Valleylab Force FX-8C, Service Manual

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Front Panel
4-12 Force FX-8C Service Manual
Front Panel
The front panel consists of an injection molded plastic bezel with a
membrane keyboard, power switch, CEM mechanism switch, and REM
connector with switch. These front panel components interface with the
Display board and the Power Supply/RF board.
Membrane Keyboard
The membrane keyboard is attached to the bezel with a high strength
adhesive. It is not removable. The membrane contains 16 metal dome
push-button switches. Six of these switches control the up and down
sequencing of the power seven-segment LEDs (light-emitting diodes).
One switch controls the previous settings Recall function and nine
switches control each of the nine output modes of the generator.
The membrane also contains nine LEDs, one for each mode. A 25-pin flat
ribbon cable connects the membrane keyboard switches and LEDs to the
Display board.
Power Switch
A double pole single throw switch snaps into the front of the bezel. This
switch supplies the AC mains current to the generator.
REM Connector/Switch
An internal REM connector and sense switch connects to the inside of the
bezel with two screws. Two cables leave this assembly. One cable is the
actual REM connector; the other cable is the output of the internal switch
that senses the presence or absence of the center pin on the REM plug.
CEM Mechanism Switch
A small plastic lever arm mechanism is attached to the inner wall of the
front panel bezel on the Monopolar 1/CEM output jack. When you
connect a CUSA handpiece with a CEM nosecone to the Monopolar 1/
CEM Instrument receptacle, the arm actuates a small switch that connects
to the Display board with a 4-pin connector.