TM 1–1520–238–T–3
Change 5
27–1
CHAPTER 27
EMBEDDED GPS–INERTIAL (EGI) (ADD)
MULTIPLEX READ CODES
FAILURE SYMPTOM INDEX
Symptom
Refer to paragraph
EGI UNIT NO–GO RFAB TAILCONE MESSAGE DISPLAYED . . . . . . . . . . . . .
27–1
GPS NO–GO MESSAGE DISPLAYED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27–30
INS ATT? MESSAGE DISPLAYED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27–18
INS HDG? MESSAGE DISPLAYED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27–19
INS NO–GO MESSAGE DISPLAYED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27–23
INS VEL? MESSAGE DISPLAYED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27–17
Personnel Required:
(2)
References:
TM 9–1230–476–20–2
TM 11–1520–238–23–1
TM 11–1520–238–23–2
Equipment Conditions:
Ref
Condition
TM 11–1520–238–23–2
EGI – MAINTENANCE
OPERATIONAL CHECK in
progress
TM 9–1230–476–20–2
MULTIPLEX SUBSYSTEM
– POWER UP completed
NOTE
All multiplex read code responses are read from right to
left.
Multiplex read codes must be used in conjunction with
applicable Maintenance Operational Check (MOC) in
progress.
MULTIPLEX READ CODE INTERPRETATIONS
27–1 SIGNAL NAME:
MESSAGE ERROR
MEMORY LOCATION: 002641
MEMORY DATA BIT(S):
9
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Indicates message error.
REMARKS: From EGI to FCC.
PASS:
If fourth digit displayed on CDU is 0, go to paragraph 27–2.
FAIL: Location of fault: Replace EGI (TM 11–1520–238–23–1).
