC DISCHARGE CANCAUSE DAMAGE TO THE E/E BOX.(3) Remove the connections from the front of the E/E box, if it is necessary.SUBTASK 20-10-07-020-010(4) Turn the knob on the front hold-down extractor counterclockwise to disengage the clutch.SUBTASK 20-10-07-020-011(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 fronthold-down extractor.(a) Compress the keeper to disengage the extractor from the T-hook.(b) Lower the front hold-down extractor to be clear of the T-hook.CAUTION: DO NOT TOUCH THE CONDUCTOR PINS OR OTHER CONDUCTORS ON THE E/EBOX. IF YOU TOUCH THESE CONDUCTORS, ELECTROSTATIC DISCHARGE CANCAUSE DAMAGE TO THE E/E BOX.(6) Carefully move the E/E box out from the tray and remove the E/E box.NOTE: Shake the front of the E/E box from side to side approximately 1/8 inch (3 mm) to helpdisconnect the E/E box from the electrical connector.SUBTASK 20-10-07-420-006(7) If the E/E box is not sensitive to electrostatic discharge, put protective covers on the electricalconnector(s).SUBTASK 20-10-07-420-007(8) If the E/E box is sensitive to electrostatic discharge, do this task: Conductive Dust Cap andConnector Cover Installation, TASK 20-40-12-400-804.G. E/E Box Removal ProcedureSUBTASK 20-10-07-040-002(1) Open the applicable circuit breakers to remove electrical power.SUBTASK 20-10-07-580-002CAUTION: DO NOT TOUCH THE UNIT BEFORE YOU DO THE PROCEDURE FOR DEVICESTHAT ARE SENSITIVE TO ELECTROSTATIC DISCHARGE. ELECTROSTATICDISCHARGE CAN CAUSE DAMAGE TO THE UNIT.(2) If the E/E box is sensitive to electrostatic discharge, make sure you do this task: ESDSHandling for Metal Encased Unit Removal, TASK 20-40-12-000-802.SUBTASK 20-10-07-020-030CAUTION: DO NOT TOUCH THE CONNECTOR PINS OR OTHER CONDUCTORS ON THEUNIT. IF YOU TOUCH THESE CONDUCTORS, ELECTROSTATIC DISCHARGE CANCAUSE DAMAGE TO THE UNIT.(3) Remove the connections from the front of the E/E box, if it is necessary.SUBTASK 20-10-07-020-031(4) To unlock the Barry-type retaining fasteners, turn the fastener counter-clockwise.(a) Pull and turn the fasteners counter-clockwise, if it is necessary.SUBTASK 20-10-07-020-032CAUTION: DO NOT TOUCH THE CONNECTOR PINS OR OTHER CONDUCTORS ON THEUNIT. IF YOU TOUCH THESE CONDUCTORS, ELECTROSTATIC DISCHARGE CANCAUSE DAMAGE TO THE UNIT.(5) Carefully move the E/E box out from the tray and remove the E/E box.NOTE: Shake the front of the E/E box from side to side approximately in. (3 mm) to helpdisconnect the E/E box from the electrical connector.SUBTASK 20-10-07-420-048(6) If the E/E box is not sensitive to electrostatic discharge, put protective covers on the electricalconnector(s).(7) If the E/E box is sensitive to electrostatic discharge, do this task: Conductive Dust Cap andConnector Cover Installation, TASK 20-40-12-400-804.(a) Replace components if they are damaged, refer to SWPM 20-30-00 Electrical Connectionof Equipment.SUBTASK 20-10-07-420-008(6) Carefully start to install the E/E box into the tray.NOTE: For easier installation of the E/E box, lift the front of the E/E box approximately 1/8inch (3 mm) above the tray surface.SUBTASK 20-10-07-420-009(7) Continue to move the E/E box into the tray and engage the electrical connector.NOTE: The hold-down extractor mechanism does not always provide enough force tocompletely engage the E/E box with the electrical connector. The E/E box must first befully engaged and seated before using the hold-down extractor mechanism to securethe installation.NOTE: The E/E box will engage with the electrical connector easier if you move the front ofthe E/E box from side to side approximately 1/8 inch (3 mm). While you shake the box,apply a strong and steady horizontal force to the front of the E/E box.SUBTASK 20-10-07-210-018(8) Make sure the electrical connector is engaged.SUBTASK 20-10-07-210-019(9) Move the E/E box to make sure of a tight fit.SUBTASK 20-10-07-820-001(10) Turn the keeper to put the deep slot near to and aligned with the T-hook.SUBTASK 20-10-07-420-019(11) Put the extractor on the T-hook and turn the keeper 180 degrees.SUBTASK 20-10-07-420-020(12) To tighten the front hold-down extractor, turn the knob clockwise until the clutch engages fully.NOTE: You will feel clicks while you turn the knob.SUBTASK 20-10-07-420-010(13) Tighten the extractor.SUBTASK 20-10-07-420-041(14) Re-tighten the extractor.