TM 1–1520–238–T–3
15–42
Change 4
15–180 SIGNAL NAME:
THUMB ELEVATION RATE TO TEU (ACY) ORT MAN EL CMD (ACZ)
MEMORY LOCATION: 001240
MEMORY DATA BIT(S):
4–19 (ACY) 4–15 (ACZ)
(SCALAR)
CONDITION:
Monitor HOD while increasing azimuth; memory location response should increase
when azimuth increases and decrease when azimuth decreases.
SIGNAL FUNCTION:
Contains elevation slew rate information.
REMARKS: From FCC through LH FAB MRTU Type I to TEU.
PASS:
If CONDITION corresponds to selected elevation, go to paragraph 15–181.
FAIL: Location of fault: LH FAB MRTU Type I, wiring from LH FAB MRTU Type I to TEU, TEU.
Troubleshoot wiring to isolate fault (TM 1–1270–476–T).
15–181 SIGNAL NAME:
ORT ADJ A
MEMORY LOCATION: 000427
MEMORY DATA BIT(S):
4–19 (ACY) 4–15 (ACZ)
(SCALAR)
CONDITION:
Monitor HOD while increasing elevation; memory location response should increase
when elevation increases and decrease when elevation decreases.
SIGNAL FUNCTION:
Indicates elevation (EL) setting for out–front boresighting.
REMARKS: From ORT through CPG MRTU Type III to FCC.
PASS:
If CONDITION corresponds to selected elevation, go to paragraph 15–182.
FAIL: Location of fault: ORT, wiring from ORT to CPG MRTU Type III, CPG MRTU Type III.
Troubleshoot wiring to isolate fault (TM 1–1270–476–T).
15–182 SIGNAL NAME:
ADJ A TO TEU (ACY) A ADJ CMD (ACZ)
MEMORY LOCATION: 001243
MEMORY DATA BIT(S):
4–19 (ACY) 4–15 (ACZ)
(SCALAR)
CONDITION:
Monitor HOD while increasing elevation; memory location response should increase
when elevation increases and decrease when elevation decreases.
SIGNAL FUNCTION:
Indicates elevation setting for out–front boresighting.
REMARKS: From FCC through LH FAB MRTU Type I to TEU.
PASS:
If the CONDITION corresponds to selected elevation, go to paragraph 15–183.
FAIL: Location of fault: LH FAB MRTU Type I, wiring from LH FAB MRTU Type I to TEU, TEU.
Troubleshoot wiring to isolate fault (TM 1–1270–476–T).
15–183 SIGNAL NAME:
ORT THUMB AZIMUTH RATE (ACY) ORT MAN AZ RATE (ACZ)
MEMORY LOCATION: 000423
MEMORY DATA BIT(S):
4–19 (ACY) 4–15 (ACZ)
(SCALAR)
CONDITION:
Monitor HOD while increasing azimuth; memory location response should increase
when azimuth increases and decrease when azimuth decreases.
SIGNAL FUNCTION:
Contains azimuth slew rate information.
REMARKS: From ORT through CPG MRTU Type III to FCC.
PASS:
If CONDITION corresponds to correct azimuth data, go to paragraph 15–184.
FAIL: Location of fault: ORT, wiring from ORT to CPG MRTU Type III, CPG MRTU Type III.
Troubleshoot wiring to isolate fault (TM 1–1270–476–T).
