Rohde & Schwarz SMB100A - Replacing the Basis Board (A100); Removing the Basis Board

R&S SMB Module Replacement
1407.0806.82 3.47 E-6
Replacing the Basis Board (A100)
(See chapter 5, drawing 1406.6000.01).
Note: Different Basis Boards, order no. 1406.6600.02 or 1406.6700.02.
Removing the Basis Board
 Switch off the instrument and pull the mains plug.
 Dismounting the case (see page 3.39).
 Unfasten lock of fan cable
 Disconnect the fan cable from X116 and the power supply cable from X101 (Remove the plastic tie
before disconnect the cable).
 Disconnect the flex. cables W330, W310, W222 and the flex. switchboard cable.
 Unscrew one combination screw (0041.1653.00) and two screws (0041.1653.00) from the
IEC-connector at the back of the instrument.
 Undo the five combination screws (red marked) on the basis board.
 Remove the basis board (by turning it up towards the front and pulling it out and upward).
 Remove the SIM Card from the basis board (see page 3.50)