TM 9-6150-228-13&P
SECTION IV. UNIT TROUBLESHOOTING
4.9
INTRODUCTION.
4.9.1
This section contains troubleshooting information and tests for isolating faults which may develop in the power
distribution panel. When the cause of a problem has been identified using test procedures authorized at the unit level, it
is reported to the next higher level of maintenance. Most components of the power distribution panel are authorized for
repair at the direct support level of maintenance. See Maintenance Allocation Chart (MAC) in Appendix B.
4.9.2
Keep in mind that this manual addresses only the power distribution panel. Refer to appropriate technical
manuals to identify problems caused by the power generation equipment. Refer to TM 9-61 50-226-13 for
troubleshooting procedures applicable to DISE/PDISE equipment.
4.10 SYMPTOM INDEX.
Troubleshooting
Procedure
Symptom
(Para)
Circuit breaker supporting user's load repeatedly trips ........................................................
4.11.3
Equipment powered through the power distribution panel will not operate (output from
power generation equipment has been verified at source) ..................................................
4.11.2
User's equipment powered by one or all output connectors does not operate......................
4.11.1
4.11 UNIT TROUBLESHOOTING.
4.11.1
General.
4.11.1.1
The common malfunctions which one may encounter during operation or maintenance of the power
distribution panel are listed in Table 4-3. Perform the tests, inspections, and corrective actions in the order listed.
4.11.1.2
This manual cannot list all the malfunctions that may occur, nor all tests or inspections and corrective actions
possible. If a malfunction is not listed, or is not corrected by listed corrective actions in this manual, then notify
supervisor.
4.11.2
Troubleshooting Instructions. Unit troubleshooting lists the common malfunctions which can occur during the
operation of the power distribution panel. Each malfunction for an individual component or system is followed by a list of
tests or inspections and corrective actions to take.
High voltage is present in this system. Do not make continuity checks with the power on. Death or serious
injury may result.
4-4
