106 Theory of operation Q2431-90912
Stapler/stacker
The DC controller PCA controls the stapler stacker by sending signals to the stapler/stacker
driver PCA. The stapler/stacker PCA controls the stapler/stacker motor, solenoids, sensors, and
the stapler unit. When the printer power is turned on dc power from the printer’s low-voltage
supply circuit is supplied to the stapler/stacker. The stapler/stacker performs the power on
sequence (see figure 32 on page 102) and enters the standby mode. When the DC controller
PCA sends a signal, the stapler/stacker driver PCA activates the motors and solenoids as
needed to perform the staple and stack operation.
Figure 35. Stapler/stacker driver PCA block diagram