Ricoh D197 Service Manual page 375

Notes on the Main Power Switch
When you reconnect the AC power cord into an AC wall outlet, the machine will start
automatically.
In order to remove the residual charge, push the main power switch while you disconnect the
AC power cord. At that time, the power ON flag inside the machine is set. Therefore, after you
finish work on the machine and reconnect the power cord to the AC, even if you do not press
the main power switch, the machine will start automatically and the moving parts will begin to
move. When working on moving parts, be careful that fingers or clothes do not get
caught.

Automatic restart deals with cases when you accidentally unplugged the AC power
cord or unexpected power outages. By keeping the power flag ON, after the
resumption of power, the machine will start up automatically.
In rare cases, when you reconnect the AC power cord to a power outlet, the machine does
not start automatically. In this case, the machine has not failed. The cause is due to the timing
of releasing the residual charge. If you press the main power switch while the residual charge
was already released, the power ON flag will not be set. At this time, start the machine
manually by pressing the main power switch.
D197/D198/D199/D200/D201/D202 4-2 SM