Table 3-1. Direct Support Troubleshooting- continued
TEST OR INSPECTION
CONTROL BOX ASSEMBLY
INDICATOR LAMP INOPERABLE.
Step 1. Perform lamp test.
If four or more lamps fail, go to Malfunction 2, Control Box Assembly.
Step 2. Perform a point-to-point continuity test of appropriate circuit between relay contacts of K1 through K9
injunction box and light assemblies DS1 thru DS9.
If open is measured between relay contacts, replace relay K10 or K11 as required. Refer to
If open is measured in wiring, tighten connections and/or replace defective wire.
If open, repair cable assembly, W52. Refer to Paragraph 3-27.
If continuity exists through entire circuit, replace defective light assembly. Refer to Paragraph 3-49.