Bird Technologies 4304A - Manual (Page 29)

18
This manual does not list all malfunctions that may occur, or all corrective
actions. If a malfunction is not listed or not corrected by the listed actions, con-
tact the nearest Bird Service Center for assistance.
Figure 8 Maintenance Locations
Problem Possible Cause Corrective Action
No meter
reading No RF power Check RF source
“Arrow” on element pointing
wrong way Rotate element
Meter burned out or damaged Replace the meter. Refer
to page 20.
Intermittent or
inconsistent
meter reading Dirty dc contact Clean contact
Faulty transmission line or
antenna Inspect line
Sticky or defective meter Replace the meter. Refer
to page 20.
High VSWR or
reflected
power Foreign material in line section
or in RF connectors Clean connectors
Open or shorted transmission
line Inspect line
Bad load or poor connectors Inspect load, antenna,
and connectors
5
15
50
150
500
ZERO
ADJUST
SCREW
METER
SCREW
CONNECTOR
SCREWS
ELEMENT
STOP
HOLDING
SCREW
LINE
SECTION
SCREWS
BACK
COVER
SCREWS