Xerox N2125N - DocuPrint B/W Laser Printer, Service Manual

Page: 319 / 335

02/2000
7-20 DocuPrint N2125
Base Engine, 550 Sheet Paper Feeder
Initial Issue Wiring Data
System Controller PWB <=> Control Panel ( Figure 16 ) ( Table 13 )
Figure 16 System Controller PWB <=> Control Panel
550 Sheet Paper Feeder
Wiring Diagrams and Signal Information
This section of the manual contains a Block Diagram for the N2125 550 Sheet Paper Feeder
Assembly. The Block Diagram shows the interconnections of the major subsystems within the
printer. The remainder of this section divides the Block Diagram into individual block diagrams
to better illustrate the electrical relationships between components and assemblies within the
550 Sheet Paper Feeder Assembly. Each wire in the block diagram is tagged with a signal
name, and each wire is terminated at both ends with a pin number.
Block Diagram
1. 550 Sheet Feeder Block Diagram
2. Size 1 PWB <=> Tray 2 PWB <=> Tray 3 PWB (Table 2)
3. Feeder PWB <=> Low Paper Sensor, Stack Height Sensor, Feed Clutch Assembly, Turn
Clutch Assembly and Motor Assembly (Table 3)
Location of P/J Connectors
Use the P/J Table ( Table 1 ) and the P/J Map ( Figure 1 ) to locate a specific P/J connector within
the 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 numbers
on the map.
5. The P/J connector is located within the area where the coordinates cross.
Table 13 Signal Names
Pin Number Signal Name In/Out
1 3.3V -
2 GND -
3 /ACK In
4 GND -
5 DAT_OUT Out
6 DAT_IN In
7 /STB Out
8 /RESET Out