Casio TE-3000S Service Manual page 15

Remove the FPC (E ), spacer (E ), and sheet.
BATTERY
1. Remove the connector (CN5).
2. Remove the lithium battery.
MAIN PCB ASS'Y
1. Remove the six screws, two connectors (CN13, CN4) and four FPCs
(CN2, CN3, CN9, CN1).
Remove the PCB ass'y (E468-1).
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