Standard Communications mt930b, Руководство по обслуживанию, Страница: 33 / 155

MT930B Service Manual Page 6-1
CHAPTER 6
MAINTENANCE
INTRODUCTION
This chapter provides step-by-step procedures for making measurements and
adjusting and tuning the MT930B Satellite Receiver. If all steps are followed
faithfully, any problems there may be should be solved, and the receiver can be
properly aligned. Component sites and adjustment points are in illustrations at
the end of this chapter.
PRECAUTIONS
Each of the following must be observed during servicing of the receiver under
test (UUT) and/or its options:
1. When making parts changes, always disconnect power to the receiver and
ground the body, test equipment, and tools.
2. When replacing or installing wires inside the chassis, make sure there is
adequate clearance between the wires and any heat-generating compo-
nents.
3. When replacing a component that is not soldered to a PC board or plugged
into a connector (e.g., the block downconverter, etc.), observe the following
procedure:
a.
Strip ¼ inch of insulation from any wire(s) to be connected.
b. Wrap a wire's center conductor at least one full turn around the center
post of any component or solder terminal to which the wire is being
attached.
c. Properly heat the connection and apply solder appropriately. Insulate
as necessary.