Data redazione: 25/07/03
R.V.R. Elettronica S.r.l. (BO)
VJ30000-TE - R.F. Tube Amplifier
45
4.4 TUBE REPLACEMENT
1)
Move the sliding panel to its upper limit (rods fully exposed), using the PLATE control.
2)
Disconnect the line supply from the unit.
3)
Ensure that the tube has cooled sufficiently to avoid severe burning.
4)
Ensure that all internal voltages are at 0V; use a shorting-stick, if necessary.
5)
Unscrew the fixing screws of the front, hinged access panel of the chamber (fig.9A).
6)
Unscrew the fixing screws of the chamber panel (fig.9A).
7)
Remove the air outlet flue with the protective net (fig.9B).
8)
Loosen the anode tube fixing collar (fig.9B).
9)
Raise the anode tube as far as possible and keep it in that position.
10)
To re-fit the tube, follow the procedure described in paragraph 3.6, Tube Installation.
4.5
AIR FILTER REPLACEMENT
1)
Disconnect the line supply from the unit.
2)
Open the rear grill (1 fig.1B) of the air filter, undoing the fixing screws.
3)
Change the felt air filter, carefully cleaning inside.
4)
Close the rear grill and tighten the fixing screws.
5)
Reconnect the line supply.
APPENDIX A
CIRCUIT DIAGRAMS, LAYOUTS AND BILLS OF MATERIAL
This section contains circuit diagrams, layouts and bills of material of the modules which
composing the equipment.
For more information about each module see as reference Section 2.
