Table 2–1. Master Failure Symptom Index (cont)

TM 1–1520–238–T–2 2–38 Table 2–1. Master Failure Symptom Index (cont) Failure Symptom MOC Reference COMM KY–28 CIRCUIT BREAKER (CB30) 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) COMM KY–28 CIRCUIT BREAKER DOES NOT STAY CLOSED TM 11–1520–238–23–2 TSEC/KY–28 COMMUNICATIONS SECURITY EQUIPMENT COMM KY–28 CIRCUIT BREAKER DOES NOT STAY CLOSED TM 11–1520–238–23–2 TSEC/KY–58 COMMUNICATIONS SECURITY EQUIPMENT COMM UHF AM CIRCUIT BREAKER (CB24) 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) COMM UHF AM CIRCUIT BREAKER DOES NOT STAY CLOSED TM 11–1520–238–23–2 UHF–AM RADIO SET COMM VHF FM CIRCUIT BREAKER (CB64) 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) COMM VHF FM CIRCUIT BREAKER DOES NOT STAY CLOSED TM 11–1520–238–23–2 VHF AM–FM RADIO SET CONSTANT TONE IN HEADSET DOES NOT CHANGE TO PERIODIC TONE INDICATING CIPHER MODE (PILOT VHF AM–FM RECEIVER/TRANSMITTER: MODE SWITCH SET TO TR) TM 11–1520–238–23–2 TSEC/KY–28 COMMUNICATIONS SECURITY EQUIPMENT COOLING FAN TO RADAR JAMMER RECEIVER/TRANSMITTER IS NOT HEARD (RDRCM CONTROL UNIT: OFF/STBY/OPR SWITCH SET TO OPR) TM 11–1520–238–23–2 RADAR JAMMER SYSTEM AN/ALQ–136