Ricoh D3D9 Field Service Manual page 38

2.Replacement and Adjustment
8.
Install the new FCU board [A] on the fax unit.
9. Switch the battery jumper switch [A] of the FCU board to the "ON" position before installing the fax unit on
the controller board.
•
If you don't switch the battery jumper switch position,the following situation will occur.
•
SC820 will occur.
•
The registered data will not be saved when you turn off the main power switch.
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