Phaser 6121MFP Service Manual 10-3
Wiring
1 P/J18 E-140 Connects Engine Control Board to the Laser Unit
1 P/J19 C-139 Connects Engine Control Board to the Laser Unit
1 P/J21 B-136 Connects Engine Control Board to
1 P/J23 G-141 Not connected
1 P/J24 C-137 Connects Engine Control Board to P/J44 of the Paper
Full Sensor (PS16), and to CN14 which connects to the
Defogger Fan Motor
Image Processor Board
2 CN4 H-139 Connects the Image Processor Board to the Fax Board
2 P/J1 G-135 Connects the Image Processor Board to the ADF
Transport Motor
2 P/J2 F-135 Connects the Image Processor Board to P/J 4 of the
Scanner Motor
2 P/J4 G-135 Connects the Image Processor Board to P/J101 of
Relay Board 1
2 P/J6 H-136 Connects the Image Processor Board to the Scanner
2 P/J7 I-136 Connects the Image Processor Board to CN701 of the
Control Panel
2 P/J9 K-137 Connects the Image Processor Board to CN6 of the
Power Supply
2 P/J10 I-139 Connects the Image Processor Board to P/J1 of the
Engine Control Board
Fax Board
3 P/J1 J-137 Connects the Fax Board to CN8 which connects to the
Speaker
3 CN1 I-138 Connects the Fax Board to CN4 on the Image
Processor Board
3 CN2 B-136 TEL (telephone jack)
3 CN3 B-136 LINE (telephone line) jack
High Voltage Board
4 CN1 C-140 Connects the High Voltage Board to P/J17 of the
Engine Control Board
4 CN2 D-140 Connects the High Voltage Board to the Power Supply
Fan Motor
Power Supply
5 CN1 K-137 Connects the Power Supply to the Main Power Switch
(SW1)
5 CN3 I-138 Connects the Power Supply to CN4 of the Fuser
5 CN4 C-136 Connects the Power Supply to the Front Door Switch
(SW1)
5 CN5 C-136 Connects the Power Supply to P/J2 of the Engine
Control Board
5 CN6 C-136 Connects the Power Supply to P/9 of the Image
Processor Board
5 CN7 B-137 Connects the Power Supply to P/3 of the Engine
Control Board
Print Engine Plug/Jack Designators (continued)
Map P/J Coordinates Description
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