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TM 11-5820-890-30-5
CHAPTER 7
MOUNTING BASE, ELECTRICAL EQUIPMENT MT-6352/VRC
MAINTENANCE INSTRUCTIONS
Subject
Section
Page
Principles of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . I
7-1
Repair Parts, Special Tools, TMDE, and Support Equipment . . . . . . . . . . . . . . . . . . . . . . . II
7-1
Troubleshooting Procedures. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Ill
7-3
Maintenance Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . IV
7-5
Preparation for Storage or Shipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V
7-22
Section I. PRINCIPLES OF OPERATION
7-1.
INTRODUCTION.
The mounting base performs the following functions:
Physically supports the mounting adapter.
Electrically connects mounting adapter to vehicular power and intercom.
Distribution of vehicular dc power.
7-2.
ELECTRICAL CONNECTOR ASSEMBLY (13A1).
The electrical connector assembly has five connectors as shown in figure 7-1. The operating voltage (22 to 32V
dc) from the vehicle’s electrical system is connected to the power-in connector (J1). A second mounting base
or other equipment is connected to the power-out connector (J2). The vehicle intercom or LS-671/VRC loud-
speaker is connected to connector J3 or J4. The system connector (J5) mates with the system connector (PI)
on the amplifier adapter. See chapter 4.
The electrical connector assembly has no active circuitry. The dc input power is filtered by either filters FL1 and
FL2, or for newer versions the FILTER EMI-CCA. All connections are as shown in figure 7-1.
Section II. REPAIR PARTS, SPECIAL TOOLS, TMDE,
AND SUPPORT EQUIPMENT
7-3.
COMMON TOOLS AND EQUIPMENT.
For authorized common tools and equipment, refer to the Modified Table of Organization and Equipment (MTOE)
applicable to your unit.
7-4.
SPECIAL TOOLS, TMDE, AND SUPPORT EQUIPMENT.
For the TMDE and support equipment required for DS, see the maintenance allocation chart. It is Appendix B in
TM 11-5820-890-20-2.
7-5.
REPAIR PARTS.
Repair parts are listed and illustrated in the repair parts and special tools list (TM 11-5820-890-30P-3) covering
direct support maintenance for this equipment.
7-1
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