HP 4300 Service Manual - Page 124
Stacker feed and delivery, Stacker feed delivery diagram, Table 34. Stacker components, Component
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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 34. Stacker components Component Motor Solenoid Sensor Switch Purpose Feed motor (M103) Rotates the feed and delivery roller Deflector solenoid (SL1101) Operates the delivery deflector Paper inlet sensor (PS1101) Used for jam detection Paper delivery sensor (PS1102) Used for jam detection Delivery paper full sensor (PS1106) Detects that the delivery bin is full Door open switch (SW1101) Detects an open door After the leading edge of the media reaches the fixing 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 in the printer which routes the media to the stacker rather than to the printer's top output bin. The stacker driver PCA also activates the stacker motor (at the same speed as the printer's 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 means there is another page in the job), the stacker driver PCA activates the deflector solenoid (SL101) again. The delivery roller moves the media into the delivery bin. Delivery Feed roller Delivery bin Deflector Figure 34. Stacker feed delivery diagram 104 Theory of operation Q2431-90912