TM 1–1520–238–T–3
Change 4
7–1
CHAPTER 7
INTEGRATED HELMET AND DISPLAY SIGHT SYSTEM (IHADSS)
MULTIPLEX READ CODES
FAILURE SYMPTOM INDEX
Symptom
Refer to paragraph
SEU NO–GO RH FAB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7–1
DEU NO–GO RH FAB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7–19
PILOT DAP OR HDU NO–GO, PILOT COMPARTMENT . . . . . . . . . . . . . . . . . .
7–22
PILOT RIGHT SSU NO–GO, PILOT COMPARTMENT . . . . . . . . . . . . . . . . . . . .
7–23
PILOT LEFT SSU NO–GO, PILOT COMPARTMENT . . . . . . . . . . . . . . . . . . . . .
7–24
PILOT HELMET ELECTRONICS NO–GO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7–25
CPG HDU GREY SCALE TEST PATTERN CANNOT BE ADJUSTED FOR
BRIGHTNESS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7–27, 7–49
NO SYMBOLS APPEAR ON CPG HDU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7–30, 7–55
NO SYMBOLS APPEAR ON PILOT HDU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7–29, 7–39
CPG HDU GREY SCALE TEST PATTERN CANNOT BE ADJUSTED FOR
CONTRAST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7–31, 7–50
PILOT HDU GREY SCALE TEST PATTERN CANNOT BE ADJUSTED FOR
CONTRAST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7–31
BORESITE REQUIRED REMAINS ON PILOT HDU . . . . . . . . . . . . . . . . . . . . . . 7–34
GUN DOES NOT FOLLOW PILOT HEAD MOVEMENTS . . . . . . . . . . . . . . . . . .
7–38
PILOT HDU RETICLE DOES NOT APPEAR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7–40
FOV BOX DOES NOT FOLLOW PILOT HEAD MOVEMENT . . . . . . . . . . . . . . . 7–41
PILOT VIDEO IS NOT DISPLAYED ON PILOT VDU . . . . . . . . . . . . . . . . . . . . . . 7–44
CPG VIDEO IS NOT DISPLAYED ON PILOT VDU . . . . . . . . . . . . . . . . . . . . . . . 7–44
CPG DAP OR HDU NO–GO, CPG COMPARTMENT . . . . . . . . . . . . . . . . . . . . .
7–45
CPG RIGHT SSU NO–GO, CPG COMPARTMENT . . . . . . . . . . . . . . . . . . . . . . . 7–46
CPG LEFT SSU NO–GO, CPG COMPARTMENT . . . . . . . . . . . . . . . . . . . . . . . . 7–47
CPG HELMET ELECTRONICS NO–GO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7–48
BORESITE REQUIRED REMAINS ON CPG HDU . . . . . . . . . . . . . . . . . . . . . . . . 7–51
TADS TURRET DOES NOT FOLLOW HEAD MOVEMENT . . . . . . . . . . . . . . . .
7–55
CPG CANNOT CONTROL WEAPONS SYSTEM WITH IHADSS . . . . . . . . . . .
7–56
FOV BOX DOES NOT FOLLOW CPG HEAD MOVEMENT . . . . . . . . . . . . . . . . 7–58
GREY SCALE TEST PATTERN REMAINS ON PILOT HDU (ACY) . . . . . . . . . .
7–61 (ACY), 7–63 (ACZ)
