Rohde & Schwarz 1164.4391.03, Service Manual

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R&S FSP Module Replacement
1164.4556.82 3.25 E-1
Installing the New Membrane and Completing the Instrument
Put the new mat (630) into the keyboard frame (620).
Note: The pins of the mat must be pressed in the wholes at the keyboard frame.
Locate the new keyboard membrane (640) on the back of the mat (630) .
Note: Push the foil cable of the membrane through the slit in the mounting panel.
The membrane must be positioned to let the pins of the mat come trough the holes in the
membrane.
Locate the mounting plate with the display (600) onto the membrane (640) .
Note: The mounting plate must be positioned to let the pins of the mat come trough the holes in
the mounting plate (800).
Press the front panel together, turn the keys to the top and screw ten countersunk screws (660) into
the keyboard frame.
Place the front panel with the keys on the top of the instrument, with the cables in the right direction
to the front module controller.
Carefully plug the cable connectors to the controller board without reversing the polarities and
replace the mounting plate in the reverse order.
Fig. 3-11 Position of connectors on front module controller
Rotate the front panel into the instrument and screw with four countersunk screws (610) in the front
frame at the top and at the bottom.
CAUTION
Make sure to route the cables properly.
Install the labelling panel (270).
Push the 2 front handles (420) on the instrument and mount them with the 4 screws (430).
Replace the volume control knob (Option R&S FSP-B3), if it was removed.
Connect the instrument to the mains, switch on the instrument power switch and switch on the
instrument with the ON/STANDBY key