39
Chapter 6
Maintenance
The Bird 4421 Power Meter requires only simple, routine maintenance.
y
Wipe off dust and dirt regularly.
y
Check the connectors and cables for damage.
y
Clean the connector contacts with alcohol or dry cleaning solvent.
Troubleshooting
Since the power meter and power sensor can only work together, the
first step is to determine which is malfunctioning. Connect the power
sensor to the meter and perform the functional test on page 41. If the
power meter is malfunctioning, refer to the troubleshooting table
below. If the power sensor is malfunctioning, return it for service.
This manual cannot list all malfunctions that may occur, or corrective
actions. If a malfunction is not listed or is not corrected by the listed
corrective actions, contact a qualified service center.
WARNING
Disconnect the unit from all power sources before servicing.
The unit may be energized from multiple sources.
The potential for electric shock exists.
WARNING
Never attempt to connect or disconnect RF equipment from the
transmission line while RF power is being applied.
Leaking RF energy is a potential health hazard.
WARNING
The Bird 4421 contains no user-serviceable parts.
Do not remove its cover.
CAUTION
Due to the complexity of the Bird Power Sensor, field repairs
beyond general maintenance should not be attempted.
Removal or disturbance of the power sensor cover can result in
cancellation of lifetime warranty.
Содержание THRULINE 4021
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