Ricoh D197 Service Manual page 282

Smart Card Reader Built-in Unit Type M12
16. Attach the main power switch cover with IC card reader [A].
17. Tighten the screw to secure the main power switch cover ( ×1).
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Lead the USB cable into the right side of the main frame as shown below.
D197/D198/D199/D200/D201/D202 2-212 SM