Park Air Systems Limited B63300HS User Manual
T6T 300 Watt VHF Transmitter
Page 104
Maintenance
Unscheduled Maintenance
The instructions given in this topic involve connecting dangerous voltage to the transmitter.
Maintenance should be carried out only by suitably qualified personnel.
Maintenance should be carried out only by suitably qualified personnel.
When an ac supply is connected, dangerous voltage is present within the transmitter. Care
must be taken by personnel to avoid accidental contact with exposed circuitry during
maintenance or alignment procedures.
must be taken by personnel to avoid accidental contact with exposed circuitry during
maintenance or alignment procedures.
When the Supply switch is set to the Standby position, dangerous voltage is still present in
the transmitter's internal power supply circuitry. To ensure safe working, both ac and both
dc input supplies must be disconnected from the transmitter.
the transmitter's internal power supply circuitry. To ensure safe working, both ac and both
dc input supplies must be disconnected from the transmitter.
The output transistors used in the power amplifier (PA) contain the toxic material beryllium.
Although no procedures in this documentation instruct component removal, users should be
aware that there could be a hazard should the output transistors become damaged.
Although no procedures in this documentation instruct component removal, users should be
aware that there could be a hazard should the output transistors become damaged.
The T6T transmitter circuitry contains Electrostatic Sensitive Devices (ESDs). Personnel
must be aware of the precautions necessary to prevent damage to such devices.
must be aware of the precautions necessary to prevent damage to such devices.
Changes or modifications made to this equipment that are not expressly approved by
Park Air, or parties authorized by Park Air, could void the user’s authority to operate the
equipment.
Park Air, or parties authorized by Park Air, could void the user’s authority to operate the
equipment.
When carrying out repairs to the PA module, care must be taken not to damage the gasket.
If the strips become damaged, they must be replaced. Failure to comply with this instruction
may compromise the transmitter’s Electromagnetic Compatibility (EMC) and breach
European Commission regulations.
If the strips become damaged, they must be replaced. Failure to comply with this instruction
may compromise the transmitter’s Electromagnetic Compatibility (EMC) and breach
European Commission regulations.
When screws are inserted into the PA casting care must be taken not to exceed a torque of
6 Ibs/inch when tightening. This applies when replacing the top and bottom covers and
during the refitting of the PA modules.
6 Ibs/inch when tightening. This applies when replacing the top and bottom covers and
during the refitting of the PA modules.
WARNING Dangerous Voltage
WARNING
Beryllium Hazard
Caution
ESDs
Caution Unauthorized Modifications
Caution Repairs