TM 11-6625-1831-13
5-3b.
Troubleshooting Test Panel (Cont)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Step 2.
Check wiring. Test for open circuit from +20 volt line XA3-E to S5-2 Test for open circuit from
S5-1 to SIGNAL J2 jack J2-H.
Repair wiring (para 5-14).
23. Voltage present with PRF switch in RANDOM position.
Replace PRF switch S5.
Install new switch (para 5-6).
24. Open circuit through CORNER switch.
Step 1.
Check switch S6 for open circuit. Test continuity from CORNER switch terminals S6-1 to
S6-2.
Replace switch if defective (para 5-6).
Step 2.
Check wiring. Test for open circuit from +20 volt line XA3-E to S6-2 Test for proper circuit from
S6-1 to SIGNAL J2 jack J2-L.
Repair wiring (para 5-14).
25. Voltage present with CORNER switch in LOW position.
Replace CORNER switch S6.
Install new switch (para 5-6).
26. Voltage present with DATA MARK switch OFF.
Replace DATA MARK switch S7.
Install new switch (para 5-6).
27. Open circuit through DATA MARK switch.
Step 1.
Check switch S7 for open circuit. Push and hold switch S7 Test continuity from S7-1 to S7-3
Replace switch if defective (para 5-6).
Step 2.
Check wiring. Test for open circuit from +20volt lineXA3-EtoS7-1. Test for open circuit from
S7-3 to SIGNAL J2 jack J2V.
Repair wiring (para 5-14).
28. Voltage present with BITE TEST switch OFF.
Replace BITE TEST switch S8.
Install new switch (para 5-6).
5-33
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