J No. Symbol Name Relay connector J No. Symbol Name Re-
marks
J151 UN1 DC Controller PCB J361 UN9 Low Voltage Sub PCB
J151 UN1 DC Controller PCB J362 UN9 Low Voltage Sub PCB
J153 UN1 DC Controller PCB J3015 PCB28 Environment Sensor
J161 UN5 Relay PCB J601 PCB29 Patch Sensor
J161 UN5 Relay PCB J611 PCB30 Patch Registration Sensor
J163 UN5 Relay PCB J3011 SR4 Registration Detection Sen-
sor
J164 UN5 Relay PCB J3002 SR1 Paper Feeder Pre-Registra-
tion Detection Sensor
J165 UN5 Relay PCB J3003 SR12 Pre-registration Detection
Sensor
J165 UN5 Relay PCB J3004 SR13 Cassette Paper Detection
Sensor
J166 UN5 Relay PCB J3001 SR6 Developing Homeposition
Sensor
J166 UN5 Relay PCB J3005 SR2 Front Cover Sensor
J901 UN13 Main Controller PCB J409 UN12 CIS Unit
J914 UN13 Main Controller PCB J351 UN9 Low Voltage Sub PCB
4. Disassembly/Assembly
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