TM 9-4310-397-14
4-37. LAMP SWITCH AND LAMP TESTING AND REPLACEMENT .
This task covers:
a.
Testing
b.
Removal
c.
Installation
INITIAL SETUP
Tools:
Equipment Conditions:
General Mechanics Tool Kit
Control Panel door open.
Item 1, Section III, Appendix B
Battery cables disconnected from batteries. (See para
Shop Equipment Electrical
4-49.)
Item 3, Section III, Appendix B
a.
Testing.
NOTE
Testing is limited to checking for continuity.
(1)
See step b, (2) below and remove lamp. Check continuity across LAMP. Continuity should be indicated.
Replace the LAMP if it tests defective.
(2)
Using a multimeter set to measure resistance, check continuity across LAMP SWITCH. With the switch in
the ON position, continuity should be indicated. With the switch in the OFF position, no continuity should
be indicated. Replace the switch if it tests defective.
(3)
Disconnect terminal lug connections (Figure 4-33, 2) and tag (item 18, section II, appendix E) for testing.
b.
Removal.
NOTE
Terminal and mounting hardware are supplied with most components and cannot be purchased
separately. Retain all hardware if original component is not being replaced. If component is being
replaced, use new hardware supplied.
(1)
Lamp Switch.
(a)
Tag (item 18, section II, appendix E) wire leads.
(b)
Remove two pan head screws (1) that secure the terminal lugs (2) on the LAMP SWITCH (3).
4-100
