Casio PX-780 - Notes on Replacing Main PCB Assy

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10-9. Notes on replacing the MAIN PCB ASSY
MAIN PCB ASSY has been changed due to discontinuation of the parts used.
To distinguish the MAIN PCB ASSY, see the PCB name printed on the board.
When the MAIN PCB ASSY of version VA becomes out of stock, the MAIN PCB ASSY of version VA2 will
be supplied as spare parts.
In this case, replace the current MAIN PCB ASSY (version VA) with the supplied one (version VA2) and
perform the following changes.
- Change the rating label to meet the appropriate model of version VA2.
- Change the model setting in the test program to meet the appropriate model of version VA2. (Refer to P73)
Location of the model name Version Model Name
VA
IT-3100M53E
IT-3100M54E
IT-3100M55E
IT-3100M55U
IT-3100M56E
IT-3100M56U
VA2
IT-3100M53E2
IT-3100M54E2
IT-3100M55E2
IT-3100M56E2
PCB name Corresponding version
PX780-MAIN VA
PX780VA2-MAIN VA2