Do not work on energized equipment alone. The equipment contains 120 Vac. Be
careful not to contact connections for 120 Vac when testing equipment. Always
work with another person nearby who is familiar with hazards of electronic
equipment and is competent in administering first aid. Failure to obey this warning
could result in death or injury.
Refer to figure 4-4 in Tables 4-6 through 4-10. Using multimeter, check each wire for continuity.
Check each switch as follows:
Position switch in mid position and tag and remove electrical leads.
Using multimeter, measure resistance across switch at OPEN and COMMON terminals. Reading on meter
should be open circuit.
While holding switch in depressed position, measure resistance across switch at OPEN and COMMON
terminals. Reading on meter should be short circuit.
Pull switch out to maintenance position (all the way out).
Measure resistance across switch. Reading on meter should be short circuit.
If any reading in step b is not correct, replace switch as follows:
Depress tabs on switch and pull outward.
Insert new switch and push inward until switch seats.
Connect wires to OPEN and COMMON terminals.
Adjust switch as necessary to ensure switch engages when CMA is closed.
Close all drawer assemblies and rear door. Install two lower panels.
4.6 AMG MAINTENANCE.
4.6.1 Uninterruptible Power Supply (UPS) Maintenance.
This task covers: a. Removal
Electronic System Maintenance Tool Kit
UPS (Appendix C, figure 2)
(Appendix B, Section III, item 1)
Battery (Appendix C, figure 2, item 8)
General Safety Instructions
Equipment shutdown (TM 5-6350-280-10)
Do not work on equipment without
following standard shop safety