3. Fault Confirmation
__________________
A. Aircraft Maintenance Configuration
(1) Open the FWD cargo compartment door (referred to as cargo door) in the normal mode (Ref. AMM TASK 52-30-00-860-001).
NOTE : Make sure that a second person does not operate the AFT cargo
____
door.
(2) Open the AFT cargo door in the normal mode (Ref. AMM TASK 52-30-00-860-001).
NOTE : Make sure that a second person does not operate the FWD cargo
____
door.
4. Fault Isolation
_______________
R **ON A/C 001-049, 101-105,
A. If the fault confirmation gives that only the FWD cargo door does not open and the ELEC PUMP-Y (3075GX) does not operate (fault in the door control system):
- do a check for 28 VDC between: the RELAY-TIME (6MJ) connector A/B1 and GND (Ref. ASM 52-35/01).
NOTE : Make sure that the selector of the manual selector valve 2501MJ is
____ set to OPEN during the fault isolation procedure.
(1) If there is no VDC:
- do a check for 28VDC between the RELAY-TIME (6MJ) connector A/C1 and GND (Ref. ASM 52-35/01).
(a) If there is 28 VDC:
- do a check for 28 VDC between the RELAY-TIME (6MJ) connector A/X1 and GND (Ref. ASM 52-35/01).
1 If there is no 28 VDC:
_
- do a check and repair the wiring as necessary betwen: the RELAY-TIME (6MJ) connector A/X1 and the CB (1MJ) (Ref. ASM 52-35/01).
2 If there is 28 VDC:
_
- replace the RELAY-TIME (6MJ).
(b) If there is no 28 VDC:
- do a check for 28 VDC between: the RELAY-L/G POSITION, SYS 2 (12GB) connector A/D1 and A/D2 (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 ∞∞52-36-00∞∞∞∞∞∞∞∞∞∞Page 206
May 01/05 CES 1 If there is 28 VDC:
_
- do a check for continuity: the RELAY-L/G POSITION, SYS 2 (12GB) connector A/D1 and A/D2 (Ref. ASM 52-35/01).
2 If there is continuity:
_
- do a check and repair the wiring as necessary between: the RELAY-TIME (6MJ) connector A/C1 and the RELAY-L/G POSITION, SYS 2 (12GB) connector A/D2 (Ref. ASM 52-35/01).
3 If there is no continuity:
_
- replace the RELAY-L/G POSITION, SYS 2 (12GB)
4 If there is no 28 VDC:
_
- do a check and repair the wiring as necessary between: the LGCIU-2 (5GA2) connector AA/8A and the RELAY-L/G POSITION, SYS 2 (12GB) connector A/D1 (Ref. ASM 52-35/01).
(2) If the fault continues:
- do a check for a GND signal at the LGCIU-2 (5GA2) connector AA/9A (Ref. ASM 52-35/01).
(a) If there is no GND signal:
- do a check and repair each part of the wiring between the LGCIU-2 (5GA2) connector AA/9A and the connector A/A of 7550VC (Ref. ASM 52-35/01).
1 If the fault continues:
_
- do a check and repair the wiring between: the connector A/A of 7550VC and GND (Ref. ASM 52-35/01).
(3) If the fault continues:
- do a check for 28 VDC between: the LGCIU-2 (5GA2) connector AA/7A and GND (Ref. ASM 52-35/01).
(a) If there are no 28 VDC:
- do a check for continuity between: the MAN SEL VALVE-FWD CARGO DOOR (2501MJ) connector A/B and the LGCIU-2 (5GA2) connector AA/7A (Ref. ASM 52-35/01).
1 If there is no continuity:
_
- do a check and repair the wiring between: the MAN SEL VALVE-FWD CARGO DOOR (2501MJ) connector A/B and the LGCIU-2 (5GA2) connector AA/7A (Ref. ASM 52-35/01).
2 If there is continuity:
_
- do a check for 28 VDC between: the MAN SEL VALVE-FWD CARGO DOOR (2501MJ) connector A/A and GND (Ref. ASM 52-35/01).
「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1R EFF : 001-049, 101-105, ∞∞52-36-00∞∞∞∞∞∞∞∞∞∞Page 207
May 01/05 CES 3 If there is no 28 VDC:
_
- do a check and repair the wiring as necessary between:
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