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CARGO COMPARTMENT DOOR ELECTRICAL CONTROL SYSTEM - FAULT ISOLATION PROCEDURES
_____________________________________________________________________________
TASK 52-35-00-810-801
Fault of the Locking Indication of the AFT Door Actuators
1. Possible Causes
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- INDICATOR LIGHT AFT CARGO DOOR (8MJ)
- SW ACTUATOR 1 AFT CARGO DOOR (2505MJ)
- SW ACTUATOR 2 AFT CARGO DOOR (2506MJ)
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 52-30-00-860-001 Open the FWD or AFT Cargo-Compartment Door with the
Yellow Electric Pump
AMM 52-35-12-000-001 Removal of the Indicator Light 9MJ
AMM 52-35-12-400-001 Installation of the Indicator Light 9MJ
AMM 52-36-18-000-002 Removal of the Proximity Switch
ASM 52-35/01
3. Fault Confirmation
__________________
A. Open the AFT cargo compartment door (referred to as cargo door) and look if the related green indicator light is on (Ref. AMM TASK 52-30-00-860-001).
4. Fault Isolation
_______________
A. If the operation shows that the green indicator light does not come on:
- press in the lamp (self-test of the lamp).
(1) If the green indicator light does not come on:
- do a check for 28 VDC between: the INDICATOR LIGHT AFT CARGO DOOR (8MJ) connectors 1 and 3 (Ref. ASM 52-35/01).
(a) If there is 28 VDC:
- replace the INDICATOR LIGHT AFT CARGO DOOR (8MJ) (Ref. AMM TASK 52-35-12-000-001) and (Ref. AMM TASK 52-35-12-400-001).
(b) If there is no 28 VDC:
- do a check and repair the wiring between: the INDICATOR LIGHT AFT CARGO DOOR (8MJ) connector 1 and GND (Ref. ASM 52-35/01).
「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1 EFF : ALL ∞∞52-35-00∞∞∞∞∞∞∞∞∞∞Page 201
Feb 01/98 CES
(2) If the green the indicator light comes on:
- release the lamp and if the indicator light stays on (the proximity switches of the door actuators operate correctly) no further actions are required.
(3) If the indicator light goes off:
- do a check for 28 VDC between: the SW ACTUATOR 1 AFT CARGO DOOR (2505MJ) connectors A/A and A/C (Ref. ASM 52-35/01)
(a) If there is no 28 VDC:
- do a check and repair the wiring between: the SW ACTUATOR 1 AFT CARGO DOOR (2505MJ) connectors A/A and CB (1MJ) (Ref. ASM 52-35/01) or the SW ACTUATOR 1 AFT CARGO DOOR (2505MJ) connectors A/C and GND (Ref. ASM 52-35/01)
(b) If there is 28 VDC:
- do a check for 28 VDC between: the SW ACTUATOR 2 AFT CARGO DOOR (2506MJ) connectors A/A and A/C (Ref. ASM 52-35/01)
1 if there is no 28 VDC:
_
- do a check for continuity between: the SW ACTUATOR 2 AFT CARGO DOOR (2506MJ) connectors A/A and the SW ACTUATOR 1 AFT CARGO DOOR (2505MJ) connectors A/B (Ref. ASM 52-35/01).
a If there is continuity:
_
- make an electrical connection between: the SW ACTUATOR 1 AFT CARGO DOOR (2505MJ) connectors A/A and A/B (Ref. ASM 52-35/01)
- do a check for 28 VDC between: the SW ACTUATOR 1 AFT CARGO DOOR (2505MJ) connectors A/B and A/C (Ref. ASM 52-35/01)
If there is 28 VDC:
replace the SW ACTUATOR 1 AFT CARGO DOOR (2505MJ) (Ref.
AMM TASK 52-36-18-000-002).
If there is no 28 VDC:
do a check and repair the wiring between:
the SW ACTUATOR 2 AFT CARGO DOOR (2506MJ) connector A/C
and GND (Ref. ASM 52-35/01).
2 If there is 28 VDC:
_
- make an electrical connection between: the SW ACTUATOR 2 AFT CARGO DOOR (2506MJ) connectors A/A and A/B (Ref. ASM 52-35/01)
- do a check for 28 VDC between: the SW ACTUATOR 2 AFT CARGO DOOR (2506MJ) connectors A/B and A/C (Ref. ASM 52-35/01)
「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1 EFF : ALL ∞∞52-35-00∞∞∞∞∞∞∞∞∞∞Page 202
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