TM 5-2350-378-23&P
0021
APPARENT HYDRAULIC DIAGNOSTIC CENTER (HDC) SYSTEM PROBLEM - Continued
STEP
31.
Check if CIRCUIT FAULT message is displayed on either screen.
a.
Check all umbilical cable W4 electrical connectors on HDC control box and umbilical cable disconnect
bracket for proper connections and tightness (Figures 22 and 23).
HDC
CONTROL BOX
CONTROL BOX
CONNECTOR J3
CONTROL BOX
CONNECTOR J1
CONTROL BOX
CONNECTOR J2
UMBILICAL CABLE
CONNECTOR W4P1
UMBILICAL CABLE
CONNECTOR W4P2
UMBILICAL CABLE
CONNECTOR W4P3
T01922HDC
Figure 22.
Umbilical Cable Assembly W4 Connections to Hydraulic Diagnostic Center (HDC) Control Box.
W3J1
W2J1
W4P6
W1J1
UMBILICAL CABLE
DISCONNECT
PANEL
W4P4
UMBILICAL CABLE
ASSEMBLY W4
W4P5
T01923HDC
Figure 23. Umbilical Cable Assembly W4 Connection to Umbilical Cable Disconnect Bracket.
b.
Tighten as necessary.
c.
Power off HDC system, wait a few moments, then power up HDC system again.
CONDITION/INDICATION
Is a CIRCUIT FAULT message displayed on either HDC control box LCD screen (upper or lower)?
03/15/2011Rel(1.8)root(tswp)wpno(T00019)