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4-6 Replacement of Control Circuit Board
4-6-1 Removal of Ass'y Control Box
1. Be sure to ground any static electric charge i
your body and never touch the touch control
circuitry.
2. Disconnect the connectors from the control
circuit board.
3. Remove screws securing the control box
assembly.
4. Remove the screw securing the ground tail of
the keyboard.
4-6-2 Remonal of Ass'y P.C.B
1. Pull the lever end of the plastic fastener and
remove the Flexible Printed Circuit(FPC) of
membrane panel.
2. Remove screws securing the control circuit
board.
3. Lift up the control circuit board from the Ass'y
control box.
4. When reconnecting the FPC connector, make
sure that the holes on the connector are properly
engaged with the hooks on the Plastic Fastener.
CONTROL BOX
ASSY PCB
SCREW
SCREWS
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