Consilium SRT - Replacement of the Rf Front End Assy

SRT X-BAND RADAR SYSTEMS
CORRECTIVE MAINTENANCE
304202P003 6.5 Rev. C
5. By means of the proper screwdriver, unscrew the screws
(Chapter 9, Figure 9.1.27 pos. 1 and pos. 6) and remove
the Magnetron (pos. 2).
c) Installation
6. Before fastening the Magnetron to the proper seat,
spread a layer of silicone grease on Magnetron surface
which is in contact with the alloy in order to increase the
Magnetron heating surface dissipation.
7. In order to install the new Magnetron, perform the
removal operations in reverse order
8. IN ORDER TO PREVENT ANY ACCIDENTAL
ROTATION OF THE ANTENNA, DISCONNECT THE
MOTOR FROM THE BRUSHLESS CONTROLLER
BOARD AND UNPLUG THE 5 PIN CONNECTOR.
9. On the electric switchboard, set to ON the Main Line
Break relevant to the unit and remove the warning
placard.
10. Position the selector S1 of SRT_Control Board (Chapter
9, Figure 9.1.17 pos. 6) on position 2.
11. On the SRT_Power board, made a link P1 (Chapter 9,
Figure 9.1.10, pos. 5)
before switching on, wait for 30 minutes.
12. By following the procedures of display manual, perform
the VCO calibration.
13. Perform the following operations:
- on the SRT_Power remove the link P1 (Chapter 9,
Figure 9.1.10, pos. 5),
- on SRT_Control Board, position S1 (Chapter 9, Figure
9.1.17 pos. 6) on 0 (zero).
14. Unlock and close the equipment cover by following the
reverse procedure.
6.2.7 Replacement of the RF Front End Assy
a) Required Tools
− Set of screwdrivers,
− Set of open wrenches,
− Set of hexagonal wrenches,
b) Removal
1. By following the procedures of paragraph 6.2.3, open the
TXRX Cover
2. Disconnect the RF_Amplifier Assy (Chapter 9, Figure
9.1.28, pos. 1) cabling, taking note of its disposition.
3. By means of the proper screwdrivers, unscrew the 4
screws (pos. 2)