TM 11-6625-1831-13
5-3b.
Troubleshooting Test Panel (Cont)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
17. BITE GO indicator fails to remain on.
Check Oscillator and Switch Module 1A2 by replacing it.
Replace if defective (para 5-6).
18. Indicators fail to turn off.
Check Oscillator and Switch Module 1A2 by replacing it.
Replace if defective (para 5-6).
19. Open circuit through RANGE DELAY switch.
Step 1.
Check wiring. Test for open circuit from +20V line at XA3-E to RANGE DELAY switch S2-13
Also test for open circuit from the switch position that failed to SIGNAL J2 jack (see
schematic for pin numbers)
A. If open circuit is found, repair as necessary (para 5-14).
B. If no open circuit is found, go to step 2.
Step 2.
Replace RANGE DELAY switch S2.
Install new switch (para 5-6).
20. Open circuit through RANGE switch.
Step 1.
Check wiring. Test for open circuit from +20V line at XA3-E to RANGE switch S3-8. Test for
open circuit from the switch position that failed to SIGNAL J2 jack (see schematic for pin
numbers).
A. If open circuit is found, repair as necessary (para 5-14).
B. If no open circuit is found, go to step 2.
Step 2.
Replace RANGE switch S3.
Install new switch (para 5-6).
21. Open circuit through ANTENNA switch.
Step 1
Check wiring. Test for open circuit from XA3-E to ANTENNA switch S4. Also test for open
circuit from the switch position that failed to SIGNAL J2 jack (see schematic for pin
numbers).
A. If open circuit is found, repair as necessary (para 5-14).
B. If no open circuit is found, go to step 2.
Step 2.
Replace ANTENNA switch S4.
Install new switch (para 5-6).
22. Open circuit through PRF switch.
Step 1.
Check switch for proper circuit. Test continuity from PRF switch terminals S5-1 to S5-2. Should
be zero ohms.
Replace switch if defective (para 5-6).
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