Ricoh D146 Service Manual page 261

Camera Direct Print Card Type M4/M3
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When installing more than one SD card, perform the merge operation.
3. Switch the power ON.
4. Attach the SD card slot cover. ( ×1)
5. Stick the "PictBridge" sticker on the front face of the MFP.
6. After switching the power ON, check that the system settings list is output, and that the option
is recognized correctly.
D146/D147/D148/D149/D150 2-190 SM