TM 9-6115-647-14&P
Table 4-2. Troubleshooting.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1.
ICC/CRG DOES NOT RECEIVE POWER WHEN POWER UNIT GENERATOR SET IS TURNED ON.
Step 1.
Make sure ICC/CRG ON-OFF switch is in ON position.
Turn ON-OFF switch to ON.
Step 2.
Shut down generator set. Open PDU cover and generator set front curbside panel. Check P3
cable, power/control cable, control cable and P12, J11 wiring harness for good connections.
Tighten loose connections.
Step 3.
Switch power source to alternate power unit (para 2-1).
If ICC/CRG still does not receive power, go to malfunction 2.
WARNING
Generator set must be shut down before performing all remaining troubleshooting
procedures. Failure to observe this precaution can result in serious injury or death
by electrocution.
CAUTION
Do not exceed voltage required for test being performed. Excessively high voltage
may damage equipment.
Step 4.
Shut down generator set and open PDU cover. Connect power source jumper cable to
generator battery . If primary power unit is being tested, disconnect P3 from J3 and connect
jumper cable positive (+) lead to P3 pin B and negative (-) lead to P3 pin D. If standby unit is
being tested, disconnect P11 from J3 on standby unit and connect jumper cable positive lead
to
P11 pin B and negative lead to P11 pin D. Using multimeter, test for presence of 24 +3 VDC
between TB1-3 and TB1-5.
a.
If 24 +3 VDC is not present, go to step 5.
b.
If 24 +3 VDC is present, go to step 7
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