(b)
If no sensing element is damaged:
-disconnect the connector between the sensing elements 56HF and 55HF
-connect the LOOP CONTROLLER (9240SI) between the connector 1HA2-AA/5D and the ground
-do a check of the impedance read on the LOOP CONTROLLER (9240SI).
1_ If the impedance is less than 3 KOhms:
- disconnect the connector between the sensing elements 60HF
and 59HF
- do a check of the impedance read on the LOOP CONTROLLER
(9240SI).
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a
_
If the impedance is less than 3 KOhms:
-disconnect the connector between the sensing elements 63HF and 62HF
-do a check of the impedance read on the LOOP CONTROLLER (9240SI). . if the impedance is less than 3 KOhms:
-disconnect the connector between the cable 57HF and the
sensing element 63HF
-do a check of the impedance read on the LOOP CONTROLLER
(9240SI)
* if the impedance is less than 3 KOhms:
-replace the CABLE-CONNECTING (57HF) (Ref. AMM TASK 36-22-18-000-001) and (Ref. AMM TASK 36-22-18-400-001)
-
do a check of the impedance read on the LOOP CONTROLLER
(9240SI).
** if the impedance is less than 3 KOhms:
-
do a check and repair the wiring between the pin AA/5D
of the BMC2 (1HA2) and the cable 57HF
-connect all the cables or connectors disconnected
-disconnect the LOOP CONTROLLER (9240SI) from the BMC2
connector
-install the BMC2 (1HA2) (Ref. AMM TASK 36-11-34-400-001)
-refer to Para. 4.C.
** if the impedance is more than 3 KOhms:
-connect all the cables or connectors disconnected
-disconnect the LOOP CONTROLLER (9240SI) from the BMC2 connector
-install the BMC2 (1HA2) (Ref. AMM TASK 36-11-34-400-001)
-refer to Para. 4.C.
* if the impedance is more than 3 KOhms:
-replace the ELEMENT-OVERHEAT SENSING (63HF) (Ref. AMM TASK 36-22-18-000-001) and (Ref. AMM TASK 36-22-18-400-001)
-connect all the cables or connectors disconnected
-disconnect the LOOP CONTROLLER (9240SI) from the BMC2 connector
-install the BMC2 (1HA2) (Ref. AMM TASK 36-11-34-400-001)
-refer to Para. 4.C.
. if the impedance is more than 3 KOhms:
-disconnect the connector between the sensing elements 62HF and 61HF
-connect the connector between the sensing elements 63HF and 62HF
-do a check of the impedance read on the LOOP CONTROLLER (9240SI).
* if the impedance is less than 3 KOhms:
-replace the ELEMENT-OVERHEAT SENSING (62HF) (Ref. AMM TASK 36-22-18-000-001) and (Ref. AMM TASK 36-22-18-400-001)
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b
_
-connect all the cables or connectors disconnected
-disconnect the LOOP CONTROLLER (9240SI) from the BMC2 connector
-install the BMC2 (1HA2) (Ref. AMM TASK 36-11-34-400-001)
-refer to Para. 4.C.
* if the impedance is more than 3 KOhms:
-disconnect the connector between the sensing elements 61HF and 60HF
-connect the connector between the sensing elements 62HF and 61HF
-do a check of the impedance read in the LOOP CONTROLLER (9240SI). ** if the impedance is less than 3 KOhms:
-replace the OVHT SENS ELEMENT (61HF) (Ref. AMM TASK 36-22-18-000-001) and (Ref. AMM TASK 36-22-18-400-001)
-connect all the cables or connectors disconnected
-disconnect the LOOP CONTROLLER (9240SI) from the BMC2 connector
-install the BMC2 (1HA2) (Ref. AMM TASK 36-11-34-400-001)
-refer to Para. 4.C.
** if the impedance is more than 3 KOhms:
-replace the ELEMENT-OVERHEAT SENSING (60HF) (Ref. AMM TASK 36-22-18-000-001) and (Ref. AMM TASK 36-22-18-400-001)
-connect all the cables or connectors disconnected
-disconnect the LOOP CONTROLLER (9240SI) from the BMC2 connector
-install the BMC2 (1HA2) (Ref. AMM TASK 36-11-34-400-001)
-refer to Para. 4.C.
If the impedance is more than 3 KOhms:
-disconnect the connector between the sensing elements 58HF and 78HF
-connect the connector between the cables 60HF and 59HF
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本文链接地址：A320 Trouble Shooting Manual 排故手册 PNEUMATIC(135)
