a_ If there is 28 VDC:
- replace the SW ACTUATOR 2 FWD CARGO DOOR (2503MJ) (Ref.
AMM TASK 52-36-18-000-002).
_
- do a check and repair the wiring between: the SW ACTUATOR 2 FWD CARGO DOOR (2503MJ) connector A/B and INDICATOR LIGHT FWD CARGO DOOR (9MJ) connector 2 (Ref. ASM 52-35/01) or the SW ACTUATOR 2 FWD CARGO DOOR (2503MJ) connector A/C and GND (Ref. ASM 52-35/01).
B. Do the test as given in Para. 3.A. to make sure that the operation is correct.
5. Close-up
________
A. Put the system back to the serviceable condition.
CARGO COMPARTMENT DOOR HYDRAULIC SYSTEM - FAULT ISOLATION PROCEDURES
____________________________________________________________________
TASK 52-36-00-810-806
FWD and AFT Cargo Compartment Doors do not operate in the Normal Mode
1. Possible Causes
_______________
- LIGHT-AFT DOOR OPEN AND LOCKED (8MJ)
- LIGHT-FWD DOOR OPEN AND LOCKED (9MJ)
- RELAY-SCCB PWR SPLY (3811GX) R - RELAY-TIME (6MJ) R - RELAY-L/G POSITION, SYS 2 (12GB) R - LGCIU-2 (5GA2)
- RELAY-PTU VALVE (1803GL)
- RELAY-GND INTERNAL LEAK TEST (1885GP)
- TIME RELAY (3816GX)
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------
REFERENCE DESIGNATION
-------------------------------------------------------------------------------
52-36-00-810-801 Fault during the Opening Procedure of the FWD
Cargo-Compartment Door
52-36-00-810-802 Fault during the Opening Procedure of the AFT
Cargo-Compartment Door
52-36-00-810-803 Fault during the Closing Procedure of the FWD
Cargo-Compartment Door
52-36-00-810-804 Fault during the Closing Procedure of the AFT
Cargo-Compartment Door
AMM 52-30-00-860-001 Open the FWD or AFT Cargo-Compartment Door with the Yellow Electric Pump
AMM 52-35-12-400-001 Installation of the Indicator Light 9MJ
3. Fault Confirmation
__________________
A. Aircraft Maintenance Configuration
(1) Operate the FWD or AFT cargo compartment door (referred to as cargo door) as required in the normal mode (Ref. AMM TASK 52-30-00-860-001).
NOTE : Make sure that a second person does not operate the other
____
cargo door.
(2) Operate the AFT or FWD cargo door as required in the normal mode (Ref. AMM TASK 52-30-00-860-001).
NOTE : Make sure that a second person does not operate the other
____
cargo door.
4. Fault Isolation
_______________
A. If the fault confirmation gives that both cargo doors do not operate in R normal mode:
- do a check of the CB (1MJ) to make sure that it is closed.
(1) If the CB (1MJ) is opened :
- do a check of the LIGHT-AFT DOOR OPEN AND LOCKED (8MJ) and LIGHT-FWD DOOR OPEN AND LOCKED (9MJ) to make sure that they are satisfactory.
NOTE : If necessary, replace the applicable light (Ref. AMM TASK 52-
____
35-12-400-001).
(2) If the CB (1MJ) is closed :
- put the YELLOW ELEC PUMP P/SW (3804GX) on the cockpit panel 40VU in the ON position and examine if the ELEC PUMP-Y (3075GX) operates.
NOTE : Make sure that the selector of the applicable manual selector
____ valve is operated during the fault isolation procedure.
(3) If the ELEC PUMP-Y (3075GX) does not operate:
- do a trouble shooting of the ELEC PUMP-Y (3075GX) (Ref. TASK 29-24-00-810-801).
(4) If the ELEC PUMP-Y (3075GX) operates:
- push the YELLOW ELEC PUMP P/SW (3804GX) so that the ELEC PUMP-Y (3075GX) does not more operate
- do a check for 28 VDC between the RELAY-SCCB PWR SPLY (3811GX) connector A/A2 and GND (Ref. ASM 29-24/01).
(a) If there is 28 VDC:
- do a check and repair wiring between the RELAY-SCCB PWR SPLY (3811GX) connector A/A2 and the DET-PHASE UNBALANCE, Y ELEC PUMP (3808GX) connector A/F.
(b) If there is no 28 VDC:
- do a check for continuity between the RELAY-SCCB PWR SPLY (3811GX) connectors A/A1 and A/A2 (Ref. ASM 29-24/01).
1 If there is no continuity:
_
- do a check for 28 VDC between the RELAY-SCCB PWR SPLY (3811GX) connector A/X1 and GND (Ref. ASM 29-24/01).
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