User Guide

Stacker
The dc controller PCA controls the stacker and sends signals to the stacker-driver PCA. The stacker-
driver PCA then controls the operation of the stacker components such as the stacker motor,
solenoid, and sensors. When the printer power is turned on, dc power from the printer low-voltage
supply circuit is supplied to the stacker. The stacker performs the power-on sequence and enters the
standby mode. When it receives a signal from the dc controller PCA, the stacker-driver PCA
activates the motors and solenoids as needed to perform the stack operation.
Stacker feed and delivery
The stacker feed-and-delivery system consists of several feed rollers and guides that the stacker
motor and solenoids drive. Sensors along the stacker paper path detect the arrival and passing of
media and confirm the position of the jogger guide. The jogger guide helps to align the pages before
placing them in the delivery bin.
Table 5-5 Stacker components
Component Purpose
Motor Feed motor (M103) Rotates the feed and delivery roller
Solenoid Deflector solenoid (SL1101) Operates the delivery deflector
Sensor Paper-inlet sensor (PS1101) Detects jams
Paper-delivery sensor (PS1102) Detects jams
Delivery paper-full sensor (PS1106) Detects that the delivery bin is full
Switch Door-open switch (SW1101) Detects an open door
After the leading edge of the media reaches the fuser delivery sensor (PS108) in the printer, the dc
controller PCA sends a signal to the stacker-driver PCA. The stacker-driver PCA activates the
deflector solenoid (SL101) for a specific amount of time to move the delivery deflector into place to
route the media to the stacker rather than to the top output bin. The stacker-driver PCA also
activates the stacker motor (which rotates at the same speed as the printer main motor) to rotate the
feed and delivery rollers.
The feed roller moves the media into the stacker. If the dc controller PCA sends a following-page
signal (which indicates that the job contains another page), the stacker-driver PCA activates the
deflector solenoid (SL101) again. The delivery roller moves the media into the delivery bin.
Stacker and stapler/stacker 139