Casio EX-843 Service Manual page 44

Dallas key built in model
B-1. Remove the CHASSIS/HNG.
Reference Procedure: A-1 to A-4
B-2. Remove the CHASSIS/LCD.
(1) Peel off tape (3 pcs.).
(2) Unlock the connector lock and disconnect the FPC.
(3) Disconnect three connectors.
(4) Peel off the tape that is fi xing the lead wires from the Dallas key.
(5) Remove the Dallas key's ferrite core that is fi xed with double-sided tape.
(6) Undo fi ve screws.
(7) Remove the CHASSIS/LCD block.
(1) Tape ( 15
NOTE: Peel off the tape without giving a load to
the FPC.
(5) Ferrite core
30)
(3) Connector
(2) FPC
(1) Tape ( 15
50)
(4) Tape
(6) Screw (S4) 5
NOTE: There is a connector under the tape. Peel
off the tape without giving a load to the
connector.
Note on reassembling
When attaching the ground wire, make sure that the
wire does not protrude from the CHASSIS/LCD.
– 42 –
V-R200 / VER.1
(1) Tape ( 15
50)
(3) Connector
Ground wire
(7) CHASSIS/LCD block