(a) Press firmly on the front of the unit.NOTE: This is to make sure the unit is fully seated before re-tightening.(b) Re-tighten the extractor screws.SUBTASK 20-10-07-420-021(15) Install the connections to the front of the E/E box, if it is necessary.SUBTASK 20-10-07-860-005(16) Close the applicable circuit breakers for the E/E box.GUN ALL; AIRPLANES WITH HOLLINGSEAD EXTRACTORD. E/E Box Installation ProcedureSUBTASK 20-10-07-860-006(1) Make sure the applicable circuit breakers for the E/E box are open.(2) Compare the quantity and location of the rubber plugs with the decal installed on the tray, ifapplicable.NOTE: Each rubber plug location will agree with a block dot on the decal installed on the tray.(a) Install or remove rubber plugs if it is necessary.SUBTASK 20-10-07-910-005(3) If the E/E box is sensitive to electrostatic discharge, do these steps:CAUTION: DO NOT TOUCH THE E/E BOX BEFORE YOU DO THE PROCEDURE FORDEVICES THAT ARE SENSITIVE TO ELECTROSTATIC DISCHARGE.ELECTROSTATIC DISCHARGE CAN CAUSE DAMAGE TO THE E/E BOX.(a) Do this task: ESDS Handling for Metal Encased Unit Installation,TASK 20-40-12-400-802.(b) Do this task: Conductive Dust Cap and Conductor Cover Removal,TASK 20-40-12-000-804.SUBTASK 20-10-07-020-014(4) If the E/E box is not sensitive to electrostatic discharge, remove the protective covers from theelectrical connector(s).SUBTASK 20-10-07-210-006CAUTION: MAKE SURE THE ELECTRICAL PINS AND CONTACTS ON THE E/E BOXCONNECTOR AND TRAY CONNECTOR ARE NOT BENT OR DAMAGED.INSTALLATION OF THE E/E BOX WITH DAMAGED PINS OR CONTACTS CANCAUSE DAMAGE TO THE E/E BOX, THE TRAY ELECTRICAL CONNECTOR, ORTHE SYSTEM COMPONENTS.(5) Visually make sure the electrical pins of the E/E box and tray connector are not bent ordamaged.(a) Replace components if they are damaged.SUBTASK 20-10-07-420-011(6) Carefully start to install the box into the tray.NOTE: For easier installation of the E/E box, lift the front of the E/E box approximately about1/8 inch (3 mm) above the tray surface.SUBTASK 20-10-07-420-012(7) Continue to move the box into the tray and engage the electrical connector.NOTE: The E/E box will engage with the electrical connector easier if you shake the front ofthe E/E box from side to side approximately 1/8 inch (3 mm). While you shake the box,apply a light horizontal force to the front of the E/E box.SUBTASK 20-10-07-820-002(8) Align the front hold-down extractor with the T-hook.SUBTASK 20-10-07-420-022(9) Put the extractor on the T-hook and turn the latch clockwise.SUBTASK 20-10-07-420-023(10) Turn the knob on the front hold-down extractor clockwise until you cannot see the red bandand the clutch engages.(11) Shake the E/E box to make sure of a tight fit.SUBTASK 20-10-07-420-013(12) Tighten the extractor.SUBTASK 20-10-07-420-042(13) Re-tighten the extractor.(a) Press firmly on the front of the unit.NOTE: This is to make sure the unit is fully seated before re-tightening.(b) Re-tighten the extractor screws.SUBTASK 20-10-07-210-008(14) Make sure the electrical connector is engaged.SUBTASK 20-10-07-420-024(15) Install the connections to the front of the E/E box, if it is necessary.SUBTASK 20-10-07-860-007(16) Close the applicable circuit breakers for the E/E box.GUN ALL; AIRPLANES WITH HARTWELL EXTRACTORE. E/E Box InstallationSUBTASK 20-10-07-860-008(1) Make sure the applicable circuit breakers for the E/E box are open.SUBTASK 20-10-07-210-009(2) Compare the quantity and location of the rubber plugs with the decal installed on the tray, ifapplicable.NOTE: Each rubber plug location will agree with a block dot on the decal installed on the tray.(a) Install or remove rubber plugs if it is necessary.SUBTASK 20-10-07-910-006(3) If the E/E box is sensitive to electrostatic discharge, do these steps:CAUTION: DO NOT TOUCH THE E/E BOX BEFORE YOU DO THE PROCEDURE FORDEVICES THAT ARE SENSITIVE TO ELECTROSTATIC DISCHARGE.ELECTROSTATIC DISCHARGE CAN CAUSE DAMAGE TO THE E/E BOX.