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TM 3-1040-279-12&P
NOTES
Troubleshooting procedures given in this table are the same for both smoke generators and
either side of the control panel assembly.
Some of the troubleshooting procedures require two people. Before performing these proce-
dures, make sure the second person is available.
System uses vehicle battery for power. Do not operate system without vehicle engine
running. See vehicle operator manual.
On M1059 vehicles, the control panel has to be removed from mounting bracket and
lowered to access electrical connector sockets for measurements.
28v will range from 24 to 28 volts.
TROUBLESHOOTING
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1. POWER INDICATOR DOES NOT LIGHT.
Step 1. Check POWER indicator lamp.
Set circuit breaker CB1 and POWER switch to ON.
Press lens of POWER indicator.
If lamp does not light, replace lamp (P. 4-110).
If lamp still does not light, go to next step.
Step 2. Check for 28v at power supply cable assembly.
Disconnect power supply cable from control panel connector 1J1.
Check for 28v input at disconnected end of power supply cable with voltmeter referenced
to ground.
If 28v input is present, connect power supply cable to control panel connector 1J1 and
go to next step.
If 28v input is not present, connect power supply cable to control panel connector lJ1
and notify your supervisor.
Step 3. Check for 28v output from circuit breaker CB1.
Disconnect cable assembly from control panel connector 1J2.
Set circuit breaker CB1 to ON.
Check for 28v between sockets B (+) and C (-) of 1J2.
If 28v is obtained, go to next step.
If 28v is not obtained, replace CB1 (P. 4-110).

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