TM 11-6625-1831-13
5-3b.
Troubleshooting Test Panel (Cont)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
36. Time from SWP GATE IN to TRIG OUT signals is not 60 0.5 s.
Step 1.
Check X SELECT switch S1, Y SELECT switch S15, TARGET WIDTH switch S13, RANGE
switch S3, and MT GEN switch S12. Remove Clock and Counter Module 1A1. Test for open
circuit from XA1 through each switch (see schematic for pin numbers).
Repair wiring or replace switch as necessary (para 5-14, 5-6).
Step 2.
Check Clock and Counter Module 1Al by replacing it.
Install new module (para 5-6).
Step 3.
Check Oscillator and Switch Module 1A2 by replacing it.
Install new module (para 5-6).
37. Time from SWP GATE IN to TRIG OUT signals is not 56 0.5 s.
Check TARGET WIDTH switch S13. Remove Clock and Counter Module 1Al. Test for open circuit
through S13 from XA1-14 to XA3-W.
Repair wiring or replace switch as necessary (para 5-14, 5-6).
38. TRIG OUT signal is not 28 0.5 s.
Check Oscillator and Switch Module 1A2 by replacing it.
Install new module (para 5-6).
39. TRIG OUT signal is not 2 0.3 s.
Check Oscillator and Switch Module 1A2 by replacing it.
Install new module (para 5-6).
40. TRIG OUT signal is not 4 0.3 s.
Check RANGE switch S3. Remove Clock and Counter Module 1A1. Test for open circuit through S3
from XA1-Y to XA3-W. Reading should be zero ohms.
Repair wiring or replace switch as necessary (para 5-14, 5-6).
5-35
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