TM 1–1520–238–T–2
Change 5
2–17
Table 2–1.
Master Failure Symptom Index (cont)
Failure Symptom
Reference
MOC
ATTD IND CIRCUIT BREAKER (CB20) DOES
NOT STAY CLOSED (PILOT ELEC PWR
PANEL: BATT EXT/PWR SWITCH SET TO EXT
PWR)
TM 1–1520–238–T–6
CIRCUIT
PROTECTION
SYSTEM (AC
ESSENTIAL BUS 1 –
CPG STATION)
ATTD IND CIRCUIT BREAKER DOES NOT STAY
CLOSED
TM 11–1520–238–23–2
NAVIGATION
INSTRUMENTS
ATT–HDG INPUT SIGNALS NO–GO
SDCC–HARS WIRING MESSAGE DISPLAYED
(AN/ASN–137) (ADD)
TM 11–1520–238–23–2
TM 1–1520–238–T–3
DOPPLER
NAVIGATION
SYSTEM (DNS)
AN/ASN–137 (ADD)
AUDIO CANNOT BE HEARD IN BOTH
HEADSETS (CPG AND PILOT CSC PANELS:
NAV B CONTROL ACTIONED AND
ADJUSTED)
TM 11–1520–238–23–2
VIDEO RECORDER
AUDIO CANNOT BE PLAYED BACK (CPG AND
PILOT CSC PANELS: NAV B CONTROL
ACTIONED AND ADJUSTED)
TM 11–1520–238–23–2
VIDEO RECORDER
AUDIO IS HEARD BUT TUNE METER SHOWS
NO INDICATION (ADF RCVR CONTROL
PANEL: CW/VOICE/TEST SWITCH SET TO
VOICE AND MODE SWITCH SET TO COMP)
TM 11–1520–238–23–2
AUTOMATIC
DIRECTION FINDER
(ADF) AN/ARN–89
AUDIO IS NOT HEARD AND NO TUNE METER
INDICATION IS PRESENT (ADF RCVR
CONTROL PANEL: CW/VOICE/TEST SWITCH
SET TO VOICE AND MODE SWITCH SET TO
COMP)
TM 11–1520–238–23–2
AUTOMATIC
DIRECTION FINDER
(ADF) AN/ARN–89
AUDIO IS NOT HEARD IN PILOT OR CPG
HEADSET AND TUNE METER INDICATION IS
PRESENT (ADF RCVR CONTROL PANEL:
MODE SWITCH SET TO ANT AND
CW/VOICE/TEST SWITCH SET TO VOICE)
TM 11–1520–238–23–2
AUTOMATIC
DIRECTION FINDER
(ADF) AN/ARN–89
AUDIO IS NOT PRESENT AND SAFE LIGHT ON
PILOT ARM/SAFE INDICATOR IS LIGHTED
(PILOT FIRE CONTROL PANEL: MASTER
SWITCH SET TO SAFE)
TM 1–1520–238–T–6
SQUAT SWITCH
SYSTEM
AUDIO IS NOT PRESENT AND SAFE LIGHT ON
PILOT ARM/SAFE INDICATOR IS NOT
LIGHTED (SQUAT SWITCH FIXTURE
INSTALLED)
TM 1–1520–238–T–6
SQUAT SWITCH
SYSTEM
