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Casio EX-843

Casio EX-843
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V-R200 / VER.1
– 36 –
A. Replacing the Main PCB
Supplementary explanation
When the main PCB is replaced with a spare part one.
Since an OS is already installed on the spare part main PCB, update the OS to an appropriate
version as required.
Refer to: Diagnostic operation
2. UPDATING the OS
Write the serial number.
Refer to: Diagnostic operation
1-6. Checking and Registering the Serial Number
A-1. Removal of the DISPLAY-ASSY
(1) Undo two screws.
Screw (S1)
(2) Remove the DISPLAY-ASSY.

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