RADAR TEST SET
The malfunction/symptom index (Table 10-1) is a quick reference index for finding troubleshooting
The troubleshooting work packages list the symptoms, malfunctions, and corrective actions required to return
the Test Set to normal operation. Perform the steps in the order they appear. Before performing any
troubleshooting, perform a detailed visual inspection to check for obvious physical damage or abuse that
could contribute to the problem.
If a malfunction is not listed or is not corrected by listed corrective actions, notify the next higher level
Test Set is "dead", blank display, no internal lights
Display check fails
Test Set does not operate.
Test Set goes dark and appears "dead".
Push button switches are intermittent or do not
Test Set does not work in radiated mode but works
okay in direct connect.
Test Set does not work in direct connect mode but
works okay in radiated mode.
Consistent "Fault=No Replies" messages or low
Consistent power, frequency, or reply delay errors.
Consistent "Fault=Angle" messages.
Small yellow and/or red lights visible inside Test
Set not on the display. Sometimes, yellow light
Blinking yellow light not visible when battery is
being charged from external power.
Cannot load Mode 4 Codes.
Cannot detect KIT/KIV for interrogator testing.
Cannot load Mode 4 Codes for transponder
Test Set does not charge internal battery.
Test Set does not work on battery power but works
okay on external power.