HP CP6015dn Service Manual - Page 650

Electrical circuitry for the booklet maker unit The saddle-stitcher controller PCA has a microprocessor that controls the sequence of operations and that handles serial communications with the stacker controller PCA. This includes driving solenoids and motors in response to the commands from the stacker controller PCA. The saddle-stitcher controller PCA is also used to communicate the state of various sensors and switches to the stacker controller PCA in serial. The functions of the major ICs mounted on the saddle stitcher controller PCA are as follows: ● IC7 (CPU): Controls the sequence of operations. Contains the sequence program ● IC8 (communications IC): Communicates with the finisher unit ● IC512 (regulator IC): Generates 5 V ● IC10 (regulator IC): Communicates with the product Figure 8-43 Electrical circuitry for the booklet maker unit Sensor Saddle stitcher controller PCA Motor IC7 CPU Solenoid Switch IC512 Regulator IC IC10 Regulator IC IC8 Communications IC Stacker controller PCA Product (Host machine) Feed drive system The stacker unit stacks paper delivered from the product, offsets stack jobs, or staples and delivers paper to the outputs according to commands from the product. The booklet maker unit carries, aligns, and stitches paper delivered from the product, and then feeds the resulting stack. After these operations, the booklet maker unit folds the stacks of paper and delivers them to the booklet-maker-unit output bin. The delivery methods are shown in the following figure. Figure 8-44 Feed drive for the stacker unit Method of delivery Normal delivery Simple stacking Stack job offset Saddle stitch delivery Staple Front 1-point stapling Rear 1-point stapling 2-point stapling 608 Chapter 8 Output accessories and intermediate paper-transfer unit (IPTU) ENWW