TM-5-2350-378-23-P
ARMORED COMBAT EARTHMOVER (ACE), M9; HYDRAULIC DIAGNOSTIC CENTER
TECHNICAL MANUAL; FIELD MAINTENANCE MANUAL INCLUDING REPAIR PARTS AND SPECIAL TOOLS LIST
JUNE 2012
TM-5-2350-378-23-P - Page 334 of 644
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).
CONTROL BOX
CONNECTOR J3
UMBILICAL CABLE
CONNECTOR W4P1
UMBILICAL CABLE
CONNECTOR W4P2
HDC
CONTROL BOX
T01922HDC
CONTROL BOX
CONNECTOR J1
UMBILICAL CABLE
CONNECTOR W4P3
CONTROL BOX
CONNECTOR J2
Figure 22.
Umbilical Cable Assembly W4 Connections to Hydraulic Diagnostic Center (HDC) Control Box.
W2J1
UMBILICAL CABLE
ASSEMBLY W4
W4P6
W3J1
T01923HDC
W1J1
UMBILICAL CABLE
DISCONNECT
PANEL
W4P4
W4P5
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)?
TM 5-2350-378-23&P
0021
0021-22
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