HP CP6015dn Service Manual - Page 648

HP Booklet Maker/Finisher accessory Basic operation The following section describes the basic operation of the HP Booklet Maker/ Finisher accessory. Basic operation of the stacker unit The stacker unit processes jobs from the product in several ways. These include simple stacking, job offset, and stapling. The stacker controller PCA controls all operations involved in these modes, according to the commands from the product. Jobs from the product can also be routed for booklet making. Figure 8-40 Stacker unit basics Output bin drive system Output bin drive system Control system Swing guide drive system Alignment drive system Stapler drive system Delivery drive system Feeder drive system Shutter drive system Booklet making control system (saddle stitcher controller PCB) Electrical circuitry of the stacker unit A 16-bit microprocessor (CPU) is installed on the stacker controller PCA to control the stacker operation sequence and CAN communication with the video controller PCA. The stacker controller PCA drives solenoids, motors, and so forth in response to the commands received from the video controller through the CAN communication line. In addition, the stacker controller PCA reports information about various sensors and switches to the video controller through the CAN communication line. Major functions of the IC chips installed on the stacker controller PCA are as follows: ● IC13 (CPU): Controls the operation sequence ● IC10 (EEP-ROM): Backs up adjustment values ● IC6 (Communication IC): Communicates with the host machine ● IC12 (communication IC): Communicates with the saddle stitcher unit 606 Chapter 8 Output accessories and intermediate paper-transfer unit (IPTU) ENWW