Enraf Nonius Radarmed 650, Service Manual

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Enraf-Nonius B.V. Radarmed 650 Service Manual 1409773
Maintenance January 2000
4-5
Installation: Installation of the magnetron / filter assy. is in reverse order of the removal
procedure. For wiring details see Appendix B, fig. 10.
Note: The magnetron / H.F. combination can only be replaced as an assembly.
The magnetron / H.F. assembly parameters are factory determined. These
parameters are required for correct H.F. output power adjustment.
See par. 4.6.1 and 4.6.2 for adjustment of the magnetron / filter assy.
4.5.11 Mains transformer (TR1)
Removal: See par. 4.5.2 for removal of the front cover. Remove the primary wiring
from the mains distribution strip (CNA). Remove the magnetron heater wire
supply from the magnetron. Remove the secondary wiring from the main PC
Board. Remove the four mounting screws.
Installation: Installation of the mains transformer is in reverse order of the removal
procedure. For wiring details see Appendix B, fig. 10.
4.5.12 High-Voltage transformer (TR2)
Removal: See par. 4.5.2 for removal of the front cover. Remove the high-voltage
wiring from the distributor PC Board. Remove the primary wiring from
connector ST171(main PC Board)and from resistor R2. Remove the four
mounting screws.
Caution: Be careful when removing the high-voltage transformer. When an emitter is
connected to the Radarmed 650 the unit could be tilted backwards.
Installation: Installation of the high-voltage transformer is in reverse order of the removal
procedure. For wiring details see Appendix B, fig. 10.
4.5.13 Cooling fan
Removal: See par. 4.5.2 for removal of the front cover. See par. 4.5.11 for removal of
the mains transformer. See par. 4.5.12 for removal of the high-voltage
transformer. Remove the wiring from the motor. Remove the four mounting
screws.
Installation: Installation of the cooling fan is in reverse order of the removal procedure.
For wiring details see Appendix B, fig. 10.
4.6 ADJUSTMENT PROCEDURES
The adjustment procedure for the Radarmed 650 is carried out under the following test
conditions:
- The mains voltage must correspond with the technical specifications of the Radarmed
650
- The ambient temperature must be 25° C ± 5° C
To perform the adjustment procedures of the Radarmed 650 open the housing as described