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

TM 1–1520–238–T–2 Change 5 2–57 Table 2–1. Master Failure Symptom Index (cont) Failure Symptom Reference MOC DPLR NAV PANEL EDGE–LIGHTS DO NOT LIGHT (CPG INTR LT PANEL: R CSL CONTROL ROTATED TO BRT) TM 11–1520–238–23–2 DOPPLER NAVIGATION SYSTEM (DNS) AN/ASN–128 DTC BATTERY LOW TM 1–1520–238–T–3 DATA TRANSFER UNIT (DTU) (ADD) DTC DOES NOT ZEROIZE TM 1–1520–238–T–3 DATA TRANSFER UNIT (DTU) (ADD) DTC READY DOES NOT APPEAR TM 1–1520–238–T–3 DATA TRANSFER UNIT (DTU) (ADD) DTU CIRCUIT BREAKER DOES NOT STAY CLOSED (ADD) TM 11–1520–238–23–2 DATA TRANSFER UNIT (DTU) (ADD) DTU, EGI, AND SDCC FAIL TO ZEROIZE (ADD) TM 11–1520–238–23–2 EMBEDDED GPS–INERTIAL (ADD) DTU, EGI, AND SDCC UNCOMMANDED ZEROIZE (ADD) TM 11–1520–238–23–2 EMBEDDED GPS–INERTIAL (ADD) DTU INOP MESSAGE DISPLAYED (ADD) TM 11–1520–238–23–2 DATA TRANSFER UNIT (DTU) (ADD) DTU LT BUS NO–GO CPG COMPARTMENT (ADD) TM 9–1230–476–20–2 MULTIPLEX SUBSYSTEM (ADD) DTU RT BUS NO–GO CPG COMPARTMENT (ADD) TM 9–1230–476–20–2 MULTIPLEX SUBSYSTEM (ADD) DTU (ONLY) FAILS TO ZEROIZE (ADD) TM 11–1520–238–23–2 DATA TRANSFER UNIT (DTU) (ADD) DTU (ONLY) UNCOMMANDED ZEROIZE (ADD) TM 11–1520–238–23–2 DATA TRANSFER UNIT (DTU) (ADD) DUAL HYDRAULIC PRESSURE INDICATOR EDGE–LIGHT IS NOT LIGHTED (PILOT EXT LT/INTR LT PANEL: INST CONTROL ROTATED TO BRT) TM 1–1520–238–T–5 PRIMARY HYDRAULIC SYSTEM