TM 55-4920-431-13
AVUM MAINTENANCE INSTRUCTIONS
REQUIREMENTS
Section I.
Maintenance procedure in this chapter will be performed by:
Personnel.
68F Aircraft Electrician.
Parts. Replaceable parts are listed and illustrated in Chapter 5. When requisitioning parts,
refer to TM 55-4920-431-23P.
TROUBLESHOOTING
Section II.
3-3. Introduction. The following troubleshooting procedures are to
find faults in
the
tester itself, and not in the APU or ESU being tested. The troubles covered are those
that may be encountered with the tester connected for use as shown in figure 2-2 or
2-3. Refer to figure 3-1 for identification of connector contacts.