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Module Replacement
R&S FSP
1164.4556.82 3.24
E-1
Replacing the Keyboard Membrane or Mat on the Front Module
(See chapter 5,
spare parts list, items 630 and 640, and explosion drawings 1164.4391, 1164.4404.)
The keyboard membrane is the contact film for the rubber keys (mat) behind the labelling panel and the
keyboard frame. For replacement proceed as follows:
Opening the Instrument and Removing the Front Panel
Switch off the instrument and pull the mains plug.
Unscrew the four screws (430) of the front handles on both sides and take off the front handles.
Remove the volume control knob (Option R&S FSP-B3), if present, by pulling it off.
Pull off the labelling panel (270) towards the front.
Unscrew each two countersunk screws (610) in the front frame at the top and at the bottom.
Remove the front panel with keyboard and display (600, 620, 630, 640, 650, 660) to the front and
rotate it to the top of the instrument.
CAUTION
Note the connecting cables are still connected to the controller .
Pull off the connecting cables to the adapter board (LCD, DC/AC illumination converter), keyboard
membrane and spinwheel.
Note:
When pulling off the connecting cables be careful with the cable connecting to the
keyboard. It is a film cable which can only be disconnected after sliding up the lock of the
film cable plug.
Removing the Membrane
Place the mounting plate onto the surface with the keyboard frame pointing upwards.
Pull off the knob (650) of the spinwheel.
Unscrew the 10 countersunk screws (660) and remove the keyboard frame (620).
The keyboard membrane (640) as well as the mat (630) is now accessible.
Содержание 1164.4391.03
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