HP M5025 Service Manual - Page 185

Stapler/stacker component Overview This section describes the staple stacker functions, the relationships between mechanisms and circuits, and the timing of operations. An active-high signal is indicated by "H" or by a signal name without a slash in front of it, such as "PSNS." An active-low signal is indicated by "L" or by a signal name with a slash in front of, such as "/SCNON." A signal that is "H" or has a name without a slash is active at the supply voltage level (indicating that the signal is being output), and inactive at ground level (indicating that the signal is not being output). A signal that is "L" or has a slash in front of its name is active at ground level, and inactive at the supply voltage level. NOTE The staple stacker has a microcomputer which cannot be checked. This manual does not discuss the microcomputer's operation. Board circuit descriptions are limited to an outline using block diagrams. There are two types of circuit explanations. These include everything from the sensor to the input sections of the major circuit boards and everything from the output sections of the major circuit boards to the loads. These are explained with block diagrams according to the function. Figure 4-41 Stapler/stacker ENWW Stapler/stacker component 155