10-2 Phaser 6128MFP Service Manual
Wiring
Plug/Jack Designations and Locator Diagrams
This chapter contains the plug/jack designators, locator diagrams, and wiring 
diagrams for the print engine, Scanner, and ADF.
The Plug/Jack Locator diagrams show the P/J locations within the printer. Use 
these illustrations to locate connections called out in the Troubleshooting 
procedures presented in Sections 3, 4, and 5.
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.
4. The Remarks column provides a brief description of each connection.
Print Engine Plug/Jack Designators
Print Engine Plug/Jack Designators
P/J Map Coordiates Description
10 1 J-157 Connects MCU Board and HARNESS ASSY ESS
11 1 J-157  Connects MCU Board and HARNESS ASSY ESS 
VIDEO
14  1 I-157 Connects MCU Board and HARNESS ASSY LVPS 
MAIN
15  1 I-157  Connects MCU Board and HARNESS ASSY LVPS 
MAIN
16  1 I-159 Connects MCU Board and HARNESS ASSY HVPS
17  1 I-157 Connects MCU Board and HARNESS ASSY FUSER
18 1 I-158 Connects MCU Board and HARNESS ASSY TNR 
MOT
19 1 I-158 Connects MCU Board and HARNESS ASSY TNR 
MOT
20 1 J-159 Connects MCU Board and HARNESS ASSY HUM
21 1 J-158  Connects MCU Board and HARNESS ASSY MAIN 
MOT
22 1 J-157  Connects MCU Board and HARNESS ASSY SUB 
MOT
23 1 J-158 Connects MCU Board and HARNESS ASSY L SIDE
24 1 J-158 Connects MCU Board and DRIVE ASSY PH (Color 
Mode Switching solenoid)
26 1 J-158 Connects MCU Board and HARNESS ASSY KSNR 
REGCL
28 1 J-159 Connects MCU Board and HARNESS ASSY L SIDE
29 1 I-159 Connects MCU Board and HARNESS ASSY SIDE SW
31 1 I-158 Connects MCU Board and HARNESS ASSY TONER 
CRUM