Casio DT-X200 Service Manual page 58

(4) Removing the EXT-UNIT
1. Remove the CAP-UNIT PCB.
2. Remove the screws S1 (1 pce.) and S7 (4 pcs.).
Screws S7
Screw S1
3. Remove the SBAT-HOLDER while paying attention to the antennas (2 places).
Note: Gently lift the SBAT-HOLDER as the antennas are connected to it.
Antenna
Note on reassembling:
FPC
Note on reassembling:
Pass it into the SBAT-HOLDER.
OK
Antenna
Note on reassembling:
Put the excess part in the groove of the I-CASE.
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DT-X200/DT-X8
Antenna
NG