R.V.R. Elettronica TEX20-NV, Техническое руководство

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TEX20-NV Technical and Maintenance Manual
R.V.R. Elettronica S.r.l. (Bo) Pag. 40
MAINTENANCE
4.1 SAFETY REQUIREMENTS
WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING
When the exciter is operational, removing the top cover will expose lethal
voltages on the line voltage selector and heavy currents on the power supply
filter terminals and power transistors.
Use insulated tools for any type of maintenance work and do not touch any
internal components when the exciter is switched on.
Ensure that the exciter is disconnected from the line supply before carrying
out any maintenance work.
MAINTENANCE LEVEL 1
4.2 ROUTINE MAINTENANCE
The only routine maintenance required by the TEX20-N.V. is the periodic
replacement of the cooling fan and the removal of accumulated dust.
The period between such action will depend on ambient operating conditions
such as temperature, air-borne dust levels and humidity.
It is advisable to check the unit every 6 months and to replace noisy or worn
fans. Fans should be replaced as a matter of course after no more than 18 months
of operation.
MAINTENANCE LEVEL 2
4.3 RF POWER AMPLIFIER MODULE REPLACEMENT
1) Open the top cover of the unit.
2) Disconnect connector CN1 on the CON-PA card, near the front panel.
3) Unscrew the three fixing screws situated on the lower part of the
bottom of the equipment.
4) Disconnect the screened cable connecting the RF Power Amplifier
module to the Main Card.
5) Slide out the RF Power Amplifier.
4.4 MAIN CARD REPLACEMENT
1) Open the top cover of the unit.
2) Disconnect connectors CN1 and CN2.
3) Disconnect the CN4 connector of the screened cable connecting the