TM-5-2350-378-24-P
HYDRAULIC DIAGNOSTIC CENTER (HDC) SUPPORTING ARMORED COMBAT EARTHMOVER (ACE), M9
TECHNICAL MANUAL; UNIT, DIRECT SUPPORT, AND GENERAL SUPPORT MAINTENANCE MANUAL INCLUDING REPAIR PARTS AND SPECIAL TOOLS LIST
TM-5-2350-378-24-P - Page 505 of 790
TM 5--2350--378--24&P
0022 00--22
APPARENT HDC SYSTEM PROBLEM -- Continued
0022 00
YES
YES
from block 7
41
Do all of the HDC control box push button
switches operate properly?
Proceed to functionally check out the HDC
system and individual HDC system
components in accordance with the procedure
and sequence listed in the HDC system
functional check--out (refer to WP 0005 00).
YES
NO
NO
NO
NO
38
Do HDC control box LCD screens (pressure
transducer, upper LCD screen (Figure 22, item 1) and
solenoid valves status, lower LCD screen (Figure 22,
item 2)) display proper start up (initial conditions)
de--energized state information for HDC system
solenoid valves (refer to WP 0005 00, Table 1)?
42
Replace HDC control box.
39
Do LCD screens display proper start up (initial
conditions) information?
Power off HDC system. Wait a few moments,
then power up HDC system again.
To block 48
YES
NO
To block 51
40
Continue with HDC system functional
check--out.
HDC control box now appears to have passed
start--up BIT.
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