PANEL LIGHTS WILL NOT LIGHT. cont'd -680640266

TM 5-2420-224-20-1

Table 3-5. Troubleshooting (Cont)

Malfunction

Test or Inspection

Corrective Action

ELECTRICAL SYSTEM (CONT)

Step 5.

Disconnect master light switch connector (7) and check for continuity

between terminal A and terminal B of master light switch (8).

If there is continuity, repair wiring 49 between master light

switch and connector K.

If there is no continuity, replace master light switch

(page 4-137).

Step 6.

Check for +24 VDC between wire 494 (9) and ground at voltmeter

gage (10).

If +24 VDC is present, replace voltmeter gage (page 4-135).

If +24 VDC is not present, repair wiring 494 between indicator

(gage) and voltmeter gage.

VOLTM ETER

GAGE

3-136

Change 1