TM 1–1520–238–T–2
Change 5
2–151
Table 2–1.
Master Failure Symptom Index (cont)
Failure Symptom
MOC
Reference
POWER ON INDICATOR (AMBER) DOES NOT
LIGHT (CIPHONY PANEL: POWER SWITCH
SET TO ON)
TM 11–1520–238–23–2
TSEC/KY–28
COMMUNICATIONS
SECURITY
EQUIPMENT
POWER UP DISPLAY, NAV TOP LEVEL POWER
OFF PAGE IS NOT DISPLAYED (AN/ASN–137)
(ADC)
TM 11–1520–238–23–2
DOPPLER
NAVIGATION
SYSTEM (DNS)
AN/ASN–137 (ADC)
POWER XFMR RECT 1 CIRCUIT BREAKER
(CB1) DOES NOT STAY CLOSED (PILOT
ELEC PWR PANEL: BATT/EXT PWR SWITCH
SET TO BATT)
TM 1–1520–238–T–6
DC ELECTRICAL
POWER
GENERATION
POWER XFMR RECT 2 CIRCUIT BREAKER
(CB4) DOES NOT STAY CLOSED (PILOT
ELEC PWR PANEL: BATT/EXT PWR SWITCH
SET TO BATT)
TM 1–1520–238–T–6
DC ELECTRICAL
POWER
GENERATION
PPOS DATA DOES NOT CHANGE TO LINE 1
PPOS 12S WN 0000 0000, LINE 2 VAR E010.0
SPH CL6 (CDU: PPOS, VAR AND SPH DATA
ENTERED)
TM 11–1520–238–23–2
DOPPLER
NAVIGATION
SYSTEM (DNS)
AN/ASN–137
PPOS DOES NOT CHANGE TO UPDT (CDU
DOPPLER NAV: VAB NEXT TO DISPLAYED
WORD PPOS PRESSED)
TM 11–1520–238–23–2
DOPPLER
NAVIGATION
SYSTEM (DNS)
AN/ASN–137
PPOS EASTING DATA (RIGHT MOST 4 DIGITS
OF DISPLAY LINE 1) DO NOT START
INCREASING (CDU: NUMBER 150 ENTERED
ON SCRATCH PAD AND VAB NEXT TO
DISPLAYED WORD KPH PRESSED)
TM 11–1520–238–23–2
DOPPLER
NAVIGATION
SYSTEM (DNS)
AN/ASN–137
PRESS TO TEST INDICATOR IS NOT LIGHTED
(CPG INTR LT PANEL: INST CONTROL
ROTATED TO BRT)
TM 1–1520–238–T–6
CPG CAUTION AND
WARNING SYSTEM
PRESS TO TEST INDICATOR IS NOT LIGHTED
(PILOT EXT LT/INTR LT PANEL: INST
CONTROL ROTATED TO BRT) (CPG MASTER
CAUTION/WARNING PANEL: PRESS TO TEST
INDICATOR PRESSED)
TM 1–1520–238–T–6
PILOT CAUTION AND
WARNING SYSTEM
