02/20007-20 DocuPrint N2125Base Engine, 550 Sheet Paper FeederInitial IssueWiring DataSystem Controller PWB <=> Control Panel (Figure 16) (Table 13)Figure 16 System Controller PWB <=> Control Panel550 Sheet Paper FeederWiring Diagrams and Signal InformationThis section of the manual contains a Block Diagram for the N2125 550 Sheet Paper FeederAssembly. The Block Diagram shows the interconnections of the major subsystems within theprinter. The remainder of this section divides the Block Diagram into individual block diagramsto better illustrate the electrical relationships between components and assemblies within the550 Sheet Paper Feeder Assembly. Each wire in the block diagram is tagged with a signalname, and each wire is terminated at both ends with a pin number.Block Diagram1. 550 Sheet Feeder Block Diagram2. Size 1 PWB <=> Tray 2 PWB <=> Tray 3 PWB (Table 2)3. Feeder PWB <=> Low Paper Sensor, Stack Height Sensor, Feed Clutch Assembly, TurnClutch Assembly and Motor Assembly (Table 3)Location of P/J ConnectorsUse the P/J Table (Table 1) and the P/J Map (Figure 1) to locate a specific P/J connector withinthe Feeder and Cassette.To find the location of a P/J:1. Locate the P/J connector number in the first column of the table.2. Locate the corresponding coordinates in the second column, such as I7 or J7.3. Go to the map.4. Cross-reference the letter and number of the P/J coordinates with the letters and numberson the map.5. The P/J connector is located within the area where the coordinates cross.Table 13 Signal NamesPin Number Signal Name In/Out1 3.3V -2 GND -3 /ACK In4 GND -5 DAT_OUT Out6 DAT_IN In7 /STB Out8 /RESET Out
