
No.
Sensor Name/
Sensor Board Name
Activ
e
CN
Condition
Symptom
TH1
Thermistor
• Pressure Roller
Center, Edge
A
CN212/21,1
9
Open/
Shorted
SC561, SC571
S3
Paper Exit Sensor
L
CN204/9
Open
Jam C (Jam 20)
Shorted
Jam C (Jam 1)
S2
Junction Paper Jam
Sensor
L
CN204/6
Open/
Shorted
Jam C (Jam 24/64)
-
NC Sensor Center,
Edge
A
CN212/14,9
Open/
Shorted
SC581, SC591
S5
Paper Overflow Sensor
L
CN204/15
Open
Paper overflow message is
not displayed when the
paper overflow condition
still remains.
Shorted
Paper overflow message is
displayed when the paper
overflow condition does
not remain.
S46
Original Length Sensor
1
A
CN313/8
SIO
Open/
Shorted
Original paper size cannot
be detected.
Original Length Sensor
2
A
CN313/5
SIO
Open/
Shorted
Original paper size cannot
be detected.
S47
Original Length Sensor
3
A
CN313/2
SIO
Open/
Shorted
Original paper size cannot
be detected.
S43
Scanner HP Sensor
H
CN318/2
SIO
Open
SC120
Shorted
SC121
S44
Platen Cover Sensor
L
CN318/5
SIO
Open/
Shorted
Platen cover open cannot
be detected.
Electrical Component Defects
911
Summary of Contents for AP-C3
Page 1: ...Model AP C3 Machine Code D143 D144 Field Service Manual January 2012 Subject to change...
Page 2: ......
Page 24: ...22...
Page 26: ...Product Overview Component Layout 1 Product Information 24...
Page 36: ...1 Product Information 34...
Page 130: ...11 Reassemble the machine 2 Installation 128...
Page 158: ...2 Installation 156...
Page 249: ...21 Pulley A timing belt 22 Gear unit A x 8 Drive Unit 247...
Page 259: ...5 Disconnect the connector A x 1 x 1 6 Duplex by pass motor bracket A x 2 Drive Unit 257...
Page 268: ...6 Development clutch K A x 1 4 Replacement and Adjustment 266...
Page 323: ...5 Remove the controller box stay A x 4 6 IOB bracket A x 4 x All Electrical Components 321...
Page 336: ...2 Controller board A x 7 x 3 4 Replacement and Adjustment 334...
Page 366: ...3 Remove the bracket A x 1 x 1 4 Release the harness A x 1 4 Replacement and Adjustment 364...
Page 880: ...6 Troubleshooting 878...
Page 890: ...Flow Chart for the Toner End Recovery Error 6 Troubleshooting 888...
Page 908: ...Sensor Locations 6 Troubleshooting 906...
Page 922: ...6 Duplex with combine mode SP 8421 005 pages 7 Energy Saving 920...
Page 923: ...Model AP C3 Machine Code D143 D144 Appendices January 2012 Revised...
Page 924: ......
Page 928: ...4...
Page 960: ...1 Appendices 36...
Page 1330: ...1106 1 Toner Limit Value CTL 100 to 400 260 1 step 3 SP Mode Tables 406...