- do a check of the status of the auxiliary contact of the INT LT/ANN LT switch (33LP) between pin 3D and pin 1D (normally open) (Ref. ASM 33-14/02).
「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 288
May 01/05 CES
(1) If the contact is closed:
- replace the SW-INT LT/ANN LT (33LP).
(2) If the contact is open:
- do a check of the wiring (Ref. ASM 33-14/02) for a short to ground between: . pin 3D of the INT LT/ANN LT switch (33LP) and pin H of the battery voltmeter 1 (3PV1) . pin 3D of the INT LT/ANN LT switch and pin H of the battery voltmeter 2 (3PV2) . pin 3D of the INT LT/ANN LT switch and pin A/J of the clock (2FS) . pin 3D of the INT LT/ANN LT switch and pin A/d of the VOR/DME RMI (11FN).
(a) If the wiring is not correct:
- repair or replace it.
(b) If the wiring is correct:
- replace the VOLTMETER-BAT 1 (3PV1) (Ref. AMM TASK 24-37-21-000-001) and (Ref. AMM TASK 24-37-21-400-001).
1 If the fault continues:
_
- replace the VOLTMETER-BAT 2 (3PV2) (Ref. AMM TASK 24-37-21-000-001) and (Ref. AMM TASK 24-37-21-400-001).
a If the fault continues:
_
- replace the CLOCK (2FS) (Ref. AMM TASK 31-21-21-000-001) and (Ref. AMM TASK 31-21-21-400-001). . If the fault continues:
- replace the RMI-VOR/DME (11FN) (Ref. AMM TASK 34-57-22-000-001) and (Ref. AMM TASK 34-57-22-400-001).
R **ON A/C 106-149, 201-299, 301-399, 401-499,
A. If the test confirms the fault:
- make sure that the INT LT/ANN LT switch (33LP) is in the BRT or DIM position
- do a check of the status of the auxiliary contact of the INT LT/ANN LT switch (33LP) between pin 3D and pin 1D (normally open) (Ref. ASM 33-14/02).
(1) If the contact is closed:
- replace the SW-INT LT/ANN LT (33LP).
(2) If the contact is open:
- do a check of the wiring (Ref. ASM 33-14/02) for a short to ground between: . pin 3D of the INT LT/ANN LT switch (33LP) and pin H of the battery voltmeter 1 (3PV1) . pin 3D of the INT LT/ANN LT switch and pin H of the battery voltmeter 2 (3PV2)
「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 289
Aug 01/05 CES . pin 3D of the INT LT/ANN LT switch and pin A/J of the clock (2FS) . pin 3D of the INT LT/ANN LT switch and pin A/d of the VOR/ADF/DME RMI (21FN).
(a) If the wiring is not correct:
- repair or replace it.
(b) If the wiring is correct:
- replace the VOLTMETER-BAT 1 (3PV1) (Ref. AMM TASK 24-37-21-000-001) and (Ref. AMM TASK 24-37-21-400-001).
1_ If the fault continues:
- replace the VOLTMETER-BAT 2 (3PV2) (Ref. AMM TASK 24-37-21-
000-001) and (Ref. AMM TASK 24-37-21-400-001).
a If the fault continues:
_
- replace the CLOCK (2FS) (Ref. AMM TASK 31-21-21-000-001) and (Ref. AMM TASK 31-21-21-400-001). . If the fault continues:
- replace the RMI-VOR/ADF/DME (21FN) (Ref. AMM TASK 34-57-22-000-002) and (Ref. AMM TASK 34-57-22-400-002).
**ON A/C ALL
B. Do the test given in para. 3.
「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 290
May 01/04R
CES
EXTERNAL POWER - FAULT ISOLATION PROCEDURES
___________________________________________
R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 301-399,
TASK 24-40-00-810-801
Failure of the External Power Phase Sequence
1. Possible Causes
_______________
- GPCU (1XG)
- feeder wires
- wiring
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
R AMM 24-41-00-740-002 Operational Test of the Ground power Control Unit (GPCU) AMM 24-41-00-861-002 Energize the Aircraft Electrical Circuits from the External Power AMM 24-41-00-861-002 Energize the Aircraft Electrical Circuits from the APU AMM 24-41-00-862-002 De-energize the Aircraft Electrical Circuits Supplied from the External Power AMM 24-41-00-862-002 De-energize the Aircraft Electrical Circuits Supplied
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