Ricoh D197 Service Manual page 279

8. Pass a USB cable through the opening on the upper cover.
9. Put an IC card reader [A] on the upper cover, and connect the USB cable.

An IC card reader is not provided with this option.

Pull the cable down through the opening on the upper cover to adjust the excess
length of the cable. This prevents the cable from getting sandwiched when you
attach the IC card cover.
10. Attach the IC card cover [A] provided, to cover the IC card reader (Tab × 4).

Do not sandwich the USB cable with this cover.

Make sure that the reading area on the IC card reader is in contact with the IC card
cover. If they are not contacted with each other, put the sponge(s) provided
underneath the IC card reader to fill the gap. Otherwise, the IC card reader will not
work properly.
SM
Smart Card Reader Built-in Unit Type M12
2-209 D197/D198/D199/D200/D201/D202