TM 11-5820-890-30-4
6-13. OPERATIONAL CHECK.
The operational check provides a step-by-step procedure for evaluating a control-monitor. If the operational
check is passed, the control-monitor can be returned to service. If it does not pass the test, the bad module or
the troubleshooting chart to be used will be identified. The troubleshooting procedures are in paragraph 6-14.
The operational check is divided into steps. Each step verifies a particular function. Follow the instruction in the
“Action” column. Check the response. If the response is correct, proceed with the next lettered step. When a
Step has been completed, proceed with the next Step. A” No response” in the ‘Response” column means that
any response is not of interest.
The switch settings for the test equipment are given in the “EQUIPMENT PRESETS” section of each test setup
figure.
WARNING
Connect the test setups only when directed, and with the power supply set to OFF. The large
current capacity of the test power supply can cause personal injury. Verify the test setup before
turning the power supply ON.
CAUTION
Static electricity and stray voltages can damage the control-monitor. Use an antistatic pad on
the work surface and wear a grounded wrist strap when troubleshooting.
NOTE
CB1 should be turned OFF whenever the control-monitor is being connected to the test radio. If
the control-monitor does not turn-on properly when power is applied, try turning CB1 OFF and
back ON a few times until it does.
6-11
