TM 1–1520–238–T–2
Change 6
2–15
Table 2–1.
Master Failure Symptom Index (cont)
Failure Symptom
MOC
Reference
APU HOLD CIRCUIT BREAKER (CB10) 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 (DC
EMERGENCY BUS –
PILOT STATION)
APU ON INDICATOR IS NOT LIGHTED
TM 1–1520–238–T–6
AC ELECTRICAL
POWER
GENERATION
APU ON INDICATOR IS NOT LIGHTED 60
SECONDS AFTER APU START
TM 1–1520–238–T–8
AUXILIARY POWER
UNIT
APU RUNS AND APU NO–GO OVERSPEED
APPEARS ON HOD
TM 1–1520–238–T–8
AUXILIARY POWER
UNIT
APU RUNS, PTO CLUTCH DOES NOT ENGAGE
AND APU GO APPEARS ON HOD
TM 1–1520–238–T–8
AUXILIARY POWER
UNIT
APU RUNS, PTO CLUTCH DOES NOT ENGAGE
AND APU NO–GO UNDERSPEED APPEARS
ON HOD
TM 1–1520–238–T–8
AUXILIARY POWER
UNIT
APU START SEQUENCE DOES NOT BEGIN
(PILOT APU FIRE TEST PANEL: 95%/ NORM
SWITCH SET TO 95%)
TM 1–1520–238–T–8
AUXILIARY POWER
UNIT
ARC–201A DOES NOT HOLD PRESET
CHANNEL OR HOLD FILL WHEN POWER
REMOVED (ADI)
TM 11–1520–238–23–2
VHF AM–FM
AN/ARC–186 AND
AN/ARC–201A RADIO
SETS (ADI)
ARC–201A PANEL LIGHTING – NOT ON (ADI)
TM 11–1520–238–23–2
VHF AM–FM
AN/ARC–186 AND
AN/ARC–201A RADIO
SETS (ADI)
ARC–201A RADIO TRANSMIT POWER (PILOT) –
IS LOW (ADI)
TM 11–1520–238–23–2
VHF AM–FM
AN/ARC–186 AND
AN/ARC–201A RADIO
SETS (ADI)
ARC–201A RECEIVE AUDIO (PILOT) – IS NOT
PRESENT IN EITHER HEADSET (ADI)
TM 11–1520–238–23–2
VHF AM–FM
AN/ARC–186 AND
AN/ARC–201A RADIO
SETS (ADI)
