R (3) Do a check of a ground signal or an open circuit at the discrete
R inputs DSI 40, 42 and 32 of the ELAC 1 rack when the hydraulic
R pressure state is low (Ref. ASM 27-92/27).
R (a) If a ground signal or an open circuit is found at one discrete
R input:
R - repair the related wiring between the ELAC 1 and the first
R terminal block.
R (4) Install all the removed ELAC's and SEC's.
R D. If the voltage is less than 25.5 V and the problem does not come from the
R Spoiler Elevator Computers (SEC) and from the ELAC 1 hydraulic
R discrete-inputs:
- do the BITE test of the EFCS (Ground scanning) (Ref. AMM TASK 27-96-00-740-001).
NOTE : Do this test procedure with the hydraulic systems not pressurized.
____
(1) If there is a maintenance message related to these pressure switches:
- PRESS SW-B HYD, FLT CTL (10CE1),
- PRESS SW-G HYD, FLT CTL (10CE2),
- PRESS SW-Y HYD, FLT CTL (10CE3),
- PRESS SW-FLT CTL, G (1151GN),
- PRESS SW-FLT CTL, B (2151GN),
- PRESS SW-FLT CTL, Y (3151GN). do the related trouble shooting (Ref. TSM 27 PB 101)
(2) If there is no maintenance message related to the hydraulic pressure switches:
- in the cockpit, on the ELEC panel 35VU, release the BAT1 pushbutton switch and put a warning notice(s) to tell persons not to operate the battery 1,
- in the battery power center 105VU, disconnect the cable between the BAT1 shunt (3PB1) and the ground: for this, remove the bolt and washer from the shunt (Ref. ASM 24-38/01),
- connect an ammeter to the disconnected cable and the disconnected terminal of the shunt: make sure that the polarities of the tool are correct,
- do a check of the current value.
(a) If the current is more than 400 mA:
- open the circuit breaker 16CE1 while you monitor the current value (Ref. ASM 27-92/02).
1 If the current value suddenly falls below 400mA when you open
_
the circuit breaker:
- disconnect one by one the electrical connectors from these pressure switches (Ref. ASM 27-92/27):
- PRESS SW-FLT CTL, B (2151GN) (Ref. AMM TASK 29-32-12-000-002),
「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 ∞∞24-38-00∞∞∞∞∞∞∞∞∞∞Page 277
May 01/01 CES
- PRESS SW-FLT CTL, Y (3151GN) (Ref. AMM TASK 29-32-12-000-003),
- PRESS SW-FLT CTL, G (1151GN) (Ref. AMM TASK 29-32-12-000-001),
- PRESS SW-B HYD, FLT CTL (10CE1) (Ref. AMM TASK 27-92-17-000-003),
- PRESS SW-Y HYD, FLT CTL (10CE3) (Ref. AMM TASK 27-92-17-000-002),
- PRESS SW-G HYD, FLT CTL (10CE2) (Ref. AMM TASK 27-92-17-000-001),
while you monitor the current value after you closed the
circuit breaker 16CE1.
a If after you disconnected the PRESS SW-FLT CTL, B (2151GN)
_ the current value is less than 400mA:
- replace the PRESS SW-FLT CTL, B (2151GN), (Ref. AMM TASK 29-32-12-000-002) (Ref. AMM TASK 29-32-12-400-002) and connect all the electrical connectors that you disconnected.
b If after you disconnected the PRESS SW-FLT CTL, Y (3151GN),
_ the current value is less than 400mA:
- replace the PRESS SW-FLT CTL, Y (3151GN), (Ref. AMM TASK 29-32-12-000-003) (Ref. AMM TASK 29-32-12-400-003) and connect all the electrical connectors that you disconnected.
c If after you disconnected PRESS SW-FLT CTL, G (1151GN), the
_ current value is less than 400mA:
- replace the PRESS SW-FLT CTL, G (1151GN), (Ref. AMM TASK 29-32-12-000-001) (Ref. AMM TASK 29-32-12-400-001) and connect all the electrical connectors that you disconnected.
d If after you disconnected the PRESS SW-B HYD, FLT CTL
_ (10CE1), the current value is less than 400mA:
- replace the PRESS SW-B HYD, FLT CTL (10CE1), (Ref. AMM TASK 27-92-17-000-003) (Ref. AMM TASK 27-92-17-400-003) and connect all the electrical connectors that you disconnected.
e If after you disconnected the PRESS SW-Y HYD, FLT CTL
_ (10CE3), the current value is less than 400mA:
- replace the PRESS SW-Y HYD, FLT CTL (10CE3), (Ref. AMM TASK 27-92-17-000-002) (Ref. AMM TASK 27-92-17-400-002) and connect all the electrical connectors that you disconnected.
f If after you disconnected the PRESS SW-G HYD, FLT CTL
_ (10CE2), the current value is less than 400mA:
- replace the PRESS SW-G HYD, FLT CTL (10CE2),
「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 ∞∞24-38-00∞∞∞∞∞∞∞∞∞∞Page 278
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