10-2 Phaser 7500 Printer Service Manual
Plug/Jack and Wiring Diagrams
Plug/Jack Diagrams and Designators
This chapter contains the Plug/Jack Designators, Locators, and wiring diagrams for 
the print engine and all options. 
The Plug/Jack Locator diagrams show the P/J locations within the printer, Optional 
550-Sheet Feeder, Duplex Unit, Fax, Copier, and Scanner. Use these illustrations to 
locate P/J connectors called out in the Troubleshooting procedures presented in 
Sections 3, 4, and 5.
The Plug/Jack locators consist of the P/J Designator Tables and the P/J Locator 
Diagrams.
• The P/J column lists the Plug/Jack numbers in numerical order.
• The Map column provides the map number of the specific areas (i.e., Electrical, 
Laser Unit...etc.)
• The Coordinates column lists the diagram coordinates for the location of the 
connector.
• The Remarks column provides a brief description of each connection.
1. Locate the P/J connector designator in the first column of the table.
2. With this information, go to the map listed in the second column.
3. Use the coordinates to locate the connection indicated on the map with its P/
J designation number.
Print Engine Plug/Jack Designators
Print Engine Plug/Jack Designators 
P/J Map Coordinates Remarks
1 9 B-182 Connection between the Main LVPS (PL18.1.11) 
and the Wire Harness (AC Main) (PL18.1.20)
2 5 B-144 Connection between the GFI (PL18.1.15) and the 
Wire Harness (FG) (PL18.1.18)
4 9 B-182 Connection between the Main LVPS (PL18.1.11) 
and the Main Power Switch Chassis Assy 
(PL18.1.1)
10 5 B-142 Connection between the GFI (PL18.1.15) and the 
Wire Harness (AC Main) (PL18.1.20)
11 5 C-142 Connection between the GFI (PL18.1.15) and the 
Wire Harness (AC Main) (PL18.1.20)
31 9 B-181 Connection between the Main LVPS (PL18.1.11) 
and the Wire Harness (Drawer) (PL18.4.1)
56 1 I-113 Internal connection of the Main Power Switch 
Chassis Assy (PL18.1.1)
57 1 J-113 Internal connection of the Main Power Switch 
Chassis Assy (PL18.1.1)
58 1 J-113 Internal connection of the Main Power Switch 
Chassis Assy (PL18.1.1)