(a) Do this task: ESDS Handling for Metal Encased Unit Installation,TASK 20-40-12-400-802.(b) Do this task: Conductive Dust Cap and Conductor Cover Removal,TASK 20-40-12-000-804.SUBTASK 20-10-07-020-015(4) If the E/E box is not sensitive to electrostatic discharge, remove the protective covers from theelectrical connector(s).CAUTION: MAKE SURE THE ELECTRICAL PINS AND CONTACTS ON THE E/E BOXCONNECTOR AND TRAY CONNECTOR ARE NOT BENT OR DAMAGED.INSTALLATION OF THE E/E BOX WITH DAMAGED PINS OR CONTACTS CANCAUSE DAMAGE TO THE E/E BOX, THE TRAY ELECTRICAL CONNECTOR, ORTHE SYSTEM COMPONENTS.(5) Visually make sure the electrical pins of the E/E box and tray connector are not bent ordamaged.(a) Replace components if they are damaged.SUBTASK 20-10-07-420-014(6) Carefully start to install the box into the tray.NOTE: For easier installation of the E/E box, lift the front of the E/E box approximately about1/8 inch (3 mm) above the tray surface.SUBTASK 20-10-07-420-015(7) Continue to move the box into the tray and engage the electrical connector.NOTE: The E/E box will engage with the electrical connector easier if you shake the front ofthe E/E box from side to side approximately 1/8 inch (3 mm). While you shake the box,apply a light horizontal force to the front of the E/E box.SUBTASK 20-10-07-820-003(8) Compress the keeper to engage the T-hook on the E/E box.SUBTASK 20-10-07-420-025(9) To tighten the front hold-down extractors, turn the knob clockwise until the clutch engages fully.NOTE: You will feel clicks while you turn the knob.SUBTASK 20-10-07-210-011(10) Move the E/E box to make sure of a tight fit.SUBTASK 20-10-07-420-016(11) Tighten the extractor.SUBTASK 20-10-07-420-043(12) Re-tighten the extractor.(a) Press firmly on the front of the unit.NOTE: This is to make sure the unit is fully seated before re-tightening.(b) Re-tighten the extractor screws.SUBTASK 20-10-07-210-012(13) Make sure the electrical connector is engaged.SUBTASK 20-10-07-420-026(14) Install the connections to the front of the E/E box, if it is necessary.SUBTASK 20-10-07-860-009(15) Close the applicable circuit breakers for the E/E box.PJGUN ALLG. E/E Box Installation ProcedureSUBTASK 20-10-07-040-001(1) Make sure that the applicable circuit breakers for the E/E box are open.SUBTASK 20-10-07-200-001(2) Compare the quantity and location of the rubber plugs with the decal installation on the tray, ifapplicable.NOTE: Each rubber plug location will agree with a black dot on the decal installed on the tray.(a) Install or remove rubber plugs if it is necessary.SUBTASK 20-10-07-580-001(3) If the E/E box is sensitive to electrostatic discharge, do the steps that follow.CAUTION: DO NOT TOUCH THE UNIT BEFORE YOU DO THE PROCEDURE FORDEVICES THAT ARE SENSITIVE TO ELECTROSTATIC DISCHARGE.ELECTROSTATIC DISCHARGE CAN CAUSE DAMAGE TO THE UNIT.(a) Do this task: ESDS Handling for Metal Encased Unit Installation,TASK 20-40-12-400-802.(b) Do this task: Conductive Dust Cap and Conductor Cover Removal,TASK 20-40-12-000-804.SUBTASK 20-10-07-020-029(4) If the E/E box is sensitive to electrostatic discharge, remove the protective covers from theelectrical connector(s).SUBTASK 20-10-07-200-002CAUTION: MAKE SURE THAT THE ELECTRICAL PINS ON THE E/E BOX CONNECTOR ANDTRAY CONNECTOR ARE NOT BENT OR DAMAGED. IF YOU INSTALL THE E/E BOXWITH DAMAGED PINS, DAMAGE TO THE E/E BOX, TRAY ELECTRICALCONNECTOR, OR SYSTEM COMPONENTS CAN OCCUR.(5) Visually make sure that the electrical pins of the E/E box and tray connector are not bent ordamaged.(a) Replace components if they are damaged, refer to SWPM 20-30-00 Electrical Connectionof Equipment.SUBTASK 20-10-07-420-044(6) Carefully start to install the E/E box into the tray.(a) For easier installation of the E/E box, lift the front of the E/E box approximately in.(3 mm) above the tray surface.(7) Continue to move the E/E box into the tray and engage the electrical connector.NOTE: The hold-down extractor mechanism does not always provide enough