TM 5-1260-206-34
4-7. TROUBLESHOOTING PROCEDURES - Troubleshooting the OMS consists of isolat-
ing the malfunction and replacing the faulty part. Table 4-2 lists trouble-
shooting procedures for the OMS. If a malfunction is not listed or is not
corrected by the procedures given in this table, refer to the OMS functional
system interconnecting diagram (FO-7).
Table 4-2.
OMS Troubleshooting Procedures
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
10
MECHANICAL COMPONENTS BIND OR HAVE RESTRICTED OR IMPROPER MOVEMENT
Verify that malfunction exists.
Refer faulty OMS to depot maintenance personnel.
2.
OVERHEAD LAMPS NOT LIT
Step 1.
Check whether both lamps do not light.
If both, do step 2.
If one, do step 3.
Step 2.
Check that fuse F1 is good.
If good, do step 3.
If bad, replace fuse.
Check that lamp
Exchange unlit lamp with known good one.
Step 3.
lights.
If lamp lights , replace faulty lamp.
If lamp does not light, do step 4.
Step 4. Check for continuity between jack J3 and lamp assembly.
If bad, replace faulty wiring, connector, fuseholder,
Check that malfunction is corrected.
Step 5.
If not, refer faulty LAMP ASSEMBLY to depot maintenance
personnel.
4-2